GUARANTORS OF SECURITIES (Condensed Balance Sheet) (Details) - USD ($) $ in Thousands |
Mar. 31, 2018 |
Dec. 31, 2017 |
Mar. 31, 2017 |
Dec. 31, 2016 |
Current assets: |
|
|
|
|
Cash and cash equivalents |
$ 16,553
|
$ 13,583
|
$ 26,339
|
$ 26,950
|
Receivables: |
|
|
|
|
Trade, operating, net of allowance for doubtful accounts of $1,058 |
34,447
|
33,840
|
|
|
Trade, dry-leasing |
4,253
|
5,124
|
|
|
Tax receivables |
3,466
|
2,829
|
|
|
Other |
4,168
|
1,623
|
|
|
Inventories, net |
20,830
|
21,112
|
|
|
Deferred income taxes |
0
|
|
|
|
Prepaid expenses |
2,804
|
1,203
|
|
|
Escrow deposits |
|
3,250
|
|
|
Total current assets |
86,521
|
82,564
|
|
|
Property and equipment |
949,064
|
972,942
|
|
|
Accumulated depreciation |
(297,341)
|
(299,028)
|
|
|
Property and equipment, net |
651,723
|
673,914
|
|
|
Equity investments and advances |
30,445
|
30,056
|
|
|
Investments in consolidated subsidiaries |
0
|
0
|
|
|
Intangible assets |
1,118
|
1,122
|
|
|
Deferred taxes |
|
0
|
|
|
Intercompany receivables |
0
|
0
|
|
|
Other assets |
4,798
|
4,441
|
|
|
Total assets |
774,605
|
792,097
|
|
|
Current liabilities: |
|
|
|
|
Accounts payable and accrued expenses |
11,084
|
16,421
|
|
|
Accrued wages and benefits |
6,530
|
8,264
|
|
|
Accrued interest |
3,485
|
606
|
|
|
Accrued income taxes |
46
|
28
|
|
|
Accrued other taxes |
1,856
|
1,810
|
|
|
Accrued contingencies |
892
|
859
|
|
|
Current portion of long-term debt |
2,296
|
2,736
|
|
|
Other current liabilities |
3,166
|
1,720
|
|
|
Total current liabilities |
29,355
|
32,444
|
|
|
Long-term debt (including $467 and $1,903 from VIEs in 2018 and 2017, respectively) |
188,470
|
202,174
|
|
|
Deferred income taxes |
105,865
|
106,598
|
|
|
Intercompany payables |
0
|
0
|
|
|
Other liabilities |
1,596
|
1,434
|
|
|
Total liabilities |
325,286
|
342,650
|
|
|
Redeemable noncontrolling interest |
3,603
|
3,766
|
|
|
Equity: |
|
|
|
|
Common stock, $0.01 par value, 60,000,000 shares authorized; 21,688,959 and 21,319,150 outstanding in 2018 and 2017, respectively, exclusive of treasury shares |
219
|
215
|
|
|
Additional paid-in capital |
445,174
|
443,944
|
|
|
Retained earnings |
3,169
|
4,363
|
|
|
Treasury shares, at cost, 215,141 and 215,141 shares in 2018 and 2017, respectively |
(2,951)
|
(2,951)
|
|
|
Accumulated other comprehensive income, net of tax |
105
|
110
|
|
|
Total equity |
445,716
|
445,681
|
|
|
Total liabilities, redeemable noncontrolling interest and stockholders’ equity |
774,605
|
792,097
|
|
|
Parent |
|
|
|
|
Receivables: |
|
|
|
|
Deferred income taxes |
21,136
|
|
|
|
Guarantors |
|
|
|
|
Receivables: |
|
|
|
|
Deferred income taxes |
0
|
|
|
|
Non-guarantors |
|
|
|
|
Receivables: |
|
|
|
|
Deferred income taxes |
0
|
|
|
|
Reportable Legal Entities | Parent |
|
|
|
|
Current assets: |
|
|
|
|
Cash and cash equivalents |
14,195
|
|
|
|
Receivables: |
|
|
|
|
Trade, operating, net of allowance for doubtful accounts of $1,058 |
0
|
0
|
|
|
Trade, dry-leasing |
0
|
0
|
|
|
Tax receivables |
1
|
0
|
|
|
Other |
0
|
0
|
|
|
Inventories, net |
0
|
0
|
|
|
Prepaid expenses |
677
|
349
|
|
|
Escrow deposits |
|
0
|
|
|
Total current assets |
36,009
|
11,149
|
|
|
Property and equipment |
0
|
0
|
|
|
Accumulated depreciation |
0
|
0
|
|
|
Property and equipment, net |
0
|
0
|
|
|
Equity investments and advances |
0
|
0
|
|
|
Investments in consolidated subsidiaries |
167,177
|
161,350
|
|
|
Intangible assets |
0
|
0
|
|
|
Deferred taxes |
|
19,600
|
|
|
Intercompany receivables |
408,068
|
426,806
|
|
|
Other assets |
1,688
|
1,011
|
|
|
Total assets |
612,942
|
619,916
|
|
|
Current liabilities: |
|
|
|
|
Accounts payable and accrued expenses |
871
|
638
|
|
|
Accrued wages and benefits |
0
|
0
|
|
|
Accrued interest |
3,485
|
549
|
|
|
Accrued income taxes |
0
|
0
|
|
|
Accrued other taxes |
0
|
18
|
|
|
Accrued contingencies |
0
|
0
|
|
|
Current portion of long-term debt |
0
|
0
|
|
|
Other current liabilities |
2,536
|
848
|
|
|
Total current liabilities |
6,892
|
2,053
|
|
|
Long-term debt (including $467 and $1,903 from VIEs in 2018 and 2017, respectively) |
160,439
|
172,292
|
|
|
Deferred income taxes |
0
|
0
|
|
|
Intercompany payables |
0
|
0
|
|
|
Other liabilities |
0
|
0
|
|
|
Total liabilities |
167,331
|
174,345
|
|
|
Redeemable noncontrolling interest |
0
|
0
|
|
|
Equity: |
|
|
|
|
Common stock, $0.01 par value, 60,000,000 shares authorized; 21,688,959 and 21,319,150 outstanding in 2018 and 2017, respectively, exclusive of treasury shares |
219
|
215
|
|
|
Additional paid-in capital |
445,174
|
443,944
|
|
|
Retained earnings |
3,169
|
4,363
|
|
|
Treasury shares, at cost, 215,141 and 215,141 shares in 2018 and 2017, respectively |
(2,951)
|
(2,951)
|
|
|
Accumulated other comprehensive income, net of tax |
0
|
0
|
|
|
Total equity |
445,611
|
445,571
|
|
|
Total liabilities, redeemable noncontrolling interest and stockholders’ equity |
612,942
|
619,916
|
|
|
Reportable Legal Entities | Guarantors |
|
|
|
|
Current assets: |
|
|
|
|
Cash and cash equivalents |
0
|
0
|
|
|
Receivables: |
|
|
|
|
Trade, operating, net of allowance for doubtful accounts of $1,058 |
28,008
|
27,968
|
|
|
Trade, dry-leasing |
4,253
|
5,124
|
|
|
Tax receivables |
0
|
0
|
|
|
Other |
2,997
|
1,126
|
|
|
Inventories, net |
20,437
|
20,746
|
|
|
Prepaid expenses |
1,929
|
721
|
|
|
Escrow deposits |
|
3,250
|
|
|
Total current assets |
57,624
|
58,935
|
|
|
Property and equipment |
932,951
|
956,918
|
|
|
Accumulated depreciation |
(294,628)
|
(296,573)
|
|
|
Property and equipment, net |
638,323
|
660,345
|
|
|
Equity investments and advances |
30,445
|
30,056
|
|
|
Investments in consolidated subsidiaries |
0
|
0
|
|
|
Intangible assets |
0
|
0
|
|
|
Deferred taxes |
|
0
|
|
|
Intercompany receivables |
0
|
0
|
|
|
Other assets |
3,040
|
3,370
|
|
|
Total assets |
729,432
|
752,706
|
|
|
Current liabilities: |
|
|
|
|
Accounts payable and accrued expenses |
7,778
|
13,655
|
|
|
Accrued wages and benefits |
4,859
|
6,804
|
|
|
Accrued interest |
0
|
57
|
|
|
Accrued income taxes |
24
|
24
|
|
|
Accrued other taxes |
1,375
|
1,192
|
|
|
Accrued contingencies |
0
|
0
|
|
|
Current portion of long-term debt |
1,524
|
1,663
|
|
|
Other current liabilities |
600
|
835
|
|
|
Total current liabilities |
16,160
|
24,230
|
|
|
Long-term debt (including $467 and $1,903 from VIEs in 2018 and 2017, respectively) |
27,564
|
27,979
|
|
|
Deferred income taxes |
125,751
|
124,948
|
|
|
Intercompany payables |
358,320
|
381,660
|
|
|
Other liabilities |
1,590
|
1,435
|
|
|
Total liabilities |
529,385
|
560,252
|
|
|
Redeemable noncontrolling interest |
4
|
4
|
|
|
Equity: |
|
|
|
|
Common stock, $0.01 par value, 60,000,000 shares authorized; 21,688,959 and 21,319,150 outstanding in 2018 and 2017, respectively, exclusive of treasury shares |
0
|
0
|
|
|
Additional paid-in capital |
100,306
|
100,306
|
|
|
Retained earnings |
99,632
|
92,034
|
|
|
Treasury shares, at cost, 215,141 and 215,141 shares in 2018 and 2017, respectively |
0
|
0
|
|
|
Accumulated other comprehensive income, net of tax |
105
|
110
|
|
|
Total equity |
200,043
|
192,450
|
|
|
Total liabilities, redeemable noncontrolling interest and stockholders’ equity |
729,432
|
752,706
|
|
|
Reportable Legal Entities | Non-guarantors |
|
|
|
|
Current assets: |
|
|
|
|
Cash and cash equivalents |
2,358
|
|
|
|
Receivables: |
|
|
|
|
Trade, operating, net of allowance for doubtful accounts of $1,058 |
6,439
|
5,872
|
|
|
Trade, dry-leasing |
0
|
0
|
|
|
Tax receivables |
3,465
|
2,829
|
|
|
Other |
1,171
|
497
|
|
|
Inventories, net |
393
|
366
|
|
|
Prepaid expenses |
198
|
133
|
|
|
Escrow deposits |
|
0
|
|
|
Total current assets |
14,024
|
12,480
|
|
|
Property and equipment |
16,113
|
16,024
|
|
|
Accumulated depreciation |
(2,713)
|
(2,455)
|
|
|
Property and equipment, net |
13,400
|
13,569
|
|
|
Equity investments and advances |
0
|
0
|
|
|
Investments in consolidated subsidiaries |
0
|
0
|
|
|
Intangible assets |
1,118
|
1,122
|
|
|
Deferred taxes |
|
0
|
|
|
Intercompany receivables |
0
|
0
|
|
|
Other assets |
70
|
60
|
|
|
Total assets |
28,612
|
27,231
|
|
|
Current liabilities: |
|
|
|
|
Accounts payable and accrued expenses |
2,435
|
2,128
|
|
|
Accrued wages and benefits |
1,671
|
1,460
|
|
|
Accrued interest |
0
|
0
|
|
|
Accrued income taxes |
22
|
4
|
|
|
Accrued other taxes |
481
|
600
|
|
|
Accrued contingencies |
892
|
859
|
|
|
Current portion of long-term debt |
772
|
1,073
|
|
|
Other current liabilities |
30
|
37
|
|
|
Total current liabilities |
6,303
|
6,161
|
|
|
Long-term debt (including $467 and $1,903 from VIEs in 2018 and 2017, respectively) |
467
|
1,903
|
|
|
Deferred income taxes |
1,250
|
1,250
|
|
|
Intercompany payables |
49,748
|
45,146
|
|
|
Other liabilities |
6
|
(1)
|
|
|
Total liabilities |
57,774
|
54,459
|
|
|
Redeemable noncontrolling interest |
3,599
|
3,762
|
|
|
Equity: |
|
|
|
|
Common stock, $0.01 par value, 60,000,000 shares authorized; 21,688,959 and 21,319,150 outstanding in 2018 and 2017, respectively, exclusive of treasury shares |
0
|
0
|
|
|
Additional paid-in capital |
4,562
|
4,562
|
|
|
Retained earnings |
(37,323)
|
(35,552)
|
|
|
Treasury shares, at cost, 215,141 and 215,141 shares in 2018 and 2017, respectively |
0
|
0
|
|
|
Accumulated other comprehensive income, net of tax |
0
|
0
|
|
|
Total equity |
(32,761)
|
(30,990)
|
|
|
Total liabilities, redeemable noncontrolling interest and stockholders’ equity |
28,612
|
27,231
|
|
|
Eliminations |
|
|
|
|
Current assets: |
|
|
|
|
Cash and cash equivalents |
0
|
|
|
|
Receivables: |
|
|
|
|
Trade, operating, net of allowance for doubtful accounts of $1,058 |
0
|
0
|
|
|
Trade, dry-leasing |
0
|
0
|
|
|
Tax receivables |
0
|
0
|
|
|
Other |
0
|
0
|
|
|
Inventories, net |
0
|
0
|
|
|
Deferred income taxes |
(21,136)
|
|
|
|
Prepaid expenses |
0
|
0
|
|
|
Escrow deposits |
|
0
|
|
|
Total current assets |
(21,136)
|
0
|
|
|
Property and equipment |
0
|
0
|
|
|
Accumulated depreciation |
0
|
0
|
|
|
Property and equipment, net |
0
|
0
|
|
|
Equity investments and advances |
0
|
0
|
|
|
Investments in consolidated subsidiaries |
(167,177)
|
(161,350)
|
|
|
Intangible assets |
0
|
0
|
|
|
Deferred taxes |
|
(19,600)
|
|
|
Intercompany receivables |
(408,068)
|
(426,806)
|
|
|
Other assets |
0
|
0
|
|
|
Total assets |
(596,381)
|
(607,756)
|
|
|
Current liabilities: |
|
|
|
|
Accounts payable and accrued expenses |
0
|
0
|
|
|
Accrued wages and benefits |
0
|
0
|
|
|
Accrued interest |
0
|
0
|
|
|
Accrued income taxes |
0
|
0
|
|
|
Accrued other taxes |
0
|
0
|
|
|
Accrued contingencies |
0
|
0
|
|
|
Current portion of long-term debt |
0
|
0
|
|
|
Other current liabilities |
0
|
0
|
|
|
Total current liabilities |
0
|
0
|
|
|
Long-term debt (including $467 and $1,903 from VIEs in 2018 and 2017, respectively) |
0
|
0
|
|
|
Deferred income taxes |
(21,136)
|
(19,600)
|
|
|
Intercompany payables |
(408,068)
|
(426,806)
|
|
|
Other liabilities |
0
|
0
|
|
|
Total liabilities |
(429,204)
|
(446,406)
|
|
|
Redeemable noncontrolling interest |
0
|
0
|
|
|
Equity: |
|
|
|
|
Common stock, $0.01 par value, 60,000,000 shares authorized; 21,688,959 and 21,319,150 outstanding in 2018 and 2017, respectively, exclusive of treasury shares |
0
|
0
|
|
|
Additional paid-in capital |
(104,868)
|
(104,868)
|
|
|
Retained earnings |
(62,309)
|
(56,482)
|
|
|
Treasury shares, at cost, 215,141 and 215,141 shares in 2018 and 2017, respectively |
0
|
0
|
|
|
Accumulated other comprehensive income, net of tax |
0
|
0
|
|
|
Total equity |
(167,177)
|
(161,350)
|
|
|
Total liabilities, redeemable noncontrolling interest and stockholders’ equity |
$ (596,381)
|
$ (607,756)
|
|
|