Quarterly report pursuant to Section 13 or 15(d)

GUARANTORS OF SECURITIES (Condensed Cash Flow Statement) (Details)

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GUARANTORS OF SECURITIES (Condensed Cash Flow Statement) (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Condensed Cash Flow Statements, Captions [Line Items]    
Net cash provided by provided by operating activities $ 5,138 $ 13,374
Cash flows from investing activities:    
Purchases of property and equipment (5,958) (12,524)
Proceeds from disposition of property and equipment 29,497 5,689
Investments in and advances to equity investees 0 (126)
Principal payments on notes due from equity investees 186 375
Principal payments on third party notes receivable 571 94
Net cash provided by (used in) investing activities 24,296 (6,492)
Cash flows from financing activities:    
Payments on long-term debt (30,012) (18,162)
Long-term debt issuance costs (1,295)  
Proceeds from Revolving Credit Facility 0 9,000
Proceeds from share award plans 484 463
Purchase of treasury shares 0 (51)
Borrowings and repayments of intercompany debt 0 9,000
Net cash used in financing activities (30,823) (8,750)
Effects of exchange rate changes on cash and cash equivalents (387) 19
Net increase (decrease) in cash and cash equivalents (1,776) (1,849)
Cash, cash equivalents and restricted cash, beginning of period 16,833 30,727
Cash, cash equivalents and restricted cash, end of period 15,057 28,878
Reportable Legal Entities | Parent    
Condensed Cash Flow Statements, Captions [Line Items]    
Net cash provided by provided by operating activities 2,037 1,967
Cash flows from investing activities:    
Purchases of property and equipment 0 0
Proceeds from disposition of property and equipment 0 0
Investments in and advances to equity investees   0
Principal payments on notes due from equity investees 0 0
Principal payments on third party notes receivable 0 0
Net cash provided by (used in) investing activities 0 0
Cash flows from financing activities:    
Payments on long-term debt 0 0
Long-term debt issuance costs 0  
Proceeds from Revolving Credit Facility   0
Proceeds from share award plans 0 0
Purchase of treasury shares   0
Borrowings and repayments of intercompany debt 0 0
Net cash used in financing activities 0 0
Effects of exchange rate changes on cash and cash equivalents 0 0
Net increase (decrease) in cash and cash equivalents 2,037 1,967
Cash, cash equivalents and restricted cash, beginning of period 10,800 25,474
Cash, cash equivalents and restricted cash, end of period 12,837 27,441
Reportable Legal Entities | Guarantors    
Condensed Cash Flow Statements, Captions [Line Items]    
Net cash provided by provided by operating activities 922 11,086
Cash flows from investing activities:    
Purchases of property and equipment (5,779) (12,490)
Proceeds from disposition of property and equipment 29,497 5,689
Investments in and advances to equity investees   (126)
Principal payments on notes due from equity investees 186 375
Principal payments on third party notes receivable 571 94
Net cash provided by (used in) investing activities 24,475 (6,458)
Cash flows from financing activities:    
Payments on long-term debt (831) (832)
Long-term debt issuance costs 0  
Proceeds from Revolving Credit Facility   0
Proceeds from share award plans 0 0
Purchase of treasury shares   0
Borrowings and repayments of intercompany debt (27,811) (7,588)
Net cash used in financing activities (28,642) (8,420)
Effects of exchange rate changes on cash and cash equivalents (5) 15
Net increase (decrease) in cash and cash equivalents (3,250) (3,777)
Cash, cash equivalents and restricted cash, beginning of period 3,250 3,777
Cash, cash equivalents and restricted cash, end of period 0 0
Reportable Legal Entities | Non-guarantors    
Condensed Cash Flow Statements, Captions [Line Items]    
Net cash provided by provided by operating activities 2,179 321
Cash flows from investing activities:    
Purchases of property and equipment (179) (34)
Proceeds from disposition of property and equipment 0 0
Investments in and advances to equity investees   0
Principal payments on notes due from equity investees 0 0
Principal payments on third party notes receivable 0 0
Net cash provided by (used in) investing activities (179) (34)
Cash flows from financing activities:    
Payments on long-term debt (2,181) (330)
Long-term debt issuance costs 0  
Proceeds from Revolving Credit Facility   0
Proceeds from share award plans 0 0
Purchase of treasury shares   0
Borrowings and repayments of intercompany debt 0 0
Net cash used in financing activities (2,181) (330)
Effects of exchange rate changes on cash and cash equivalents (382) 4
Net increase (decrease) in cash and cash equivalents (563) (39)
Cash, cash equivalents and restricted cash, beginning of period 2,783 1,476
Cash, cash equivalents and restricted cash, end of period 2,220 1,437
Eliminations    
Condensed Cash Flow Statements, Captions [Line Items]    
Net cash provided by provided by operating activities 0 0
Cash flows from investing activities:    
Purchases of property and equipment 0 0
Proceeds from disposition of property and equipment 0 0
Investments in and advances to equity investees   0
Principal payments on notes due from equity investees 0 0
Principal payments on third party notes receivable 0 0
Net cash provided by (used in) investing activities 0 0
Cash flows from financing activities:    
Payments on long-term debt (27,000) (17,000)
Long-term debt issuance costs (1,295)  
Proceeds from Revolving Credit Facility   9,000
Proceeds from share award plans 484 463
Purchase of treasury shares   (51)
Borrowings and repayments of intercompany debt 27,811 16,588
Net cash used in financing activities 0 0
Effects of exchange rate changes on cash and cash equivalents 0 0
Net increase (decrease) in cash and cash equivalents 0 0
Cash, cash equivalents and restricted cash, beginning of period 0 0
Cash, cash equivalents and restricted cash, end of period $ 0 $ 0