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
 9 Months Ended 12 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Condensed Cash Flow Statements, Captions [Line Items]      
Net cash provided by (used in) operating activities $ 46,483 $ 35,843  
Cash flows from investing activities:      
Purchases of property and equipment (10,712) (47,260)  
Proceeds from disposition of property and equipment 6,138 20,631  
Cash settlements on forward contracts, net 0 (1,103)  
Return of helicopter deposits 544 0  
Business acquisitions, net of cash acquired 0 (3,165)  
Proceeds from sale of FBO 0 14,252  
Principal payments on notes due from equity investees 539 514  
Principal payments on third party notes receivable 212 25  
Escrow deposits, net 0 (340)  
Escrow deposits on like-kind exchanges, net 0 (1,857)  
Repayment of intercompany debt   0  
Net cash used in investing activities (3,279) (18,303)  
Cash flows from financing activities:      
Payments on long-term debt (29,538) (52,149)  
Proceeds from Revolving Credit Facility 7,000 35,000  
Extinguishment of long-term debt (4,331) (24,335)  
Proceeds from share award plans 836 1,096  
Purchase of treasury shares (161) (2,069)  
Tax expense on vested restricted stock 0 (114)  
Repayment of intercompany debt 0 0  
Net cash used in financing activities (26,194) (42,571)  
Effects of exchange rate changes on cash and cash equivalents 764 (2,028)  
Net increase (decrease) in cash and cash equivalents 17,774 (27,059)  
Cash and cash equivalents, beginning of period 14,370 [1] 40,867 $ 40,867
Cash and cash equivalents, end of period 32,144 13,808 14,370 [1]
Parent      
Condensed Cash Flow Statements, Captions [Line Items]      
Net cash provided by (used in) operating activities 21,127 (5,604)  
Cash flows from investing activities:      
Purchases of property and equipment 0 0  
Proceeds from disposition of property and equipment 0 0  
Cash settlements on forward contracts, net   0  
Return of helicopter deposits 0    
Business acquisitions, net of cash acquired   0  
Proceeds from sale of FBO   0  
Principal payments on notes due from equity investees 0 0  
Principal payments on third party notes receivable 0 0  
Escrow deposits, net   0  
Escrow deposits on like-kind exchanges, net   0  
Repayment of intercompany debt   0  
Net cash used in investing activities 0 0  
Cash flows from financing activities:      
Payments on long-term debt 0 0  
Proceeds from Revolving Credit Facility 0 0  
Extinguishment of long-term debt 0 0  
Proceeds from share award plans 0 0  
Purchase of treasury shares 0 0  
Tax expense on vested restricted stock   0  
Repayment 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 21,127 (5,604)  
Cash and cash equivalents, beginning of period 7,565 16,481 16,481
Cash and cash equivalents, end of period 28,692 10,877 7,565
Guarantors      
Condensed Cash Flow Statements, Captions [Line Items]      
Net cash provided by (used in) operating activities 26,296 25,718  
Cash flows from investing activities:      
Purchases of property and equipment (10,537) (47,257)  
Proceeds from disposition of property and equipment 5,910 32,401  
Cash settlements on forward contracts, net   0  
Return of helicopter deposits 544    
Business acquisitions, net of cash acquired   0  
Proceeds from sale of FBO   0  
Principal payments on notes due from equity investees 539 514  
Principal payments on third party notes receivable 212 25  
Escrow deposits, net   (150)  
Escrow deposits on like-kind exchanges, net   (1,857)  
Repayment of intercompany debt   12,959  
Net cash used in investing activities (3,332) (3,365)  
Cash flows from financing activities:      
Payments on long-term debt (1,386) (2,091)  
Proceeds from Revolving Credit Facility 0 0  
Extinguishment of long-term debt 0 0  
Proceeds from share award plans 0 0  
Purchase of treasury shares 0 0  
Tax expense on vested restricted stock   0  
Repayment of intercompany debt (23,656) (40,422)  
Net cash used in financing activities (25,042) (42,513)  
Effects of exchange rate changes on cash and cash equivalents 346 (2,028)  
Net increase (decrease) in cash and cash equivalents (1,732) (22,188)  
Cash and cash equivalents, beginning of period 3,334 22,188 22,188
Cash and cash equivalents, end of period 1,602 0 3,334
Non-guarantors      
Condensed Cash Flow Statements, Captions [Line Items]      
Net cash provided by (used in) operating activities (940) 15,729  
Cash flows from investing activities:      
Purchases of property and equipment (175) (11,773)  
Proceeds from disposition of property and equipment 228 0  
Cash settlements on forward contracts, net   0  
Return of helicopter deposits 0    
Business acquisitions, net of cash acquired   (3,165)  
Proceeds from sale of FBO   0  
Principal payments on notes due from equity investees 0 0  
Principal payments on third party notes receivable 0 0  
Escrow deposits, net   0  
Escrow deposits on like-kind exchanges, net   0  
Repayment of intercompany debt   0  
Net cash used in investing activities 53 (14,938)  
Cash flows from financing activities:      
Payments on long-term debt (1,152) (58)  
Proceeds from Revolving Credit Facility 0 0  
Extinguishment of long-term debt 0 0  
Proceeds from share award plans 0 0  
Purchase of treasury shares 0 0  
Tax expense on vested restricted stock   0  
Repayment of intercompany debt 0 0  
Net cash used in financing activities (1,152) (58)  
Effects of exchange rate changes on cash and cash equivalents 418 0  
Net increase (decrease) in cash and cash equivalents (1,621) 733  
Cash and cash equivalents, beginning of period 3,471 2,198 2,198
Cash and cash equivalents, end of period 1,850 2,931 3,471
Eliminations      
Condensed Cash Flow Statements, Captions [Line Items]      
Net cash provided by (used in) operating activities 0 0  
Cash flows from investing activities:      
Purchases of property and equipment 0 11,770  
Proceeds from disposition of property and equipment 0 (11,770)  
Cash settlements on forward contracts, net   (1,103)  
Return of helicopter deposits 0    
Business acquisitions, net of cash acquired   0  
Proceeds from sale of FBO   14,252  
Principal payments on notes due from equity investees 0 0  
Principal payments on third party notes receivable 0 0  
Escrow deposits, net   (190)  
Escrow deposits on like-kind exchanges, net   0  
Repayment of intercompany debt   (12,959)  
Net cash used in investing activities 0 0  
Cash flows from financing activities:      
Payments on long-term debt (27,000) (50,000)  
Proceeds from Revolving Credit Facility 7,000 35,000  
Extinguishment of long-term debt (4,331) (24,335)  
Proceeds from share award plans 836 1,096  
Purchase of treasury shares (161) (2,069)  
Tax expense on vested restricted stock   (114)  
Repayment of intercompany debt 23,656 40,422  
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 and cash equivalents, beginning of period 0 0 0
Cash and cash equivalents, end of period $ 0 $ 0 $ 0
[1] Adjusted for the adoption of Accounting Standards Update (“ASU”) 2015-03 on January 1, 2016 whereby $2,740 of debt issuance costs previously included in other assets are now included in long-term debt.