Consolidating Financial Information - Schedule of Condensed Consolidating Statement of Cash Flows (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Cash flows from operating activities:      
Net income (loss) $ (10,231,000) $ 9,866,000 $ 15,636,000
Adjustments to reconcile net income (loss) to net cash provided by operating activities:      
Depreciation and amortization 34,903,000 33,328,000 21,661,000
Impairment of goodwill 21,272,000 0 0
Deferred income taxes (7,790,000) 5,214,000 2,682,000
Non-cash income from satisfaction of return to service liability (1,869,000) 0 0
Non-cash interest expense on debt 324,000 1,877,000 3,137,000
Stock-based compensation 861,000 792,000 2,118,000
Write-off of debt issuance costs related to the early extinguishment of debt 0 215,000 0
Non-cash interest income on loans 0 (140,000) 0
Amortization of debt issuance costs 2,433,000 2,067,000 1,174,000
Loss (gain) on sale of equipment (358,000) (1,000) 5,000
Loss on sale of term loan note receivable 0 3,441,000 0
Gain on involuntary conversion (308,000) 0 0
Changes in operating assets and liabilities:      
Accounts receivable 19,719,000 (20,991,000) 2,679,000
Prepaid expenses and other current assets (5,544,000) 427,000 2,803,000
Income tax receivable, net 434,000 915,000 201,000
Aircraft support parts, net (17,240,000) (32,001,000) (27,355,000)
Other non-current assets 5,602,000 (3,131,000) 0
Accounts payable (8,856,000) (19,502,000) (85,000)
Accrued and other current liabilities (20,652,000) (6,350,000) 199,000
Income tax payable 629,000 (304,000) 6,215,000
Other long-term liabilities 655,000 (514,000) (2,912,000)
Net cash provided by (used in) operating activities 13,984,000 (24,792,000) 28,158,000
Cash flows from investing activities:      
Restricted cash 2,222,000 958,000 1,438,000
Purchase of intangible assets 0 (2,205,000) 0
Proceeds from sale-leaseback of aircraft 24,660,000 0 0
Dividends paid to noncontrolling interest (69,000) (341,000) (297,000)
Proceeds from sale of term loan note receivable 0 1,660,000 0
Decrease (increase) in other assets (126,000) (35,000) 103,000
Acquisition of businesses, net of cash acquired 0 (226,868,000) 0
Purchases of aircraft and property, plant and equipment (56,807,000) (56,104,000) (22,736,000)
Net cash used in investing activities (30,120,000) (282,935,000) (21,492,000)
Cash flows from financing activities:      
Proceeds from shareholders, net 414,000    
Proceeds from issuance of common stock, net of expenses 0 0 31,454,000
Repayments of subordinated notes 0 (27,572,000) 0
Repayments of credit facilities (206,686,000) (250,215,000) (327,063,000)
Borrowings from credit facilities 227,939,000 246,377,000 291,234,000
Other long-term borrowings 409,000 0 0
Repayment of notes 0 (45,000,000) 0
Borrowing of notes 0 400,000,000 0
Debt issuance costs (371,000) (14,986,000) (376,000)
Shares withheld for payment of taxes (211,000) (716,000) (695,000)
Net cash provided by (used in) financing activities 21,494,000 307,888,000 (5,446,000)
Effect of foreign currency exchange rates on cash and cash equivalents (2,142,000) 252,000 (20,000)
Net increase in cash and cash equivalents 3,216,000 413,000 1,200,000
Cash and cash equivalents at beginning of period 1,881,000 1,468,000 268,000
Cash and cash equivalents at end of period 5,097,000 1,881,000 1,468,000
Parent Company      
Cash flows from operating activities:      
Net income (loss) (9,800,000) (11,051,000) 17,252,000
Adjustments to reconcile net income (loss) to net cash provided by operating activities:      
Depreciation and amortization 23,366,000 25,535,000 21,428,000
Impairment of goodwill 0    
Deferred income taxes (8,224,000) 4,543,000 2,682,000
Non-cash income from satisfaction of return to service liability 0    
Non-cash interest expense on debt 324,000 1,877,000 3,137,000
Stock-based compensation 861,000 792,000 2,118,000
Write-off of debt issuance costs related to the early extinguishment of debt   215,000  
Non-cash interest income on loans   (140,000)  
Amortization of debt issuance costs 2,433,000 2,067,000 1,174,000
Loss (gain) on sale of equipment (121,000) (25,000) 5,000
Loss on sale of term loan note receivable   3,441,000  
Gain on involuntary conversion 0    
Changes in operating assets and liabilities:      
Accounts receivable 4,173,000 (5,866,000) (1,144,000)
Prepaid expenses and other current assets (4,628,000) (614,000) 2,496,000
Income tax receivable, net (210,000) 170,000 1,011,000
Aircraft support parts, net (17,900,000) (12,354,000) (27,355,000)
Other non-current assets 1,741,000 (1,114,000)  
Accounts payable (2,161,000) 1,304,000 2,313,000
Accrued and other current liabilities (4,402,000) (45,424,000) 422,000
Income tax payable (407,000) 0 5,516,000
Other long-term liabilities (54,000) (514,000) (2,912,000)
Net cash provided by (used in) operating activities (15,009,000) (37,158,000) 28,143,000
Cash flows from investing activities:      
Restricted cash 13,000 992,000 198,000
Purchase of intangible assets   (2,205,000)  
Proceeds from sale-leaseback of aircraft 24,660,000    
Dividends paid to noncontrolling interest 0 0 (297,000)
Proceeds from sale of term loan note receivable   1,660,000  
Decrease (increase) in other assets 0 0 136,000
Acquisition of businesses, net of cash acquired   (235,029,000)  
Purchases of aircraft and property, plant and equipment (30,110,000) (35,530,000) (22,695,000)
Net cash used in investing activities (5,437,000) (270,112,000) (22,658,000)
Cash flows from financing activities:      
Proceeds from shareholders, net 414,000    
Proceeds from issuance of common stock, net of expenses     31,454,000
Repayments of subordinated notes   (27,572,000)  
Repayments of credit facilities (206,686,000) (250,215,000) (327,063,000)
Borrowings from credit facilities 227,939,000 246,377,000 291,234,000
Other long-term borrowings 409,000    
Repayment of notes   (45,000,000)  
Borrowing of notes   400,000,000  
Debt issuance costs (371,000) (14,986,000) (376,000)
Shares withheld for payment of taxes (211,000) (716,000) (695,000)
Net cash provided by (used in) financing activities 21,494,000 307,888,000 (5,446,000)
Effect of foreign currency exchange rates on cash and cash equivalents (1,617,000) (83,000) 0
Net increase in cash and cash equivalents (569,000) 535,000 39,000
Cash and cash equivalents at beginning of period 576,000 41,000 2,000
Cash and cash equivalents at end of period 7,000 576,000 41,000
Guarantor Subsidiaries      
Cash flows from operating activities:      
Net income (loss) (2,431,000) 21,811,000 0
Adjustments to reconcile net income (loss) to net cash provided by operating activities:      
Depreciation and amortization 10,769,000 7,400,000 0
Impairment of goodwill 21,272,000    
Deferred income taxes 0 0 0
Non-cash income from satisfaction of return to service liability (1,869,000)    
Non-cash interest expense on debt 0 0 0
Stock-based compensation 0 0 0
Write-off of debt issuance costs related to the early extinguishment of debt   0  
Non-cash interest income on loans   0  
Amortization of debt issuance costs 0 0 0
Loss (gain) on sale of equipment (32,000) (23,000) 0
Loss on sale of term loan note receivable   0  
Gain on involuntary conversion (308,000)    
Changes in operating assets and liabilities:      
Accounts receivable 14,361,000 (15,440,000) 0
Prepaid expenses and other current assets (588,000) 1,454,000 0
Income tax receivable, net (3,000) 0 0
Aircraft support parts, net 1,177,000 (19,692,000) 0
Other non-current assets 3,620,000 (2,124,000)  
Accounts payable (6,422,000) (21,376,000) 0
Accrued and other current liabilities (14,760,000) 43,153,000 0
Income tax payable 0 0 0
Other long-term liabilities 709,000 0 0
Net cash provided by (used in) operating activities 25,495,000 15,163,000 0
Cash flows from investing activities:      
Restricted cash 365,000 (364,000) 0
Purchase of intangible assets   0  
Proceeds from sale-leaseback of aircraft 0    
Dividends paid to noncontrolling interest 0 0 0
Proceeds from sale of term loan note receivable   0  
Decrease (increase) in other assets 0 0 0
Acquisition of businesses, net of cash acquired   5,139,000  
Purchases of aircraft and property, plant and equipment (25,574,000) (19,950,000) 0
Net cash used in investing activities (25,209,000) (15,175,000) 0
Cash flows from financing activities:      
Proceeds from shareholders, net 0    
Proceeds from issuance of common stock, net of expenses     0
Repayments of subordinated notes   0  
Repayments of credit facilities 0 0 0
Borrowings from credit facilities 0 0 0
Other long-term borrowings 0    
Repayment of notes   0  
Borrowing of notes   0  
Debt issuance costs 0 0 0
Shares withheld for payment of taxes 0 0 0
Net cash provided by (used in) financing activities 0 0 0
Effect of foreign currency exchange rates on cash and cash equivalents 0 0 0
Net increase in cash and cash equivalents 286,000 (12,000) 0
Cash and cash equivalents at beginning of period (12,000) 0 0
Cash and cash equivalents at end of period 274,000 (12,000) 0
Non-Guarantor Subsidiaries      
Cash flows from operating activities:      
Net income (loss) 2,108,000 (512,000) (1,357,000)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:      
Depreciation and amortization 768,000 393,000 233,000
Impairment of goodwill 0    
Deferred income taxes 434,000 554,000 0
Non-cash income from satisfaction of return to service liability 0    
Non-cash interest expense on debt 0 0 0
Stock-based compensation 0 0 0
Write-off of debt issuance costs related to the early extinguishment of debt   0  
Non-cash interest income on loans   0  
Amortization of debt issuance costs 0 0 0
Loss (gain) on sale of equipment (205,000) 47,000 0
Loss on sale of term loan note receivable   0  
Gain on involuntary conversion       
Changes in operating assets and liabilities:      
Accounts receivable 1,143,000 298,000 3,811,000
Prepaid expenses and other current assets (328,000) (413,000) 307,000
Income tax receivable, net 669,000 745,000 (810,000)
Aircraft support parts, net (517,000) 0 0
Other non-current assets 241,000 107,000  
Accounts payable (273,000) 570,000 (2,398,000)
Accrued and other current liabilities (936,000) (1,080,000) (470,000)
Income tax payable 461,000 (187,000) 699,000
Other long-term liabilities 0 0 0
Net cash provided by (used in) operating activities 3,565,000 522,000 15,000
Cash flows from investing activities:      
Restricted cash 1,844,000 330,000 1,240,000
Purchase of intangible assets   0  
Proceeds from sale-leaseback of aircraft 0    
Dividends paid to noncontrolling interest (136,000) (651,000) 0
Proceeds from sale of term loan note receivable   0  
Decrease (increase) in other assets (126,000) (35,000) (33,000)
Acquisition of businesses, net of cash acquired   22,000  
Purchases of aircraft and property, plant and equipment (1,123,000) (624,000) (41,000)
Net cash used in investing activities 459,000 (958,000) 1,166,000
Cash flows from financing activities:      
Proceeds from shareholders, net 0    
Proceeds from issuance of common stock, net of expenses     0
Repayments of subordinated notes   0  
Repayments of credit facilities 0 0 0
Borrowings from credit facilities 0 0 0
Other long-term borrowings 0    
Repayment of notes   0  
Borrowing of notes   0  
Debt issuance costs 0 0 0
Shares withheld for payment of taxes 0 0 0
Net cash provided by (used in) financing activities 0 0 0
Effect of foreign currency exchange rates on cash and cash equivalents (525,000) 326,000 (20,000)
Net increase in cash and cash equivalents 3,499,000 (110,000) 1,161,000
Cash and cash equivalents at beginning of period 1,317,000 1,427,000 266,000
Cash and cash equivalents at end of period 4,816,000 1,317,000 1,427,000
Consolidating Entries and Eliminations      
Cash flows from operating activities:      
Net income (loss) (108,000) (382,000) (259,000)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:      
Depreciation and amortization 0 0 0
Impairment of goodwill 0    
Deferred income taxes 0 117,000 0
Non-cash income from satisfaction of return to service liability 0    
Non-cash interest expense on debt 0 0 0
Stock-based compensation 0 0 0
Write-off of debt issuance costs related to the early extinguishment of debt   0  
Non-cash interest income on loans   0  
Amortization of debt issuance costs 0 0 0
Loss (gain) on sale of equipment 0 0 0
Loss on sale of term loan note receivable   0  
Gain on involuntary conversion 0    
Changes in operating assets and liabilities:      
Accounts receivable 42,000 17,000 12,000
Prepaid expenses and other current assets 0 0 0
Income tax receivable, net (22,000) 0 0
Aircraft support parts, net 0 45,000 0
Other non-current assets 0 0  
Accounts payable 0 0 0
Accrued and other current liabilities (554,000) (2,999,000) 247,000
Income tax payable 575,000 (117,000) 0
Other long-term liabilities 0 0 0
Net cash provided by (used in) operating activities (67,000) (3,319,000) 0
Cash flows from investing activities:      
Restricted cash 0 0 0
Purchase of intangible assets   0  
Proceeds from sale-leaseback of aircraft 0    
Dividends paid to noncontrolling interest 67,000 310,000 0
Proceeds from sale of term loan note receivable   0  
Decrease (increase) in other assets 0 0 0
Acquisition of businesses, net of cash acquired   3,000,000  
Purchases of aircraft and property, plant and equipment 0 0 0
Net cash used in investing activities 67,000 3,310,000 0
Cash flows from financing activities:      
Proceeds from shareholders, net 0    
Proceeds from issuance of common stock, net of expenses     0
Repayments of subordinated notes   0  
Repayments of credit facilities 0 0 0
Borrowings from credit facilities 0 0 0
Other long-term borrowings 0    
Repayment of notes   0  
Borrowing of notes   0  
Debt issuance costs 0 0 0
Shares withheld for payment of taxes 0 0 0
Net cash provided by (used in) financing activities 0 0 0
Effect of foreign currency exchange rates on cash and cash equivalents 0 9,000 0
Net increase in cash and cash equivalents 0 0 0
Cash and cash equivalents at beginning of period 0 0 0
Cash and cash equivalents at end of period $ 0 $ 0 $ 0