CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Cash flows from operating activities:      
Net income (loss) $ (10,231) $ 9,866 $ 15,636
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:      
Depreciation and amortization 34,903 33,328 21,661
Impairment of goodwill 21,272 0 0
Deferred income taxes (7,790) 5,214 2,682
Non-cash income from satisfaction of return to service liability (1,869) 0 0
Non-cash interest expense on debt 324 1,877 3,137
Non-cash interest income on loans 0 (140) 0
Write-off of debt issuance costs related to the early extinguishment of debt 0 215 0
Stock-based compensation 861 792 2,118
Amortization of debt issuance costs 2,433 2,067 1,174
Loss (gain) on sale of equipment (358) (1) 5
Gain on involuntary conversion (308) 0 0
Loss on sale of term loan note receivable 0 3,441 0
Changes in operating assets and liabilities:      
Accounts receivable 19,719 (20,991) 2,679
Prepaid expenses and other current assets (5,544) 427 2,803
Income tax receivable 434 915 201
Aircraft support parts, net (17,240) (32,001) (27,355)
Other non-current assets 5,602 (3,131) 0
Accounts payable (8,856) (19,502) (85)
Accrued and other current liabilities (20,652) (6,350) 199
Income tax payable 629 (304) 6,215
Other long-term liabilities 655 (514) (2,912)
Net cash provided by (used in) operating activities 13,984 (24,792) 28,158
Cash flows from investing activities:      
Acquisition of businesses, net of cash acquired (see Note 6) 0 (226,868) 0
Purchases of aircraft and property, plant and equipment, net (56,807) (56,104) (22,736)
Proceeds from sale-leaseback of aircraft 24,660 0 0
Restricted cash 2,222 958 1,438
Purchase of intangible assets 0 (2,205) 0
Proceeds from sale of term loan note receivable 0 1,660 0
Decrease (increase) in other assets (126) (35) 103
Dividends paid to non-controlling interest (69) (341) (297)
Net cash used in investing activities (30,120) (282,935) (21,492)
Cash flows from financing activities:      
Proceeds from issuance of common stock, net of expenses 0 0 31,454
Proceeds from shareholders, net 414 0 0
Repayments of subordinated notes 0 (27,572) 0
Repayments of credit facilities (206,686) (250,215) (327,063)
Borrowings from credit facilities 227,939 246,377 291,234
Borrowing of notes 0 400,000 0
Repayment of notes 0 (45,000) 0
Other long-term borrowings 409 0 0
Debt issuance costs (371) (14,986) (376)
Shares withheld for payment of taxes (211) (716) (695)
Net cash provided by (used in) financing activities 21,494 307,888 (5,446)
Effect of foreign currency exchange rates on cash and cash equivalents (2,142) 252 (20)
Net increase in cash and cash equivalents 3,216 413 1,200
Cash and cash equivalents at beginning of period 1,881 1,468 268
Cash and cash equivalents at end of period 5,097 1,881 1,468
Supplemental disclosure of cash flow information:      
Cash paid for interest 35,693 27,818 3,655
Cash paid for income taxes, net $ 3,925 $ 1,477 $ 1,104