v3.7.0.1

Condensed Consolidating Financial Information - Guarantor Subsidiaries - Condensed Consolidating Statements of Cash Flows (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Condensed Cash Flow Statements, Captions [Line Items] |  |  |
Net cash (used in) provided by operating activities |  | $ (8,253) | $ (16,343)
Investing activities: |  |  |
Purchase of property and equipment |  | (4,789) | (8,519)
Proceeds from asset dispositions |  |  | 850
Purchase of short-term investments |  | (54,867) | (77,677)
Proceeds from sale of short-term investments |  | 67,659 | 76,184
Payments of deposits on aircraft |  | (66) | (66)
Net cash provided by (used in) investing activities |  | 7,937 | (9,228)
Financing activities: |  |  |
Proceeds from line of credit |  | 37,300 | 83,500
Payments on line of credit |  | (35,800) | (53,300)
Repurchase of common stock |  | (100) | (500)
Net cash provided by (used in) financing activities |  | 1,400 | 29,700
Increase in cash |  | 1,084 | 4,129
Cash, beginning of period |  | 2,596 | 2,407
Cash, end of period |  | 3,680 | 6,536
Parent Company Only (issuer) [Member] |  |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |  |
Net cash (used in) provided by operating activities |  | (19,332) | (13,795)
Investing activities: |  |  |
Purchase of property and equipment |  | (4,738) | (8,519)
Proceeds from asset dispositions |  |  | 850
Purchase of short-term investments |  | (54,867) | (77,677)
Proceeds from sale of short-term investments |  | 67,659 | 76,184
Payments of deposits on aircraft |  | (66) | (66)
Net cash provided by (used in) investing activities |  | 7,988 | (9,228)
Financing activities: |  |  |
Proceeds from line of credit |  | 37,300 | 83,500
Payments on line of credit |  | (35,800) | (53,300)
Repurchase of common stock |  | (100) | (500)
Due to/from affiliate, net |  | 9,959 | (6,600)
Net cash provided by (used in) financing activities |  | 11,359 | 23,100
Increase in cash |  | 15 | 77
Cash, beginning of period |  | 36 | 46
Cash, end of period |  | 51 | 123
Guarantor Subsidiaries [Member] |  |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |  |
Net cash (used in) provided by operating activities | [1] | 11,079 | (2,548)
Investing activities: |  |  |
Purchase of property and equipment | [1] | (51) |
Net cash provided by (used in) investing activities | [1] | (51) |
Financing activities: |  |  |
Due to/from affiliate, net | [1] | (9,959) | 6,600
Net cash provided by (used in) financing activities | [1] | (9,959) | 6,600
Increase in cash | [1] | 1,069 | 4,052
Cash, beginning of period | [1] | 2,560 | 2,361
Cash, end of period | [1] | $ 3,629 | $ 6,413
[1] | Foreign subsidiaries represent minor subsidiaries and are included in the guarantor subsidiaries' amounts.

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