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Long-Term Debt and Other Liabilities - Additional Information (Detail) (USD $)
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12 Months Ended | 0 Months Ended | 12 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended | 12 Months Ended | |||||||||||||
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2013
Letters of Credit [Member]
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Dec. 31, 2012
Letters of Credit [Member]
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Apr. 04, 2013
Amended Senior Term Facility [Member]
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Dec. 31, 2013
Amended Senior Term Facility [Member]
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Dec. 31, 2012
Amended Senior Term Facility [Member]
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Dec. 31, 2013
Amended Senior Term Facility [Member]
Interest Rate [Member]
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Dec. 31, 2013
Amended Senior Term Facility [Member]
Minimum [Member]
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Dec. 31, 2013
Amended Senior Term Facility [Member]
Maximum [Member]
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Dec. 31, 2013
Amended Senior Term Facility [Member]
London Interbank Offered Rate (LIBOR) [Member]
Interest Rate [Member]
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Dec. 31, 2013
Amended Senior Term Facility [Member]
Base Rate [Member]
Interest Rate [Member]
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Jun. 21, 2012
Senior Term Facility [Member]
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Dec. 31, 2012
Senior Term Facility [Member]
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Nov. 12, 2011
Alaska Facility [Member]
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Nov. 02, 2010
Alaska Facility [Member]
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Dec. 31, 2013
Alaska Facility [Member]
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Dec. 31, 2012
Alaska Facility [Member]
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Dec. 31, 2013
Alaska Facility [Member]
Maximum [Member]
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Dec. 31, 2012
Alaska Facility [Member]
Maximum [Member]
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Dec. 31, 2011
Alaska Facility [Member]
Maximum [Member]
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| Debt Instrument [Line Items] | ||||||||||||||||||||||
| Net cash proceeds from borrowings | $ 103,000,000 | $ 125,400,000 | ||||||||||||||||||||
| Debt issuance fees | 6,975,000 | 9,630,000 | 9,630,000 | |||||||||||||||||||
| Borrowings under credit facilities | 113,000,000 | 135,000,000 | 520,000 | 113,000,000 | ||||||||||||||||||
| Amount of credit facility agreement | 248,000,000 | 135,000,000 | 4,100,000 | |||||||||||||||||||
| Additional fees paid, New borrowing | 10,000,000 | |||||||||||||||||||||
| Credit facility amount outstanding | 240,800,000 | 133,300,000 | 1,500,000 | 2,000,000 | ||||||||||||||||||
| Percentage owned of capital stock of direct foreign subsidiary | 65.00% | |||||||||||||||||||||
| Minimum cash balance | 5,000,000 | |||||||||||||||||||||
| Principal payment | 1,600,000 | |||||||||||||||||||||
| Maturity date of loan due | Jun. 21, 2017 | |||||||||||||||||||||
| Net asset of borrowers not available for distribution | 102,000,000 | |||||||||||||||||||||
| Weighted average of the rates on overnight federal funds transactions | 0.50% | |||||||||||||||||||||
| Statutory Rate floor | 1.50% | |||||||||||||||||||||
| LIBOR premium 1 | 1.00% | |||||||||||||||||||||
| LIBOR premium 2 | 2.50% | |||||||||||||||||||||
| Libor rate loan margin | 9.75% | |||||||||||||||||||||
| Base rate loan margin | 8.75% | |||||||||||||||||||||
| Interest rate on outstanding LIBOR loans | 11.25% | |||||||||||||||||||||
| Deferred financing costs | 6,975,000 | |||||||||||||||||||||
| Fees not paid directly to lenders which were treated as interest expense | 2,982,000 | 2,982,000 | ||||||||||||||||||||
| Total amortization expense of deferred financing costs | 2,832,000 | 804,000 | 2,832,000 | 804,000 | ||||||||||||||||||
| Unamortized deferred financing costs | 12,969,000 | 8,826,000 | 12,969,000 | 8,826,000 | ||||||||||||||||||
| Leverage ratio | 3.25 | |||||||||||||||||||||
| Percentage used for mandatory prepayment | 50.00% | |||||||||||||||||||||
| Leverage ratio | 2.0 | 3.25 | ||||||||||||||||||||
| Percentage of prepayment | 25.00% | |||||||||||||||||||||
| Leverage ratio | 2.0 | |||||||||||||||||||||
| Voluntary prepayment percentage | 3.00% | |||||||||||||||||||||
| Voluntary prepayment percentage | 3.00% | |||||||||||||||||||||
| Interest rate outstanding | 10.00% | |||||||||||||||||||||
| Term of credit facility | 5 years | 6 years | ||||||||||||||||||||
| Increase in basis points of revenue share | 3.00% | |||||||||||||||||||||
| Revenue share | 100,000 | 100,000 | 100,000 | |||||||||||||||||||
| Credit facility/Letters of credit amount outstanding | $ 5,400,000 | $ 900,000 | ||||||||||||||||||||