Long-Term Debt and Other Liabilities - Additional Information (Detail) (USD $)	3 Months Ended					3 Months Ended			3 Months Ended	0 Months Ended		3 Months Ended		3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Mar. 31, 2014 Letters of Credit [Member]	Dec. 31, 2013 Letters of Credit [Member]	Mar. 31, 2014 Amended Senior Term Facility [Member]	Dec. 31, 2013 Amended Senior Term Facility [Member]	Mar. 31, 2014 Amended Senior Term Facility [Member] Interest Rate [Member]	Mar. 31, 2013 Senior Term Facility [Member]	Nov. 12, 2011 Alaska Facility [Member]	Nov. 02, 2010 Alaska Facility [Member]	Mar. 31, 2014 Alaska Facility [Member]	Dec. 31, 2013 Alaska Facility [Member]	Mar. 31, 2014 Alaska Facility [Member] Maximum [Member]	Mar. 31, 2013 Alaska Facility [Member] Maximum [Member]
Debt Instrument [Line Items]
Credit facility amount outstanding						$ 239,300,000	$ 240,800,000					$ 1,400,000	$ 1,500,000
Principal payment						1,600,000
Maturity date of loan due						Jun. 21, 2017
Interest rate on outstanding LIBOR loans								11.25%
Deferred financing costs						19,600,000
Fees not paid directly to lenders which were treated as interest expense						3,000,000
Total amortization expense of deferred financing costs	836,000	386,000				836,000			386,000
Unamortized deferred financing costs	12,133,000		12,969,000			12,133,000	12,969,000
Amount of credit facility agreement											4,100,000
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
Credit facility/Letters of credit amount outstanding				$ 7,900,000	$ 5,400,000