Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($)	Sep. 30, 2016	Dec. 31, 2015	Nov. 15, 2013
Debt Instrument [Line Items]
Less: Current portion due within one year	$ (2,082,000)	$ (2,810,000)
Long-term portion	194,947,000	263,930,000
Secured Debt [Member] | 2013 Term Loan Facility [Member]
Debt Instrument [Line Items]
2013 Term Loan Facility outstanding principal balance	202,521,000	275,417,000	$ 325,000,000
Less: Unamortized discount	(4,081,000)	(6,418,000)	$ (1,625,000)
Less: Deferred financing costs	(1,411,000)	(2,259,000)
Less: Current portion due within one year	(2,082,000)	(2,810,000)
Long-term portion	$ 194,947,000	$ 263,930,000