Equity-Based Compensation - Summary of Stock Option Activity Under the 2010 Plan and Equity Plan (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
2010 Equity Award Plan [Member]
Stock Option Activity, Options
Beginning of period, outstanding (in shares)	820,471	631,846	660,471
Options granted (in shares)	180,384	282,500	107,000
Stock Option Plan share issuance, shares	0	0	(5,000)
Options canceled or forfeited (in shares)	0	(13,500)	(130,625)
Options expired (in shares)	0	(80,375)	0
End of period, outstanding (in shares)	1,000,855	820,471	631,846
Options exercisable (in shares)	513,295
Weighted-Average Exercise Price
Beginning of period (weighted-average price)	$ 13.21	$ 15.89	$ 15.93
Options granted (weighted-average price)	4.95	7.51	16.93
Options exercised (weighted-average price)	0	0	13.18
Options canceled or forfeited (weighted-average price)	0	17.87	17.02
Options expired (weighted-average price)	0	13.49	0
End of period (weighted-average price)	11.72	$ 13.21	$ 15.89
Options exercisable (weighted-average price)	$ 15.72
2000 Equity Award Plan [Member]
Stock Option Activity, Options
Beginning of period, outstanding (in shares)	1,356,375	1,868,597	2,472,147
Options granted (in shares)	0	0	0
Stock Option Plan share issuance, shares	(182,500)	(473,472)	(601,800)
Options canceled or forfeited (in shares)	0	0	0
Options expired (in shares)	(2,950)	(38,750)	(1,750)
End of period, outstanding (in shares)	1,170,925	1,356,375	1,868,597
Options exercisable (in shares)	1,170,925
Weighted-Average Exercise Price
Beginning of period (weighted-average price)	$ 4.89	$ 4.82	$ 4.67
Options granted (weighted-average price)	0	0	0
Options exercised (weighted-average price)	4.27	4.66	4.23
Options canceled or forfeited (weighted-average price)	0	0	0
Options expired (weighted-average price)	5.79	4.13	4.34
End of period (weighted-average price)	4.98	$ 4.89	$ 4.82
Options exercisable (weighted-average price)	$ 4.98