Share-Based Compensation and Warrants - Additional Information (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Dec. 31, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Share Based Compensation [Abstract]
Stock options granted to purchase common stock		22,500		22,500
Unrecognized compensation costs related to non-vested stock options		$ 3.2		$ 3.2
Expected weighted average period to recognize compensation cost on restricted stock (in years)				8 months 12 days
Number of stock options exercised		0	0	0	0
Share-based compensation arrangement by share-based payment award, stock options, vested and expected to vest, outstanding, aggregate intrinsic value		$ 7.7		$ 7.7
Compensation expense recognized for outstanding share-based awards	$ 0.6	$ 1.1	$ 2.1	$ 4.5	$ 4.2