Stock-Based Compensation - Summary of Stock Options Outstanding (Details) - $ / shares	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of Stock options outstanding at beginning of period	326,424	13,396
Number of stock options outstanding, Expired	(4,724)	(208)
Number of Stock options outstanding at end of period	321,700	13,188
Number of Stock options exercisable at end of period	321,491	11,139
Weighted average exercise price, Stock options outstanding at beginning of period	$ 24.90	$ 303.36
Weighted average exercise price, Expired	438.89	394.80
Weighted average exercise price, Stock options outstanding at end of period	18.82	300.72
Weighted average exercise price, Stock options exercisable at end of period	$ 18.81	$ 349.56