Description of Business and Summary of Significant Accounting Policies (EPS) (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Numerator:
Net income (loss)	$ (1,652)	$ 8,156	$ 3,503
Denominator:
Weighted average common stock outstanding for basic net income (loss) per common share (in shares)	24,121	23,685	10,609
Effect of dilutive securities—stock options, restricted stock units, and warrants to purchase common stock		1,961	11,654
Weighted average common shares and dilutive securities outstanding	24,121	25,646	22,263