Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation Schedule of Stock Options (Details)

v3.7.0.1
Stock-Based Compensation Schedule of Stock Options (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]      
Fair value of options granted $ 556 $ 1,119 $ 612
Per share weighted average fair value of options granted (dollars per share) $ 1.49 $ 1.81 $ 4.60
Total intrinsic value of stock options exercised $ 0 $ 131 $ 242