Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation Schedule of Share-based Compensation Rollforward (Details)

v3.3.1.900
Stock-Based Compensation Schedule of Share-based Compensation Rollforward (Details) - 2007 and 1992 Stock Incentive Plans - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Options outstanding, beginning of year (in shares) 1,635 1,748 1,925
Number of options granted 617 133 389
Options exercised (in shares) (20) (86) (1)
Options canceled (in shares) (419) (160) (565)
Options outstanding, end of year (in shares) 1,813 1,635 1,748
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]      
Options outstanding, weighted-average exercise price, beginning of year (dollars per share) $ 12.84 $ 12.95 $ 13.81
Options granted, weighted-average exercise price (dollars per share) 4.73 14.58 11.78
Options exercised, weighted-average exercise price (dollars per share) 7.27 12.28 9.26
Options canceled, weighted-average exercise price (dollars per share) 13.45 15.75 15.10
Options outstanding, weighted-average exercise price, end of year (dollars per share) $ 10.00 $ 12.84 $ 12.95
Weighted-average remaining contractual term for options outstanding (In years) 3 years 353 days    
Aggregate intrinsic value of options outstanding (value) $ 0    
Options subject to exercise at December 31, 2015 (in shares) 969 1,003 881
Weighted-average exercise price for options subject to exercise at December 31, 2015 (dollars per share) $ 13.09 $ 14.15 $ 15.55
Weighted-average remaining contractual term for options subject to exercise at December 31, 2015 2 years 33 days    
Aggregate intrinsic value for options subject to exercise at December 31, 2015 (value) $ 0