XML 95 R75.htm IDEA: XBRL DOCUMENT v3.3.1.900
Employee Stock Purchase Plan Stock Options and Warrants - Options Outstanding (Details)
shares in Thousands
12 Months Ended
Dec. 31, 2015
$ / shares
shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Range of exercise, lower (in dollars per share) $ 9.95
Range of exercise, upper (in dollars per share) $ 21.98
Number outstanding (in shares) | shares 2,408
Number exercisable (in shares) | shares 992
$9.95 - $12.91  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Range of exercise, lower (in dollars per share) $ 9.95
Range of exercise, upper (in dollars per share) $ 12.91
Number outstanding (in shares) | shares 671
Weighted Average Remaining Contractual Life (in years) 5 years 2 months 11 days
Weighted average exercise price (in dollars per share) $ 11.82
Number exercisable (in shares) | shares 187
Weighted average exercise price (in dollars per share) $ 11.85
$13.14 - $13.16  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Range of exercise, lower (in dollars per share) 13.14
Range of exercise, upper (in dollars per share) $ 13.16
Number outstanding (in shares) | shares 216
Weighted Average Remaining Contractual Life (in years) 3 years 3 months 39 days
Weighted average exercise price (in dollars per share) $ 13.15
Number exercisable (in shares) | shares 129
Weighted average exercise price (in dollars per share) $ 13.15
$13.75 - $13.75  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Range of exercise, lower (in dollars per share) 13.75
Range of exercise, upper (in dollars per share) $ 13.75
Number outstanding (in shares) | shares 638
Weighted Average Remaining Contractual Life (in years) 2 years 7 months 10 days
Weighted average exercise price (in dollars per share) $ 13.75
Number exercisable (in shares) | shares 511
Weighted average exercise price (in dollars per share) $ 13.75
$13.77 - 21.98  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Range of exercise, lower (in dollars per share) 13.77
Range of exercise, upper (in dollars per share) $ 21.98
Number outstanding (in shares) | shares 883
Weighted Average Remaining Contractual Life (in years) 5 years 2 months 9 days
Weighted average exercise price (in dollars per share) $ 16.76
Number exercisable (in shares) | shares 165
Weighted average exercise price (in dollars per share) $ 13.92