Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation Plans and Awards (Narrative) (Details)

v3.2.0.727
Stock-based Compensation Plans and Awards (Narrative) (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 10, 2015
Jun. 30, 2015
Jan. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of equity incentive shares authorized   14,410,000  
Stock options [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Options exercised on a cashless basis   535,404  
Shares withheld to cover amount of cashless exercise   243,647  
Unrecognized compensation cost   $ 5,386  
Unrecognized compensation cost, period for recognition   3 years 1 month 2 days  
Equity Incentive Plan 2014 [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of equity incentive shares authorized   26,000,000 14,410,000
Conversion of prior plan shares   7,602,408  
Vesting period   4 years  
Additional shares authorized for grant 11,590,000    
Total shares available   11,767,633  
Minimum [Member] | Equity Incentive Plan 2014 [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of fair market value   100.00%  
Minimum [Member] | Stockholders [Member] | Equity Incentive Plan 2014 [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of fair market value   110.00%  
Maximum [Member] | Equity Incentive Plan 2014 [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expiration period   10 years  
Maximum [Member] | Stockholders [Member] | Equity Incentive Plan 2014 [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expiration period   5 years