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Stockholders' Equity and Stock-Based Compensation - Option Plans (Details) - shares
Dec. 31, 2016
May 24, 2013
2005 Equity Incentive Plan [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares Authorized 7,292,594 2,600,000
2002 Non-statutory Stock Option Plan [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares Authorized 1,200,000  
2000 Employee Stock Option Plan [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares Authorized 2,450,000  
2000 Director Stock Option Plan [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares Authorized 250,000  
Accent Optical Technologies, Inc. Stock Incentive Plan [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares Authorized 205,003