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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
CURRENT ASSETS:    
Trade receivables, allowances $ 1,587 $ 1,297
STOCKHOLDERS’ EQUITY:    
Preferred stock shares authorized (in shares) 5,000,000 5,000,000
Preferred stock shares issued (in shares) 0 0
Common stock par value (in USD per share)
Common stock shares authorized (in shares) 100,000,000 100,000,000
Common stock shares issued (in shares) 44,645,000 44,267,000
Common stock shares outstanding (in shares) 44,645,000 44,267,000
Developed technology    
OTHER ASSETS:    
Intangibles, accumulated amortization $ 52,843 $ 38,497
Other    
OTHER ASSETS:    
Intangibles, accumulated amortization $ 30,048 $ 26,603