Condensed Consolidated Balance Sheets Parenthetical - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Allowances	$ 1,224	$ 1,240
Preferred Stock, Par Value (in dollars per share)	$ 0.001	$ 0.001
Preferred Stock, Shares, Authorized	5,000,000	5,000,000
Common Stock, Par Value (in dollars per share)	$ 0.001	$ 0.001
Common Stock, Shares, Authorized	100,000,000	100,000,000
Common Stock, Shares, Issued	45,010,000	44,739,000
Common Stock, Shares, Outstanding	35,865,000	35,594,000
Treasury Stock, Shares	9,145,000	9,145,000