CONSOLIDATED BALANCE SHEETS CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
CURRENT ASSETS:
Trade receivables, allowances (in usd)	$ 920	$ 840
STOCKHOLDERS’ EQUITY:
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Common Stock, Par or Stated Value Per Share
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	43,239,000	42,846,000
Other
OTHER ASSETS:
Intangibles, accumulated amortization (in usd)	21,361	18,870
Developed technology
OTHER ASSETS:
Intangibles, accumulated amortization (in usd)	$ 25,409	$ 17,602