CONSOLIDATED BALANCE SHEETS CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
CURRENT ASSETS:
Trade receivables, allowances (in dollars)	$ 892	$ 464
STOCKHOLDERS’ EQUITY:
Preferred stock, shares authorized	5,000	5,000
Preferred stock, shares issued	0	0
Common stock, shares authorized	100,000	100,000
Common stock, shares issued	42,489	42,008
Other [Member]
OTHER ASSETS:
Intangibles, accumulated amortization (in dollars)	14,034	10,215
Developed technology [Member]
OTHER ASSETS:
Intangibles, accumulated amortization (in dollars)	$ 8,146	$ 4,759