CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013		Dec. 31, 2012
Statement of Financial Position [Abstract]
Accounts Receivable, allowances	$ 1,473		$ 1,467
Preferred stock, par value	$ 0.001		$ 0.001
Preferred stock, shares authorized	5,000,000		5,000,000
Preferred stock, shares issued	0		0
Preferred stock, shares outstanding	0		0
Common stock, par value	$ 0.01		$ 0.01
Common stock, shares authorized	100,000,000		100,000,000
Common stock, shares issued	26,774,156		25,853,425
Common stock, shares outstanding	26,774,156	[1]	25,853,425

[1] Amounts may not add due to rounding