CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
ASSETS
Accounts receivable allowance	$ 1,296	$ 1,211
Stockholders' equity:
Preferred stock par value	$ 0.001	$ 0.001
Preferred stock shares authorized	10,000	10,000
Preferred stock shares issued	0	0
Preferred stock shares outstanding	0	0
Common stock par value	$ 0.001	$ 0.001
Common stock shares authorized	24,500	24,500
Common stock issued	10,831	10,152
Common stock outstanding	10,831	10,152