Condensed Consolidated Balance Sheets (unaudited) (Parentheticals) (USD $) In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Accounts receivable, allowance (in Dollars)	$ 269	$ 351
Preferred stock, par value (in Dollars per share)	$ 0.00015	$ 0.00015
Preferred stock, shares authorized (in Shares)	5,000	5,000
Preferred stock, shares issued (in Shares)	0	0
Preferred stock, shares outstanding (in Shares)	0	0
Common stock, par value (in Dollars per share)	$ 0.00015	$ 0.00015
Common stock, shares authorized (in Shares)	70,000	70,000
Common stock, shares issued (in Shares)	34,630	34,027
Common stock, shares outstanding (in Shares)	29,822	29,226
Treasury stock shares (in Shares)	4,808	4,801