Condensed Consolidated Balance Sheets (unaudited) (Parentheticals) (USD $) In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Accounts receivable, allowance (in Dollars)	$ 351	$ 351
Preferred stock, par value (in Dollars per share)	$ 0.00015	$ 0.00015
Preferred stock, shares authorized	5,000	5,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in Dollars per share)	$ 0.00015	$ 0.00015
Common stock, shares authorized	70,000	70,000
Common stock, shares issued	34,290	34,027
Common stock, shares outstanding	29,503	29,226
Treasury stock shares	4,787	4,801