Condensed Consolidated Balance Sheets (in thousands, except for share amounts) (Parentheticals) (USD $) In Thousands, except Share data	Jun. 30, 2011	Dec. 31, 2010
Allowance for obsolescence (in Dollars)	$ 260	$ 170
Common stock, par value (in Dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	21,542,685	21,455,634
Common stock, shares outstanding	19,051,260	19,005,821
Treasury stock, shares	2,491,425	2,449,813