CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) (USD $) In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
LIABILITIES AND SHAREHOLDERS' EQUITY
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	100,000	100,000
Common stock, shares issued (in shares)	26,009	27,122
Common stock, shares outstanding (in shares)	22,769	22,705
Treasury stock, common shares held (in shares)	3,240	4,417