Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $) In Millions, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Allowance for doubtful accounts receivable (in Dollars)	$ 3.8	$ 3.7
Common stock, shares authorized	40,000,000	40,000,000
Common stock, par value (in Dollars per share)	$ 0.001	$ 0.001
Common stock, shares issued	13,988,726	13,785,947
Common stock, shares outstanding	13,988,726	13,785,947
Treasury shares, shares	949,961	928,478