Consolidated Balance Sheets (Parenthetical) (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Consolidated Balance Sheets [Abstract]
Preferred stock, Par value	$ 0.01	$ 0.01
Preferred stock, Shares Authorized	500	500
Preferred stock, Shares issued
Preferred stock, Shares outstanding
Common stock, Par value	$ 0.01	$ 0.01
Common stock, Shares Authorized	125,000	125,000
Common stock, Shares Issued	31,338	30,962
Common stock, Shares Outstanding	22,303	22,747
Treasury stock, Shares	9,035	8,215