Consolidated Balance Sheets (unaudited) (Parenthetical) (USD $)	Mar. 31, 2012	Dec. 31, 2011
LIABILITIES AND STOCKHOLDERS' EQUITY
Common Stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common Stock, shares authorized (in shares)	100,000,000	100,000,000
Common Stock, shares issued (in shares)	31,452,888	31,441,138
Treasury stock, at cost (in shares)	1,836,809	1,866,258