Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, liquidation preference	$ 50	$ 50
Preferred stock, shares issued	868,000	868,000
Preferred stock, shares outstanding	868,000	868,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized	100,000,000	100,000,000
Common stock, shares issued	54,632,000	54,629,000
Common stock, shares outstanding	54,461,000	54,191,000
Common stock in treasury, shares	254,000	519,000