Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	3,400	3,400
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	90,000,000	90,000,000
Common stock, shares issued (in shares)	37,665,000	31,557,000
Treasury stock, shares	1,802,000	1,802,000
Variable Interest Entity, Consolidated, Carrying Amount, Assets	$ 55,909	$ 56,326
Variable Interest Entities, Consolidated, Debt	$ 45,723	$ 45,900