CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012
Statement of Financial Position [Abstract]
Allowance for Loan losses	$ 0	$ 0	$ 0
Allowance for loan losses	$ 0	$ 0	$ 0
Preferred stock, par value	$ 0.01	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000	5,000,000
Preferred stock, shares issued
Common stock, par value	$ 0.01	$ 0.01	$ 0.01
Common stock, shares authorized	300,000,000	300,000,000	300,000,000
Common stock, shares issued	37,068,904	37,068,904	37,068,904
Treasury stock, shares	13,706,781	13,744,395	12,934,377