Foreclosed Assets (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013 Asset	Mar. 31, 2012 Asset
Summary of the activity in the balance of foreclosed assets
Beginning balance, net	$ 7,498	$ 16,332
Additions/transfers from loans	5,736	1,919
Dispositions/sales	(7,083)	(3,379)
Valuation adjustments	(27)	(83)
Ending balance, net	6,124	14,789
Ending valuation allowance	1,472	(1,753)
Ending number of foreclosed assets	37	63
Proceeds from sale of foreclosed assets	7,635	3,021
Gain (loss) on sale of foreclosed assets	551	(358)
Non covered [Member]
Summary of the activity in the balance of foreclosed assets
Beginning balance, net	5,957	13,268
Additions/transfers from loans	5,473	1,694
Dispositions/sales	(6,816)	(3,379)
Valuation adjustments	(27)	(83)
Ending balance, net	4,587	11,500
Ending valuation allowance	984	(977)
Ending number of foreclosed assets	33	52
Proceeds from sale of foreclosed assets	7,354	3,021
Gain (loss) on sale of foreclosed assets	538	(358)
Covered [Member]
Summary of the activity in the balance of foreclosed assets
Beginning balance, net	1,541	3,064
Additions/transfers from loans	263	225
Dispositions/sales	(267)
Valuation adjustments
Ending balance, net	1,537	3,289
Ending valuation allowance	488	(776)
Ending number of foreclosed assets	4	11
Proceeds from sale of foreclosed assets	280
Gain (loss) on sale of foreclosed assets	$ 13