Covered Assets and Indemnification Asset - Covered OREO (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Activity in covered OREO
Balance, beginning of period	$ 99,090	$ 136,945
Additions to covered OREO	4,542	24,042
Dispositions of covered OREO	(14,977)	(22,334)
Valuation adjustments in the period	(9,765)	(950)
Balance, end of period	$ 78,890	$ 137,703