Covered Assets and Indemnification Asset - FDIC Indemnification Asset (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Activity in the FDIC Indemnification Asset
Balance, beginning of period	$ 91,648	$ 130,437
FDIC Indemnification Asset accretion (amortization)	87	506
Transfers to due from FDIC and other	(11,213)	(23,376)
Balance, end of period	80,522	$ 107,567
FDIC, collections received	$ 111,500