Loans (Changes in the carrying amount and accretable yield for covered loans) (Details) - Covered impaired loan - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Accretable Yield
Balance at the beginning of the period, Accretable Yield	$ 37,511	$ 67,282
Accretable Yield, Accretion	(14,947)	(42,161)
(Disposals)/Additions, Accretable Yield	(4,474)	(4,451)
Balance at the end of the period, Accretable Yield	22,908	37,511
Carrying Amount of Loans
Balance at the beginning of the period, Carrying Amount of Loans	232,452	403,692
Accretion, Carrying Amount of Loans	14,947	42,161
Payments received, net, Carrying Amount of Loans	(116,751)	(213,401)
Balance at the end of the period, Carrying Amount of Loans	$ 130,648	$ 232,452