Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net [Abstract]
Minimum compliance period for qualified affordable housing partnerships to fully utilize the tax credits (in years)			15 years
Investments in qualified affordable housing partnerships, net	$ 169,103		$ 169,103		$ 183,917
Accrued expenses and other liabilities — Unfunded commitments	51,412		51,412		$ 57,243
Tax credits and other tax benefits recognized	9,566	$ 8,518	19,187	$ 17,970
Amortization expense included in income tax expense	$ 7,051	$ 7,345	$ 14,001	$ 14,311