INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, TAX CREDIT AND OTHER INVESTMENTS, NET (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, TAX CREDIT AND OTHER INVESTMENTS, NET
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	$ 179,657		$ 179,657		$ 193,978
Accrued expenses and other liabilities — Unfunded commitments	45,995		45,995		$ 61,525
Tax credits and other tax benefits recognized	8,518	$ 8,605	17,970	$ 17,380
Amortization expense included in income tax expense	$ 7,345	$ 6,152	$ 14,311	$ 12,396