INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, TAX CREDIT AND OTHER INVESTMENTS, NET (Details 2) - 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
Investments in tax credit and other investments, net	$ 177,900		$ 177,900		$ 187,200
Total unfunded commitments for investments in tax credit and other investments	102,900		102,900		$ 113,200
Noninterest expense — amortization of tax credit and other investments	$ 14,006	$ 2,997	$ 28,161	$ 9,296