COMMITMENTS, CONTINGENCIES AND RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Credit Extensions
Loan commitments	$ 5,077,869	$ 3,370,271
Commercial letters of credit and SBLCs	1,525,613	1,293,547
Undisbursed Loan Commitments
Credit Extensions
Loan commitments expected to expire in 2017	2,220,000
Loan commitments expected to expire in 2018 through 2019	2,330,000
Loan commitments expected to expired in 2020 through 2021	463,900
Loan commitments expected to expire thereafter	63,600
Commercial and Standby Letters of Credit
Credit Extensions
Letters of credit expected to expire in 2017	404,200
Letters of credit expected to expire in 2018 through 2019	588,100
Letters of credit expected to expire in 2020 through 2021	325,100
Letters of credit expected to expire thereafter	208,200
Commercial Letters Of Credit
Credit Extensions
Commercial letters of credit and SBLCs	46,800
Standby Letters of Credit
Credit Extensions
Commercial letters of credit and SBLCs	1,480,000
Accrued Expenses and Other Liabilities
Credit Extensions
Allowance for unfunded credit reserves	$ 15,700	$ 19,800