SECURITIES PURCHASED UNDER RESALE AGREEMENTS AND SOLD UNDER REPURCHASE AGREEMENTS (Details 3) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets
Gross Amounts of Recognized Assets	$ 2,100,000	$ 2,050,000
Gross Amounts Offset on the Consolidated Balance Sheets	(100,000)	(450,000)
Net Amounts of Assets Presented on the Consolidated Balance Sheets	2,000,000	1,600,000
Gross Amounts Not Offset on the Consolidated Balance Sheets
Financial Instruments	(150,000)	0
Collateral Received	(1,839,120)	(1,593,503)
Net Amount	10,880	6,497
Liabilities
Gross Amounts of Recognized Liabilities	450,000	450,000
Gross Amounts Offset on the Consolidated Balance Sheets	(100,000)	(450,000)
Net Amounts of Liabilities Presented on the Consolidated Balance Sheets	350,000	0
Gross Amounts Not Offset on the Consolidated Balance Sheets
Financial Instruments	(150,000)	0
Collateral Pledged	(200,000)	0
Net Amount	$ 0	$ 0