BALANCE SHEET OFFSETTING (Details) - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
Offsetting Liabilities [Line Items]
Total		$ 17,318	$ 22,331
Derivative Asset, Collateral, Obligation to Return Cash, Offset		0	0
Derivative Asset		17,318	22,331
Derivative, Collateral, Obligation to Return Securities	[1]	5,383	4,222
Derivative, Collateral, Obligation to Return Cash		0	0
Derivative Asset, Fair Value, Amount Offset Against Collateral		11,935	18,109
Total		15,693	21,683
Derivative Liability, Collateral, Right to Reclaim Cash, Offset		0	0
Derivative Liability		15,693	21,683
Derivative, Collateral, Right to Reclaim Securities	[1]	5,383	4,222
Derivative, Collateral, Right to Reclaim Cash		3,939	11,846
Derivative Liability, Fair Value, Amount Offset Against Collateral		6,371	5,615
Interest Rate Swap [Member]
Offsetting Liabilities [Line Items]
Derivative Asset, Collateral, Obligation to Return Cash, Offset		0	0
Derivative Asset		1,880	1,364
Derivative, Collateral, Obligation to Return Securities	[1]	805	961
Derivative, Collateral, Obligation to Return Cash		0	0
Derivative Asset, Fair Value, Amount Offset Against Collateral		1,075	403
Total			740
Derivative Liability, Collateral, Right to Reclaim Cash, Offset		0	0
Derivative Liability		264	740
Derivative, Collateral, Right to Reclaim Securities	[1]	0	0
Derivative, Collateral, Right to Reclaim Cash		264	740
Derivative Liability, Fair Value, Amount Offset Against Collateral		0	0
Loan level swaps
Offsetting Liabilities [Line Items]
Total			18,629
Derivative Asset, Collateral, Obligation to Return Cash, Offset		0	0
Derivative Asset		14,236	18,629
Derivative, Collateral, Obligation to Return Securities	[1]	4,578	3,261
Derivative, Collateral, Obligation to Return Cash		0	0
Derivative Asset, Fair Value, Amount Offset Against Collateral		9,658	15,368
Total			18,632
Derivative Liability, Collateral, Right to Reclaim Cash, Offset		0	0
Derivative Liability		14,241	18,632
Derivative, Collateral, Right to Reclaim Securities	[1]	5,383	4,222
Derivative, Collateral, Right to Reclaim Cash		3,675	11,106
Derivative Liability, Fair Value, Amount Offset Against Collateral		5,183	3,304
Foreign Exchange Contract [Member]
Offsetting Liabilities [Line Items]
Total			2,338
Derivative Asset, Collateral, Obligation to Return Cash, Offset		0	0
Derivative Asset		1,202	2,338
Derivative, Collateral, Obligation to Return Securities	[1]	0	0
Derivative, Collateral, Obligation to Return Cash		0	0
Derivative Asset, Fair Value, Amount Offset Against Collateral		1,202	2,338
Total			2,311
Derivative Liability, Collateral, Right to Reclaim Cash, Offset		0	0
Derivative Liability		1,188	2,311
Derivative, Collateral, Right to Reclaim Securities	[1]	0	0
Derivative, Collateral, Right to Reclaim Cash		0	0
Derivative Liability, Fair Value, Amount Offset Against Collateral		1,188	2,311
Other Assets [Member]
Offsetting Liabilities [Line Items]
Total		17,476	22,761
Other Assets [Member] | Loan level swaps
Offsetting Liabilities [Line Items]
Total		14,236	18,629
Other Assets [Member] | Foreign Exchange Contract [Member]
Offsetting Liabilities [Line Items]
Total		1,202	2,338
Other Assets [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Offsetting Liabilities [Line Items]
Interest Rate Derivative Assets, at Fair Value		1,880	1,364
Other Liabilities [Member]
Offsetting Liabilities [Line Items]
Total		15,693	21,916
Other Liabilities [Member] | Loan level swaps
Offsetting Liabilities [Line Items]
Total		14,241	18,632
Other Liabilities [Member] | Foreign Exchange Contract [Member]
Offsetting Liabilities [Line Items]
Total		1,188	2,311
Other Liabilities [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Offsetting Liabilities [Line Items]
Interest rate derivatives		264	740
Customer Repurchase Agreements [Member]
Offsetting Liabilities [Line Items]
Securities Sold under Agreements to Repurchase, Gross Including Not Subject to Master Netting Arrangement		162,679	176,913
Securities Sold under Agreements to Repurchase, Asset		0	0
Securities Sold under Agreements to Repurchase		162,679	176,913
Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities	[1]	0	0
Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Cash		0	0
Securities Sold under Agreements to Repurchase, Fair Value of Collateral		$ 162,679	$ 176,913

[1] Reflects offsetting derivative positions with the same counterparty.