LOANS (Details Textual) - USD ($)	9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans And Leases Receivable Gross Carrying Amount Non Covered Loans	$ 1,070,000,000
Covered Loans Acquired	62,300,000	$ 191,000,000	$ 137,500,000
Troubled debt restructurings, previous charge-offs	1,200,000	1,300,000	1,300,000
Allowance for loan losses allocated to troubled debt restructurings	2,800,000	183,000	2,700,000
Purchased Loan Pools	624,886,000	410,072,000	592,963,000
Mortgage Loans on Real Estate, Face Amount of Mortgages	614,400,000	402,100,000	580,700,000
Purchase Premium Paid At Acquisition	10,500,000	8,000,000	12,300,000
Residential mortgages on properties principal balances	614,400,000	402,100,000	580,700,000
Allowance for Loan and Lease Losses, Loans Acquired	2,000,000	402,000	581,000
Troubled Debt Restructurings Excluding Purchased Non-covered And Covered Loans	17,100,000	13,900,000	16,400,000
Loans and Leases Receivable, Allowance	22,963,000	22,471,000	21,062,000
Modified Loans Value	58,200,000	77,400,000
Purchased Non Covered Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	17,993,000	11,374,000	13,330,000
Troubled debt restructuring loans	9,294,000	7,188,000	9,373,000
Troubled debt restructurings, provision for loan loss expense	217,000	618,000
Loans and Leases Receivable, Allowance	1,067,090,000	767,494,000	771,554,000
Modified Loans Value	22,369,000	18,178,000	22,264,000
Non Accrual Purchased Loans Pools	864,000
Covered Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	5,834,000	33,084,000	13,238,000
Troubled debt restructurings, previous charge-offs	791,000	1,400,000	1,200,000
Troubled debt restructurings principal balances		1,300,000
Troubled debt restructuring loans	13,900,000	20,500,000	15,500,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	516,000
Modified Loans Value	5,732,000	25,708,000	13,821,000
Loans Excluding Purchased Non Covered And Covered Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	16,570,000	20,558,000	16,860,000
Troubled debt restructurings principal balances	2,900,000
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	793,000	2,600,000
Troubled debt restructuring loans	14,013,000	12,075,000	14,418,000
Financing Receivable, Modifications, Post-Modification Recorded Investment			4,300,000
Modified Loans Value	27,337,000	32,268,000	26,268,000
Purchased Non Covered Loans 1 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	10,400,000	7,700,000	10,000,000
Troubled debt restructurings, previous charge-offs	752,000	60,000	377,000
Troubled debt restructurings principal balances		4,100,000
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	1,300,000	2,400,000
Troubled debt restructuring loans	603,000	2,500,000
Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	$ 100,000
Minimum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan To Value Ratio	110.00%
Minimum [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	$ 100,000	200,000	200,000
Troubled debt restructuring loans	100,000	$ 100,000	$ 100,000
Minimum [Member] | Independent Third Party Loan Review [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount Of Loan Relationship With Risk Ratings Sample Reviewed Annually	250,000
Minimum [Member] | Internal Loan Review Department [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of Loan Relationship With Risk Ratings Reviewed Annually	$ 1,000,000