DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details Textual) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2010
Interest Rate Cash Flow Hedge Liability at Fair Value	$ 978,000				$ 1,439,000				$ 978,000	$ 1,439,000
Interest Rate Swap Maturity Date									September 2020
Interest Expense	5,677,000	$ 5,143,000	$ 4,751,000	$ 4,123,000	3,983,000	$ 3,796,000	$ 3,541,000	$ 3,536,000	$ 19,694,000	14,856,000	$ 14,680,000
Mortgages [Member]
Derivative Asset	4,300,000				2,700,000				4,300,000	2,700,000
Derivative Liability	0				137,000				0	137,000
Interest Rate Lock Commitments [Member] | Mortgages [Member]
Derivative Asset	$ 91,400,000				77,700,000				$ 91,400,000	77,700,000
Interest Rate Swap [Member]
Derivative Liability, Notional Amount												$ 37,100,000
Derivative, Fixed Interest Rate	4.11%								4.11%
Derivative Variable Interest Rate Description									90-day LIBOR rate plus 1.63%
Interest Expense									$ 678,000	822,000	$ 845,000
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net									492,000
Forward Contracts Related to Mortgage Loans Held for Sale [Member] | Mortgages [Member]
Derivative Asset	$ 150,000,000				$ 123,500,000				$ 150,000,000	$ 123,500,000