OTHER COMPREHENSIVE INCOME (LOSS), Before and After Tax Amounts by Component (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Other Comprehensive Income (Loss) [Abstract]
Change in net unrealized gain during the period, tax expense (benefit)	$ 21	$ (2)	$ 28	$ 15
Change in net unrealized gain during the period, after tax amount	26	(4)	34	20
Reclassification adjustment for net gains included in net gain on securities and other assets, tax expense (benefit)		2		(624)
Reclassification adjustment for net gains included in net gain on securities and other assets, after tax amount	0	(2)	0	760
Total defined benefit plans, tax expense (benefit)	191	210	382	(58)
Change in unrealized loss on derivative liability, tax expense (benefit)	(431)		(431)
Change in unrealized loss on derivative liability, after tax amount	(526)	0	(526)	0
Total other comprehensive income (loss), pre tax amount	(463)	450	(4)	(1,460)
Total other comprehensive income (loss), tax expense (benefit)	(209)	202	2	(658)
Total other comprehensive income (loss), after tax amount	(254)	248	(2)	(802)
Derivatives Liabilities [Member]
Other Comprehensive Income (Loss) [Abstract]
Change in unrealized loss on derivative liability, pre-tax amount	(957)		(957)
Change in unrealized loss on derivative liability, tax expense (benefit)	(431)		(431)
Change in unrealized loss on derivative liability, after tax amount	(526)		(526)
Total derivatives, pre-tax amount	(957)		(957)
Total derivatives, tax expense (benefit)	(431)		(431)
Total derivatives, after tax amount	(526)		(526)
Securities Held-to-Maturity and Transferred Securities [Member]
Other Comprehensive Income (Loss) [Abstract]
Change in non-credit component of OTTI, pre-tax amount	8	(35)	16	(27)
Change in non-credit component of OTTI, tax expense (benefit)	4	(16)	8	(12)
Change in non-credit component of OTTI, after tax amount	4	(19)	8	(15)
Change in unrealized loss on securities transferred to held-to-maturity, pre-tax amount	14	22	25	46
Change in unrealized loss on securities transferred to held-to-maturity, tax expense (benefit)	6	10	11	21
Change in unrealized loss on securities transferred to held-to-maturity, after tax amount	8	12	14	25
Total securities held-to-maturity and transferred securities, pre-tax amount	22	(13)	41	19
Total securities held-to-maturity and transferred securities, tax expense (benefit)	10	(6)	19	9
Total securities held-to-maturity and transferred securities, after tax amount	12	(7)	22	10
Securities Available-for-Sale [Member]
Other Comprehensive Income (Loss) [Abstract]
Change in net unrealized gain during the period, pre-tax amount	47	(8)	62	35
Change in net unrealized gain during the period, tax expense (benefit)	21	(4)	28	15
Change in net unrealized gain during the period, after tax amount	26	(4)	34	20
Total securities available-for-sale, pre-tax amount	47	(4)	62	(1,349)
Total securities available-for-sale, tax expense (benefit)	21	(2)	28	(609)
Total securities available-for-sale, after tax amount	26	(2)	34	(740)
Defined Benefit Plans [Member]
Other Comprehensive Income (Loss) [Abstract]
Change in the net actuarial gain or loss, pre-tax amount				(1,064)
Change in the net actuarial gain or loss, tax expense (benefit)				(478)
Change in the net actuarial gain or loss, after tax amount				(586)
Total defined benefit plans, pre-tax amount	425	467	850	(130)
Total defined benefit plans, tax expense (benefit)	191	210	382	(58)
Total defined benefit plans, after tax amount	234	257	468	(72)
Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member] | Securities Available-for-Sale [Member]
Other Comprehensive Income (Loss) [Abstract]
Reclassification adjustment for net gains included in net gain on securities and other assets, pre-tax amount		4		(1,384)
Reclassification adjustment for net gains included in net gain on securities and other assets, tax expense (benefit)		2		(624)
Reclassification adjustment for net gains included in net gain on securities and other assets, after tax amount		2		(760)
Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member] | Defined Benefit Plans [Member]
Other Comprehensive Income (Loss) [Abstract]
Reclassification adjustment for expense included in salaries and employee benefits expense, pre-tax amount	425	467	850	934
Reclassification adjustment for expense included in salaries and employee benefits expense, tax expense (benefit)	191	210	382	420
Reclassification adjustment for expense included in salaries and employee benefits expense, after tax amount	$ 234	$ 257	$ 468	$ 514