Comprehensive Income (Details) - Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
COMPREHENSIVE INCOME (Details) - Comprehensive Income (Loss) [Line Items]
OTTI losses Tax benefit (expense)			$ 178
Sale of investment securities available-for-sale Net investment securities gains	$ (2,991)	$ 6,966	(8,741)
Sale of investment securities available-for-sale Tax benefit (expense)	(1,196)	2,635	(3,578)
Total reclassification Net of tax	$ (3,595)	1,530	(7,607)
Reclassification out of Accumulated Other Comprehensive Income [Member]
COMPREHENSIVE INCOME (Details) - Comprehensive Income (Loss) [Line Items]
OTTI losses Net investment securities gains			652
OTTI losses Tax benefit (expense)			178
OTTI losses Net of tax			(474)
Sale of investment securities available-for-sale Net investment securities gains	$ 3,931	2,818	2,363
Sale of investment securities available-for-sale Tax benefit (expense)	(1,564)	(986)	(645)
Sale of investment securities available-for-sale Net of tax	2,367	1,832	1,718
Amortization of unrealized holding (losses) gains on securities transferred from available-for-sale to held-to-maturity Interest income	(220)	(215)	58
Amortization of unrealized holding (losses) gains on securities transferred from available-for-sale to held-to-maturity Tax benefit (expense)	90	91	(19)
Amortization of unrealized holding (losses) gains on securities transferred from available-for-sale to held-to-maturity Net of tax	(130)	(124)	39
Amortization of net pension actuarial losses	(443)	204	(654)
Pension plan actuarial losses Tax benefit (expense)	177	(83)	267
Pension plan actuarial losses Net of tax	(256)	121	(387)
Total reclassification Net of tax	$ 1,981	$ 1,587	$ 896