Accumulated Other Comprehensive Loss - Schedule of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Increase (Decrease} In Accumulated Other Comprehensive Income (Loss), Net Of Tax1 [Roll Forward]
Total other comprehensive income (loss)	$ 540	$ (1,864)	$ 1,631	$ (1,503)
Net Unrealized Gain on Available for Sale Securities
Increase (Decrease} In Accumulated Other Comprehensive Income (Loss), Net Of Tax1 [Roll Forward]
Beginning balance	1,324	3,291	258	2,930
Other comprehensive income before reclassifications	835	(1,570)	2,189	(773)
Amounts reclassified from accumulated other comprehensive (loss) income	(321)	(347)	(609)	(783)
Total other comprehensive income (loss)	514	(1,917)	1,580	(1,556)
Ending balance	1,838	1,374	1,838	1,374
Defined Benefit Plan
Increase (Decrease} In Accumulated Other Comprehensive Income (Loss), Net Of Tax1 [Roll Forward]
Beginning balance	(4,032)	(4,597)	(4,057)	(4,597)
Other comprehensive income before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive (loss) income	26	53	51	53
Total other comprehensive income (loss)	26	53	51	53
Ending balance	(4,006)	(4,544)	(4,006)	(4,544)
AOCI Attributable to Parent
Increase (Decrease} In Accumulated Other Comprehensive Income (Loss), Net Of Tax1 [Roll Forward]
Beginning balance	(2,708)	(1,306)	(3,799)	(1,667)
Other comprehensive income before reclassifications	835	(1,570)	2,189	(773)
Amounts reclassified from accumulated other comprehensive (loss) income	(295)	(294)	(558)	(730)
Total other comprehensive income (loss)	540	(1,864)	1,631	(1,503)
Ending balance	$ (2,168)	$ (3,170)	$ (2,168)	$ (3,170)