Accumulated Other Comprehensive Loss - Schedule of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Increase (Decrease} In Accumulated Other Comprehensive Income (Loss), Net Of Tax1 [Roll Forward]
Other comprehensive income before reclassifications	$ (182)	$ 391	$ 2,007	$ (381)
Amounts reclassified from accumulated other comprehensive (loss) income	(141)	(321)	(699)	(1,052)
Total other comprehensive income (loss)	(323)	70	1,308	(1,433)
Net Unrealized Gain on Available for Sale Securities
Increase (Decrease} In Accumulated Other Comprehensive Income (Loss), Net Of Tax1 [Roll Forward]
Beginning balance	1,838	1,374	258	2,930
Other comprehensive income before reclassifications	(182)	391	2,007	(381)
Amounts reclassified from accumulated other comprehensive (loss) income	(167)	(347)	(776)	(1,131)
Total other comprehensive income (loss)	(349)	44	1,231	(1,512)
Ending balance	1,489	1,418	1,489	1,418
Defined Benefit Plan
Increase (Decrease} In Accumulated Other Comprehensive Income (Loss), Net Of Tax1 [Roll Forward]
Beginning balance	(4,006)	(4,544)	(4,057)	(4,597)
Other comprehensive income before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive (loss) income	26	26	77	79
Total other comprehensive income (loss)	26	26	77	79
Ending balance	(3,980)	(4,518)	(3,980)	(4,518)
AOCI Attributable to Parent
Increase (Decrease} In Accumulated Other Comprehensive Income (Loss), Net Of Tax1 [Roll Forward]
Beginning balance	(2,168)	(3,170)	(3,799)	(1,667)
Total other comprehensive income (loss)			1,308	(1,433)
Ending balance	$ (2,491)	$ (3,100)	$ (2,491)	$ (3,100)