Accumulated Other Comprehensive Income (loss) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning Balance		$ 376			$ 376
Total other comprehensive (loss) income	$ (1,190)		$ 1,282		(764)	$ 2,860
Ending Balance	(388)				(388)
Accumulated Net Unrealized Investment Gain (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning Balance	808	359	(1,295)	$ (2,860)	359	(2,860)
Other comprehensive income before reclassification	(1,167)	449	1,269	1,692
Amount reclassified from accumulated other comprehensive loss				(127)
Total other comprehensive (loss) income	(1,167)	449	1,269	1,565
Ending Balance	(359)	808	(26)	(1,295)	(359)	(26)
Accumulated Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning Balance	(6)	17	(15)	(28)	17	(28)
Other comprehensive income before reclassification		(23)	13	13
Amount reclassified from accumulated other comprehensive loss	(23)
Total other comprehensive (loss) income	(23)	(23)	13	13
Ending Balance	$ (29)	$ (6)	$ (2)	$ (15)	$ (29)	$ (2)