Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	$ 785	$ (1,722)
Before reclassifications	(91)	2,557
Reclassifications	(219)	3
Balance at end of period	475	838
Unrealized Gains and Losses on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	1,126	(1,641)
Before reclassifications	(149)	2,554
Reclassifications	(219)	3
Balance at end of period	758	916
Changes in Pension Plan Assets and Benefit Obligations [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	(341)	(81)
Before reclassifications	58	3
Reclassifications	0	0
Balance at end of period	$ (283)	$ (78)