Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	$ (1,722)	$ 4,721
Before reclassifications	2,557	(5,500)
Reclassifications	3	(459)
Balance at end of period	838	(1,238)
Unrealized Gains and Losses on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	(1,641)	4,875
Before reclassifications	2,554	(5,518)
Reclassifications	3	(459)
Balance at end of period	916	(1,102)
Changes in Pension Plan Assets and Benefit Obligations [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	(81)	(154)
Before reclassifications	3	18
Reclassifications	0	0
Balance at end of period	$ (78)	$ (136)