Employee Benefit Plans (Net Periodic Benefit Costs) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Employee Benefit Plans [Abstract]
Interest cost	$ 478	$ 473	$ 482
Expected return on plan assets	(600)	(642)	(600)
Service costs	48	50	54
Net loss amortization	326	252	242
Net periodic pension cost	252	133	178
Net loss (gain)	1,016	861	(23)
Net loss amortization	(326)	(252)	(242)
Total recognized in other comprehensive income	690	609	(265)
Total recognized in net periodic pension cost and other comprehensive income	$ 942	$ 742	$ (87)