Pension and Other Employee Benefit Plans (Components of Net Periodic Benefit Costs) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Compensation and Retirement Disclosure [Abstract]
Interest cost	$ 102	$ 112	$ 204	$ 224
Expected return on plan assets	(132)	(141)	(263)	(282)
Amortization of prior service costs	0	(6)	0	(12)
Recognized actuarial loss	534	246	1,068	492
Net pension cost	$ 504	$ 211	$ 1,009	$ 422