Employee Benefits (Tables)

12 Months Ended

Dec. 31, 2012

Compensation and Retirement Disclosure [Abstract]

Change in benefit obligation, plan assets funded status and net periodic pension cost (benefit) [Table Text Block]

The following table presents information regarding this plan (dollars in thousands):

	December 31,
	2012			2011
Change in projected benefit obligation:
Projected benefit obligation at beginning of year	$	50,213		$	48,373
Interest cost	1,925			2,157
Actuarial loss	2,786			2,461
Benefits paid	(2,194		)	(2,778		)
Plan amendments	$	(4,702	)	—
Projected benefit obligation at end of year1,2	$	48,028		$	50,213
Change in plan assets:
Plan assets at fair value at beginning of year	$	43,859		$	44,477
Actual return on plan assets	4,255			2,160
Benefits paid	(2,194		)	(2,778		)
Plan assets at fair value at end of year	$	45,920		$	43,859
Funded status of the plan	$	(2,108	)	$	(6,354	)
Components of net periodic benefit costs:
Interest cost	$	1,925		$	2,157
Expected return on plan assets	(2,062		)	(1,957		)
Amortization of unrecognized net loss	3,461			3,659
Net periodic pension cost	$	3,324		$	3,859

¹  Projected benefit obligation equals accumulated benefit obligation.

²  Projected benefit obligation is based on January 1 measurement date.

Valuation assumptions used [Table Text Block]

Weighted-average assumptions as of December 31:	2012		2011
Discount rate	3.36	%	4.11	%
Expected return on plan assets	5.25	%	5.25	%

Expected future benefit payments [Table Text Block]

As of December 31, 2012, expected future benefit payments related to the Pension Plan were as follows (in thousands):

2013	$	3,629
2014	3,298
2015	3,372
2016	3,771
2017	3,488
Thereafter	16,227
	$	33,785