Retirement Plans (Tables)

12 Months Ended

Dec. 31, 2011

Retirement Plans (Tables) [Abstract]

Funded status and accrued pension cost

	2011			2010
CHANGE IN BENEFIT OBLIGATION:
Benefit obligation at beginning of year	$	80,278		$	74,882
Interest cost		4,151			4,229
Actuarial loss		13,402			4,740
Benefits paid		(5,256	)		(3,573	)
Benefit obligation at end of year		92,575			80,278
CHANGE IN PLAN ASSETS:
Fair value of plan assets at beginning of year		66,687			60,088
Actual return on plan assets		(1,692	)		6,387
Employer contributions		2,526			3,785
Benefits paid		(5,256	)		(3,573	)
Fair value of plan assets at end of year		62,265			66,687
Funded status and accrued pension cost	$	(30,310	)	$	(13,591	)

Net periodic pension expense

	2011			2010			2009
Interest cost	$	4,151		$	4,229		$	4,337
Expected return on plan assets		(5,280	)		(4,783	)		(3,844	)
Recognized net actuarial loss		2,404			2,283			3,476
Total net periodic pension expense	$	1,275		$	1,729		$	3,969

Weighted average assumptions used in benefit obligation

	2011			2010			2009
Discount rate		4.13	%		5.28	%		5.84	%
Rate of compensation increase		N/A			N/A			N/A
Measurement date		12/31/2011			12/31/2010			12/31/2009

Weighted average assumptions used in determining net periodic pension expense

	2011			2010			2009
Discount rate		5.28	%		5.84	%		6.30	%
Rate of compensation increase		N/A			N/A			N/A
Expected long-term rate of return on plan assets		8.00	%		8.00	%		8.00	%
Measurement date		12/31/2011			12/31/2010			12/31/2009

Allocation of defined benefit pension plans asset by asset class

Asset Class	2011		2010
Cash	$	1,715	$	2,508
Equity securities
U.S. Large Cap (a)		18,584		19,401
U.S. Mid Cap (a)		6,915		7,395
International (b)		6,929		7,796
Core fixed income (c)		21,466		23,016
High-yield fixed income (d)		6,656		6,571
Total	$	62,265	$	66,687

Expected future benefit payments

2012	$	3,928
2013		3,275
2014		4,012
2015		4,736
2016		4,063
2017 - 2021		28,954