Employee Benefit Plans (Details) (USD $)	9 Months Ended
	Sep. 30, 2011
Change in Plan Assets [Roll Forward]
Discount rate	5.40%
Expected long-term return on plan assets	6.60%
Employee Benefit Plans Additional Information [Abstract]
Net period benefit costs	$ 0
Deferred Compensation Plan Assets	4,000,000
Pension Plans, Defined Benefit [Member]
Change in Benefit Obligation [Roll Forward]
Benefit obligation - beginning	118,505,000
Service cost	242,000
Interest cost	4,613,000
Actuarial gain	(7,696,000)
Benefits paid	(2,943,000)
Currency changes	(388,000)
Benefit obligation - ending	112,333,000
Change in Plan Assets [Roll Forward]
Fair value of plan assets - beginning	93,642,000
Actual return	(2,136,000)
Employer contribution	1,534,000
Benefits paid	(2,943,000)
Currency changes	(343,000)
Fair value of plan assets - ending	89,754,000
Funded status	(22,579,000)
Weighted average discount rate benefit obligations	5.10%
Estimated Future Pension Benefit Payments [Abstract]
For the first year	1,600,000
For the second year	1,600,000
Foreign Currency Exchange Rate Translation	$ 62.5