Debt (Schedule Of Debt And Capital Lease Obligations) (Details) In Thousands, unless otherwise specified	0 Months Ended			9 Months Ended				9 Months Ended				9 Months Ended
	May 02, 2011 USD ($)	Sep. 30, 2011 USD ($)	Dec. 31, 2010 USD ($)	Sep. 30, 2011 Credit Line, Due 2013 [Member] USD ($)		Dec. 31, 2010 Credit Line, Due 2013 [Member] USD ($)		Sep. 30, 2011 Term Loan, Denominated In U.S. Dollars, Due 2013 [Member] USD ($)		Dec. 31, 2010 Term Loan, Denominated In U.S. Dollars, Due 2013 [Member] USD ($)		Sep. 30, 2011 Term Loan, Denominated In Euros ("EUR"), Due 2013 [Member] USD ($)		Dec. 31, 2010 Term Loan, Denominated In Euros ("EUR"), Due 2013 [Member] USD ($)		Sep. 30, 2011 Senior Subordinated Notes at 8%, Due 2013 [Member]	Dec. 31, 2010 Senior Subordinated Notes at 8%, Due 2013 [Member] USD ($)		Sep. 30, 2011 Secured Mortgages [Member] USD ($)		Sep. 30, 2011 Secured Mortgages [Member] EUR (€)		Dec. 31, 2010 Secured Mortgages [Member] USD ($)		Sep. 30, 2011 Capitalized Leases And Other Long-Term Debt [Member] USD ($)	Dec. 31, 2010 Capitalized Leases And Other Long-Term Debt [Member] USD ($)
Debt Instrument [Line Items]
Short-term debt		$ 2,667	$ 7,440
Total long-term debt, including current maturities	125,000	254,470	280,470	119,000	[1]		[1]	64,615	[2]	75,000	[2]	56,283	[3]	65,250	[3]		125,000	[4]	7,027	[5]	5,249	[5]	7,322	[5]	7,545	7,898
Current maturities of long-term debt		35,873	29,788
Total long-term debt, less current maturities		218,597	250,682
Applicable rate from interest rate of loan varying with prime, federal funds and/or LIBOR				1.50%				1.80%				2.80%
Average interest rate of loan with prime, federal funds and/or LIBOR				1.90%				2.20%				3.00%
Interest rate on Senior Subordinated Notes	8.00%															8.00%
Debt maturity date				2013				2013				2013				2013
Wrote off of unamortized debt issue cost	$ 834

[1] The loans under this facility may be denominated in USD or several foreign currencies. The interest rates under the facility are based on prime and/or LIBOR for the applicable currency. At September 30, 2011, the applicable rate was 1.5% and averaged 1.9% for the nine-month period ended September 30, 2011.

[2] The interest rate for this loan varies with prime and/or LIBOR. At September 30, 2011, the applicable rate was 1.8% and averaged 2.2% for the nine-month period ended September 30, 2011.

[3] The interest rate for this loan varies with Euro LIBOR. At September 30, 2011, this rate was 2.8% and averaged 3.0% for the nine-month period ended September 30, 2011.

[4] On May 2, 2011, the Company redeemed all $125.0 million in aggregate principal amount outstanding of its Senior Subordinated Notes at 8%, plus accrued and unpaid interest. As a result, the Company wrote off $834 of unamortized debt issue cost.

[5] This amount consists of two fixed-rate commercial loans with an outstanding balance of €5,249 at September 30, 2011. The loans are secured by the Company's facility in Bad Neustadt, Germany.