Derivative Financial Instruments Derivative Financial Instruments Narrative (Details) (USD $)	3 Months Ended				3 Months Ended	6 Months Ended
	Mar. 31, 2012 contracts	Jun. 30, 2011 contracts	Mar. 31, 2012 Minimum [Member]	Mar. 31, 2012 Maximum [Member]	Sep. 30, 2011 Euro Term Loan Interest Rate Swap [Member]	Jun. 30, 2011 Euro Term Loan Interest Rate Swap [Member]	Jun. 30, 2011	Jun. 30, 2011
Number of USD Term Loan Interest Rate Derivatives Expired		2
Pay fixed interest rate in interst rate swap						6.59%	2.11%	2.15%
Percentage rate above EURIBOR receive on interest rate swap						2.00%
Derivative, Description of Variable Rate Basis						Interbank Offered Rate (EURIBOR), plus 2%.
Notional amount of interest rate swaps							$ 100,000,000	$ 100,000,000
Number of foreign exchange forward contracts entered into YTD	145
Notional amount of foreign currency forward contracts			120,000	37,000,000
Cash Payment to Terminate Interest Rate Swap					$ 2,900,000