Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Assets:
Cash Equivalents	$ 18,678	$ 13,619
Foreign Currency Derivative Instruments Not Designated As Hedging Instruments Asset At Fair Value	357	545
Liabilities:
Foreign Currency Derivative Instruments Not Designated As Hedging Instruments Liability At Fair Value	501	480
Total Liabilities at Fair Value	10,051	9,655
Fair Value, Measurements, Recurring [Member]
Assets:
Cash Equivalents	18,678	13,619
Foreign Currency Derivative Instruments Not Designated As Hedging Instruments Asset At Fair Value	357	545
Total Assets at Fair Value	19,035	14,164
Liabilities:
Interest Rate Cash Flow Hedge Liability at Fair Value	8,950	9,175
Foreign Currency Cash Flow Hedge Liability at Fair Value	600	0
Foreign Currency Derivative Instruments Not Designated As Hedging Instruments Liability At Fair Value	501	480
Total Liabilities at Fair Value	10,051	9,655
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Assets:
Cash Equivalents	0	0
Foreign Currency Derivative Instruments Not Designated As Hedging Instruments Asset At Fair Value	0	0
Total Assets at Fair Value	0	0
Liabilities:
Interest Rate Cash Flow Hedge Liability at Fair Value	0	0
Foreign Currency Cash Flow Hedge Liability at Fair Value	0	0
Foreign Currency Derivative Instruments Not Designated As Hedging Instruments Liability At Fair Value	0	0
Total Liabilities at Fair Value	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Assets:
Cash Equivalents	18,678	13,619
Foreign Currency Derivative Instruments Not Designated As Hedging Instruments Asset At Fair Value	357	545
Total Assets at Fair Value	19,035	14,164
Liabilities:
Interest Rate Cash Flow Hedge Liability at Fair Value	8,950	9,175
Foreign Currency Cash Flow Hedge Liability at Fair Value	600	0
Foreign Currency Derivative Instruments Not Designated As Hedging Instruments Liability At Fair Value	501	480
Total Liabilities at Fair Value	10,051	9,655
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Assets:
Cash Equivalents	0	0
Foreign Currency Derivative Instruments Not Designated As Hedging Instruments Asset At Fair Value	0	0
Total Assets at Fair Value	0	0
Liabilities:
Interest Rate Cash Flow Hedge Liability at Fair Value	0	0
Foreign Currency Cash Flow Hedge Liability at Fair Value	0	0
Foreign Currency Derivative Instruments Not Designated As Hedging Instruments Liability At Fair Value	0	0
Total Liabilities at Fair Value	$ 0	$ 0