Derivative Financial Instruments (Details) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Derivative Financial Instruments [Abstract]
Average notional amount	$ 8,819,000
Foreign Exchange Contract [Member] | Prepaid expenses and other assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets		307,000
Foreign Exchange Contract [Member] | Other accrued liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities	$ 129,000	$ 50,000