Debt (Details) (USD $)	0 Months Ended	1 Months Ended	9 Months Ended
	May 18, 2012	Jun. 30, 2012	Sep. 30, 2012
Line of Credit Facility [Line Items]
Line of Credit Facility, Amount Outstanding			$ 0
Debt Instrument, Interest Rate at Period End			4.00%
Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity		200,000,000
Consolidated fixed charge coverage ratio	1.20	1
Debt issuance costs capitalized			2,600,000
Revolving Credit Facility | Eurodollar Rate | From May 18, 2012 to August 15, 2012
Line of Credit Facility [Line Items]
Basis spread on variable rate		2.00%
Revolving Credit Facility | Base Rate | From May 18, 2012 to August 15, 2012
Line of Credit Facility [Line Items]
Basis spread on variable rate		1.00%
Revolving Credit Facility | Applicable Rate | After August 15, 2012
Line of Credit Facility [Line Items]
Reduction in Basis Points from Credit Agreement Due to Average Daily Availability			1.25%
Domestic Line of Credit | United States
Line of Credit Facility [Line Items]
Maximum borrowing capacity		150,000,000
Current borrowing capacity			102,200,000
Covenant liquidity requirement		30,000,000
Foreign Line of Credit | Europe
Line of Credit Facility [Line Items]
Maximum borrowing capacity		50,000,000
Current borrowing capacity			$ 15,200,000