Long-Term Debt (Details Textual) (USD $)	2 Months Ended	12 Months Ended					2 Months Ended
	Sep. 30, 2012	Dec. 31, 2012	Aug. 03, 2012	Dec. 31, 2011	Aug. 31, 2011	May 31, 2011	Sep. 30, 2012 Minimum	Sep. 30, 2012 Maximum	Dec. 31, 2012 Revolving credit facility	Aug. 31, 2011 Revolving credit facility	May 31, 2011 Revolving credit facility	May 18, 2010 Revolving credit facility
Line of Credit Facility [Line Items]
Revolving credit facility										$ 100,000,000	$ 55,000,000	$ 55,000,000
Increased revolving credit facility			125,000,000
Base Rate applicable margin range							1.50%	2.80%
Issuance in letters of credit									25,000,000
Total availability under revolving credit facility									117,200,000
Long-term debt		144,500,000		122,500,000
Term loan			170,000,000		140,000,000	30,000,000
Credit agreement date	Aug. 03, 2012
Loan installments	4,300,000
Borrowing base percentage against receivables		85.00%
Euro currency rate applicable margin range, Minimum	2.00%
Euro currency Rate applicable margin range, Maximum	3.80%
Outstanding letters of credit		$ 7,800,000
Average interest rate on credit agreement		3.20%