Acquisition (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended			3 Months Ended	5 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Revolving credit facility Senior credit facilities	Sep. 30, 2013 Trynex	Sep. 30, 2013 Trynex	Sep. 30, 2013 Trynex	May 06, 2013 Trynex	May 06, 2013 Trynex Maximum	May 06, 2013 Trynex Revolving credit facility Senior credit facilities
Acquisition
Total consideration paid									$ 26,734
Borrowings under senior credit facility					80,000						28,000
Transaction expenses related to acquisition									1,180
Contingent consideration in the form of an earnout capped										7,000
Fair value of the contingent consideration recognized						3,587
Allocation of the purchase price paid to the fair value of the net assets for acquisition
Accounts receivable									604
Inventories									4,130
Other current assets									29
Property and equipment									5,272
Goodwill									5,722
Intangible assets									12,960
Accounts payable and other liabilities									(1,983)
Total									26,734
Amortization of goodwill for income tax purposes								15 years
Revenues	52,026	37,774	121,323	111,833			5,072
Pre-tax operating losses	694	3,091	4,412	10,576			(4,596)
Purchase accounting expenses							$ 4,369