Borrowings (Details 2) (USD $)			1 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Jan. 31, 2014 New Credit Agreement	Sep. 30, 2014 New Credit Agreement
Credit Agreement
Current borrowing capacity			$ 150,000,000
Credit facility initial term			2 years
Maximum borrowing capacity including accordion expansion			225,000,000
Amount outstanding under Credit Agreement				0
Term loan	4,245,000
Obligations under capital leases	16,692,000
Total	$ 20,937,000	$ 30,332,000