Supplemental Cash Flow Information (Details Textual) (USD $)	1 Months Ended
	May 31, 2013	Dec. 31, 2014
Supplemental Cash Flow Information [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 120,000,000
Revolving Credit Facility [Member]
Supplemental Cash Flow Information [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	90,000,000
Debt Instrument, Increase (Decrease), Net	27,750,000
Term Loan [Member]
Supplemental Cash Flow Information [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	30,000,000	30,000,000
Debt Instrument, Increase (Decrease), Net	$ 27,750,000