Debt Schedule of Long-Term Debt Repayments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Repayments of Long-term Debt	$ 22,373	$ 30,625	$ 22,373	$ 51,250	$ 30,186	$ 68,750	$ 62,998	$ 102,438	$ 73,750
USD Denominated Term Loan [Member]
Debt Instrument [Line Items]
Repayments of Long-term Debt							13,125	26,250	18,750
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Repayments of Long-term Debt							49,873	76,188	55,000
Secured Debt [Member]
Debt Instrument [Line Items]
Repayments of Long-term Debt							$ 62,998	$ 102,438	$ 73,750