Fair Value Measurements and Derivative Instruments Reporting (Details) CAD in Millions	3 Months Ended
	Mar. 31, 2016 CAD item	Mar. 31, 2015 USD ($)	Mar. 31, 2016 USD ($) item	Dec. 31, 2015 USD ($)	Apr. 30, 2015 CAD	Apr. 30, 2015 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value on a nonrecurring basis			$ 0	$ 0
Cash equivalents			$ 0	$ 0
Derivative instruments		$ 0
Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of interest rate swap agreements | item	2		2
Minimum [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
CDOR exchange rate	3.89		3.89
Maximum [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
CDOR exchange rate	3.92		3.92
BMO Credit Agreement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional Value			$ 7,800,000
BMO Credit Agreement [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Line of Credit Facility, Expiration Date	Aug. 15, 2019
Notional Value	CAD 10.1		$ 7,800,000		CAD 10.1	$ 7,800,000