Long-Term Debt (Schedule of Long-term Debt) (Details) In Thousands, unless otherwise specified	Mar. 31, 2013 USD ($)	Mar. 31, 2013 CAD	Dec. 31, 2012 USD ($)	Mar. 31, 2012 USD ($)	Mar. 31, 2013 BMO Credit Agreement [Member] USD ($)	Mar. 31, 2012 BMO Credit Agreement [Member] USD ($)
Debt Instrument [Line Items]
Total long-term debt	$ 10,619	10,785		$ 3,564	$ 10,619	$ 3,564
Less: current portion	(1,173)		(372)	(372)
Long-term portion	$ 9,446		$ 3,192	$ 3,192