Segment Information, Income Taxes Paid by Geographical Area (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Segment Reporting Information
Income Taxes Paid	$ 0.5	$ 0.6	$ 0.8	$ 1.6
UNITED STATES
Segment Reporting Information
Income Taxes Paid	0.2	0.2	0.3	0.3
Canada
Segment Reporting Information
Income Taxes Paid	$ 0.3	$ 0.4	$ 0.5	$ 1.3