Lease Financing Transaction (Details) CAD in Thousands, $ in Millions	1 Months Ended		9 Months Ended
	Jun. 30, 2017 USD ($) property	Jun. 30, 2017 CAD property	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2017 CAD
Leases [Abstract]
Number of properties sold | property	2	2
Proceeds from sale of properties	$ 10.7	CAD 14,250	$ 3.7	$ 0.8
Lease term	15 years	15 years
Sale Leaseback Transaction [Line Items]
Total due under lease agreement	$ 12.6				CAD 16,700
Other current liabilities and other noncurrent accrued liabilities [Member]
Sale Leaseback Transaction [Line Items]
Total due under lease agreement | $			$ 11.4