Significant Accounting Policies - Additional Information (Details) - USD ($)	3 Months Ended	9 Months Ended
	Jun. 30, 2016	Jun. 30, 2016	Sep. 30, 2015
Significant Accounting Policies [Line Items]
Impairment of rental assets	$ 1,000,000	$ 998,000
Impairment of property plant and equipment		$ 0
Current assets
Significant Accounting Policies [Line Items]
Effect of retrospective adjustment due to accounting standard update			$ (6,400,000)
Current liabilities
Significant Accounting Policies [Line Items]
Effect of retrospective adjustment due to accounting standard update			(10,000)
Non-Current deferred tax assets
Significant Accounting Policies [Line Items]
Effect of retrospective adjustment due to accounting standard update			3,000,000
Non-Current deferred tax liabilities
Significant Accounting Policies [Line Items]
Effect of retrospective adjustment due to accounting standard update			$ (3,400,000)