Derivative Financial Instruments (Details) - USD ($)	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Sep. 30, 2016
Effect of derivative financial instrument on the consolidated statements of comprehensive (loss) income
Amount of gain recognized on derivative in Other Comprehensive Income (loss)	$ 3,123,000	$ 12,000
Gain or loss recognized related to hedge ineffectiveness	0	0
Gain from components excluded from assessment of cash flow hedge effectiveness	0	0
Estimated amount to be reclassified from Accumulated other comprehensive income (loss) as an increase to interest expense	343,000
Interest Expense
Effect of derivative financial instrument on the consolidated statements of comprehensive (loss) income
Amount of gain (loss) reclassified from Accumulated Other Comprehensive Income (loss) into Interest Expense	(145,000)	$ (8,000)
Accounts Payable And Accrued Liabilities
Fair value of derivative financial instruments
Fair value of derivative financial instrument liability	1,666,000		$ 1,602,000
Designated As Hedging Instrument | Interest Rate Swap, Maturity Date April 1, 2022
Interest Rate Derivatives
Notional Amount	$ 1,531,000
Rate (as a percent)	5.25%
Designated As Hedging Instrument | Interest Rate Swap, Maturity Date May 6, 2023
Interest Rate Derivatives
Notional Amount	$ 26,400,000
Rate (as a percent)	3.61%
Designated As Hedging Instrument | Interest Rate Swap, Maturity Date September 19, 2026
Interest Rate Derivatives
Notional Amount	$ 27,000,000
Rate (as a percent)	4.05%