Summary of Significant Accounting Policies (Tables)

6 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Realized gains (losses) on derivatives not designated as hedging instruments

	Three Months Ended				Six Months Ended
	March 31,				March 31,
	2019		2018		2019		2018
Realized losses on derivatives not designated as hedging instruments	$	(3,831)	$	(4,548)	$	(854)	$	(6,221)