Derivative Financial Instruments (Tables)

6 Months Ended

Mar. 31, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of fair value of derivatives designated as hedging instruments

The fair values of our outstanding derivatives designated as hedging instruments were as follows:

		Fair Value of Derivative Instruments as of
	Balance Sheet Location	March 31, 2019			September 30, 2018
		(in thousands)
Interest rate swap agreements	Other current (liabilities) assets	$	(5,530	)	$	1,244