Derivative Instruments - Schedule of Offsetting Derivative Asset and Liability Positions (Details) - Counterparty A - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020
Derivatives, Fair Value [Line Items]
Derivative asset, fair value	$ 4,643	$ 175
Derivative asset, netting adjustment	(23)	(175)
Derivative asset, cash collateral posted	0	0
Derivative asset, net	4,620	0
Derivative liability, fair value	3,185	8,115
Derivative liability, netting adjustment	0	(176)
Derivative liability, cash collateral posted	0	0
Derivative liability, net	$ 3,185	$ 7,939