Allowance for Current Expected Credit Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Allowance for Expected Credit Loss
Change in provision for expected credit losses	$ 929	$ 5,988	$ 1,002
Crude oil logistics
Allowance for Expected Credit Loss
Amount owed for deficiency volumes		5,700
Trade Accounts Receivable
Allowance for Expected Credit Loss
Accounts receivable - trade, allowance for expected credit loss	2,626	2,192	4,540	$ 4,016
Cumulative effect adjustment	0	433	0
Change in provision for expected credit losses	929	319	1,202
Write-offs charged against the provision	(491)	(3,100)	(678)
Disposition of Sawtooth (See Note 17)	(4)
Notes Receivable and Other
Allowance for Expected Credit Loss
Cumulative effect adjustment		680
Write-offs charged against the provision		(222)
Notes receivable and other, allowance for expected credit loss	$ 458	$ 458	$ 0