Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - Estimate of Fair Value - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	$ 0	$ 186
Securitized beneficial interests	27,021	40,332
Total assets	27,021	40,518
Long-term debt	359,630	830,785
Guarantees	2,791	3,714
Total liabilities	362,421	834,499
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	0	186
Securitized beneficial interests	0	0
Total assets	0	186
Long-term debt	358,782	830,082
Guarantees	0	0
Total liabilities	358,782	830,082
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	0	0
Securitized beneficial interests	27,021	40,332
Total assets	27,021	40,332
Long-term debt	848	703
Guarantees	2,791	3,714
Total liabilities	$ 3,639	$ 4,417