Fair Value of Financial Instruments - Carrying Amounts and Estimated Fair Values of Company Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivatives assets, Carrying Amount	$ 0	$ 0
Derivatives liabilities, Carrying Amount	2,432	1,151
Derivatives assets, Fair Value	0	0
Derivatives liabilities, Fair Value	2,432	1,151
Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes Payable, Fair Value Disclosure	600,000	300,000
Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes Payable, Fair Value Disclosure	$ 573,000	$ 297,000