Additional Consolidated Balance Sheets Information Additional Consolidated Balance Sheets Information (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020
Accrued payroll and other related liabilities:
Compensation and related items	$ 45,787	$ 42,205
Accrued vacation/paid time off	10,899	9,917
Accrued bonuses	12,621	53,041
Accrued employee commissions	8,876	19,298
Other postretirement benefit obligations-current portion	1,488	1,488
Other employee benefit plans obligations-current portion	2,368	2,312
Total accrued payroll and other related liabilities	82,039	128,261
Accrued expenses and other:
Deferred revenues	39,975	53,299
Service liabilities	45,423	47,505
Self-insured risk reserves-current portion	7,942	7,342
Accrued dealer commissions	18,841	15,827
Accrued warranty	7,002	7,381
Asset retirement obligation-current portion	908	2,671
Other	60,107	58,158
Total accrued expenses and other	180,198	192,183
Other liabilities:
Self-insured risk reserves-long-term portion	17,452	17,452
Other postretirement benefit obligations-long-term portion	9,012	9,880
Defined benefit pension plans obligations-long-term portion	11,632	10,987
Other employee benefit plans obligations-long-term portion	2,371	2,333
Accrued long-term income taxes	11,991	11,959
Asset retirement obligation-long-term portion	11,120	9,843
Long-term liabilities, other	22,808	27,892
Other Liabilities, Noncurrent	$ 86,386	$ 90,346