Additional Consolidated Balance Sheets Information (Details) - USD ($)
$ in Thousands |
Mar. 31, 2020 |
Mar. 31, 2019 |
Mar. 31, 2018 |
Mar. 31, 2017 |
| Notes To Financial Statements [Abstract] |
|
|
|
|
| Employee-related Liabilities |
$ 42,205
|
$ 37,251
|
|
|
| Accrued Vacation |
9,917
|
10,191
|
|
|
| Accrued Bonuses |
53,041
|
40,194
|
|
|
| Accrued Liabilities for Commissions, Expense and Taxes |
19,298
|
17,854
|
|
|
| Liability, Other Retirement Benefits |
1,488
|
1,633
|
|
|
| Liability, Retirement and Postemployment Benefits |
2,312
|
1,935
|
|
|
| Employee-related Liabilities, Current |
128,261
|
109,058
|
|
|
| Deferred Revenue |
53,299
|
55,333
|
|
|
| Service liabilities |
47,505
|
42,101
|
|
|
| Self Insurance Reserve, Current |
7,342
|
6,537
|
|
|
| Accrued Sales Commission |
15,827
|
15,283
|
|
|
| Standard and Extended Product Warranty Accrual |
7,381
|
7,194
|
$ 6,872
|
$ 6,861
|
| Asset Retirement Obligation, Current |
2,671
|
2,656
|
|
|
| Other Accrued Liabilities |
58,158
|
58,661
|
|
|
| Accrued Liabilities |
192,183
|
187,765
|
|
|
| Self Insurance Reserve, Noncurrent |
17,452
|
14,445
|
|
|
| Liability, Other Retirement Benefits, Noncurrent |
9,880
|
10,918
|
|
|
| Liability, Defined Benefit Pension Plan, Noncurrent |
10,987
|
16,168
|
|
|
| Liability, Pension and Other Postretirement and Postemployment Benefits, Noncurrent |
2,333
|
4,711
|
|
|
| Accrued Income Taxes, Noncurrent |
11,959
|
13,515
|
|
|
| Asset Retirement Obligations, Noncurrent |
9,843
|
9,730
|
|
|
| Business Combination, Contingent Consideration, Asset, Noncurrent |
15,358
|
5,950
|
|
|
| Other Liabilities |
12,534
|
12,375
|
|
|
| Other Liabilities, Noncurrent |
$ 90,346
|
$ 87,812
|
|
|