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Rental Expense and Lease Commitments (Details) - USD ($) | 12 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2018
Operating Leased Assets [Line Items] |  |  |
Short-term Lease, Cost | $ 0 |  |
Sublease Income | 0 |  |
Variable Lease, Cost | 0 |  |
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months | 8,285,000 |  |
Lessee, Operating Lease, Liability, Payments, Due Year Two | 7,756,000 |  |
Lessee, Operating Lease, Liability, Payments, Due Year Three | 6,853,000 |  |
Lessee, Operating Lease, Liability, Payments, Due Year Four | 4,662,000 |  |
Lessee, Operating Lease, Liability, Payments, Due Year Five | 4,190,000 |  |
Lessee, Operating Lease, Liability, Payments, Due after Year Five | 12,136,000 |  |
Lessee, Operating Lease, Liability, Undiscounted Excess Amount | 43,882,000 |  |
Receivable with Imputed Interest, Discount | 5,329,000 |  |
Operating Lease, Payments | $ 8,593,000 |  |
Operating Lease, Weighted Average Remaining Lease Term | 6 years 8 months 26 days |  |
Operating Lease, Right-of-Use Asset | $ 38,125,000 | $ 35,553,000 |
Operating Lease, Weighted Average Discount Rate, Percent | 4.05% |  |
Operating Lease, Liability, Current | $ 6,924,000 | 0 |
Operating Lease, Liability, Noncurrent | 31,629,000 | 0 |
Operating Lease, Liability | 38,553,000 |  |
Operating Lease, Cost | 8,869,000 | $ 12,248,000 | $ 13,020,000
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability | $ 10,589,000 |  |
Minimum [Member] |  |  |
Operating Leased Assets [Line Items] |  |  |
Lessee, Operating Lease, Term of Contract | 1 year |  |
Maximum [Member] |  |  |
Operating Leased Assets [Line Items] |  |  |
Lessee, Operating Lease, Term of Contract | 15 years |  |

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- Definition Amount of lessee's undiscounted obligation for lease payments for operating lease, due after fifth fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payments for operating lease, due in next fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fifth fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fourth fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payments for operating lease, due in third fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 + Details
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