Note 7 - Leases - Minimum Operating and Capital Lease Payments (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
2020, Operating		$ 28,689
2020, Capital		7,827
2021, Operating		24,938
2021, Capital		7,827
2022, Operating		17,526
2022, Capital		7,827
2023, Operating		12,062
2023, Capital		7,827
2024, Operating		5,950
2024, Capital		6,102
2025-2031, Operating		6,927
2025-2031, Capital		5,267
Total minimum payment required, Operating		96,092
Total minimum payment required, Capital		42,677
Less interest, Capital		4,973
Present value of minimum lease payments, Capital		37,704
Amount due within one year, Capital		6,418
Long-term capital lease obligation		$ 31,286

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121616839&loc=d3e45280-112737