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Note 4 - Fair Value Measurements - Fair Value and Carrying Value of the Notes (Details) - Senior Notes [Member] - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023
Reported Value Measurement [Member]
Notes	$ 170,502	$ 170,272
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Notes	$ 154,495	$ 161,072

X

- Definition

Fair value portion of notes payable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20,22)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

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Balance Type:	credit
Period Type:	instant

X

- Details

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- Details

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- Details

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- Details

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