Note 1 - Basis of Presentation (Details Textual) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2019	Apr. 01, 2019
Goodwill, Translation and Purchase Accounting Adjustments	$ 7,720
Operating Lease, Liability, Total	$ 20,361
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset		$ 18,351
Operating Lease, Liability, Total		$ 18,053