Note 2 - Revenue Recognition - Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Unbilled AR, ending balance	$ 6,150	$ 9,958
Deferred Program Costs, ending balance	2,523	2,136
Contract Liabilities, ending balance	57,829	50,760
Deferred Program Costs, increases for costs incurred to fulfill performance obligations	2,119	1,084
Unbilled AR, increase (decrease) due to customer billings	(3,521)	(9,479)
Increase (decrease) due to customer billings	27,577	16,308
Deferred Program Costs, decrease due to cost recognition on completed performance obligations	(606)	(1,234)
Unbilled AR, increase (decrease) due to recognition of revenue based on transfer of control of performance obligations	2,291	5,092
Increase (decrease) due to recognition of revenue based on transfer of control of performance obligations	(22,443)	(8,974)
Other changes and FX impact	(2)	1
Deferred Program Costs, Other changes and foreign currency exchange impact	(2)	0
Contract Liabilities, Other changes and foreign currency exchange impact	(50)	(11)
Ending balance as of June 30, 2024	4,918	5,572
Deferred Program Costs, ending balance	4,034	1,986
Contract Liabilities, ending balance	$ 62,913	$ 58,083