Discontinued Operations - Results of operations included in net income (loss) from discontinued operations (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	May 05, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Operating expenses:
Other income (expense), net		$ 30	$ (44)	$ 48	$ (28)
Gain on disposal of discontinued operations after income tax		0	0	0	11,288
Net income (loss) from discontinued operations, net of tax		(58)	(306)	(76)	9,624
Held for sale | Agriculture and Weather Analytics segment
Results of discontinued operations
Service revenue		0	0	0	695
Cost of service revenues		0	0	0	349
Gross profit		0	0	0	346
Operating expenses:
General and administrative		69	230	119	746
Research and development		0	0	0	407
Restructuring charges		0	0	0	837
Total operating expenses		69	230	119	1,990
Operating loss from discontinued operations		(69)	(230)	(119)	(1,644)
Other income (expense), net		11	(29)	43	27
Loss from discontinued operation before income tax		(58)	(259)	(76)	(1,617)
Income tax (benefit) expense		0	(47)	0	(47)
Net Loss from discontinued operations		(58)	(306)	(76)	(1,664)
Gain on disposal of discontinued operations before income tax	$ 11,315	0	0	0	11,315
Income tax benefit on gain on disposal		0	0	0	(27)
Gain on disposal of discontinued operations after income tax		0	0	0	11,288
Net income (loss) from discontinued operations, net of tax		$ (58)	$ (306)	$ (76)	$ 9,624