Discontinued Operations - Gain Recorded on Sale (Details) - USD ($) $ in Thousands		12 Months Ended
	May 05, 2020	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Deferred payments of purchase price		$ 1,500	$ 0	$ 0
Discontinued Operations, Held-for-sale | Agriculture and Weather Analytics Segment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Initial proceeds from sale, net of transaction costs	$ 9,440
Closing working capital adjustment	250
Deferred payments of purchase price	1,500
Total purchase considerations	11,190
Trade accounts receivable, net of allowance for doubtful accounts	1,060	0	863
Unbilled accounts receivable	488	0	504
Other classes of assets that are not major	194	0	73
Total assets of discontinued operations	1,742	78	2,102
Trade accounts payable	349	0	254
Deferred revenue	1,518	0	1,550
Total liabilities of discontinued operations	1,867	355	3,185
Gain on sale of Agriculture and Weather Analytics segment	$ 11,315	$ 11,315	$ 0	$ 0