| Accounts Receivable (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
| Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2020 | |
| Receivables [Abstract] | |||||
| Billed | $ 28,672 | $ 28,672 | $ 18,927 | ||
| Unbilled | 35,268 | 35,268 | 18,267 | ||
| Allowance for doubtful accounts | (4,913) | (4,913) | (4,059) | ||
| Accounts receivable, net | 59,027 | 59,027 | $ 33,135 | ||
| Bad debt expense | $ 187 | $ 56 | $ 415 | $ 184 | |
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- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount of allowance for credit loss on accounts receivable, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount of direct write-downs of accounts receivable charged against the allowance. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amounts due for billed services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the Company and, at a minimum, one other party. An example would be amounts billed to customers under contracts or programs but not paid as of the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- References No definition available. 
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- Definition Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer. No definition available. 
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