| Accounts Receivable (Details) - USD ($) $ in Thousands | 3 Months Ended | ||||
|---|---|---|---|---|---|
| Jun. 30, 2021 | Jun. 30, 2020 | Mar. 31, 2021 | |||
| Receivables [Abstract] | |||||
| Billed | $ 155,353 | $ 28,636 | |||
| Unbilled | 69,231 | 38,837 | |||
| Allowance for credit losses | (5,485) | (5,488) | |||
| Accounts receivable, net | [1] | 219,099 | $ 61,985 | ||
| Bad debt expense | $ 108 | $ 92 | |||
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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 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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- Definition Amount of expense (reversal of expense) for expected credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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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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