| Accounts Receivable (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
| Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Mar. 31, 2019 | |
| Receivables [Abstract] | |||||
| Billed | $ 15,196 | $ 15,196 | $ 11,833 | ||
| Unbilled | 11,160 | 11,160 | 11,769 | ||
| Allowance for doubtful accounts | (1,053) | (1,053) | (895) | ||
| Accounts receivable, net | 25,303 | 25,303 | $ 22,707 | ||
| Bad debt expense | $ 74 | $ 81 | $ 128 | $ 170 | |
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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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