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Revenue Recognition - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Mar. 31, 2020
Contract With Customer Assets And Liabilities [Line Items] |  |  |  |  |
Percentage of revenue from contracts recognized over time | 60.00% | 70.00% | 50.00% | 65.00% |
Percentage of revenue from contracts recognized upon shipment | 40.00% | 30.00% | 50.00% | 35.00% |
Revenue recognized included in contract liability | $ 2,700 |  | $ 10,050 |  |
Unbilled revenue (contract assets) |  |  | (901) |  |
Contract with customer liability increase in contract asset due to contract progress. |  |  | 12,283 |  |
Contract with customer liability offset by invoicing to customers. |  |  | 13,184 |  |
Customer deposits, current |  |  | 2,145 |  |
Contract with customer liability offset by new customer deposits. |  |  | 7,905 |  |
Receivables billed but not paid under retainage provisions in its customer contracts | 2,232 |  | 2,232 |  | $ 2,016
Amortization expense | 89 | $ 40 | 251 | $ 86 |
Revenue remaining unsatisfied performance obligations amount | 114,851 |  | 114,851 |  |
Customer Deposit [Member] |  |  |  |  |
Contract With Customer Assets And Liabilities [Line Items] |  |  |  |  |
Contract liabilities | 2,420 |  | 2,420 |  | 3,660
Prepaid Expenses and Other Current Assets [Member] |  |  |  |  |
Contract With Customer Assets And Liabilities [Line Items] |  |  |  |  |
Capitalized costs, net of amortization | $ 309 |  | $ 309 |  | $ 45

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- Definition The amount of obligation to transfer good or service to customer for which consideration is receivable. + References No definition available. + Details
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- Definition Amount of increase in contract with customer liability due to consideration that has been received or is receivable. + References No definition available. + Details
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- Definition Amount billed to customers under long-term contracts or programs that have been withheld because of retainage provisions in a contract. + References No definition available. + Details
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- Definition The percentage of total revenue from contracts from customers from the satisfaction of performance obligations at a point in time. + References No definition available. + Details
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- Definition The percentage of total revenue from contracts from customers from the satisfaction of performance obligations satisfied over time. + References No definition available. + Details
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- Definition Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054 + Details
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- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054 + Details
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- Definition Amount of increase (decrease) in revenue recognized for cumulative catch-up adjustment from change in measure of progress which increases (decreases) right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045 + Details
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- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045 + Details
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