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Accounts Receivable, Unbilled Services and Deferred Revenue (Tables) | 9 Months Ended
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Jan. 31, 2021
Receivables [Abstract] |
Summary of accounts receivable, unbilled services, and advanced billings | Accounts receivable and unbilled services were as follows (in thousands):
| January 31, 2021 |  | April 30, 2020
Accounts receivable | $ | 3,333 |  |  | $ | 2,655 |
Unbilled services | 3,126 |  |  | 2,404 |
Total accounts receivable and unbilled services | 6,459 |  |  | 5,059 |
Less allowance for doubtful accounts | (338) |  |  | (289) |
Total accounts receivable, net | $ | 6,121 |  |  | $ | 4,770 |
Summary of advanced billings | Deferred revenue was as follows (in thousands):
| January 31, 2021 |  | April 30, 2020
Deferred revenue | $ | 6,615 |  |  | $ | 5,815 |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045 + Details
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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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