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Accounts Receivable, Unbilled Services and Deferred Revenue (Tables) | 12 Months Ended
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Apr. 30, 2019
Receivables [Abstract] |
Schedule of Accounts, Notes, Loans and Financing Receivable | Accounts receivable and unbilled services were as follows (in thousands):
| April 30, 2019 |  | April 30, 2018
Accounts receivable | $ | 1,982 |  |  | $ | 1,837 |
Unbilled services | 2,417 |  |  | 2,093 |
Total accounts receivable and unbilled services | 4,399 |  |  | 3,930 |
Less allowance for doubtful accounts | (22 | ) |  | (13 | )
Total accounts receivable, net | $ | 4,377 |  |  | $ | 3,917 |
Deferred Revenue | Deferred revenue was as follows (in thousands):
| April 30, 2019 |  | April 30, 2018
Deferred revenue | $ | 4,022 |  |  | $ | 4,704 |

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- Definition Tabular disclosure of the type of arrangements and the corresponding amounts that comprise the current and noncurrent balance of deferred revenue as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6935-107765 + 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=6877327&loc=d3e13212-122682 + Details
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