| Summary of Cash and Cash Equivalents |
The following table summarizes the Company’s cash and cash equivalents as of October 31, 2017 and April 30, 2017 (in thousands): | | | | | | | | | | October 31,
2017 | | April 30,
2017 | Demand deposit accounts | $ | 50,211 |
| | $ | 46,164 |
| Money market funds | 178 |
| | 3,532 |
| Commercial paper | 1,399 |
| | 2,798 |
| U.S. government agency debt securities | 200 |
| | — |
| Total cash and cash equivalents | $ | 51,988 |
| | $ | 52,494 |
|
|
| Summary of Short-Term Investments |
The following table summarizes the Company’s short-term investments as of October 31, 2017 (in thousands): | | | | | | | | | | | | | | | | | | Cost | | Gross Unrealized Gains | | Gross Unrealized Losses | | Fair Value | Available-for-sale securities: | | | | | | | | Certificates of deposit | $ | 2,410 |
| | $ | — |
| | $ | — |
| | $ | 2,410 |
| Commercial paper | 2,268 |
| | — |
| | — |
| | 2,268 |
| U.S. government agency debt securities | 5,248 |
| | — |
| | (6 | ) | | 5,242 |
| Corporate debt securities | 3,307 |
| | — |
| | (3 | ) | | 3,304 |
| Total short-term investments | $ | 13,233 |
| | $ | — |
| | $ | (9 | ) | | $ | 13,224 |
|
The following table summarizes the Company’s short-term investments as of April 30, 2017 (in thousands): | | | | | | | | | | | | | | | | | | Cost | | Gross Unrealized Gains | | Gross Unrealized Losses | | Fair Value | Available-for-sale securities: | | | | | | | | Certificates of deposit | $ | 1,930 |
| | $ | — |
| | $ | — |
| | $ | 1,930 |
| Commercial paper | 4,206 |
| | — |
| | — |
| | 4,206 |
| U.S. Treasury securities | 8,705 |
| | — |
| | (5 | ) | | 8,700 |
| U.S. government agency debt securities | 16,733 |
| | — |
| | (15 | ) | | 16,718 |
| Corporate debt securities | 7,144 |
| | — |
| | (9 | ) | | 7,135 |
| Total short-term investments | $ | 38,718 |
| | $ | — |
| | $ | (29 | ) | | $ | 38,689 |
|
|
| Summary of Fair Value of Financial Assets and Liabilities |
The following table summarizes the fair value of the Company’s financial assets and liabilities that were measured on a recurring basis as of October 31, 2017 and April 30, 2017 (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fair Value Measurements at October 31, 2017 | | Fair Value Measurements at April 30, 2017 | | Level 1 | | Level 2 | | Level 3 | | Total | | Level 1 | | Level 2 | | Level 3 | | Total | Assets: | | | | | | | | | | | | | | | | Cash equivalents: | | | | | | | | | | | | | | | | Money market funds | $ | 178 |
| | $ | — |
| | $ | — |
| | $ | 178 |
| | $ | 3,532 |
| | $ | — |
| | $ | — |
| | $ | 3,532 |
| Commercial paper | — |
| | 1,399 |
| | — |
| | 1,399 |
| | — |
| | 2,798 |
| | — |
| | 2,798 |
| U.S. government agency securities | 200 |
| | — |
| | — |
| | 200 |
| | — |
| | — |
| | — |
| | — |
| Total cash equivalents | 378 |
| | 1,399 |
| | — |
| | 1,777 |
| | 3,532 |
| | 2,798 |
| | — |
| | 6,330 |
| Short-term investments: | | | | | | | | | | | | | | | | Certificates of deposit | — |
| | 2,410 |
| | — |
| | 2,410 |
| | — |
| | 1,930 |
| | — |
| | 1,930 |
| Commercial paper | — |
| | 2,268 |
| | — |
| | 2,268 |
| | — |
| | 4,206 |
| | — |
| | 4,206 |
| U.S. Treasury securities | — |
| | — |
| | — |
| | — |
| | 8,700 |
| | — |
| | — |
| | 8,700 |
| U.S. government agency securities | 5,242 |
| | — |
| | — |
| | 5,242 |
| | 16,718 |
| | — |
| | — |
| | 16,718 |
| Corporate debt securities | — |
| | 3,304 |
| | — |
| | 3,304 |
| | — |
| | 7,135 |
| | — |
| | 7,135 |
| Total short-term investments | 5,242 |
| | 7,982 |
| | — |
| | 13,224 |
| | 25,418 |
| | 13,271 |
| | — |
| | 38,689 |
| Total assets | $ | 5,620 |
| | $ | 9,381 |
| | $ | — |
| | $ | 15,001 |
| | $ | 28,950 |
| | $ | 16,069 |
| | $ | — |
| | $ | 45,019 |
|
|