Fair Value of Financial Assets and Liabilities (Tables)
|
9 Months Ended |
Jan. 31, 2016 |
|---|
| Fair Value Disclosures [Abstract] |
|
| Summary of Cash and Cash Equivalents |
The following table summarizes the Company’s cash and cash equivalents as of January 31, 2016 and April 30, 2015 (in thousands): | | | | | | | | | | January 31,
2016 | | April 30,
2015 | Demand deposit accounts | $ | 53,041 |
| | $ | 49,977 |
| Money market funds | 462 |
| | 2,831 |
| Municipal debt securities | — |
| | 102 |
| Commercial paper | 1,940 |
| | 875 |
| U.S. government agency debt securities | 2,501 |
| | — |
| Corporate debt securities | — |
| | 256 |
| Total cash and cash equivalents | $ | 57,944 |
| | $ | 54,041 |
|
|
| Summary of Short-Term Investments |
The following table summarizes the Company’s short-term investments as of January 31, 2016 (in thousands): | | | | | | | | | | | | | | | | | | Cost | | Gross Unrealized Gains | | Gross Unrealized Losses | | Fair Value | Available-for-sale securities: | | | | | | | | Certificates of deposit | $ | 7,810 |
| | $ | — |
| | $ | (1 | ) | | $ | 7,809 |
| Municipal debt securities | 391 |
| | — |
| | — |
| | 391 |
| Commercial paper | 3,442 |
| | — |
| | — |
| | 3,442 |
| U.S. Treasury securities | 8,769 |
| | — |
| | (8 | ) | | 8,761 |
| U.S. government agency debt securities | 25,078 |
| | — |
| | (35 | ) | | 25,043 |
| Corporate debt securities | 5,543 |
| | — |
| | (14 | ) | | 5,529 |
| Total short-term investments | $ | 51,033 |
| | $ | — |
| | $ | (58 | ) | | $ | 50,975 |
|
The following table summarizes the Company’s short-term investments as of April 30, 2015 (in thousands): | | | | | | | | | | | | | | | | | | Cost | | Gross Unrealized Gains | | Gross Unrealized Losses | | Fair Value | Available-for-sale securities: | | | | | | | | Certificates of deposit | $ | 4,000 |
| | $ | 4 |
| | $ | — |
| | $ | 4,004 |
| Municipal debt securities | 4,564 |
| | 17 |
| | (16 | ) | | 4,565 |
| Commercial paper | 6,269 |
| | 4 |
| | — |
| | 6,273 |
| U.S. Treasury securities | 11,814 |
| | — |
| | (11 | ) | | 11,803 |
| U.S. government agency debt securities | 17,007 |
| | 1 |
| | (3 | ) | | 17,005 |
| Corporate debt securities | 9,104 |
| | 4 |
| | (28 | ) | | 9,080 |
| Total short-term investments | $ | 52,758 |
| | $ | 30 |
| | $ | (58 | ) | | $ | 52,730 |
|
|
| Contractual Maturities of Available-for-Sale Debt Securities |
Contractual maturities of available-for-sale securities at January 31, 2016, are as follows (in thousands): | | | | | | Estimated Fair Value | Due in one year or less | $ | 47,507 |
| Due in 1-2 years | 3,468 |
| Total investments in debt securities | $ | 50,975 |
|
|
| 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 January 31, 2016 and April 30, 2015 (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fair Value Measurements at January 31, 2016 | | Fair Value Measurements at April 30, 2015 | | Level 1 | | Level 2 | | Level 3 | | Total | | Level 1 | | Level 2 | | Level 3 | | Total | Assets: | | | | | | | | | | | | | | | | Cash equivalents: | | | | | | | | | | | | | | | | Money market funds | $ | 462 |
| | $ | — |
| | $ | — |
| | $ | 462 |
| | $ | 2,831 |
| | $ | — |
| | $ | — |
| | $ | 2,831 |
| Municipal bonds | — |
| | — |
| | — |
| | — |
| | — |
| | 102 |
| | — |
| | 102 |
| Commercial paper | — |
| | 1,940 |
| | — |
| | 1,940 |
| | — |
| | 875 |
| | — |
| | 875 |
| U.S. government agency securities | 2,501 |
| | — |
| | — |
| | 2,501 |
| | — |
| | — |
| | — |
| | — |
| Corporate securities | — |
| | — |
| | — |
| | — |
| | — |
| | 256 |
| | — |
| | 256 |
| Total cash equivalents | 2,963 |
| | 1,940 |
| | — |
| | 4,903 |
| | 2,831 |
| | 1,233 |
| | — |
| | 4,064 |
| Short-term investments: | | | | | | | | | | | | | | | | Certificates of deposit | — |
| | 7,809 |
| | — |
| | 7,809 |
| | — |
| | 4,004 |
| | — |
| | 4,004 |
| Municipal bonds | — |
| | 391 |
| | — |
| | 391 |
| | — |
| | 4,565 |
| | — |
| | 4,565 |
| Commercial paper | — |
| | 3,442 |
| | — |
| | 3,442 |
| | — |
| | 6,273 |
| | — |
| | 6,273 |
| U.S. Treasury securities | 8,761 |
| | — |
| | — |
| | 8,761 |
| | 11,803 |
| | — |
| | — |
| | 11,803 |
| U.S. government agency securities | 25,043 |
| | — |
| | — |
| | 25,043 |
| | 17,005 |
| | — |
| | — |
| | 17,005 |
| Corporate securities | — |
| | 5,529 |
| | — |
| | 5,529 |
| | — |
| | 9,080 |
| | — |
| | 9,080 |
| Total short-term investments | 33,804 |
| | 17,171 |
| | — |
| | 50,975 |
| | 28,808 |
| | 23,922 |
| | — |
| | 52,730 |
| Total assets | $ | 36,767 |
| | $ | 19,111 |
| | $ | — |
| | $ | 55,878 |
| | $ | 31,639 |
| | $ | 25,155 |
| | $ | — |
| | $ | 56,794 |
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