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Fair Value of Financial Assets and Liabilities | 6 Months Ended
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Oct. 31, 2014
Fair Value of Financial Assets and Liabilities | 4. Fair Value of Financial Assets and Liabilities The following table summarizes the Company’s cash and cash equivalents as of October 31, 2014 and April 30, 2014 (in thousands):
|  | October 31, |  |  | April 30, |
|  | 2014 |  |  | 2014 |
Demand deposit accounts |  | $ | 28,603 |  |  | $ | 24,721 |
Money market funds |  |  | 4,149 |  |  |  | 6,971 |
Certificates of deposit |  |  | — |  |  |  | 242 |
Municipal bonds |  |  | 103 |  |  |  | — |
Total cash and cash equivalents |  | $ | 32,855 |  |  | $ | 31,934 |
The following table summarizes the Company’s short-term investments as of October 31, 2014 (in thousands):
|  | Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Certificates of deposit |  | $ | 7,510 |  |  | $ | 4 |  |  | $ | (2 | ) |  | $ | 7,512 |
Municipal bonds |  |  | 3,278 |  |  |  | 19 |  |  |  | (10 | ) |  |  | 3,287 |
Commercial paper |  |  | 5,997 |  |  |  | 2 |  |  |  | — |  |  |  | 5,999 |
U.S. Treasury notes |  |  | 31,830 |  |  |  | 13 |  |  |  | (2 | ) |  |  | 31,841 |
Total short-term investments |  | $ | 48,615 |  |  | $ | 38 |  |  | $ | (14 | ) |  | $ | 48,639 |
The following table summarizes the Company’s short-term investments as of April 30, 2014 (in thousands):
|  | Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Certificates of deposit |  | $ | 7,466 |  |  | $ | 17 |  |  | $ | (9 | ) |  | $ | 7,474 |
U.S. Treasury notes |  |  | 33,226 |  |  |  | 2 |  |  |  | (2 | ) |  |  | 33,226 |
Total short-term investments |  | $ | 40,692 |  |  | $ | 19 |  |  | $ | (11 | ) |  | $ | 40,700 |
All short-term investments had original maturity dates of less than 12 months as of October 31, 2014 and April 30, 2014. Realized gains and losses from the sale of short-term investments were not material for the three and six months ended October 31, 2014 and 2013. 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, 2014 and April 30, 2014 (in thousands):
|  | Fair Value Measurements at October 31, 2014 |  |  | Fair Value Measurements at April 30, 2014 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 4,149 |  |  | $ | — |  |  | $ | — |  |  | $ | 4,149 |  |  | $ | 6,971 |  |  | $ | — |  |  | $ | — |  |  | $ | 6,971 |
Certificates of deposit |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 242 |  |  |  | — |  |  |  | — |  |  |  | 242 |
Municipal bonds |  |  | — |  |  |  | 103 |  |  |  | — |  |  |  | 103 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Total cash equivalents |  |  | 4,149 |  |  |  | 103 |  |  |  | — |  |  |  | 4,252 |  |  |  | 7,213 |  |  |  | — |  |  |  | — |  |  |  | 7,213 |
Restricted cash |  |  | 1,000 |  |  |  | — |  |  |  | — |  |  |  | 1,000 |  |  |  | 604 |  |  |  | — |  |  |  | — |  |  |  | 604 |
Short-term investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Certificates of deposit |  |  | — |  |  |  | 7,512 |  |  |  | — |  |  |  | 7,512 |  |  |  | — |  |  |  | 7,474 |  |  |  | — |  |  |  | 7,474 |
Municipal bonds |  |  | — |  |  |  | 3,287 |  |  |  | — |  |  |  | 3,287 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Commercial paper |  |  | — |  |  |  | 5,999 |  |  |  | — |  |  |  | 5,999 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
U.S. Treasury notes |  |  | 31,841 |  |  |  | — |  |  |  | — |  |  |  | 31,841 |  |  |  | 33,226 |  |  |  | — |  |  |  | — |  |  |  | 33,226 |
Total short-term investments |  |  | 31,841 |  |  |  | 16,798 |  |  |  | — |  |  |  | 48,639 |  |  |  | 33,226 |  |  |  | 7,474 |  |  |  | — |  |  |  | 40,700 |
Total assets |  | $ | 36,990 |  |  | $ | 16,901 |  |  | $ | — |  |  | $ | 53,891 |  |  | $ | 41,043 |  |  | $ | 7,474 |  |  | $ | — |  |  | $ | 48,517 |
The Company measures certain assets, including property and equipment, goodwill and intangible assets, at fair value on a non-recurring basis. The Company evaluates transfers between levels at the end of the fiscal year and assumes that any identified transfers are deemed to have occurred at the end of the reporting year. There were no transfers between levels in any of the periods presented.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13504-108611 + Details
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