XML 37 R26.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Fair Value Measurements (Tables) | 9 Months Ended
--- | ---
Apr. 30, 2018
Fair Value Measurements [Abstract] |
Summary of balance of assets measured at fair value on a recurring basis |
|  | Level 1 (1) |  |  | Level 2 (2) |  |  | Level 3 (3) |  |  | Total |
|  | (in thousands) |
April 30, 2018 |  |  |  |  |  |  |  |  |  |  |  |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |
Marketable securities |  | $ | 1,794 |  |  | $ | 8,776 |  |  | $ | — |  |  | $ | 10,570 |
July 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Marketable securities |  | $ | 12,151 |  |  | $ | 46,121 |  |  | $ | — |  |  | $ | 58,272 |
Rafael Pharma Series D Note |  |  | — |  |  |  | — |  |  |  | 6,300 |  |  |  | 6,300 |
Total |  | $ | 12,151 |  |  | $ | 46,121 |  |  | $ | 6,300 |  |  | $ | 64,572 |
(1) – quoted prices in active markets for identical assets or liabilities (2) – observable inputs other than quoted prices in active markets for identical assets and liabilities (3) – no observable pricing inputs in the market
Summary of assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) |
|  | Three Months Ended April 30, |  |  | Nine Months Ended April 30, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
|  | (in thousands) |
Balance, beginning of period |  | $ | 6,300 |  |  | $ | 4,200 |  |  | $ | 6,300 |  |  | $ | 2,000 |
Purchases |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 2,200 |
Rafael Spin-Off |  |  | (6,300 | ) |  |  | — |  |  |  | (6,300 | ) |  |  | — |
Balance, end of period |  | $ | — |  |  | $ | 4,200 |  |  | $ | — |  |  | $ | 4,200 |
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the period |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |

X
- Definition Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19279-110258 + Details
Name: | us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_FairValueDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
Name: | us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration