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Fair Value Measurements (Tables) | 6 Months Ended
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Jan. 31, 2020
Text Block [Abstract] |
Financial Assets and Liabilities Accounted for at Fair Value on a Recurring Basis | The following table summarizes the Company's financial assets and liabilities that were accounted for at fair value on a recurring basis at January 31, 2020 and July 31, 2019, according to the valuation techniques the Company used to determine their fair values.
| January 31, 2020 |  | July 31, 2019 |  | Fair Value Hierarchy
Assets: |  |  |  |  |
Trading securities | $ | 18,143 |  |  | $ | 15,744 |  |  | Level 1
Foreign exchange contracts | 740 |  |  | 474 |  |  | Level 2
Liabilities: |  |  |  |  |
Foreign exchange contracts | 33 |  |  | 5 |  |  | Level 2
Schedule of Debt [Table Text Block] |
| January 31, 2020 | July 31, 2019
| Carrying Value |  | Fair Value |  | Carrying Value |  | Fair Value
Current maturities on long-term debt | $ | 49,627 |  |  | $ | 50,127 |  |  | $ | 50,166 |  |  | $ | 51,566 |

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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- 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19190-110258 + Details
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