Defined Contribution Plans	12 Months Ended
Jul. 31, 2019
Retirement Benefits [Abstract]
Defined Contribution Plans	Note 23—Defined Contribution Plans The Company maintains a 401(k) Plan available to all employees meeting certain eligibility criteria. The Plan permits participants to contribute up to 20% of their salary, not to exceed the limits established by the Internal Revenue Code. The Plan provides for discretionary matching contributions of 50%, up to the first 6% of compensation. The discretionary matching contributions vest over the first five years of employment. The Plan permits the discretionary matching contributions to be granted as of December 31 of each year. All contributions made by participants vest immediately into the participant's account. In fiscal 2019, fiscal 2018 and fiscal 2017, the Company's expense related to the Plan was $1.2 million, $1.1 million and $1.2 million, respectively. The Company's Class A common stock and Class B common stock are not investment options for the Plan's participants.

The entire disclosure of an entity's employee compensation and benefit plans, excluding share-based compensation and including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, life insurance, severance, health care, unemployment and other benefit plans.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 712
-URI http://asc.fasb.org/topic&trid=2197446

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-URI http://asc.fasb.org/topic&trid=2235017

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 710
-URI http://asc.fasb.org/topic&trid=2127225

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