Employee Benefit Plans (Tables)

12 Months Ended

Jul. 31, 2017

Compensation and Retirement Disclosure [Abstract]

Schedule of Changes in Accumulated Postemployment Benefit Obligations

The following table provides a reconciliation of the changes in the Plan’s accumulated benefit obligation during the years ended July 31:

	2017			2016
Obligation at beginning of year	$	3,800		$	4,135
Service cost	—			9
Interest cost	89			114
Actuarial gain	—			(38		)
Benefit payments	(499		)	(420		)
Obligation at end of fiscal year	$	3,390		$	3,800

Schedule of Amounts Recognized in Balance Sheet

As of July 31, 2017 and 2016, amounts recognized as liabilities in the accompanying Consolidated Balance Sheets consist of:

	2017		2016
Current liability	$	449	$	499
Non-current liability	2,941		3,301
	$	3,390	$	3,800

Schedule of Amounts Recognized in Other Comprehensive Income (Loss)

As of July 31, 2017 and 2016, pre-tax amounts recognized in accumulated other comprehensive loss in the accompanying Consolidated Balance Sheets consist of net actuarial gains of $5,504 and $6,048, respectively.

Schedule of Net Periodic Benefit Cost Not yet Recognized

Net periodic benefit gain for the Plan for fiscal years ended July 31, 2017, 2016, and 2015 includes the following components:

	Years Ended July 31,
	2017			2016			2015
Net periodic postretirement benefit gain included the following components:
Service cost	$	—		$	9		$	210
Interest cost	89			114			222
Amortization of prior service credit	—			(1,035		)	(1,169		)
Amortization of net actuarial gain	(544		)	(646		)	(804		)
Curtailment gain	—			—			(4,296		)
Periodic postretirement benefit gain	$	(455	)	$	(1,558	)	$	(5,837	)

Schedule of Assumptions Used

The following assumptions were used in accounting for the Plan:

	2017		2016		2015
Weighted average discount rate used in determining accumulated postretirement benefit obligation	2.50	%	2.50	%	3.00	%
Weighted average discount rate used in determining net periodic benefit cost	2.50	%	3.00	%	3.41	%
Assumed health care trend rate used to measure accumulated postretirement benefit obligation at July 31	7.25	%	7.50	%	7.00	%
Rate to which cost trend rate is assumed to decline (the ultimate trend rate)	5.50	%	5.50	%	5.50	%
Fiscal year the ultimate trend rate is reached	2024		2018		2018

Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates

A one-percentage point change in assumed health care cost trend rates would have the following effects on the Plan:

	One-Percentage Point Increase		One-Percentage Point Decrease
Effect on future service and interest cost	$	4	$	(5	)
Effect on accumulated postretirement benefit obligation at July 31, 2017	18		(19		)

Schedule of Expected Benefit Payments

The following benefit payments are expected to be paid during the years ending July 31:

2018	$	449
2019	377
2020	359
2021	339
2022	309
2023 through 2027	1,241