Employee Benefit Plans (Tables)

12 Months Ended

Jul. 31, 2014

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:

	2014			2013
Obligation at beginning of year	$	13,023		$	14,225
Service cost	674			770
Interest cost	534			476
Actuarial (gain)/loss	(4,691		)	(1,745		)
Benefit payments	(473		)	(703		)
Plan amendments	(1,011		)	—
Obligation at end of fiscal year	$	8,056		$	13,023

Schedule of Amounts Recognized in Balance Sheet

As of July 31, 2014 and 2013, amounts recognized as liabilities in the accompanying consolidated balance sheets consist of:

	2014		2013
Current liability	$	476	$	677
Non-current liability	7,580		12,346
	$	8,056	$	13,023

Schedule of Amounts Recognized in Other Comprehensive Income (Loss)

As of July 31, 2014 and 2013, pre-tax amounts recognized in accumulated other comprehensive income in the accompanying consolidated balance sheets consist of:

	2014		2013
Net actuarial gain	$	7,960	$	3,534
Prior service credit	2,011		1,203
	$	9,971	$	4,737

Schedule of Net Periodic Benefit Cost Not yet Recognized

Net periodic benefit cost for the Plan for fiscal years 2014, 2013, and 2012 includes the following components:

	Years Ended July 31,
	2014			2013			2012
Net periodic postretirement benefit cost included the following components:
Service cost — benefits attributed to service during the period	$	674		$	770		$	644
Prior service credit	(203		)	(203		)	(203		)
Interest cost on accumulated postretirement benefit obligation	534			476			633
Amortization of unrecognized gain	(265		)	(47		)	(189		)
Periodic postretirement benefit cost	$	740		$	996		$	885

Schedule of Assumptions Used

The following assumptions were used in accounting for the Plan:

	2014		2013		2012
Weighted average discount rate used in determining accumulated postretirement benefit obligation liability	3.50	%	4.00	%	3.25	%
Weighted average discount rate used in determining net periodic benefit cost	4.00	%	3.25	%	4.50	%
Assumed health care trend rate used to measure APBO at July 31	7.50	%	8.00	%	8.00	%
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	2018		2018		2016

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	$	14	$	(14	)
Effect on accumulated postretirement benefit obligation at July 31, 2014	26		(28		)

Schedule of Expected Benefit Payments

The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid during the years ending July 31:

2015	$	476
2016	524
2017	596
2018	654
2019	714
2020 through 2024	4,137