Employee Benefit Plans (Tables)

12 Months Ended

Jun. 30, 2016

Compensation and Retirement Disclosure [Abstract]

Schedule of changes in projected benefit obligation, plan assets and the funded status

For the Years Ended June 30	2016			2015
Change in projected benefit obligation
Projected benefit obligation at beginning of year		$	62,605		$	57,599
Service cost			2,939			2,954
Interest cost			2,893			2,618
Benefits paid			(1,271)			(1,116)
Actuarial (gain) loss			8,498			550
Projected benefit obligation at end of year		$	75,664		$	62,605

For the Years Ended June 30	2016			2015
Change in plan assets
Fair value of plan assets at beginning of year		$	44,032		$	39,581
Actual return on plan assets			(1,202)			(1,248)
Employer contributions			12,734			6,815
Benefits paid			(1,271)			(1,116)
Fair value of plan assets at end of year		$	54,293		$	44,032
Funded status at end of year		$	(21,371)		$	(18,573)

Schedule of accumulated other comprehensive (income) loss related to the pension plan

For the Years Ended June 30	2016			2015
Accumulated Other Comprehensive (Income) Loss Related to Pension Plan
Balance at beginning of period		$	19,884		$	16,663
Amortization of net actuarial loss and prior service costs			(1,784)			(1,405)
Current period net actuarial loss			12,877			4,626
Net change			11,093			3,221
Balance at end of period		$	30,977		$	19,884

Schedule of net periodic pension expense

For the Years Ended June 30	2016			2015			2014
Service cost−benefits earned during the year		$	2,939		$	2,954		$	2,457
Interest cost on benefit obligation			2,893			2,618			2,333
Expected return on plan assets			(3,177)			(2,828)			(2,334)
Amortization of net actuarial loss and prior service costs			1,784			1,405			904
Net periodic pension expense		$	4,439		$	4,149		$	3,360

Schedule of significant actuarial assumptions

For the Years Ended June 30	2016	2015	2014
Discount rate for service and interest	4.6%	4.5%	5.0%
Expected rate of return on plan assets	6.1%	6.7%	7.0%
Rate of compensation increase	3.0%–6.0%	3.0%–6.0%	3.0%–4.5%
Discount rate for year-end benefit  obligation	3.9%	4.6%	4.5%

Schedule of estimated future benefit payments, including benefits attributable to future service

For the Years Ended June 30
2017	$	1,934
2018		2,196
2019		2,480
2020		2,780
2021		3,081
2022–2026		19,684

Schedule of weighted-average asset allocation of plan assets

	Target Allocation	Percentage of Plan Assets
For the years ended June 30	2017	2016		2015
Debt securities	10%–35%		19%		19%
Equity securities	25%–55%		43%		35%
Global asset allocation/risk parity(1)	15%–35%		26%		35%
Other	0%–25%		12%		11%

(1)     The global asset allocation/risk parity category consists of a variety of asset classes including, but not limited to, global bonds, global equities, real estate and commodities.

Schedule of fair values of the Company's plan assets by asset category

	Fair Value Measurements Using
As of June 30, 2016	Level 1			Level 2			Level 3			Total
Cash and cash equivalents		$	713		$	—		$	—		$	713
Common-collective funds
Global large cap equities			—			11,963			6,596			18,559
Fixed income securities			—			7,583			—			7,583
Global asset allocations/risk parity			—			4,878			—			4,878
Mutual funds
Global Equities			4,611			—			—			4,611
Fixed income securities			1,366			—			—			1,366
Global asset allocations/risk parity			2,667			—			—			2,667
Other
Fixed income securities			—			—			1,434			1,434
Global asset allocations/risk parity			—			—			6,554			6,554
Other			—			—			5,929			5,929
		$	9,357		$	24,424		$	20,513		$	54,294

	Fair Value Measurements Using
As of June 30, 2015	Level 1			Level 2			Level 3			Total
Cash and cash equivalents		$	129		$	—		$	—		$	129
Common-collective funds
Global large cap equities			—			10,995			—			10,995
Fixed income securities			—			8,565			—			8,565
Global asset allocations/risk parity			—			6,685			—			6,685
Mutual funds
Global equities			4,366			—			—			4,366
Global asset allocations/risk parity			4,303			—			—			4,303
Other
Global asset allocations/risk parity			—			—			4,251			4,251
Other			—			—			4,738			4,738
		$	8,798		$	26,245		$	8,989		$	44,032

Schedule of summary of the changes in the fair value of level 3 assets

Change in Fair Value Level 3 assets	2016			2015
Balance at beginning of period		$	8,989		$	10,031
Redemptions			(3,656)			(2,026)
Purchases			15,695			1,280
Change in fair value			(515)			(296)
Balance at end of period		$	20,513		$	8,989