EMPLOYEE BENEFIT AND RETIREMENT PLANS - Narrative (Details)		12 Months Ended
	Dec. 31, 2013 USD ($)	Jun. 30, 2022 USD ($) plan	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 29, 2021 USD ($)	Jan. 31, 2021	Jun. 30, 2019 USD ($)
Statement [Line Items]
Defined contribution plan cost		$ 1,600,000	$ 1,400,000	$ 1,600,000
Pension plan cost		200,000	100,000	$ 16,900,000
Increase (decrease) in benefit obligation		13,700,000
Benefit obligation		23,700,000	$ 37,400,000
Actuarial (gain) loss		$ 200,000
Discount rate		4.77%	2.69%	2.73%		2.57%
Decrease in benefit liability obligation		$ 38,300,000
Decrease in plan assets		24,600,000
Nonqualified Plan
Statement [Line Items]
Increase (decrease) in benefit obligation		200,000
Benefit obligation		$ 2,000,000	$ 2,200,000
Discount rate		4.77%	2.69%
United Kingdom
Statement [Line Items]
Increase (decrease) in benefit obligation		$ 3,900,000
Benefit obligation		$ 4,600,000
Discount rate		3.82%	1.86%
Pension Plan
Statement [Line Items]
Number of plans | plan		2
Benefit obligation		$ 134,303,000	$ 172,617,000	$ 184,190,000			$ 169,680,000
Actuarial (gain) loss		30,501,000	857,000	(17,309,000)
Annuity purchase amount released from plan assets					$ 11,400,000
Settlement credit			$ 100,000
Percentage of liability settled			8.53%
Expected employer contributions for current fiscal year		5,600,000
Expected future contributions for current fiscal year, after legislation		600,000
Employer contributions		2,517,000	$ 7,999,000	7,687,000
Fair value of common stock		3,800,000	5,600,000
Pension Plan | United States
Statement [Line Items]
Benefit obligation		100,580,000	124,633,000	138,131,000			126,380,000
Actuarial (gain) loss		$ 22,136,000	$ (104,000)	$ (13,016,000)
Discount rate		4.77%	2.69%	2.73%
Employer contributions		$ 1,523,000	$ 6,983,000	$ 6,753,000
Expected employer contribution for 2023		1,400,000
Pension Plan | United Kingdom
Statement [Line Items]
Benefit obligation		33,723,000	47,984,000	46,059,000			$ 43,300,000
Actuarial (gain) loss		$ 8,365,000	$ 961,000	$ (4,293,000)
Discount rate		3.82%	1.86%	1.59%
Employer contributions		$ 994,000	$ 1,016,000	$ 934,000
Expected employer contribution for 2023		800,000
Postemployment Retirement Benefits
Statement [Line Items]
Postretirement medical and life insurance benefit plan		1,200,000	$ 500,000	$ 100,000
Plan amendments		$ 5,600,000
Amortization of change due to amendment		5 years 11 months 15 days
Annual plan payment		$ 900,000
Current year payment, pro-rated as of effective date of change		$ 400,000
Maximum
Statement [Line Items]
Company's fixed contribution toward postretirement medical plan	$ 28.50
Maximum | Equities
Statement [Line Items]
Target allocations, as a percentage		70.00%
Maximum | Company Stock
Statement [Line Items]
Target allocations, as a percentage		20.00%
Maximum | Cash and Debt Securities
Statement [Line Items]
Target allocations, as a percentage		60.00%
Minimum
Statement [Line Items]
Company's fixed contribution toward postretirement medical plan	$ 23.00
Minimum | Equities
Statement [Line Items]
Target allocations, as a percentage		40.00%
Minimum | Company Stock
Statement [Line Items]
Target allocations, as a percentage		10.00%
Minimum | Cash and Debt Securities
Statement [Line Items]
Target allocations, as a percentage		30.00%