EMPLOYEE BENEFIT AND RETIREMENT PLANS - Status of Defined Benefit Plans (Details) - USD ($) $ in Thousands		5 Months Ended	7 Months Ended	12 Months Ended
Jun. 30, 2021	Jun. 30, 2021	Jan. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Change in benefit obligation
Benefit obligation at beginning of year				$ 37,400
Interest cost		$ 21	$ 120
Plan Settlement				0	$ 11,411	$ 0
Actuarial (gain) loss				(200)
Benefit obligation at end of year	$ 37,400	$ 37,400		$ 23,700	$ 37,400
Weighted average assumptions - benefit obligation
Discount rate	2.69%	2.69%	2.57%	4.77%	2.69%	2.73%
Change in plan assets
Plan Settlement				$ 0	$ (11,411)	$ 0
Components of net periodic benefit cost
Interest cost		$ 21	$ 120
Settlement (gain) recognized				0	$ 130	0
Amortization of net loss		97	97
Total expense		$ (481)	(46)
United Kingdom
Change in benefit obligation
Benefit obligation at end of year				$ 4,600
Weighted average assumptions - benefit obligation
Discount rate	1.86%	1.86%		3.82%	1.86%
Pension Plan
Change in benefit obligation
Benefit obligation at beginning of year			184,190	$ 172,617	$ 184,190	169,680
Interest cost				4,113	4,476	5,417
Plan Settlement	$ 11,411
Exchange rate changes				(4,985)	5,238	(1,013)
Benefits paid				(6,941)	(9,019)	(7,203)
Actuarial (gain) loss				(30,501)	(857)	17,309
Benefit obligation at end of year	172,617	$ 172,617		134,303	172,617	184,190
Change in plan assets
Actual return on plan assets				(15,941)	19,616	2,163
Employer contributions				2,517	7,999	7,687
Plan Settlement	(11,411)
Benefits paid				(6,941)	(9,019)	(7,203)
Exchange rate changes				(4,213)	4,181	(854)
Funded status at end of year	(37,425)	(37,425)		(23,689)	(37,425)	(60,364)
Amounts recognized in balance sheet
Current liability	(1,556)	(1,556)		(1,157)	(1,556)	(373)
Non-current liability	(35,869)	(35,869)		(22,532)	(35,869)	(59,991)
Net amount recognized in balance sheet	37,425	37,425		23,689	37,425	60,364
Amounts not yet reflected in net periodic benefit costs and included in accumulated other comprehensive loss
Accumulated loss	(3,685)	(3,685)		6,883	(3,685)	(19,115)
Amounts not yet recognized as a component of net periodic benefit cost	(3,685)	(3,685)		6,883	(3,685)	(19,115)
Accumulated net periodic benefit cost in excess of contributions	(33,740)	(33,740)		(30,572)	(33,740)	(41,249)
Net amount recognized in balance sheet	(37,425)	(37,425)		(23,689)	(37,425)	(60,364)
Components of net periodic benefit cost
Interest cost				4,113	4,476	5,417
Expected return on plan assets				(4,378)	(4,457)	(5,193)
Settlement (gain) recognized	130
Recognized actuarial loss				57	53	16,753
Total expense				(208)	(58)	16,977
Estimated amounts that will be amortized from accumulated other comprehensive loss over the next year
Net loss	(57)	(57)		(57)	(57)	(38)
Information for pension plans with accumulated benefits in excess of plan assets
Projected benefit obligation	172,617	172,617		134,303	172,617	184,190
Accumulated benefit obligation	172,617	172,617		134,303	172,617	184,190
Fair value of assets	135,192	135,192		110,614	135,192	123,826
Pension Plan \| United States
Change in benefit obligation
Benefit obligation at beginning of year			138,131	124,633	138,131	126,380
Interest cost				3,274	3,689	4,417
Plan Settlement				0	(11,411)	0
Benefits paid				(5,191)	(5,880)	(5,682)
Actuarial (gain) loss				(22,136)	104	13,016
Benefit obligation at end of year	$ 124,633	$ 124,633		$ 100,580	$ 124,633	$ 138,131
Weighted average assumptions - benefit obligation
Discount rate	2.69%	2.69%		4.77%	2.69%	2.73%
Change in plan assets
Actual return on plan assets				$ (10,633)	$ 18,864	$ 1,071
Employer contributions				1,523	6,983	6,753
Plan Settlement				0	(11,411)	0
Benefits paid				(5,191)	(5,880)	(5,682)
Funded status at end of year	$ (28,785)	$ (28,785)		(19,033)	(28,785)	(50,839)
Amounts recognized in balance sheet
Current liability	(1,556)	(1,556)		(1,157)	(1,556)	(373)
Non-current liability	(27,229)	(27,229)		(17,876)	(27,229)	(50,466)
Net amount recognized in balance sheet	28,785	28,785		$ 19,033	$ 28,785	$ 50,839
Weighted average assumptions – net periodic benefit cost
Discount rate				2.69%	2.73%	3.56%
Return on plan assets				3.56%	4.25%	5.00%
Amounts not yet reflected in net periodic benefit costs and included in accumulated other comprehensive loss
Accumulated loss	464	464		$ 8,650	$ 464	$ (14,507)
Amounts not yet recognized as a component of net periodic benefit cost	464	464		8,650	464	(14,507)
Accumulated net periodic benefit cost in excess of contributions	(29,249)	(29,249)		(27,683)	(29,249)	(36,332)
Net amount recognized in balance sheet	(28,785)	(28,785)		(19,033)	(28,785)	(50,839)
Components of net periodic benefit cost
Interest cost				3,274	3,689	4,417
Expected return on plan assets				(3,374)	(3,712)	(4,249)
Settlement (gain) recognized				0	(130)	0
Recognized actuarial loss				57	53	14,883
Total expense				(43)	(100)	15,051
Estimated amounts that will be amortized from accumulated other comprehensive loss over the next year
Net loss	(57)	(57)		(57)	(57)	(53)
Information for pension plans with accumulated benefits in excess of plan assets
Projected benefit obligation	124,633	124,633		100,580	124,633	138,131
Accumulated benefit obligation	124,633	124,633		100,580	124,633	138,131
Fair value of assets	95,848	95,848		81,547	95,848	87,292
Pension Plan \| United Kingdom
Change in benefit obligation
Benefit obligation at beginning of year			46,059	47,984	46,059	43,300
Interest cost				839	787	1,000
Exchange rate changes				(4,985)	5,238	(1,013)
Benefits paid				(1,750)	(3,139)	(1,521)
Actuarial (gain) loss				(8,365)	(961)	4,293
Benefit obligation at end of year	$ 47,984	$ 47,984		$ 33,723	$ 47,984	$ 46,059
Weighted average assumptions - benefit obligation
Discount rate	1.86%	1.86%		3.82%	1.86%	1.59%
Change in plan assets
Actual return on plan assets				$ (5,308)	$ 752	$ 1,092
Employer contributions				994	1,016	934
Benefits paid				(1,750)	(3,139)	(1,521)
Exchange rate changes				(4,212)	4,181	(854)
Funded status at end of year	$ (8,640)	$ (8,640)		(4,655)	(8,640)	(9,525)
Amounts recognized in balance sheet
Non-current liability	(8,640)	(8,640)		(4,655)	(8,640)	(9,525)
Net amount recognized in balance sheet	8,640	8,640		$ 4,655	$ 8,640	$ 9,525
Weighted average assumptions – net periodic benefit cost
Discount rate				1.86%	1.59%	2.39%
Return on plan assets				2.69%	1.88%	2.62%
Amounts not yet reflected in net periodic benefit costs and included in accumulated other comprehensive loss
Accumulated loss	(4,149)	(4,149)		$ (1,766)	$ (4,149)	$ (4,608)
Amounts not yet recognized as a component of net periodic benefit cost	(4,149)	(4,149)		(1,766)	(4,149)	(4,608)
Accumulated net periodic benefit cost in excess of contributions	(4,491)	(4,491)		(2,889)	(4,491)	(4,917)
Net amount recognized in balance sheet	(8,640)	(8,640)		(4,655)	(8,640)	(9,525)
Components of net periodic benefit cost
Interest cost				839	787	1,000
Expected return on plan assets				(1,004)	(745)	(944)
Amortization of net loss				0	0	1,870
Total expense				(165)	42	1,926
Information for pension plans with accumulated benefits in excess of plan assets
Projected benefit obligation	47,984	47,984		33,723	47,984	46,059
Accumulated benefit obligation	47,984	47,984		33,723	47,984	46,059
Fair value of assets	39,344	39,344		29,068	39,344	36,534
Pension Plan \| Change in Plan Assets
Change in plan assets
Fair value of plan assets at beginning of year			123,826	135,192	123,826	122,033
Fair value of plan assets at end of year	135,192	135,192		110,614	135,192	123,826
Pension Plan \| Change in Plan Assets \| United States
Change in plan assets
Fair value of plan assets at beginning of year			87,292	95,848	87,292	85,150
Fair value of plan assets at end of year	95,848	95,848		81,547	95,848	87,292
Pension Plan \| Change in Plan Assets \| United Kingdom
Change in plan assets
Fair value of plan assets at beginning of year			36,534	39,344	36,534
Fair value of plan assets at end of year	39,344	39,344		29,068	39,344	36,534
Pension Plan \| Debt Security, Corporate, US \| United Kingdom
Change in plan assets
Fair value of plan assets at beginning of year			$ 36,534	$ 39,344	36,534	36,883
Fair value of plan assets at end of year	$ 39,344	$ 39,344			$ 39,344	$ 36,534

Represents the accumulated net periodic benefit cost in excess of contributions.

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Return on planned assets.

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Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.

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Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

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Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses.

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Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.

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Amount of gain (loss), recognized immediately as component of net periodic benefit (cost) credit, for change in value of benefit obligation or plan assets from experience different from that assumed, change in actuarial assumption, or consequence of temporarily deviating from substantive plan. Includes, but is not limited to, amount in excess of 10 percent of greater of fair value of plan assets or benefit obligation.

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Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.

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Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans.

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Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

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Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan.

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Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.

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Amount of (increase) decrease to benefit obligation of defined benefit plan from remeasurement due to settlement. Excludes decrease to benefit obligation for settlement payment.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of contribution received by defined benefit plan from employer which increases plan assets.

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Amount included in accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan expected to be recognized in net periodic benefit (cost) credit for fiscal year following most recent annual statement of financial position.

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Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.

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