Retirement And Other Benefit Plans - Summary of Change in Projected Benefit Obligation and Fair Value of Plan Assets (Details) $ in Thousands	11 Months Ended	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2020 USD ($)
Projected Benefit Obligation
Benefit obligation, beginning balance	$ 78,579
Interest cost	1,007	$ 1,007
Net service cost	3,357	3,357
Employee contributions	571
Benefits paid	(925)
Actuarial loss, net	5,453
Unrealized loss on foreign exchange	8,670
Benefit obligation, ending balance	96,712	96,712
Fair Value of Plan Assets
Pension plan assets, beginning balance	49,914
Increase in plan asset value	5,887
Employer contributions	1,222
Employee contributions	571
Benefits and administrative expenses paid	(1,201)
Unrealized gain on foreign exchange	5,543
Pension plan assets, ending balance	61,936	61,936
Underfunded status of the plans at end of the year	34,776	34,776
Accumulated benefit obligation	$ 96,712	$ 96,712