Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

Accounting Policies [Abstract]

Disaggregation of Revenue [Table Text Block]

Our revenue for our PEO HR Outsourcing solutions by geographic region and for our other products and services offerings are as follows:

	Year Ended December 31,
(in thousands)	2021		2020		2019
Northeast	$	1,390,156	$	1,189,837	$	1,135,771
Southeast	630,342		509,846		499,201
Central	867,914		761,905		743,514
Southwest	993,747		935,634		1,001,845
West	1,033,996		839,347		880,434
	4,916,155		4,236,569		4,260,765
Other revenue	56,915		50,435		54,039
Total revenue	$	4,973,070	$	4,287,004	$	4,314,804

Property, Plant and Equipment [Table Text Block]

Property and equipment, net consisted of the following:

(in thousands)	December 31, 2021		December 31, 2020
Land	$	6,215	$	6,215
Buildings and improvements	206,449		125,704
Computer hardware and software	136,346		129,213
Software development costs	112,433		100,762
Furniture, fixtures and other	51,552		48,516
Construction in progress(1)	—		84,668
	512,995		495,078
Accumulated depreciation and amortization	(302,272)		(278,822)
Property and equipment, net	$	210,723	$	216,256

^[1]

Estimated Useful Lives of Property and Equipment

The estimated useful lives of property and equipment for purposes of computing depreciation are as follows:

	Useful Life
Buildings and improvements	5	—	30	years
Computer hardware and software	2	—	5	years
Software development costs	3	—	5	years
Furniture, fixtures and other	5	—	7	years

Activity and Balances Related to Incurred But Not Paid Worker's Compensation Claims

The following table provides the activity and balances related to incurred but not paid workers’ compensation claims:

	Year Ended December 31,
(in thousands)	2021		2020
Beginning balance	$	240,761	$	242,904
Accrued claims	48,097		42,639
Present value discount, net of accretion	(898)		740
Paid claims	(48,337)		(45,522)
Ending balance	$	239,623	$	240,761
Current portion of accrued claims	$	46,929	$	45,522
Long-term portion of accrued claims	192,694		195,239
Total accrued claims	$	239,623	$	240,761

[1] Construction in progress in 2020 was related to our corporate office expansion.