Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2018

Accounting Policies [Abstract]

Activity and balances related to incurred but not paid workers' compensation claims

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

	Nine Months Ended September 30,
(in thousands)	2018			2017
Beginning balance, January 1,	$	207,630		$	183,928
Accrued claims	54,744			52,133
Present value discount	(5,372		)	(3,048		)
Paid claims	(31,645		)	(29,574		)
Ending balance	$	225,357		$	203,439
Current portion of accrued claims	$	42,258		$	41,748
Long-term portion of accrued claims	183,099			161,691
Total accrued claims	$	225,357		$	203,439

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:

	Three Months Ended September 30,						Nine Months Ended September 30,
(in thousands)	2018		2017		% Change		2018		2017		% Change
Northeast	$	237,076	$	204,318	16.0	%	$	748,717	$	644,703	16.1	%
Southeast	109,552		92,646		18.2	%	333,004		283,501		17.5	%
Central	155,184		131,978		17.6	%	476,277		405,854		17.4	%
Southwest	217,946		184,572		18.1	%	664,731		573,773		15.9	%
West	192,011		169,321		13.4	%	599,617		527,217		13.7	%
	911,769		782,835		16.5	%	2,822,346		2,435,048		15.9	%
Other revenue	13,357		12,678		5.4	%	39,447		38,681		2.0	%
Total revenue	$	925,126	$	795,513	16.3	%	$	2,861,793	$	2,473,729	15.7	%