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Accounting Policies (Tables) | 9 Months Ended
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Sep. 30, 2019
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) | 2019 |  | 2018
Beginning balance, January 1, | $ | 229,639 |  |  | $ | 207,630 |
Accrued claims | 44,334 |  |  | 54,744 |
Present value discount | (3,664 | ) |  | (5,372 | )
Paid claims | (34,669 | ) |  | (31,645 | )
Ending balance | $ | 235,640 |  |  | $ | 225,357 |
Current portion of accrued claims | $ | 45,250 |  |  | $ | 42,258 |
Long-term portion of accrued claims | 190,390 |  |  | 183,099 |
Total accrued claims | $ | 235,640 |  |  | $ | 225,357 |
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) | 2019 | 2018 | % Change |  | 2019 | 2018 | % Change
Northeast | $ | 271,839 |  | $ | 237,076 |  | 14.7 | % |  | $ | 853,263 |  | $ | 748,717 |  | 14.0 | %
Southeast | 122,992 |  | 109,552 |  | 12.3 | % |  | 373,044 |  | 333,004 |  | 12.0 | %
Central | 180,602 |  | 155,184 |  | 16.4 | % |  | 555,797 |  | 476,277 |  | 16.7 | %
Southwest | 242,200 |  | 217,946 |  | 11.1 | % |  | 756,495 |  | 664,731 |  | 13.8 | %
West | 212,618 |  | 192,011 |  | 10.7 | % |  | 661,460 |  | 599,617 |  | 10.3 | %
| 1,030,251 |  | 911,769 |  | 13.0 | % |  | 3,200,059 |  | 2,822,346 |  | 13.4 | %
Other revenue | 13,137 |  | 13,357 |  | (1.6 | )% |  | 39,655 |  | 39,447 |  | 0.5 | %
Total revenue | $ | 1,043,388 |  | $ | 925,126 |  | 12.8 | % |  | $ | 3,239,714 |  | $ | 2,861,793 |  | 13.2 | %

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- Definition Disclosure of the incurred but not yet paid workers' compensation claims activities and balances. + References No definition available. + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
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