XML 46 R18.htm IDEA: XBRL DOCUMENT
v3.19.2

Accounting Policies (Tables) | 6 Months Ended
--- | ---
Jun. 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:
| Six Months Ended June 30,
(in thousands) | 2019 |  | 2018
Beginning balance, January 1, | $ | 229,639 |  |  | $ | 207,630 |
Accrued claims | 27,299 |  |  | 33,260 |
Present value discount | (2,703 | ) |  | (3,360 | )
Paid claims | (22,727 | ) |  | (21,686 | )
Ending balance | $ | 231,508 |  |  | $ | 215,844 |
Current portion of accrued claims | $ | 43,267 |  |  | $ | 41,827 |
Long-term portion of accrued claims | 188,241 |  |  | 174,017 |
Total accrued claims | $ | 231,508 |  |  | $ | 215,844 |
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 June 30, |  | Six Months Ended June 30,
(in thousands) | 2019 | 2018 | % Change |  | 2019 | 2018 | % Change
Northeast | $ | 270,475 |  | $ | 239,278 |  | 13.0 | % |  | $ | 581,422 |  | $ | 511,642 |  | 13.6 | %
Southeast | 120,148 |  | 108,264 |  | 11.0 | % |  | 250,054 |  | 223,452 |  | 11.9 | %
Central | 179,443 |  | 153,025 |  | 17.3 | % |  | 375,196 |  | 321,092 |  | 16.8 | %
Southwest | 244,462 |  | 213,920 |  | 14.3 | % |  | 514,294 |  | 446,785 |  | 15.1 | %
West | 215,639 |  | 194,986 |  | 10.6 | % |  | 448,842 |  | 407,605 |  | 10.1 | %
| 1,030,167 |  | 909,473 |  | 13.3 | % |  | 2,169,808 |  | 1,910,576 |  | 13.6 | %
Other revenue | 13,149 |  | 12,822 |  | 2.6 | % |  | 26,518 |  | 26,091 |  | 1.6 | %
Total revenue | $ | 1,043,316 |  | $ | 922,295 |  | 13.1 | % |  | $ | 2,196,326 |  | $ | 1,936,667 |  | 13.4 | %

X
- Definition Disclosure of the incurred but not yet paid workers' compensation claims activities and balances. + References No definition available. + Details
Name: | nsp_ScheduleOfAccruedWorkersCompensationClaimsTableTextBlock
Namespace Prefix: | nsp_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_DisaggregationOfRevenueTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration