XML 39 R13.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Deposits | 12 Months Ended
--- | ---
Dec. 31, 2018
Deposits [Abstract] |
Deposits |
5. | Deposits
Deposits consisted of the following:
| December 31,
(in thousands) | 2018 |  | 2017
Deposits – health insurance | $ | 6,200 |  |  | $ | 5,300 |
Deposits – workers’ compensation | 166,474 |  |  | 154,215 |
Deposits | $ | 172,674 |  |  | $ | 159,515 |
The contractual arrangement with United for health insurance coverage requires us to maintain an accumulated cash surplus in the plan of $9.0 million, which is reported as long-term prepaid health insurance. Please read Note 1, “Accounting Policies,” for a discussion of our accounting policies for health insurance costs and workers’ compensation costs.

X
- Definition Amounts transferred to third party health care and workers compensation insurance providers for security purposes that are expected to be returned or applied towards payment after one year or beyond the operating cycle, if longer. + References No definition available. + Details
Name: | nsp_DepositsTextBlock
Namespace Prefix: | nsp_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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