v3.26.1
Consolidated Statements of Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares
6 Months Ended
Jul. 05, 2026
Jun. 29, 2025
Regular dividends per share (in dollars per share)
$ 1
$ 1
X
- Definition
Represents the regular dividends per share paid.
+ References
No definition available.
+ Details
Name:
npk_RegularDividendsPerSharePaid
Namespace Prefix:
npk_
Data Type:
dtr-types:perShareItemType
Balance Type:
na
Period Type:
duration