XML 36 R25.htm IDEA: XBRL DOCUMENT v3.25.2

Note 6 - Share-based Compensation (Tables)

6 Months Ended

Jun. 30, 2025

Notes Tables

Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

		Three Months Ended June 30,								Six Months Ended June 30,
		2025				2024				2025				2024
Cost of sales		$	275			$	363			$	581			$	715
Selling, general, and administrative expense			1,279				1,286				2,111				1,959
Total		$	1,554			$	1,649			$	2,692			$	2,674

Schedule of Unvested Restricted Stock Units and Performance Share Awards Activity [Table Text Block]

		Number of RSUs and PSAs (1)				Weighted-Average Grant Date Fair Value
Unvested RSUs and PSAs as of December 31, 2024			240,071			$	31.89
RSUs and PSAs granted			107,065				42.41
RSUs and PSAs vested (2)			(117,339	)			31.24
Unvested RSUs and PSAs as of June 30, 2025			229,797				37.12

X

- Definition

Tabular disclosure of the change in restricted stock units (RSUs) and performance share awards (PSAs).

+ References

No definition available.

+ Details

Name:	nwpx_ScheduleOfUnvestedRestrictedStockUnitsAndPerformanceShareAwardsActivityTableTextBlock
Namespace Prefix:	nwpx_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_TableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration