- DefinitionTabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. Includes current and non-current inventory balances.
| Name: |
nwpx_ScheduleOfInventoryCurrentAndNonCurrentTableTextBlock |
| Namespace Prefix: |
nwpx_ |
| Data Type: |
dtr-types:textBlockItemType |
| Balance Type: |
na |
| Period Type: |
duration |