XML 55 R41.htm IDEA: XBRL DOCUMENT
v3.22.4

Share-Based Compensation (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2022
Share-Based Payment Arrangement [Abstract] |
Components of Share-Based Compensation Expense by Type of Award | The following table lists the components of share-based compensation expense by type of award.
| Years Ended December 31,
| 2022 |  | 2021 |  | 2020
Restricted stock | 3,635 |  |  | 2,166 |  |  | 3,393 |
Performance share units | 602 |  |  | 797 |  |  | 199 |
Stock options | $ | 140 |  |  | $ | 253 |  |  | $ | 634 |
Share-based compensation expense | $ | 4,377 |  |  | $ | 3,216 |  |  | $ | 4,226 |
Reconciliation of Restricted Stock Option Activity | The following table presents the status of unvested restricted stock awards as of December 31, 2022 and changes during the year then ended.
| Nonvested Restricted Shares |  | Weighted Average Grant-Date Fair Value
Unvested at January 1, 2022 | 469,000 |  |  | $ | 7.28 |
Granted | 897,000 |  |  | 3.31 |
Vested | (291,000) |  |  | 7.05 |
Forfeited | (37,000) |  |  | 3.93 |
Unvested at December 31, 2022 | 1,038,000 |  |  | $ | 4.03 |
Schedule of Performance Based Awards Goals with Respect to TSR and ROIC | The following tables present the goals with respect to TSR Awards and ROIC Awards granted in 2022, 2021, and 2020.
TSR Awards: | Threshold Performance (25% or 50% of Shares)(1) |  | Target Performance (100% of Shares) |  | Maximum Performance (150% of Shares)
2022 grants | 25 | th Percentile |  | 55 | th Percentile |  | 75 | th Percentile
2021 grants | 35 | th Percentile |  | 50 | th Percentile |  | 75 | th Percentile
2020 grants | 35 | th Percentile |  | 50 | th Percentile |  | 75 | th Percentile
ROIC Awards: | Threshold Performance (50% of Shares) |  | Target Performance (100% of Shares) |  | Maximum Performance (150% of Shares)
2022 grants | 6.4 | % |  | 8.6 | % |  | 10.0 | %
2021 grants | 6.3 | % |  | 7.0 | % |  | 8.6 | %
2020 grants | 6.7 | % |  | 7.9 | % |  | 8.7 | %
_______________________________ (1)Threshold performance will earn 25% of the target number of PSUs for the 2022 grants and 50% for the 2021 grants and 2020 grants.
Schedule of Number of Awards Granted and Grant Date Fair Value of Each Award in Periods | The following table presents the number of PSUs granted and the grant-date fair value of each award in the periods presented.
|  | TSR Awards |  | ROIC Awards
Award Year |  | Performance Units |  | Grant-Date Fair Value |  | Performance Units |  | Grant-Date Fair Value
2022 |  | 382,000 |  |  | $ | 2.53 |  |  | 408,000 |  |  | $ | 2.62 |
2021 |  | 142,000 |  |  | $ | 8.58 |  |  | 172,000 |  |  | $ | 7.20 |
2020 |  | 139,000 |  |  | $ | 10.88 |  |  | 157,000 |  |  | $ | 9.44 |
Summary of Status of Unvested PSU Awards | The following table presents the status of unvested PSUs as of December 31, 2022 and changes during the year then ended.
| Nonvested TSR Awards |  | Nonvested ROIC Awards
| Number of Performance Units |  | Weighted Average Grant-Date Fair Value |  | Number of Performance Units |  | Weighted Average Grant-Date Fair Value
Nonvested at January 1, 2022 | 194,000 |  |  | $ | 9.59 |  |  | 228,000 |  |  | $ | 8.14 |
Granted | 382,000 |  |  | 2.53 |  |  | 408,000 |  |  | 2.62 |
Expired | (84,000) |  |  | 10.88 |  |  | (96,000) |  |  | 9.44 |
Nonvested at December 31, 2022 | 492,000 |  |  | $ | 3.87 |  |  | 540,000 |  |  | $ | 3.74 |

X
- Definition Schedule Of Performance Unit Awards Based On Expected Performance [Table Text Block] + References No definition available. + Details
Name: | nnbr_ScheduleOfPerformanceUnitAwardsBasedOnExpectedPerformanceTableTextBlock
Namespace Prefix: | nnbr_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Tabular disclosure of share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_NonvestedRestrictedStockSharesActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the changes in outstanding nonvested performance-based units. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfNonvestedPerformanceBasedUnitsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of activity for outstanding award under share-based payment arrangement excluding share and unit options and nonvested award. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfOtherShareBasedCompensationActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration