XML 52 R36.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Stock Based Compensation (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Weighted Average Assumptions Relevant to Determining the Fair Value at the Dates of Grant | The weighted average assumptions relevant to determining the fair value at the dates of grant are below:
|  | 2015 |  |  | 2014 |  |  | 2013 |
Term |  |  | 6 years |  |  |  | 6 years |  |  |  | 6 years |
Risk free interest rate |  |  | 1.43 | % |  |  | 1.75 | % |  |  | 0.87 | %
Dividend yield |  |  | 1.11 | % |  |  | 1.43 | % |  |  | 0.00 | %
Expected volatility |  |  | 59.22 | % |  |  | 56.75 | % |  |  | 57.00 | %
Expected forfeiture rate |  |  | 3.00 | % |  |  | 3.00 | % |  |  | 3.00 | %
Reconciliation of Option Activity | The following table provides a reconciliation of option activity for the year ended December 31, 2015:
Options |  | Shares (000’s) |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Term |  |  | Aggregate Intrinsic Value ($000) |
Outstanding at January 1, 2015 |  |  | 1,175 |  |  | $ | 11.40 |  |  |  |  |  |  |  |  |
Granted |  |  | 55 |  |  | $ | 25.16 |  |  |  |  |  |  |  |  |
Exercised |  |  | 179 |  |  | $ | 11.42 |  |  |  |  |  |  |  |  |
Forfeited or expired |  |  | (17 | ) |  | $ | 13.44 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2015 |  |  | 1,034 |  |  | $ | 12.09 |  |  |  | 5.8 |  |  | $ | 4,867 | (1)
Exercisable at December 31, 2015 |  |  | 832 |  |  | $ | 10.94 |  |  |  | 5.2 |  |  | $ | 556 | (1)
(1) | The intrinsic value is the amount by which the market price of our stock was greater than the exercise price of any individual option grant at December 31, 2015.
Schedule of Performance Based Awards Goals with Respect to TSR and ROIC | The following table establish the goals with respect to TSR and ROIC: TSR:
Threshold Performance (50% of Shares) |  | Target Performance (100% of Shares) |  | Maximum Performance (150% of Shares)
35th Percentile |  | 50th Percentile |  | 75th Percentile
ROIC:
Threshold Performance (35% of Shares) |  |  | Target Performance (100% of Shares) |  |  | Maximum Performance (150% of Shares) |
| 11 | % |  |  | 12.5 | % |  |  | 14 | %

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: | nonnum: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 the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardEmployeeStockPurchasePlanValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration