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Employee Benefit Plans | 12 Months Ended
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Dec. 31, 2012
Employee Benefit Plans [Abstract] |
Employee Benefit Plans | Note 9: Employee Benefit Plans 401(k) Plan The Company has a Retirement Accumulation Plan qualifying under IRS Code Section 401(k), in which NBI, NBB and NBFS are participating employers. Eligible participants may contribute up to 100% of their total annual compensation to the plan, subject to certain limits based on federal tax laws. Employee contributions are matched by the employer based on a percentage of an employee's total annual compensation contributed to the plan. For the years ended December 31, 2012, 2011 and 2010, the Company contributed $279, $279 and $277, respectively, to the plan. Employee Stock Ownership Plan The Company has a nonleveraged Employee Stock Ownership Plan (ESOP) which enables employees of NBI and its subsidiaries who have one year of service and who have attained the age of 21 prior to the plan's January 1 and July 1 enrollment dates to own NBI common stock. Contributions to the ESOP, which are not mandatory, are determined annually by the Board of Directors. Contribution expense amounted to $370, $420 and $350 in the years ended December 31, 2012, 2011 and 2010, respectively. Dividends on ESOP shares are charged to retained earnings. As of December 31, 2012, the number of shares held by the ESOP was 263,033. All shares held by the ESOP are treated as outstanding in computing the Company's basic net income per share. Upon reaching age 55 with ten years of plan participation, a vested participant has the right to diversify 50% of his or her allocated ESOP shares and NBI or the ESOP, with the agreement of the Trustee, is obligated to purchase those shares. The ESOP contains a put option which allows a withdrawing participant to require the Company or the ESOP, if the plan administrator agrees, to purchase his or her allocated shares if the shares are not readily tradable on an established market at the time of distribution. Salary Continuation Plan The Company has a Salary Continuation Plan for certain key officers. The plan provides the participating officers with supplemental retirement income, payable for the greater of 15 years after retirement or the officer's lifetime. The expense accrued for the plans in 2012, 2011, and 2010, based on the present value of the retirement benefits, amounted to $151, $197, and $216, respectively. The plan is unfunded. However bank-owned life insurance has been acquired on the life of the key employees in amounts sufficient to discharge the obligations of the agreement. Defined Benefit Plan The Company's defined benefit pension plan covers substantially all employees. The plan benefit formula is based upon the length of service of retired employees and a percentage of qualified W-2 compensation during their final years of employment. This resulted in a reduction in prior cost. Information pertaining to activity in the plan is as follows:
|  | December 31, |
|  | 2012 |  |  | 2011 |  |  | 2010 |
Change in benefit obligation |  |  |  |  |  |  |  |  |
Projected benefit obligation at beginning of year |  | $ | 15,808 |  |  | $ | 12,971 |  |  | $ | 11,598 |
Service cost |  |  | 468 |  |  |  | 435 |  |  |  | 400 |
Interest cost |  |  | 738 |  |  |  | 704 |  |  |  | 687 |
Actuarial loss |  |  | 1,554 |  |  |  | 2,001 |  |  |  | 958 |
Benefits paid |  |  | (514 | ) |  |  | (303 | ) |  |  | (672 | )
Projected benefit obligation at end of year |  | $ | 18,054 |  |  | $ | 15,808 |  |  | $ | 12,971 |
Change in plan assets |  |  |  |  |  |  |  |  |  |  |  |
Fair value of plan assets at beginning of year |  | $ | 13,326 |  |  | $ | 8,156 |  |  | $ | 7,461 |
Actual return on plan assets |  |  | 963 |  |  |  | 432 |  |  |  | 782 |
Employer contribution |  |  | 550 |  |  |  | 5,041 |  |  |  | 585 |
Benefits paid |  |  | (514 | ) |  |  | (303 | ) |  |  | (672 | )
Fair value of plan assets at end of year |  | $ | 14,325 |  |  | $ | 13,326 |  |  | $ | 8,156 |
Funded status at the end of the year |  | $ | (3,729 | ) |  | $ | (2,482 | ) |  | $ | (4,815 | )
Amounts recognized in the Balance Sheet |  |  |  |  |  |  |  |  |  |  |  |
Deferred tax asset |  | $ | 1,305 |  |  | $ | 869 |  |  | $ | 1,685 |
Other liabilities |  |  | (3,729 | ) |  |  | (2,482 | ) |  |  | (4,815 | )
Total amounts recognized in the Balance Sheet |  | $ | (2,424 | ) |  | $ | (1,613 | ) |  | $ | (3,130 | )
Amounts recognized in accumulated other comprehensive (loss), net |  |  |  |  |  |  |  |  |  |  |  |
Net (loss) |  | $ | (8,202 | ) |  | $ | (7,044 | ) |  | $ | (4,957 | )
Prior service cost |  |  | 879 |  |  |  | 979 |  |  |  | 1,080 |
Deferred tax asset |  |  | 2,563 |  |  |  | 2,123 |  |  |  | 1,357 |
Amount recognized |  | $ | (4,760 | ) |  | $ | (3,942 | ) |  | $ | (2,520 | )
Accrued/Prepaid benefit Cost, net |  |  |  |  |  |  |  |  |
Benefit obligation |  | $ | (18,054 | ) |  | $ | (15,808 | ) |  | $ | (12,971 | )
Fair value of assets |  |  | 14,325 |  |  |  | 13,326 |  |  |  | 8,156 |
Unrecognized net actuarial loss |  |  | 8,202 |  |  |  | 7,044 |  |  |  | 4,957 |
Unrecognized prior service cost |  |  | (879 | ) |  |  | (979 | ) |  |  | (1,080 | )
Deferred tax asset (liability) |  |  | (1,258 | ) |  |  | (1,254 | ) |  |  | 328 |
(Accrued)/Prepaid benefit cost included in other liabilities |  | $ | 2,336 |  |  | $ | 2,329 |  |  | $ | (610 | )
Components of net periodic benefit cost |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 468 |  |  | $ | 435 |  |  | $ | 400 |
Interest cost |  |  | 738 |  |  |  | 704 |  |  |  | 687 |
Expected return on plan assets |  |  | (1,075 | ) |  |  | (810 | ) |  |  | (607 | )
Amortization of prior service cost |  |  | (101 | ) |  |  | (101 | ) |  |  | (101 | )
Amortization of net obligation at transition |  |  | --- |  |  |  | --- |  |  |  | (11 | )
Recognized net actuarial loss |  |  | 508 |  |  |  | 292 |  |  |  | 246 |
Net periodic benefit cost |  | $ | 538 |  |  | $ | 520 |  |  | $ | 614 |
Other changes in plan assets and benefit obligations recognized in other comprehensive loss |  |  |  |  |  |  |  |  |  |  |  |
Net loss |  | $ | 1,157 |  |  | $ | 2,087 |  |  | $ | 536 |
Amortization of prior service cost |  |  | 101 |  |  |  | 101 |  |  |  | 101 |
Amortization of net obligation at transition |  |  | --- |  |  |  | --- |  |  |  | 11 |
Deferred income tax (benefit) |  |  | (440 | ) |  |  | (766 | ) |  |  | (227 | )
Total recognized |  | $ | 818 |  |  | $ | 1,422 |  |  | $ | 421 |
Total recognized in net periodic benefit cost and other comprehensive loss, net of income tax (benefit) |  | $ | 1,797 |  |  | $ | 2,708 |  |  | $ | 1,035 |
Weighted average assumptions at end of the year |  |  |  |  |  |  |  |  |  |  |  |
Discount rate used for net periodic pension cost |  |  | 4.50 | % |  |  | 5.50 | % |  |  | 6.00 | %
Discount rate used for disclosure |  |  | 3.75 | % |  |  | 4.50 | % |  |  | 5.50 | %
Expected return on plan assets |  |  | 8.00 | % |  |  | 8.00 | % |  |  | 8.00 | %
Rate of compensation increase |  |  | 3.00 | % |  |  | 3.00 | % |  |  | 4.00 | %
Long Term Rate of Return The Company, as plan sponsor, selects the expected long-term rate-of-return-on-assets assumption in consultation with its investment advisors and actuary. This rate is intended to reflect the average rate of earnings expected to be earned on the funds invested or to be invested to provide plan benefits. Historical performance is reviewed, especially with respect to real rates of return (net of inflation), for the major asset classes held or anticipated to be held by the trust, and for the trust itself. Undue weight is not given to recent experience, which may not continue over the measurement period, but higher significance is placed on current forecasts of future long-term economic conditions. Because assets are held in a qualified trust, anticipated returns are not reduced for taxes. Further, and solely for this purpose, the plan is assumed to continue in force and not terminate during the period during which assets are invested. However, consideration is given to the potential impact of current and future investment policy, cash flow into and out of the trust, and expenses (both investment and non-investment) typically paid from plan assets (to the extent such expenses are not explicitly estimated within periodic cost). The Company, as plan sponsor, has adopted a Pension Administrative Committee Policy (the Policy) for monitoring the investment management of its qualified plans. The Policy includes a statement of general investment principles and a listing of specific investment guidelines, to which the committee may make documented exceptions. The guidelines state that, unless otherwise indicated, all investments that are permitted under the Prudent Investor Rule shall be permissible investments for the defined benefit pension plan. All plan assets are to be invested in marketable securities. Certain investments are prohibited, including commodities and future contracts, private placements, repurchase agreements, options and derivatives. The Policy establishes quality standards for fixed income investments and mutual funds included in the pension plan trust. The Policy also outlines diversification standards. The preferred target allocation for the assets of the defined benefit pension plan is 65% in equity securities and 35% in fixed income securities. Equity securities include investments in large-cap and mid-cap companies primarily located in the United States, although a small number of international large-cap companies are included. There are also investments in mutual funds holding the equities of large-cap and mid-cap U.S. companies. Fixed income securities include U.S. government agency securities and corporate bonds from companies representing diversified industries. There are no investments in hedge funds, private equity funds or real estate. Fair value measurements of the pension plan's assets at December 31, 2012 follow:
|  |  | Fair Value Measurements at December 31, 2012
Asset Category |  |  | Total |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |
Cash |  | $ | 462 |  | $ | 462 |  | $ | --- |  | $ | --- |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |
U. S. companies |  |  | 6,470 |  |  | 6,470 |  |  | --- |  |  | --- |
International companies |  |  | 112 |  |  | 112 |  |  | --- |  |  | --- |
Equities mutual funds (1) |  |  | 1,411 |  |  | 1,411 |  |  | --- |  |  | --- |
U. S. government agencies and corporations |  |  | 366 |  |  | --- |  |  | 366 |  |  | --- |
State and political subdivisions |  |  | 435 |  |  | --- |  |  | 435 |  |  | --- |
Corporate bonds – investment grade (2) |  |  | 4,956 |  |  | --- |  |  | 4,956 |  |  | --- |
Corporate bonds – below investment grade (3) |  |  | 113 |  |  | --- |  |  | 113 |  |  | --- |
Total pension plan assets |  | $ | 14,325 |  | $ | 8,455 |  | $ | 5,870 |  | $ | --- |
(1) | This category comprises actively managed equity funds invested in large-cap and mid-cap U.S. companies.
(2) | This category represents investment grade bonds of U.S. issuers from diverse industries.
(3) | This category represents bonds from U.S. issuers from diverse industries that were purchased at investment grade, but which have fallen below investment grade.
|  |  | Fair Value Measurements at December 31, 2011
Asset Category |  |  | Total |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |
Cash |  | $ | 2,802 |  | $ | 2,802 |  | $ | --- |  | $ | --- |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |
U. S. companies |  |  | 4,793 |  |  | 4,793 |  |  | --- |  |  | --- |
International companies |  |  | 183 |  |  | 183 |  |  | --- |  |  | --- |
Equities mutual funds (1) |  |  | 1,228 |  |  | 1,228 |  |  | --- |  |  | --- |
U. S. government agencies and corporations |  |  | 510 |  |  | --- |  |  | 510 |  |  | --- |
State and political subdivisions |  |  | 418 |  |  | --- |  |  | 418 |  |  | --- |
Corporate bonds – investment grade (2) |  |  | 3,207 |  |  | --- |  |  | 3,207 |  |  | --- |
Corporate bonds – below investment grade (3) |  |  | 185 |  |  | --- |  |  | 185 |  |  | --- |
Total pension plan assets |  | $ | 13,326 |  | $ | 9,006 |  | $ | 4,320 |  | $ | --- |
(1) | This category comprises actively managed equity funds invested in large-cap and mid-cap U.S. companies.
(2) | This category represents investment grade bonds of U.S. issuers from diverse industries.
(3) | This category represents bonds from U.S. issuers from diverse industries that were purchased at investment grade, but which have fallen below investment grade.
The Company's required minimum pension contribution for 2013 has not yet been determined. Estimated future benefit payments, which reflect expected future service, as appropriate, are as follows:
2013 |  | $ | 3,438 |
2014 |  | $ | 934 |
2015 |  | $ | 609 |
2016 |  | $ | 1,272 |
2017 |  | $ | 1,562 |
2018 - 2022 |  | $ | 3,784 |

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This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Implementation Guide (Q and A) -Number FAS88 -Paragraph 63 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5, 6, 7, 8 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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