STOCK-BASED COMPENSATION PLANS AND STOCK OPTIONS	9 Months Ended
Sep. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
STOCK-BASED COMPENSATION PLANS AND STOCK OPTIONS	STOCK-BASED COMPENSATION PLANS AND STOCK OPTIONS The Company operates the following stock-based compensation plans as approved by the shareholders: the 1996 Stock Option Plan, the 1998 Stock Option Plan and the 2001 Stock Option Plan (collectively, SOPs) and the Banner Corporation 2012 Restricted Stock and Incentive Bonus Plan. In addition, during 2006 the Board of Directors approved the Banner Corporation Long-Term Incentive Plan, an account-based benefit plan which for reporting purposes is considered a stock appreciation rights plan. Restricted Stock Grants. Under the 2012 Restricted Stock Plan, which was approved on April 24, 2012, the Company is authorized to issue up to 300,000 shares of its common stock to provide a means for attracting and retaining highly skilled officers of Banner Corporation and its affiliates. Shares granted under the Plan have a minimum vesting period of three years. The Plan will continue in effect for a term of ten years, after which no further awards may be granted. Vesting requirements may include time-based conditions, performance-based conditions, or market-based conditions. The 2012 Restricted Stock Plan was amended on April 23, 2013 to provide for the ability to grant (1) cash-denominated incentive-based awards payable in cash or common stock, including those that are eligible to qualify as qualified performance-based compensation for the purposes of Section 162(m) of the Code and (2) restricted stock awards that qualify as qualified performance-based compensation for the purposes of Section 162(m) of the Code. As of September 30, 2013, the Company had granted 189,426 shares of restricted stock from the 2012 Restricted Stock Plan, of which 31,178 shares had vested and 158,248 shares remain unvested. Additionally, the Company granted shares of restricted common stock to Mark J. Grescovich, President and Chief Executive Officer of Banner Bank and Banner Corporation on August 22, 2010 and on August 23, 2011. The restricted shares were granted to Mr. Grescovich in accordance with his employment agreement, which, as an inducement material to his joining the Company and the Bank, provided for the granting of restricted shares on the six-month and the 18-month anniversaries of the effective date of the agreement. The shares vest in one-third annual increments over the subsequent three-year periods following the grants. A total of 34,257 shares were granted. As of September 30, 2013, 28,359 shares had vested and 5,898 shares remain unvested. The expense associated with all restricted stock grants was $482,000 and $1,004,000, respectively, for the three and nine-month periods ended September 30, 2013 and was $193,000 and $293,000, respectively, for the three and nine-month periods ended September 30, 2012. Unrecognized compensation expense for these awards as of September 30, 2013 was $3.7 million and will be amortized over the next 31 months. Stock Options. Under the SOPs, Banner reserved 2,284,186 shares for issuance pursuant to the exercise of stock options to be granted to directors and employees. Authority to grant additional options under the 1996 Stock Option Plan terminated on July 26, 2006. Authority to grant additional options under the 1998 Stock Option Plan terminated on July 24, 2008. Authority to grant additional options under the 2001 Stock Option Plan terminated on April 20, 2011. The exercise price of the stock options is set at 100% of the fair market value of the stock price on the date of grant. Options granted vest at a rate of 20% per year from the date of grant and any unexercised incentive stock options will expire ten years after date of grant or 90 days after employment or service ends. During the nine months ended September 30, 2013 and 2012, the Company did not grant any stock options. Additionally, there were no significant modifications made to any stock option grants during the period. The fair values of stock options granted are amortized as compensation expense on a straight-line basis over the vesting period of the grant. There was no stock-based compensation costs related to the SOPs for the quarters ended September 30, 2013 or September 30, 2012. For the nine months ended September 30, 2013 there were no stock based compensation costs related to the SOPs and for the nine months ended September 30, 2012 there was $6,000 in compensation costs related to the SOPs. The SOPs’ stock option grant compensation costs are generally based on the fair value calculated from the Black-Scholes option pricing on the date of the grant award. The Black-Scholes model assumes an expected stock price volatility based on the historical volatility at the date of the grant and an expected term based on the remaining contractual life of the vesting period. The Company bases the estimate of risk-free interest rate on the U.S. Treasury Constant Maturities Indices in effect at the time of the grant. The dividend yield is based on the current quarterly dividend in effect at the time of the grant. During the three and nine months ended September 30, 2013 and 2012, there were no exercises of stock options. Cash was not used to settle any equity instruments previously granted. The Company issues shares from authorized but unissued shares upon the exercise of stock options. The Company does not currently expect to repurchase shares from any source to satisfy such obligations under the SOPs. Banner Corporation Long-Term Incentive Plan: The Plan is an account-based type of benefit, the value of which is directly related to changes in the value of Company stock, dividends declared on the Company stock and changes in Banner Bank’s average earnings rate, and is considered a stock appreciation right (SAR). Each SAR entitles the holder to receive cash, upon vesting, equal to the excess of the fair market value of a share of the Company’s common stock on the date of exercise over the fair market value of such share on the date granted plus for some grants the dividends declared on the stock from the date of grant to the date of vesting. The primary objective of the Plan is to create a retention incentive by allowing officers who remain with the Company or the Banks for a sufficient period of time to share in the increases in the value of Company stock. The Company re-measures the fair value of SARs each reporting period until the award is settled and compensation expense is recognized each reporting period for changes in fair value and vesting. To adjust for a change in its estimated liability pursuant to the Plan, the Company recognized a compensation expense of $286,000 for the three months ended September 30, 2013 and a total compensation expense of $526,000 for the nine months ended September 30, 2013. During 2012, the Company recognized compensation expense of $105,000 and $181,000 for the three months and nine months ended September 30, 2012. At September 30, 2013, the aggregate liability related to SARs was $1,079,000 and was included in deferred compensation.

STOCK-BASED COMPENSATION PLANS AND STOCK OPTIONS

The Company operates the following stock-based compensation plans as approved by the shareholders: the 1996 Stock Option Plan, the 1998 Stock Option Plan and the 2001 Stock Option Plan (collectively, SOPs) and the Banner Corporation 2012 Restricted Stock and Incentive Bonus Plan. In addition, during 2006 the Board of Directors approved the Banner Corporation Long-Term Incentive Plan, an account-based benefit plan which for reporting purposes is considered a stock appreciation rights plan.

Restricted Stock Grants. Under the 2012 Restricted Stock Plan, which was approved on April 24, 2012, the Company is authorized to issue up to 300,000 shares of its common stock to provide a means for attracting and retaining highly skilled officers of Banner Corporation and its affiliates. Shares granted under the Plan have a minimum vesting period of three years. The Plan will continue in effect for a term of ten years, after which no further awards may be granted. Vesting requirements may include time-based conditions, performance-based conditions, or market-based conditions. The 2012 Restricted Stock Plan was amended on April 23, 2013 to provide for the ability to grant (1) cash-denominated incentive-based awards payable in cash or common stock, including those that are eligible to qualify as qualified performance-based compensation for the purposes of Section 162(m) of the Code and (2) restricted stock awards that qualify as qualified performance-based compensation for the purposes of Section 162(m) of the Code. As of September 30, 2013, the Company had granted 189,426 shares of restricted stock from the 2012 Restricted Stock Plan, of which 31,178 shares had vested and 158,248 shares remain unvested.

Additionally, the Company granted shares of restricted common stock to Mark J. Grescovich, President and Chief Executive Officer of Banner Bank and Banner Corporation on August 22, 2010 and on August 23, 2011. The restricted shares were granted to Mr. Grescovich in accordance with his employment agreement, which, as an inducement material to his joining the Company and the Bank, provided for the granting of restricted shares on the six-month and the 18-month anniversaries of the effective date of the agreement. The shares vest in one-third annual increments over the subsequent three-year periods following the grants. A total of 34,257 shares were granted. As of September 30, 2013, 28,359 shares had vested and 5,898 shares remain unvested.

The expense associated with all restricted stock grants was $482,000 and $1,004,000, respectively, for the three and nine-month periods ended September 30, 2013 and was $193,000 and $293,000, respectively, for the three and nine-month periods ended September 30, 2012. Unrecognized compensation expense for these awards as of September 30, 2013 was $3.7 million and will be amortized over the next 31 months.

Stock Options. Under the SOPs, Banner reserved 2,284,186 shares for issuance pursuant to the exercise of stock options to be granted to directors and employees. Authority to grant additional options under the 1996 Stock Option Plan terminated on July 26, 2006. Authority to grant additional options under the 1998 Stock Option Plan terminated on July 24, 2008. Authority to grant additional options under the 2001 Stock Option Plan terminated on April 20, 2011. The exercise price of the stock options is set at 100% of the fair market value of the stock price on the date of grant. Options granted vest at a rate of 20% per year from the date of grant and any unexercised incentive stock options will expire ten years after date of grant or 90 days after employment or service ends.

During the nine months ended September 30, 2013 and 2012, the Company did not grant any stock options. Additionally, there were no significant modifications made to any stock option grants during the period. The fair values of stock options granted are amortized as compensation expense on a straight-line basis over the vesting period of the grant. There was no stock-based compensation costs related to the SOPs for the quarters ended September 30, 2013 or September 30, 2012. For the nine months ended September 30, 2013 there were no stock based compensation costs related to the SOPs and for the nine months ended September 30, 2012 there was $6,000 in compensation costs related to the SOPs. The SOPs’ stock option grant compensation costs are generally based on the fair value calculated from the Black-Scholes option pricing on the date of the grant award. The Black-Scholes model assumes an expected stock price volatility based on the historical volatility at the date of the grant and an expected term based on the remaining contractual life of the vesting period. The Company bases the estimate of risk-free interest rate on the U.S. Treasury Constant Maturities Indices in effect at the time of the grant. The dividend yield is based on the current quarterly dividend in effect at the time of the grant.

During the three and nine months ended September 30, 2013 and 2012, there were no exercises of stock options. Cash was not used to settle any equity instruments previously granted. The Company issues shares from authorized but unissued shares upon the exercise of stock options. The Company does not currently expect to repurchase shares from any source to satisfy such obligations under the SOPs.

Banner Corporation Long-Term Incentive Plan: The Plan is an account-based type of benefit, the value of which is directly related to changes in the value of Company stock, dividends declared on the Company stock and changes in Banner Bank’s average earnings rate, and is considered a stock appreciation right (SAR). Each SAR entitles the holder to receive cash, upon vesting, equal to the excess of the fair market value of a share of the Company’s common stock on the date of exercise over the fair market value of such share on the date granted plus for some grants the dividends declared on the stock from the date of grant to the date of vesting. The primary objective of the Plan is to create a retention incentive by allowing officers who remain with the Company or the Banks for a sufficient period of time to share in the increases in the value of Company stock. The Company re-measures the fair value of SARs each reporting period until the award is settled and compensation expense is recognized each reporting period for changes in fair value and vesting. To adjust for a change in its estimated liability pursuant to the Plan, the Company recognized a compensation expense of $286,000 for the three months ended September 30, 2013 and a total compensation expense of $526,000 for the nine months ended September 30, 2013. During 2012, the Company recognized compensation expense of $105,000 and $181,000 for the three months and nine months ended September 30, 2012. At September 30, 2013, the aggregate liability related to SARs was $1,079,000 and was included in deferred compensation.