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Benefit Plans | 12 Months Ended
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Dec. 31, 2011
Benefit Plans [Abstract] |
BENEFIT PLANS | NOTE 12 – BENEFIT PLANS We have a 401(k) benefit plan that covers substantially all of our employees. The percent of our matching contributions to the 401(k) benefit plan is determined annually by the Board of Directors. Effective May 1, 2011 we reinstituted our matching contribution to the 401(k) benefit plan at 2% after having suspended matching contributions effective April 1, 2009. Effective January 1, 2012, we raised the matching contribution to 3%. The 401(k) benefit plan allows employee contributions up to 15% of their compensation, which can be matched at 100% of the first 5% of the compensation contributed up to a maximum matching contribution of $12,250. Matching contributions, if made, are immediately vested. Our 2011, 2010 and 2009 matching 401(k) contributions charged to expense were $160,000, $0 and $206,000, respectively. We have a deferred compensation plan in which all persons serving on the Board of Directors may defer all or portions of their annual retainer and meeting fees, with distributions to be paid upon termination of service as a director or specific dates selected by the director. The deferred amounts are categorized on our financial statements as other borrowed money. The deferred balances are paid interest at a rate equal to the Wall Street Journal Prime Rate, adjusted at the beginning of each calendar quarter. Interest expense for the plan during 2011, 2010 and 2009 was $17,000, $19,000 and $24,000, respectively. We have a non-qualified deferred compensation program in which selected officers may defer all or portions of salary and bonus payments. The deferred amounts are categorized on our financial statements as other borrowed money. The deferred balances are paid interest at a rate equal to the Wall Street Journal Prime Rate, adjusted at the beginning of each calendar quarter. Interest expense for the plan during 2011, 2010 and 2009 was $36,000, $40,000 and $51,000, respectively. The Mercantile Bank Corporation Employee Stock Purchase Plan of 2002 (“Stock Purchase Plan”) is a non-compensatory plan intended to encourage full- and part-time employees of Mercantile and its subsidiaries to promote our best interests and to align employees’ interests with the interests of our shareholders by permitting employees to purchase shares of our common stock through regular payroll deductions. Shares are purchased on the last business day of each calendar quarter at a price equal to the consolidated closing bid price of our common stock reported on The Nasdaq Stock Market. A total of 55,000 shares of common stock may be issued under the Stock Purchase Plan; however, the number of shares has been adjusted, and may continue to be adjusted in the future, to reflect stock dividends and other changes in our capitalization. The number of shares issued under the Stock Purchase Plan totaled 4,726 and 9,129 in 2011 and 2010, respectively. As of December 31, 2011, there were 7,440 shares available under the Stock Purchase Plan.

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