The discount rate of trust preferred securities that represents the percentage of the face amount are discounted.

No definition available.

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- Definition

Amount of gain (loss) from the difference between the repurchase price of the trust preferred securities initially issued by the entity or its subsidiaries and the net carrying amount of the debt at the time of its repurchase.

+ References

No definition available.

+ Details

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- Definition

Represents the gain per diluted share on repurchase of trust preferred securities.

+ References

No definition available.

+ Details

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- Definition

The base point increase or decrease in capital ratio.

+ References

No definition available.

+ Details

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- Definition

The increase or decrease in the company's tangible book value per share.

+ References

No definition available.

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- Definition

The basis point increase or decrease in our tangible equity to tangible assets ratio.

+ References

No definition available.

+ Details

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- Definition

The basis point increase or decrease in the company's regulatory tier 1 capital and total risk-based capital ratios.

+ References

No definition available.

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- Definition

The maximum level of consolidated aggregate assets allowing for inclusion of trust preferred securities in Tier 1 Capital under the Dodd-Frank Act.

+ References

No definition available.

+ Details

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- Definition

The maximum amount of restricted core elements allowed in tier one capital expressed as a percent.

+ References

No definition available.

+ Details

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- References

No definition available.

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- Definition

The percentage of trust preferred securities face amount to be paid.

+ References

No definition available.

+ Details

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- Definition

Trust preferred securities possesses characteristics of both equity and debt issues and are generally issued by bank holding companies.

+ References

No definition available.

+ Details

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- Definition

Trust preferred securities held by the trust that are included in Tier One Capital and subject to certain limitations.

+ References

No definition available.

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- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

+ References

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

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- Definition

Amount of paid and unpaid cash dividends declared for classes of stock, for example, but not limited to, common and preferred.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 405
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817

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- Definition

Including the current and noncurrent portions, the carrying value of junior subordinated long-term debt owed to unconsolidated subsidiary trusts as of the balance sheet date. Such debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets and was initially scheduled to be repaid after one year or beyond the normal operating cycle if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

The cash outflow to reacquire preferred stocks issued by a business trust or other special purpose entity, mainly established by a bank holding entity, to third party investors. The trust's assets are deeply subordinated debentures of the bank holding entity. Most trust preferred securities are subject to a mandatory redemption upon the repayment of the debentures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585

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- Definition

Amount of dividends that can be declared or paid without approval of regulatory agency.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30
-Article 5

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Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30, 31
-Article 5

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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

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Note 21 - Regulatory Matters (Details) - USD ($)												12 Months Ended
Note 21 - Regulatory Matters (Details) - USD ($)	Mar. 23, 2016	Jan. 26, 2016	Jan. 14, 2016	Dec. 23, 2015	Oct. 15, 2015	Sep. 23, 2015	Jul. 16, 2015	Jun. 24, 2015	Apr. 16, 2015	Mar. 25, 2015	Jan. 15, 2015	Dec. 31, 2015	Jan. 25, 2016	Jan. 30, 2015	Dec. 31, 2014	Feb. 29, 2012	Dec. 31, 2009
Note 21 - Regulatory Matters (Details) [Line Items]
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval												$ 66,300,000
Common Stock, Dividends, Per Share, Cash Paid (in Dollars per share)				$ 0.15		$ 0.15		$ 0.14		$ 0.14
Common Stock, Dividends, Per Share, Declared (in Dollars per share)					$ 0.15		$ 0.15		$ 0.14		$ 0.14
Stock Repurchase Program, Authorized Amount														$ 20,000,000
Trust Preferred Securities Included in Tier One Capital												$ 53,100,000			$ 52,400,000
Maximum Restricted Core Element Allowed in Tier One Capital, Percent												25.00%
Maximum Level of Consolidated Aggregate Assets Allowing for Inclusion of Trust Preferred Securities in Tier One Capital																	$ 15,000,000,000
Preferred Securities of Subsidiary Trust												$ 53,100,000			52,400,000
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust												55,154,000			$ 54,472,000	$ 32,000,000
Mercantile Bank Capital Trust I [Member]
Note 21 - Regulatory Matters (Details) [Line Items]
Preferred Securities of Subsidiary Trust												$ 32,000,000,000
Scenario, Forecast [Member]
Note 21 - Regulatory Matters (Details) [Line Items]
Common Stock, Dividends, Per Share, Cash Paid (in Dollars per share)	$ 0.16
Subsequent Event [Member]
Note 21 - Regulatory Matters (Details) [Line Items]
Common Stock, Dividends, Per Share, Declared (in Dollars per share)			$ 0.16
Increase (Decrease) in Tangible Equity to Tangible Assets Ratio, Basis Point		0.09%
Increase (Decrease) in Tangible Book Value Per Share (in Dollars per share)		$ 0.11
Increase (Decrease) in Tier One Capital and Total Risk-based Capital Ratio, Basis Point		(0.35%)
Dividends, Cash		$ 9,100,000
Increase (Decrease) in Capital Ratio, Basis Point		(0.35%)
Subsequent Event [Member] \| Mercantile Bank Capital Trust I [Member]
Note 21 - Regulatory Matters (Details) [Line Items]
Preferred Securities of Subsidiary Trust		$ 32,000,000											$ 32,000,000
Payments for Repurchase of Trust Preferred Securities		11,000,000
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust		$ 21,000,000
Percentage of Trust Preferred Securities Face Amount Paid		73.00%
Discount Rate of Trust Preferred Securities		27.00%
Gain (Loss) on Repurchase of Trust Preferred Securities		$ 1,800,000
Gain (Loss) on Repurchase of Trust Preferred Securities, Per Diluted Share (in Dollars per share)		$ 0.11
Subsequent Event [Member] \| Mercantile Bank Capital Trust I [Member] \| Fund [Member]
Note 21 - Regulatory Matters (Details) [Line Items]
Preferred Securities of Subsidiary Trust		$ 11,000,000											$ 11,000,000
Repurchased Stock [Member]
Note 21 - Regulatory Matters (Details) [Line Items]
Stock Repurchased During Period, Shares (in Shares)												788,541
Stock Repurchased During Period, Value												$ 15,800,000