BASIS OF PRESENTATION AND ACCOUNTING POLICIES	3 Months Ended
Mar. 31, 2013
Accounting Policies [Abstract]
Basis of Presentation and Significant Accounting Policies [Text Block]	1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES The unaudited consolidated financial statements include the accounts of MBT Financial Corp. (the “Company”) and its subsidiary, Monroe Bank & Trust (the “Bank”). The Bank includes the accounts of its wholly owned subsidiary, MB&T Financial Services, Inc. The Bank operates seventeen branches in Monroe County, Michigan, seven branches in Wayne County, Michigan, and a mortgage loan office in Monroe County. The Bank’s primary source of revenue is from providing loans to customers, who are predominantly small and middle-market businesses and middle-income individuals. The Company’s sole business segment is community banking. The accounting and reporting policies of the Bank conform to practice within the banking industry and are in accordance with accounting principles generally accepted in the United States. Preparation of financial statements in conformity with generally accepted accounting principles requires Management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant changes in the near term are the determination of the allowance for loan losses, the valuation of other real estate owned, the deferred tax asset valuation allowance, and the fair value of investment securities. The accompanying unaudited consolidated financial statements of the Company have been prepared in accordance with the instructions to Form 10-Q. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. However, such information reflects all adjustments (consisting of normal recurring adjustments), which are, in the opinion of Management, necessary for fair statement of results for the interim periods. The significant accounting policies are as follows: PRINCIPLES OF CONSOLIDATION The consolidated financial statements include the accounts of the Company and its subsidiary. All material intercompany transactions and balances have been eliminated. COMPREHENSIVE INCOME Accounting principles generally require that revenue, expenses, gains, and losses be included in net income. Certain changes in assets and liabilities, however, such as unrealized gains and losses on securities available for sale and amounts recognized related to postretirement benefit plans (gains and losses, prior service costs, and transition assets or obligations), are reported as a direct adjustment to the equity section of the balance sheet. Such items, along with net income, are components of comprehensive income. BUSINESS SEGMENTS While the Company's chief decision makers monitor the revenue streams of various products and services, operations are managed and financial performance is evaluated on a company wide basis. Accordingly, all of the Company’s operations are considered by management to be aggregated in one reportable segment. FAIR VALUE The Corporation measures or monitors many of its assets and liabilities on a fair value basis. Fair value is used on a recurring basis for assets and liabilities that are elected to be accounted for under The Fair Value Option as well as for certain assets and liabilities in which fair value is the primary basis of accounting. Examples of these include derivative instruments and available for sale securities. Additionally, fair value is used on a non-recurring basis to evaluate assets or liabilities for impairment or for disclosure purposes. Examples of these non-recurring uses of fair value include certain loans held for sale accounted for on a lower of cost or market basis. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Depending on the nature of the asset or liability, the Corporation uses various valuation techniques and assumptions when estimating fair value. The Corporation applied the following fair value hierarchy: Level 1 – Inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets. The Corporation’s mutual fund investments where quoted prices are available in an active market generally are classified within Level 1 of the fair value hierarchy. Level 2 – Inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument. The Corporation’s borrowed funds and investments in U.S. government agency securities, government sponsored mortgage backed securities, and obligations of states and political subdivisions are generally classified in Level 2 of the fair value hierarchy. Fair values for these instruments are estimated using pricing models, quoted prices of securities with similar characteristics, or discounted cash flows. Level 3 – Inputs to the valuation methodology are unobservable and significant to the fair value measurement. Private equity investments and trust preferred collateralized debt obligations are classified within Level 3 of the fair value hierarchy. Fair values are initially valued based on transaction price and are adjusted to reflect exit values. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at and/or marked to fair value, the Corporation considers the principal or most advantageous market in which it would transact and considers assumptions that market participants would use when pricing the asset or liability. When possible, the Corporation looks to active and observable markets to price identical assets or liabilities. When identical assets and liabilities are not traded in active markets, the Corporation looks to market observable data for similar assets or liabilities. Nevertheless, certain assets and liabilities are not actively traded in observable markets and the Corporation must use alternative valuation techniques to derive a fair value measurement. ACCOUNTING PRONOUNCEMENTS No recent accounting pronouncements are expected to have a significant impact on the Corporation’s financial statements.

BASIS OF PRESENTATION AND ACCOUNTING POLICIES

3 Months Ended

Mar. 31, 2013

Basis of Presentation and Significant Accounting Policies [Text Block]

1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES

The unaudited consolidated financial statements include the accounts of MBT Financial Corp. (the “Company”) and its subsidiary, Monroe Bank & Trust (the “Bank”). The Bank includes the accounts of its wholly owned subsidiary, MB&T Financial Services, Inc. The Bank operates seventeen branches in Monroe County, Michigan, seven branches in Wayne County, Michigan, and a mortgage loan office in Monroe County. The Bank’s primary source of revenue is from providing loans to customers, who are predominantly small and middle-market businesses and middle-income individuals. The Company’s sole business segment is community banking.

The accounting and reporting policies of the Bank conform to practice within the banking industry and are in accordance with accounting principles generally accepted in the United States. Preparation of financial statements in conformity with generally accepted accounting principles requires Management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant changes in the near term are the determination of the allowance for loan losses, the valuation of other real estate owned, the deferred tax asset valuation allowance, and the fair value of investment securities.

The accompanying unaudited consolidated financial statements of the Company have been prepared in accordance with the instructions to Form 10-Q. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. However, such information reflects all adjustments (consisting of normal recurring adjustments), which are, in the opinion of Management, necessary for fair statement of results for the interim periods.

The significant accounting policies are as follows:

PRINCIPLES OF CONSOLIDATION

The consolidated financial statements include the accounts of the Company and its subsidiary. All material intercompany transactions and balances have been eliminated.

COMPREHENSIVE INCOME

Accounting principles generally require that revenue, expenses, gains, and losses be included in net income. Certain changes in assets and liabilities, however, such as unrealized gains and losses on securities available for sale and amounts recognized related to postretirement benefit plans (gains and losses, prior service costs, and transition assets or obligations), are reported as a direct adjustment to the equity section of the balance sheet. Such items, along with net income, are components of comprehensive income.

BUSINESS SEGMENTS

While the Company's chief decision makers monitor the revenue streams of various products and services, operations are managed and financial performance is evaluated on a company wide basis. Accordingly, all of the Company’s operations are considered by management to be aggregated in one reportable segment.

FAIR VALUE

The Corporation measures or monitors many of its assets and liabilities on a fair value basis. Fair value is used on a recurring basis for assets and liabilities that are elected to be accounted for under The Fair Value Option as well as for certain assets and liabilities in which fair value is the primary basis of accounting. Examples of these include derivative instruments and available for sale securities. Additionally, fair value is used on a non-recurring basis to evaluate assets or liabilities for impairment or for disclosure purposes. Examples of these non-recurring uses of fair value include certain loans held for sale accounted for on a lower of cost or market basis. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Depending on the nature of the asset or liability, the Corporation uses various valuation techniques and assumptions when estimating fair value.

The Corporation applied the following fair value hierarchy:

Level 1 – Inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets. The Corporation’s mutual fund investments where quoted prices are available in an active market generally are classified within Level 1 of the fair value hierarchy.

Level 2 – Inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument. The Corporation’s borrowed funds and investments in U.S. government agency securities, government sponsored mortgage backed securities, and obligations of states and political subdivisions are generally classified in Level 2 of the fair value hierarchy. Fair values for these instruments are estimated using pricing models, quoted prices of securities with similar characteristics, or discounted cash flows.

Level 3 – Inputs to the valuation methodology are unobservable and significant to the fair value measurement. Private equity investments and trust preferred collateralized debt obligations are classified within Level 3 of the fair value hierarchy. Fair values are initially valued based on transaction price and are adjusted to reflect exit values.

When determining the fair value measurements for assets and liabilities required or permitted to be recorded at and/or marked to fair value, the Corporation considers the principal or most advantageous market in which it would transact and considers assumptions that market participants would use when pricing the asset or liability. When possible, the Corporation looks to active and observable markets to price identical assets or liabilities. When identical assets and liabilities are not traded in active markets, the Corporation looks to market observable data for similar assets or liabilities. Nevertheless, certain assets and liabilities are not actively traded in observable markets and the Corporation must use alternative valuation techniques to derive a fair value measurement.

ACCOUNTING PRONOUNCEMENTS

No recent accounting pronouncements are expected to have a significant impact on the Corporation’s financial statements.