Basis of Presentation (Policies)	3 Months Ended
Mar. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Effect of New Financial Accounting Standards	Effect of New Financial Accounting Standards In July 2012, the FASB issued ASU No. 2012-02, "Testing Indefinite-Lived Intangible Assets for Impairment," which permits an entity to make a qualitative assessment to determine whether it is more likely than not that an indefinite-lived intangible asset, other than goodwill, is impaired. Currently, entities are required to quantitatively test indefinite-lived intangible assets for impairment at least annually and more frequently if indicators of impairment exist. Under the new standard, if an entity concludes, based on an evaluation of all relevant qualitative factors, that it is not more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying amount, it will not be required to perform the quantitative impairment test for that asset. Heartland adopted this standard on January 1, 2013, and the adoption did not have an impact on the results of operations, financial position and liquidity. In September 2012, the FASB issued ASU No. 2012-06, "Subsequent Accounting for an Indemnification Asset Recognized at the Acquisition Date as a Result of a Government-Assisted Acquisition of a Financial Institution," to address diversity in practice about how to subsequently measure an indemnification asset for a government-assisted acquisition that includes a loss-sharing agreement. This guidance requires a reporting entity to account for a change in the subsequent measurement of the indemnification asset on the same basis as the changes in the asset subject to indemnification. Heartland adopted this standard on January 1, 2013, and the adoption did not have a material impact on the accounting for its loss share receivable from the FDIC under its various loss share agreements. In February 2013, the FASB issued ASU No. 2013-02, "Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income," to address further disclosure of reclassification amounts out of other comprehensive income. The guidance requires that a reporting entity present, either in a single note or parenthetically on the face of the financial statements, the effect of significant amounts reclassified from each component of accumulated other comprehensive income based on its source and income statement line items affected by the reclassification. Heartland adopted this standard on January 1, 2013, and the adoption did not have an impact on the results of operations, financial position and liquidity.

Effect of New Financial Accounting Standards

In July 2012, the FASB issued ASU No. 2012-02, "Testing Indefinite-Lived Intangible Assets for Impairment," which permits an entity to make a qualitative assessment to determine whether it is more likely than not that an indefinite-lived intangible asset, other than goodwill, is impaired. Currently, entities are required to quantitatively test indefinite-lived intangible assets for impairment at least annually and more frequently if indicators of impairment exist. Under the new standard, if an entity concludes, based on an evaluation of all relevant qualitative factors, that it is not more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying amount, it will not be required to perform the quantitative impairment test for that asset. Heartland adopted this standard on January 1, 2013, and the adoption did not have an impact on the results of operations, financial position and liquidity.

In September 2012, the FASB issued ASU No. 2012-06, "Subsequent Accounting for an Indemnification Asset Recognized at the Acquisition Date as a Result of a Government-Assisted Acquisition of a Financial Institution," to address diversity in practice about how to subsequently measure an indemnification asset for a government-assisted acquisition that includes a loss-sharing agreement. This guidance requires a reporting entity to account for a change in the subsequent measurement of the indemnification asset on the same basis as the changes in the asset subject to indemnification. Heartland adopted this standard on January 1, 2013, and the adoption did not have a material impact on the accounting for its loss share receivable from the FDIC under its various loss share agreements.

In February 2013, the FASB issued ASU No. 2013-02, "Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income," to address further disclosure of reclassification amounts out of other comprehensive income. The guidance requires that a reporting entity present, either in a single note or parenthetically on the face of the financial statements, the effect of significant amounts reclassified from each component of accumulated other comprehensive income based on its source and income statement line items affected by the reclassification. Heartland adopted this standard on January 1, 2013, and the adoption did not have an impact on the results of operations, financial position and liquidity.