Capital Issuance and Redemption	9 Months Ended
Sep. 30, 2011
Capital Issuance and Redemption [Abstract]
Preferred Stock [Text Block]	On September 15, 2011, Heartland entered into a Securities Purchase Agreement ("Purchase Agreement") with the Secretary of the Treasury ("Treasury"), pursuant to which Heartland issued and sold to Treasury 81,698 shares of its Senior Non-Cumulative Perpetual Preferred Stock, Series C ("Series C Preferred Stock"), having a liquidation preference of $1,000 per share ("Liquidation Amount"), for aggregate proceeds of $81.7 million. The issuance was made pursuant to the Small Business Lending Fund ("SBLF"), a $30 billion fund established under the Small Business Jobs Act of 2010 that encourages lending to small businesses by providing capital to qualified community banks with assets of less than $10 billion. The Series C Preferred Stock qualifies as Tier 1 capital for Heartland. Non-cumulative dividends are payable quarterly on the Series C Preferred Stock, beginning October 1, 2011. The dividend rate is calculated as a percentage of the aggregate Liquidation Amount of the outstanding Series C Preferred Stock and is based on changes in the level of Qualified Small Business Lending or “QSBL” (as defined in the Purchase Agreement). Based upon Heartland's level of QSBL compared to the baseline level calculated under the terms of the Purchase Agreement, the dividend rate for the initial dividend period, which is from the date of issuance through September 30, 2011, has been set at 5%. For the 2nd through 10th calendar quarters, the annual dividend rate may be adjusted to between 1% and 5%, to reflect the amount of change in Heartland's level of QSBL. For the 11th calendar quarter through 4.5 years after issuance, the dividend rate will be fixed at between 1% and 7% based upon the increase in QSBL as compared to the baseline. After 4.5 years from issuance, the dividend rate will increase to 9% (including a quarterly lending incentive fee of 0.5%). The Series C Preferred Stock is non-voting, except in limited circumstances. In the event that Heartland misses five dividend payments, whether or not consecutive, the holder of the Series C Preferred Stock will have the right, but not the obligation, to appoint a representative as an observer on Heartland's Board of Directors. In the event that Heartland misses six dividend payments, whether or not consecutive, and if the then outstanding aggregate Liquidation Amount of the Series C Preferred Stock is at least $25.0 million, then the holder of the Series C Preferred Stock will have the right to designate two directors to the Board of Directors of Heartland. Heartland may redeem the shares of Series C Preferred Stock, in whole or in part, at any time at a redemption price equal to the sum of the Liquidation Amount per share and the per share amount of any unpaid dividends for the then-current period, subject to any required prior approval by Heartland's primary federal banking regulator. The terms of the Series C Preferred Stock impose limits on Heartland's ability to pay dividends on and repurchase shares of its common stock and other securities. In general, Heartland may declare and pay dividends on its common stock or any other stock junior to the Series C Preferred Stock, or repurchase shares of any such stock, only if after payment of such dividends or repurchase of such shares Heartland's Tier 1 Capital would be at least 90% of the Signing Date Tier 1 Capital (as defined and set forth in the Certificate of Designation), excluding any subsequent net charge-offs and any redemption of the Series C Preferred Stock (the “Tier 1 Dividend Threshold”). The Tier 1 Dividend Threshold is subject to reduction, beginning on the 2nd anniversary and ending on the 10th anniversary of issuance of the Series C Preferred Stock, by 10% for each one percent increase in Heartland's QSBL over the baseline level. If, however Heartland fails to declare and pay dividends on the Series C Preferred Stock in a given quarter, then during such quarter and for the next three quarters following such missed dividend payment Heartland may not pay dividends on or repurchase any common stock or any other securities that are junior to (or in parity with) the Series C Preferred Stock, except in very limited circumstances. If any Series C Preferred Stock remains outstanding on the 10th anniversary of issuance, Heartland may not pay any further dividends on its common stock or any other junior stock until the Series C Preferred Stock is redeemed in full. On September 15, 2011, Heartland entered into a letter agreement (“Repurchase Document”) with Treasury, pursuant to which, Heartland redeemed from Treasury, in part using the proceeds from the issuance of the Series C Preferred Stock, all 81,698 outstanding shares of its Fixed Rate Cumulative Perpetual Preferred Stock, Series B ("Series B Preferred Stock"), for a redemption price of $82.0 million, including accrued but unpaid dividends to the date of redemption. As a result of its redemption of the Series B Preferred Stock, Heartland is no longer subject to the limits provided for under the TARP Capital Purchase Program with respect to future executive compensation decisions and other matters. When the Series B Preferred Stock was issued, $6.3 million of the $81.7 million purchase price was assigned to the associated warrant and the remaining $75.4 million was assigned to the carrying value of the Series B Preferred Stock. The $6.3 million discount was being amortized over five years, the anticipated life of the Series B Preferred Stock. Upon redemption of the Series B Preferred Stock, $2.6 million of the remaining unamortized discount was recognized. On September 28, 2011, Heartland repurchased from Treasury a warrant to purchase 609,687 shares of Heartland common stock, $1.00 par value per share, at an exercise price of $20.10 per share (“Warrant”), issued to Treasury on December 19, 2008, in connection with participation in the TARP Capital Purchase Program. Heartland paid an aggregate purchase price of $1.8 million for the repurchase of the Warrant, which has been cancelled.

On September 15, 2011, Heartland entered into a Securities Purchase Agreement ("Purchase Agreement") with the Secretary of the Treasury ("Treasury"), pursuant to which Heartland issued and sold to Treasury 81,698 shares of its Senior Non-Cumulative Perpetual Preferred Stock, Series C ("Series C Preferred Stock"), having a liquidation preference of $1,000 per share ("Liquidation Amount"), for aggregate proceeds of $81.7 million. The issuance was made pursuant to the Small Business Lending Fund ("SBLF"), a $30 billion fund established under the Small Business Jobs Act of 2010 that encourages lending to small businesses by providing capital to qualified community banks with assets of less than $10 billion.

The Series C Preferred Stock qualifies as Tier 1 capital for Heartland. Non-cumulative dividends are payable quarterly on the Series C Preferred Stock, beginning October 1, 2011. The dividend rate is calculated as a percentage of the aggregate Liquidation Amount of the outstanding Series C Preferred Stock and is based on changes in the level of Qualified Small Business Lending or “QSBL” (as defined in the Purchase Agreement). Based upon Heartland's level of QSBL compared to the baseline level calculated under the terms of the Purchase Agreement, the dividend rate for the initial dividend period, which is from the date of issuance through September 30, 2011, has been set at 5%. For the 2nd through 10th calendar quarters, the annual dividend rate may be adjusted to between 1% and 5%, to reflect the amount of change in Heartland's level of QSBL. For the 11th calendar quarter through 4.5 years after issuance, the dividend rate will be fixed at between 1% and 7% based upon the increase in QSBL as compared to the baseline. After 4.5 years from issuance, the dividend rate will increase to 9% (including a quarterly lending incentive fee of 0.5%).

The Series C Preferred Stock is non-voting, except in limited circumstances. In the event that Heartland misses five dividend payments, whether or not consecutive, the holder of the Series C Preferred Stock will have the right, but not the obligation, to appoint a representative as an observer on Heartland's Board of Directors. In the event that Heartland misses six dividend payments, whether or not consecutive, and if the then outstanding aggregate Liquidation Amount of the Series C Preferred Stock is at least $25.0 million, then the holder of the Series C Preferred Stock will have the right to designate two directors to the Board of Directors of Heartland. Heartland may redeem the shares of Series C Preferred Stock, in whole or in part, at any time at a redemption price equal to the sum of the Liquidation Amount per share and the per share amount of any unpaid dividends for the then-current period, subject to any required prior approval by Heartland's primary federal banking regulator.

The terms of the Series C Preferred Stock impose limits on Heartland's ability to pay dividends on and repurchase shares of its common stock and other securities. In general, Heartland may declare and pay dividends on its common stock or any other stock junior to the Series C Preferred Stock, or repurchase shares of any such stock, only if after payment of such dividends or repurchase of such shares Heartland's Tier 1 Capital would be at least 90% of the Signing Date Tier 1 Capital (as defined and set forth in the Certificate of Designation), excluding any subsequent net charge-offs and any redemption of the Series C Preferred Stock (the “Tier 1 Dividend Threshold”). The Tier 1 Dividend Threshold is subject to reduction, beginning on the 2nd anniversary and ending on the 10th anniversary of issuance of the Series C Preferred Stock, by 10% for each one percent increase in Heartland's QSBL over the baseline level. If, however Heartland fails to declare and pay dividends on the Series C Preferred Stock in a given quarter, then during such quarter and for the next three quarters following such missed dividend payment Heartland may not pay dividends on or repurchase any common stock or any other securities that are junior to (or in parity with) the Series C Preferred Stock, except in very limited circumstances. If any Series C Preferred Stock remains outstanding on the 10th anniversary of issuance, Heartland may not pay any further dividends on its common stock or any other junior stock until the Series C Preferred Stock is redeemed in full.

On September 15, 2011, Heartland entered into a letter agreement (“Repurchase Document”) with Treasury, pursuant to which, Heartland redeemed from Treasury, in part using the proceeds from the issuance of the Series C Preferred Stock, all 81,698 outstanding shares of its Fixed Rate Cumulative Perpetual Preferred Stock, Series B ("Series B Preferred Stock"), for a redemption price of $82.0 million, including accrued but unpaid dividends to the date of redemption. As a result of its redemption of the Series B Preferred Stock, Heartland is no longer subject to the limits provided for under the TARP Capital Purchase Program with respect to future executive compensation decisions and other matters. When the Series B Preferred Stock was issued, $6.3 million of the $81.7 million purchase price was assigned to the associated warrant and the remaining $75.4 million was assigned to the carrying value of the Series B Preferred Stock. The $6.3 million discount was being amortized over five years, the anticipated life of the Series B Preferred Stock. Upon redemption of the Series B Preferred Stock, $2.6 million of the remaining unamortized discount was recognized.

On September 28, 2011, Heartland repurchased from Treasury a warrant to purchase 609,687 shares of Heartland common stock, $1.00 par value per share, at an exercise price of $20.10 per share (“Warrant”), issued to Treasury on December 19, 2008, in connection with participation in the TARP Capital Purchase Program. Heartland paid an aggregate purchase price of $1.8 million for the repurchase of the Warrant, which has been cancelled.