Other than Temporary Impairment, Non-Credit Losses Recognized in Earnings, Losses on Debt Securities Held

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Other than Temporary Impairment Losses, Number of Investments

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Percentage of Heartland's Mortgage-backed Securities, Issued by US Government Sponsored Enterprises

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Amount of debt securities categorized neither as held-to-maturity nor trading.

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-Publisher FASB
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This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

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This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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The fair value of available-for-sale securities that serve as collateral for borrowings.

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Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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For any sales of securities categorized as held-to-maturity, this item represents the net carrying amount of the sold security.

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-Publisher FASB
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This item represents the gain (loss) realized on the sale of held-to-maturity securities disposed of during the period. Additionally, this item may include, if not separately presented, any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt securities which are being or have been recognized in earnings during the period.

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This item represents the gain (loss) realized on the sale of held-to-maturity securities disposed of during the period.

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The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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This item represents reductions in the amount of cumulative losses recognized in earnings for other than temporary impairments (OTTI) for which a portion of the impairment had been recognized in other comprehensive income (a component of shareholders' equity) due to a change in status of the impaired security because of a change in the entity's intent to either sell the impaired security or it has become more likely than not that the entity will be required to sell the security before recovery of its cost basis.

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The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting.

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The amount of other than temporary impairment losses on investments in debt and equity securities categorized as Available-for-sale which have been recognized in earnings during the period. Such impairment losses consist of other than temporary impairments (OTTI) on equity securities, credit losses on investments in debt securities, and when the entity intends to sell an impaired debt security or it is more likely than not that the entity will be required to sell the impaired debt security before recovery of its amortized cost basis.

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The amount of other than temporary impairment losses on investments in debt securities categorized as Held-to-maturity which have been recognized in earnings during the period. Such impairment losses consist of other than temporary impairments (OTTI) of investments in debt securities due to credit losses and other than temporary impairments due to other than credit losses when the entity intends to sell an impaired debt security or it is more likely than not that the entity will be required to sell the impaired debt security before recovery of its amortized cost basis.

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Securities (Narrative) (Details)	1 Months Ended	3 Months Ended		12 Months Ended
Securities (Narrative) (Details)	Mar. 31, 2012 USD ($) security	Sep. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($) security	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Other-than-temporary impairment	$ 184,000			$ 0	$ 237,000
Credit related OTTI				0	1,750,000	$ 981,000	$ 981,000
Securities pledged as collateral				810,600,000
Impairment loss on securities	$ 981,000			0	$ 769,000	0
Number of OTTI investments \| security	3				2
Held to maturity debt securities	$ 797,000				$ 716,000
Held to maturity securities sold, carrying value			$ 4,400,000
Loss on held to maturity securities sold				(89,000)
Gross security gains				0	0
Gross security losses				1,562,000	2,022,000	2,203,000
FHLB stock				14,400,000	14,300,000
Held-to-maturity Securities
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Credit related OTTI				0	1,500,000
Non-credit related OTTI				$ 0	40,000
Amount reclassified from non-credit OTTI to held to maturity					200,000
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Percent of mortgage-backed securities issued by government-sponsored entities				77.00%
Mortgage-backed securities
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Other-than-temporary impairment				$ 0	53,000	0
Held to maturity debt securities				0	$ 716,000	$ 0
Gain on held-to-maturity securities sold			89,000
Loss on held to maturity securities sold			$ 439,000	439,000
Carrying value of available for sale security sold				483,000
Gross security losses				$ 85,000
Obligations of states and political subdivisions
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Held to maturity securities sold, carrying value		$ 503,000
Loss on held to maturity securities sold		$ 1,500