Heartland Financial USA (HTLF) 10-Q 7 Nov 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2014	Nov. 05, 2014
Document Information [Line Items]	'	'
Entity Registrant Name	'HEARTLAND FINANCIAL USA INC	'
Entity Central Index Key	'0000920112	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Accelerated Filer	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Amendment Flag	'false	'
Entity Common Stock, Shares Outstanding	'	18,479,869

Consolidated_Balance_Sheets_Un

Consolidated Balance Sheets (Unaudited) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
ASSETS	'	'
Cash and due from banks	$63,400	$118,441
Federal funds sold and other short-term investments	4,436	6,829
Cash and cash equivalents	67,836	125,270
Time deposits in other financial institutions	2,605	3,355
Securities:	'	'
Trading, at fair value	0	1,801
Available for sale, at fair value (cost of $1,366,069 at September 30, 2014, and $1,659,456 at December 31, 2013)	1,369,703	1,633,902
Held to maturity, at cost (fair value of $266,641 at September 30, 2014, and $237,437 at December 31, 2013)	255,312	237,498
Other investments, at cost	20,514	21,843
Loans held for sale	93,054	46,665
Loans and leases receivable:	'	'
Held to maturity	3,798,305	3,496,952
Loans covered by loss share agreements	3,850	5,749
Allowance for loan and lease losses	-41,698	-41,685
Loans and leases receivable, net	3,760,457	3,461,016
Premises, furniture and equipment, net	132,240	135,714
Other real estate, net	20,475	29,852
Goodwill	35,583	35,583
Other intangible assets, net	33,399	32,959
Cash surrender value on life insurance	82,224	81,110
FDIC indemnification asset	83	249
Other assets	61,324	76,899
TOTAL ASSETS	5,934,809	5,923,716
Deposits:	'	'
Demand	1,274,439	1,238,581
Savings	2,599,850	2,535,242
Time	852,430	892,676
Total deposits	4,726,719	4,666,499
Short-term borrowings	348,305	408,756
Other borrowings	334,513	350,109
Accrued expenses and other liabilities	41,873	58,892
TOTAL LIABILITIES	5,451,410	5,484,256
STOCKHOLDERS' EQUITY:	'	'
Common stock (par value $1 per share; authorized 25,000,000 shares; issued 18,477,463 shares at September 30, 2014 and 18,399,156 shares at December 31, 2013)	18,477	18,399
Capital surplus	94,393	91,632
Retained earnings	288,555	265,067
Accumulated other comprehensive income (loss)	276	-17,336
Treasury stock at cost (0 shares outstanding at both September 30, 2014 and December 31, 2013)	0	0
TOTAL STOCKHOLDERS' EQUITY	483,399	439,460
TOTAL LIABILITIES AND EQUITY	5,934,809	5,923,716
Preferred Stock [Member]	'	'
STOCKHOLDERS' EQUITY:	'	'
Preferred stock	0	0
Series A Preferred Stock [Member]	'	'
STOCKHOLDERS' EQUITY:	'	'
Preferred stock	0	0
Series C Preferred Stock [Member]	'	'
STOCKHOLDERS' EQUITY:	'	'
Preferred stock	$81,698	$81,698

Consolidated_Balance_Sheet_Una

Consolidated Balance Sheet (Unaudited) (Parentheticals) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Cost of available for sale securities	$1,366,069,000	$1,659,456,000
Estimated Fair Value	266,641,000	237,437,000
Common stock, par value (in dollars per share)	$1	$1
Common stock, shares authorized	25,000,000	25,000,000
Common stock, shares issued	18,477,463	18,399,156
Treasury stock shares	0	0
Preferred Stock [Member]	'	'
Preferred stock, par value (in dollars per share)	$1	$1
Preferred stock, shares authorized	20,604	20,604
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Series A Preferred Stock [Member]	'	'
Preferred stock, par value (in dollars per share)	$1	$1
Preferred stock, shares authorized	16,000	16,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Series C Preferred Stock [Member]	'	'
Preferred stock, par value (in dollars per share)	$1	$1
Preferred stock, shares authorized	81,698	81,698
Preferred stock, shares issued	81,698	81,698
Preferred stock, shares outstanding	81,698	81,698
Preferred stock, liquidation value	$81,700,000	$81,700,000

Consolidated_Statements_of_Inc

Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
INTEREST INCOME:	'	'	'	'
Interest and fees on loans and leases	$49,311	$40,154	$143,796	$119,707
Interest on securities:	'	'	'	'
Taxable	7,547	4,803	22,755	14,174
Nontaxable	3,249	3,443	10,079	10,001
Interest on federal funds sold	1	0	1	0
Interest on interest bearing deposits in other financial institutions	6	3	20	9
TOTAL INTEREST INCOME	60,114	48,403	176,651	143,891
INTEREST EXPENSE:	'	'	'	'
Interest on deposits	4,655	4,769	14,010	14,911
Interest on short-term borrowings	227	131	655	387
Interest on other borrowings (includes $577 and $523 of interest expense related to derivatives reclassified from accumulated other comprehensive income (loss) for the three months ended September 30, 2014 and 2013, respectively, and $1,671 and $1,552 of interest expense related to derivatives reclassified from accumulated other comprehensive income (loss) for the nine months ended September 30, 2014 and 2013, respectively)	3,741	3,623	11,084	11,122
TOTAL INTEREST EXPENSE	8,623	8,523	25,749	26,420
NET INTEREST INCOME	51,491	39,880	150,902	117,471
Provision for loan and lease losses	2,553	5,149	11,635	7,648
NET INTEREST INCOME AFTER PROVISION FOR LOAN AND LEASE LOSSES	48,938	34,731	139,267	109,823
NONINTEREST INCOME:	'	'	'	'
Service charges and fees	4,857	4,487	15,007	12,775
Loan servicing income	1,319	598	4,223	865
Trust fees	3,194	2,918	9,747	8,764
Brokerage and insurance commissions	1,044	1,277	3,325	3,315
Securities gains, net (includes $825 and $1,118 of net security gains reclassified from accumulated other comprehensive income (loss) for the three months ended September 30, 2014 and 2013, respectively, and $2,460 and $6,612 of net security gains reclassified from accumulated other comprehensive income (loss) for the nine months ended September 30, 2014 and 2013, respectively.)	825	1,118	2,460	6,612
Gain (loss) on trading account securities	0	263	-38	839
Gains on sale of loans held for sale	8,384	8,637	23,559	34,842
Loss on sales/valuations of other real estate and repossessed assets, net	-444	-339	-1,365	-2,440
Valuation adjustment on mortgage servicing rights	0	0	0	496
Income on bank owned life insurance	371	409	1,073	1,129
Other noninterest income	612	1,011	1,635	2,407
TOTAL NONINTEREST INCOME	20,162	20,379	59,626	69,604
NONINTEREST EXPENSES:	'	'	'	'
Salaries and employee benefits	33,546	28,847	98,428	88,103
Occupancy	3,807	3,387	11,841	9,796
Furniture and equipment	2,033	1,917	6,008	6,033
Professional fees	4,429	4,486	13,169	12,262
FDIC insurance assessments	888	745	2,848	2,508
Advertising	1,383	1,360	4,082	3,836
Intangible assets amortization	521	196	1,736	594
Other real estate and loan collection expenses	215	730	1,785	2,446
Other noninterest expenses	7,389	5,140	20,590	14,642
TOTAL NONINTEREST EXPENSES	54,211	46,808	160,487	140,220
INCOME BEFORE INCOME TAXES	14,889	8,302	38,406	39,207
Income taxes (includes $93 and $222 of income tax expense reclassified from accumulated other comprehensive income (loss) for the three months ended September 30, 2014 and 2013, respectively, and $296 and $1,887 of income tax expense reclassified from accumulated other comprehensive income (loss) for the nine months ended September 30, 2014 and 2013, respectively)	2,916	1,492	8,769	10,289
NET INCOME	11,973	6,810	29,637	28,918
Net income available to noncontrolling interest, net of tax	0	0	0	-64
NET INCOME ATTRIBUTABLE TO HEARTLAND	11,973	6,810	29,637	28,854
Preferred dividends and discount	-205	-276	-613	-889
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$11,768	$6,534	$29,024	$27,965
EARNINGS PER COMMON SHARE - BASIC (in dollars per share)	$0.64	$0.39	$1.57	$1.65
EARNINGS PER COMMON SHARE - DILUTED (in dollars per share)	$0.63	$0.38	$1.55	$1.63
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$0.10	$0.10	$0.30	$0.30

Consolidated_Statements_of_Inc1

Consolidated Statements of Income (Unaudited) (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Interest on other borrowings	$3,741	$3,623	$11,084	$11,122
Securities gains, net	825	1,118	2,460	6,612
Income taxes	2,916	1,492	8,769	10,289
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Gain (Loss) from Derivatives [Member]	'	'	'	'
Interest on other borrowings	577	523	1,671	1,552
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]	'	'	'	'
Securities gains, net	825	1,118	2,460	6,612
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Other Comprehensive Income (Loss) [Member]	'	'	'	'
Income taxes	$93	$222	$296	$1,887

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
NET INCOME	$11,973	$6,810	$29,637	$28,918
Securities:	'	'	'	'
Net change in unrealized gain (loss) on securities	-144	-4,857	30,538	-44,394
Reclassification adjustment for net gain realized in net income	-825	-1,118	-2,460	-6,612
Net change in non-credit related other than temporary impairment	24	24	72	72
Income taxes	372	2,229	-11,110	19,036
Other comprehensive income (loss) on securities	-573	-3,722	17,040	-31,898
Derivatives used in cash flow hedging relationships:	'	'	'	'
Net change in unrealized gain (loss) on derivatives	317	-366	-758	733
Reclassification adjustment for net loss on derivatives realized in net income	577	523	1,671	1,552
Income taxes	-334	-54	-341	-847
Other comprehensive income on cash flow hedges	560	103	572	1,438
Other comprehensive income (loss)	-13	-3,619	17,612	-30,460
Comprehensive income (loss)	11,960	3,191	47,249	-1,542
Less: comprehensive income attributable to noncontrolling interest	0	0	0	-64
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO HEARTLAND	$11,960	$3,191	$47,249	($1,606)

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:	'	'
Net income	$29,637	$28,918
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization	13,041	12,599
Provision for loan and lease losses	11,635	7,648
Net amortization of premium on securities	18,993	22,417
Securities gains, net	-2,460	-6,612
(Increase) decrease in trading account securities	1,801	-839
Stock based compensation	2,683	1,538
Write downs and losses on repossessed assets	1,365	2,440
Loans originated for sale	-694,622	-1,203,402
Proceeds on sales of loans held for sale	665,837	1,262,488
Net gains on sales of loans held for sale	-17,604	-24,247
(Increase) decrease in accrued interest receivable	-603	94
(Increase) decrease in prepaid expenses	-857	8,645
Decrease in accrued interest payable	-1,176	-843
Capitalization of mortgage servicing rights	-5,955	-10,595
Valuation adjustment on mortgage servicing rights	0	-496
Other, net	7,396	-3,825
NET CASH PROVIDED BY OPERATING ACTIVITIES	29,111	95,928
CASH FLOWS FROM INVESTING ACTIVITIES:	'	'
Purchase of time deposits in other financial institutions	0	-3,605
Proceeds from the sale of securities available for sale	699,830	343,410
Proceeds from the sale of other investments	10,178	3,760
Proceeds from the maturity of and principal paydowns on securities available for sale	104,089	191,683
Proceeds from the maturity of and principal paydowns on securities held to maturity	2,217	1,982
Proceeds from the maturity of and principal paydowns on other securities	750	0
Purchase of securities available for sale	-543,407	-541,265
Purchase of securities held to maturity	-20,944	0
Purchase of other investments	-8,849	-4,566
Net increase in loans and leases	-317,604	-97,741
Purchase of bank owned life insurance policies	0	-2,835
Capital expenditures	-5,738	-8,442
Proceeds from the sale of equipment	175	0
Proceeds on sale of OREO and other repossessed assets	14,578	14,304
NET CASH USED BY INVESTING ACTIVITIES	-64,725	-103,315
CASH FLOWS FROM FINANCING ACTIVITIES:	'	'
Net increase in demand deposits and savings accounts	100,466	138,415
Net decrease in time deposit accounts	-40,246	-59,077
Net decrease in short-term borrowings	-60,451	-578
Proceeds from other borrowings	5,000	160
Repayments of other borrowings	-20,596	-66,647
Purchase of noncontrolling interest	0	-2,798
Purchase of treasury stock	-625	-1,601
Proceeds from issuance of common stock	662	2,360
Excess tax benefits on exercised stock options	119	68
Dividends paid	-6,149	-5,961
NET CASH PROVIDED (USED) BY FINANCING ACTIVITIES	-21,820	4,341
Net decrease in cash and cash equivalents	-57,434	-3,046
Cash and cash equivalents at beginning of year	125,270	168,054
CASH AND CASH EQUIVALENTS AT END OF PERIOD	67,836	165,008
Supplemental disclosures:	'	'
Cash paid for income/franchise taxes	2,632	4,819
Cash paid for interest	26,925	27,263
Loans transferred to OREO	6,528	13,318
Purchases of securities available for sale, accrued, not paid	$2,089	$7,540

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Equity (Unaudited) (USD $)	Total	Preferred Stock [Member]	Common Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]
In Thousands, unless otherwise specified
Balance at beginning of period at Dec. 31, 2012	$404,539	$81,698	$16,828	$50,359	$236,279	$16,641	$0	$2,734
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'
Comprehensive income	-1,542	'	'	'	28,854	-30,460	'	64
Cash dividends declared:	'	'	'	'	'	'	'	'
Preferred	-889	'	'	'	-889	'	'	'
Common	-5,072	'	'	'	-5,072	'	'	'
Purchase of noncontrolling interest	-2,798	'	'	'	'	'	'	-2,798
Purchase of shares of common stock	-1,601	'	'	'	'	'	-1,601	'
Issuance of shares of common stock	2,428	'	125	744	'	'	1,559	'
Commitments to issue common stock	1,538	'	'	1,538	'	'	'	'
Balance at end of period at Sep. 30, 2013	396,603	81,698	16,953	52,641	259,172	-13,819	-42	0
Balance at beginning of period at Dec. 31, 2013	439,460	81,698	18,399	91,632	265,067	-17,336	0	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'
Comprehensive income	47,249	'	'	'	29,637	17,612	'	'
Cash dividends declared:	'	'	'	'	'	'	'	'
Preferred	-613	'	'	'	-613	'	'	'
Common	-5,536	'	'	'	-5,536	'	'	'
Purchase of shares of common stock	-625	'	'	'	'	'	-625	'
Issuance of shares of common stock	781	'	78	78	'	'	625	'
Commitments to issue common stock	2,683	'	'	2,683	'	'	'	'
Balance at end of period at Sep. 30, 2014	$483,399	$81,698	$18,477	$94,393	$288,555	$276	$0	$0

Consolidated_Statements_of_Cha1

Consolidated Statements of Changes in Equity (Unaudited) (Parentheticals) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash dividends per share preferred stock (in dollars per share)	$7.50	$10.89
Cash dividends per share common stock (in dollars per share)	$0.30	$0.30
Shares of common stock purchased	24,042	59,174
Shares of common stock issued	102,349	182,392

Basis_of_Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Basis of Presentation	'
	BASIS OF PRESENTATION
	The interim unaudited consolidated financial statements contained herein should be read in conjunction with the audited consolidated financial statements and accompanying notes to the consolidated financial statements for the fiscal year ended December 31, 2013, included in the Form 10-K of Heartland Financial USA, Inc. ("Heartland") filed with the Securities and Exchange Commission ("SEC") on March 14, 2014. Accordingly, footnote disclosures which would substantially duplicate the disclosure contained in the audited consolidated financial statements have been omitted.
	The financial information of Heartland included herein has been prepared in accordance with U.S. generally accepted accounting principles for interim financial reporting and has been prepared pursuant to the rules and regulations for reporting on Form 10-Q and Rule 10-01 of Regulation S-X. Such information reflects all adjustments (consisting of normal recurring adjustments), that are, in the opinion of management, necessary for a fair presentation of the financial position and results of operations for the periods presented. The results of the interim period ended September 30, 2014, are not necessarily indicative of the results expected for the year ending December 31, 2014.
	Earnings Per Share
	Basic earnings per share is determined using net income available to common stockholders and weighted average common shares outstanding. Diluted earnings per share is computed by dividing net income available to common stockholders by the weighted average common shares and assumed incremental common shares issued. Amounts used in the determination of basic and diluted earnings per share for the three month and nine months ended September 30, 2014 and 2013, are shown in the table below:
		Three Months Ended
		September 30,
	(Dollars and number of shares in thousands, except per share data)	2014				2013
	Net income attributable to Heartland	$	11,973			$	6,810
	Preferred dividends and discount	(205		)		(276		)
	Net income available to common stockholders	$	11,768			$	6,534
	Weighted average common shares outstanding for basic earnings per share	18,469				16,936
	Assumed incremental common shares issued for common stock equivalents	284				285
	Weighted average common shares for diluted earnings per share	18,753				17,221
	Earnings per common share — basic	$	0.64			$	0.39
	Earnings per common share — diluted	$	0.63			$	0.38
	Number of antidilutive common stock equivalents excluded from diluted earnings per share computation	94				105
		Nine Months Ended
		September 30,
	(Dollars and number of shares in thousands, except per share data)	2014				2013
	Net income attributable to Heartland	$	29,637			$	28,854
	Preferred dividends and discount	(613		)		(889		)
	Net income available to common stockholders	$	29,024			$	27,965
	Weighted average common shares outstanding for basic earnings per share	18,456				16,904
	Assumed incremental common shares issued for common stock equivalents	287				279
	Weighted average common shares for diluted earnings per share	18,743				17,183
	Earnings per common share — basic	$	1.57			$	1.65
	Earnings per common share — diluted	$	1.55			$	1.63
	Number of antidilutive common stock equivalents excluded from diluted earnings per share computation	94				105
	Stock-Based Compensation
	Heartland may grant, through its Nominating and Compensation Committee (the "Compensation Committee"), non-qualified and incentive stock options, stock appreciation rights, stock awards, restricted stock, restricted stock units and cash incentive awards, under its 2012 Long-Term Incentive Plan (the "Plan"). The Plan, which was approved by stockholders in May 2012 and replaced Heartland's 2005 Long-Term Incentive Plan with respect to grants after such approval, reserved 368,026 shares of common stock at September 30, 2014, for issuance under future awards that may be granted under the Plan to employees and directors of, and service providers to, Heartland or its subsidiaries.
	Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 718, "Compensation-Stock Compensation" requires the measurement of the cost of employee services received in exchange for an award of equity instruments based upon the fair value of the award on the grant date. The cost of the award is based upon its fair value estimated on the date of grant and recognized in the consolidated statements of income over the vesting period of the award. The fair market value of restricted stock and restricted stock units is based on the fair value of the underlying shares of common stock on the date of grant. The fair value of stock options is estimated on the date of grant using the Black-Scholes model.
	The amount of tax benefit related to the exercise, vesting, and forfeiture of equity-based awards reflected in additional paid-in-capital, not taxes payable, was $119,000 and $68,000 during the nine months ended September 30, 2014, and 2013, respectively.
	Restricted Stock Units
	The Plan permits the Compensation Committee to grant restricted stock units ("RSUs"). On March 11, 2014, the Compensation Committee granted time-based RSUs with respect to 67,190 shares of common stock and on January 22, 2013, granted time-based RSUs with respect to 72,595 shares of common stock, to selected officers. The time-based RSUs, which represent the right, without payment, to receive shares of Heartland common stock at a specified date in the future based on specific vesting conditions, vest over five years in three equal installments on the third, fourth and fifth anniversaries of the grant date, will be settled in common stock upon vesting, and will not be entitled to dividends until vested. The time-based RSUs granted in 2014 vest upon a "qualified retirement" (as defined in the RSU agreement) while the RSUs granted in 2013 allow the Compensation Committee to exercise its discretion to provide for vesting upon retirement. In both cases, the retiree is required to sign a non-solicitation and non-compete agreement as a condition to vesting.
	In addition to the time-based RSUs referenced in the preceding paragraph, the Compensation Committee granted performance-based RSUs with respect to 32,645 shares of common stock on March 11, 2014, and performance-based RSUs with respect to 40,990 shares of common stock on January 22, 2013, to Heartland executives and subsidiary presidents. These performance-based RSUs vest based first on performance measures tied to Heartland's earnings and loans on December 31, 2014, for the 2014 RSUs, and earnings and assets on December 31, 2013, for the 2013 RSUs, and then on time-based vesting conditions. For the grants awarded in 2014, the portion of the RSUs earned based on performance vest on December 31, 2016, if the executive remains employed on that date, and for the grants awarded in 2013, the portion of the RSUs earned based on performance vest on December 31, 2015, subject to employment on that date.
	The Compensation Committee also grants RSUs under the Plan to directors as part of their compensation, to new management level employees at commencement of employment, and to other employees and service providers as incentives. During the nine months ended September 30, 2014, and 2013, 33,304 and 13,100 RSUs, respectively, were granted to directors and new employees.
	A summary of the status of the RSUs as of September 30, 2014 and 2013, and changes during the nine months ended September 30, 2014 and 2013, follows:
		2014							2013
		Shares			Weighted-Average Grant Date				Shares		Weighted-Average Grant Date
					Fair Value						Fair Value
	Outstanding at January 1	353,070			$	18.62			348,897		$	15.75
	Granted	133,139			26.65				126,685		26.92
	Vested	(74,521	)		16.95				(43,388	)	17
	Forfeited	(7,483	)		20.22				(57,982	)	19.08
	Outstanding at September 30	404,205			$	21.44			374,212		$	19.02
	Total compensation costs recorded for RSUs were $2.7 million and $1.5 million for the nine months ended September 30, 2014, and 2013, respectively. As of September 30, 2014, there were $3.6 million of total unrecognized compensation costs related to the 2005 and 2012 Long-Term Incentive Plans for RSUs which are expected to be recognized through 2019.
	Options
	Although the Plan provides authority to the Compensation Committee to grant stock options, no options were granted during the first nine months of 2014 and 2013. Prior to 2009, options were typically granted annually with an expiration date ten years after the date of grant. Vesting was generally over a five-year service period with portions of a grant becoming exercisable at three years, four years, and five years after the date of grant. A summary of the status of the stock options as of September 30, 2014 and 2013, and changes during the nine months ended September 30, 2014 and 2013, follows:
		2014							2013
		Shares			Weighted-Average				Shares		Weighted-Average
					Exercise Price						Exercise Price
	Outstanding at January 1	261,936			$	23.6			377,907		$	22.62
	Granted	—			—				—		—
	Exercised	(9,750	)		19.67				(68,586	)	19.54
	Forfeited	(7,000	)		26.62				(1,800	)	26.68
	Outstanding at September 30	245,186			$	23.67			307,521		$	23.28
	Options exercisable at September 30	245,186			$	23.67			307,521		$	23.28
	At September 30, 2014, the vested options totaled 245,186 shares with a weighted average exercise price of $23.67 per share and a weighted average remaining contractual life of 2.25 years. The intrinsic value (the difference between the market price and the aggregate exercise price) for the vested options as of September 30, 2014, was $594,000. The intrinsic value for the total of all options exercised during the nine months ended September 30, 2014, was $41,000.
	The exercise price of stock options granted is established by the Compensation Committee, but the exercise price for the stock options may not be less than the fair market value of the shares on the date that the option is granted or, if greater, the par value of a share of stock. Each option granted is exercisable in full at any time or from time to time, subject to vesting provisions, as determined by the Compensation Committee and as provided in the option agreement, but such time may not exceed ten years from the grant date. Cash received from options exercised was $192,000 for the nine months ended September 30, 2014, and $1.3 million for the nine months ended September 30, 2013.
	Total compensation costs recorded for options were $0 and $10,000 for the nine months ended September 30, 2014, and 2013, respectively. There are no unrecorded compensation costs related to options at September 30, 2014.
	Subsequent Events
	On October 22, 2014, Heartland entered into a merger agreement with Community Banc-Corp of Sheboygan, Inc., parent company of Community Bank & Trust in Sheboygan, Wisconsin. As of September 30, 2014, Community Bank & Trust had assets of approximately $525.0 million, including loans of $410.0 million. Under the merger agreement, and subject to shareholder and regulatory approval, Community Banc-Corp of Sheboygan, Inc. will merge into Heartland, and the shareholders of Community Banc-Corp of Sheboygan, Inc. will receive Heartland common stock. The aggregate purchase price will be based upon 155% of adjusted tangible book value, as defined in the merger agreement, of Community Banc-Corp of Sheboygan, Inc. prior to closing. Heartland estimates the purchase price at approximately $52.0 million. The merger agreement also provides that Community Bank & Trust will simultaneously merge into Heartland’s Wisconsin Bank & Trust subsidiary. The transaction, expected to close in the first quarter of 2015, is intended to be a tax-free reorganization with respect to the stock consideration received by the stockholders of Community Banc-Corp of Sheboygan, Inc.
Heartland has entered into an agreement to sell one branch of its Morrill & Janes Bank and Trust Company subsidiary. The branch sale is expected to close on November 7, 2014. The branch had loans of approximately $9.0 million and deposits of $28.0 million at September 30, 2014. The anticipated premium on the branch sale is 2% of average deposits.
Effect of New Financial Accounting Standards
In July 2013, the FASB issued ASU No. 2013-11, "Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists," to eliminate the diversity in practice and to increase the comparability of financial statements among companies. The guidance requires that a reporting entity generally must show an unrecognized tax benefit, or a portion of an unrecognized tax benefit, for a net operating loss carryforward, similar tax loss or a tax credit carryforward as a reduction of a deferred tax asset. However, the entity should present the unrecognized tax benefit as a liability and not as a reduction of a deferred tax asset if the carryforward or tax loss is not available on the financial statement date to settle any additional income tax liability that would result from the disallowance of the tax position under the applicable tax law, or the applicable tax law does not require the company to use, and the company does not intend to use, the carryforward or tax loss to settle additional income taxes resulting from the disallowance of the tax position. The guidance does not require any new recurring disclosures because it does not affect the recognition or measurement of uncertain tax positions. Heartland adopted this standard on January 1, 2014, and the adoption did not have a material impact on the results of operations, financial position, and liquidity.
In January 2014, the FASB issued ASU 2014-01, "Accounting for Investments in Qualified Affordable Housing Projects." The amendments in ASU 2014-01 to Topic 323, "Equity Investments and Joint Ventures," provide guidance on accounting for investments by a reporting entity in flow-through limited liability entities that manage or invest in affordable housing projects that qualify for the low-income housing tax credit. The amendments permit reporting entities to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense (benefit). The amendments are effective for fiscal years, and interim periods within those years, beginning after December 31, 2014, and should be applied retrospectively to all periods presented. Early adoption is permitted. Heartland is in the process of evaluating the impact that adoption of this guidance will have on the results of operations, financial position, and liquidity.
In January 2014, the FASB issued ASU 2014-04, "Receivables-Troubled Debt Restructurings by Creditors: Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans Upon Foreclosure." The amendments in ASU 2014-04 clarify that an in-substance foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (i) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (ii) the borrower conveying all interest in the residential real estate property to the creditor to satisfy the loan through completion of a deed in lieu of foreclosure or similar legal agreement. ASU 2014-04 also requires disclosure of both the amount of foreclosed residential real estate property held by the creditor and the recorded investment in loans collateralized by residential real estate property that are in the process of foreclosure. The amendments are effective for fiscal years, and interim periods within those years, beginning after December 15, 2014, with early adoption permitted. Once adopted, an entity can elect either (i) a modified retrospective transition method or (ii) a prospective transition method. The modified retrospective transition method is applied by means of a cumulative-effect adjustment to residential mortgage loans and foreclosed residential real estate properties existing as of the beginning of the period for which the amendments of ASU 2014-04 are effective, with real estate reclassified to loans measured at the carrying value of the real estate at the date of adoption and loans reclassified to real estate measured at the lower of net carrying value of the loan or the fair value of the real estate less costs to sell at the date of adoption. The prospective transition method is applied by means of applying the amendments of ASU 2014-04 to all instances of receiving physical possession of residential real estate properties that occur after the date of adoption. Heartland does not expect the adoption of this standard to have a material impact on the results of operations, financial position, and liquidity.
In August 2014, the FASB issued ASU 2014-14, "Receivables-Troubled Debt Restructurings by Creditors: Classification of Certain Government-Guaranteed Mortgage Loans Upon Foreclosure." The amendment clarifies how creditors are to classify certain government-guaranteed mortgage loans upon foreclosure. The amendment requires that a mortgage loan be derecognized and a separate other receivable be recognized upon foreclosure if the following conditions are met: (1) the loan has a government guarantee that is not separate from the loan before foreclosure, and (2) at the time of foreclosure, the creditor has the intent to convey the real estate property to the guarantor and make a claim on the guarantee, and the creditor has the ability to recover under the claim, and (3) at the time of foreclosure, any amount of the claim that is determined on the basis of the fair value of the real estate is fixed. Upon foreclosure, the separate other receivable should be measured on the amount of the loan balance (principal and interest) expected to be recovered for the guarantor. This amendment is effective for annual reporting periods, and interim reporting periods within those years, beginning after December 15, 2014, with early adoption permitted. Heartland does not expect the adoption of this standard to have a material impact on the results of operations, financial position, and liquidity.
Reclassifications
In the first quarter of 2014, Heartland revised the classification of mortgage servicing rights income from loan servicing income to gain on sale of loans held for sale. The reclassification is presented in both the current and prior reporting periods. For the three and nine months ended September 30, 2013, $3.4 million and $10.6 million, respectively, were reclassified from loan servicing income to gain on sale of loans held for sale.
During the first quarter of 2014, Heartland revised the classification of loss on sales/valuations of other real estate and repossessed assets, net, from other real estate and loan collection expenses to a specific noninterest income classification. This reclassification is presented in both the current and prior reporting periods. For the three and nine months ended September 30, 2013, losses of $339,000 and $2.4 million were reclassified from other real estate and loan collection expenses to loss on sales/valuations of other real estate and repossessed assets, net. This reclassification results in other real estate and loan collection expenses for the three and nine months ended September 30, 2013, decreasing from $1.1 million and $4.9 million as previously reported to $730,000 and $2.4 million, respectively.
These reclassifications do not have a material impact on Heartland's financial statements and do not affect the financial results. Heartland believes these reclassifications are more consistent with industry reporting practices.

Securities

Securities	9 Months Ended
	Sep. 30, 2014
Investments, Debt and Equity Securities [Abstract]	'
Securities	'
	SECURITIES
	The amortized cost, gross unrealized gains and losses, and estimated fair values of securities available for sale as of September 30, 2014, and December 31, 2013, are summarized in the table below, in thousands:
		Amortized			Gross			Gross			Estimated
		Cost			Unrealized			Unrealized			Fair
					Gains			Losses			Value
	September 30, 2014
	U.S. government corporations and agencies	$	13,884		$	74		$	(12	)	$	13,946
	Mortgage-backed securities	1,166,166			10,403			(11,692		)	1,164,877
	Obligations of states and political subdivisions	180,998			5,680			(867		)	185,811
	Total debt securities	1,361,048			16,157			(12,571		)	1,364,634
	Equity securities	5,021			48			—			5,069
	Total	$	1,366,069		$	16,205		$	(12,571	)	$	1,369,703
	December 31, 2013
	U.S. government corporations and agencies	$	220,157		$	147		$	(2,001	)	$	218,303
	Mortgage-backed securities	1,156,983			9,538			(22,574		)	1,143,947
	Obligations of states and political subdivisions	277,320			1,706			(12,402		)	266,624
	Total debt securities	1,654,460			11,391			(36,977		)	1,628,874
	Equity securities	4,996			32			—			5,028
	Total	$	1,659,456		$	11,423		$	(36,977	)	$	1,633,902
	At both September 30, 2014, and December 31, 2013, the amortized cost of the available for sale securities is net of $184,000 of credit related other-than-temporary impairment ("OTTI").
	The amortized cost, gross unrealized gains and losses and estimated fair values of held to maturity securities as of September 30, 2014, and December 31, 2013, are summarized in the table below, in thousands:
		Amortized			Gross			Gross			Estimated
		Cost			Unrealized			Unrealized			Fair
					Gains			Losses			Value
	September 30, 2014
	Mortgage-backed securities	$	5,805		$	263		$	(533	)	$	5,535
	Obligations of states and political subdivisions	249,507			12,914			(1,315		)	261,106
	Total	$	255,312		$	13,177		$	(1,848	)	$	266,641
	December 31, 2013
	Mortgage-backed securities	$	5,973		$	199		$	(321	)	$	5,851
	Obligations of states and political subdivisions	231,525			5,801			(5,740		)	231,586
	Total	$	237,498		$	6,000		$	(6,061	)	$	237,437
	At September 30, 2014, the amortized cost of the held to maturity securities is net of $797,000 of credit related OTTI and $445,000 of non-credit related OTTI. At December 31, 2013, the amortized cost of the held to maturity securities was net of $797,000 of credit related OTTI and $517,000 of non-credit related OTTI.
	Approximately 97% of Heartland's mortgage-backed securities are issuances of government-sponsored enterprises.
	The amortized cost and estimated fair value of debt securities available for sale at September 30, 2014, by contractual maturity are as follows, in thousands. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without penalties.
		Amortized Cost			Estimated Fair Value
	Due in 1 year or less	$	8,440		$	8,525
	Due in 1 to 5 years	19,027			19,184
	Due in 5 to 10 years	83,717			86,936
	Due after 10 years	83,698			85,112
	Total debt securities	194,882			199,757
	Mortgage-backed securities	1,166,166			1,164,877
	Equity securities	5,021			5,069
	Total investment securities	$	1,366,069		$	1,369,703
	The amortized cost and estimated fair value of debt securities held to maturity at September 30, 2014, by contractual maturity are as follows, in thousands. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without penalties.
		Amortized Cost			Estimated Fair Value
	Due in 1 year or less	$	—		$	—
	Due in 1 to 5 years	13,062			13,910
	Due in 5 to 10 years	47,769			50,227
	Due after 10 years	188,676			196,969
	Total debt securities	249,507			261,106
	Mortgage-backed securities	5,805			5,535
	Total investment securities	$	255,312		$	266,641
	Gross gains and losses realized related to the sales of securities available for sale for the three and nine months ended September 30, 2014, and 2013, are summarized as follows, in thousands:
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2014			2013			2014			2013
	Proceeds from sales	$	189,939		$	127,475		$	699,830		$	343,410
	Gross security gains	1,101			1,420			4,547			7,703
	Gross security losses	276			302			2,087			1,091
	The following tables summarize, in thousands, the amount of unrealized losses, defined as the amount by which cost or amortized cost exceeds fair value, and the related fair value of investments with unrealized losses in Heartland's securities portfolio as of September 30, 2014, and December 31, 2013. The investments were segregated into two categories: those that have been in a continuous unrealized loss position for less than 12 months and those that have been in a continuous unrealized loss position for 12 or more months. The reference point for determining how long an investment was in an unrealized loss position was September 30, 2013, and December 31, 2012, respectively. Securities for which Heartland has taken credit-related OTTI write-downs are categorized as being "less than 12 months" or "12 months or longer" in a continuous loss position based on the point in time that the fair value declined to below the cost basis and not the period of time since the credit-related OTTI write-down.
	Securities available for sale	Less than 12 months						12 months or longer						Total
		Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
Value			Losses			Value			Losses			Value		Losses
September 30, 2014
U.S. government corporations and agencies	$	—		$	—		$	978		$	(12	)	$	978	$	(12	)
Mortgage-backed securities	514,918			(5,627		)	296,255			(6,065		)	811,173		(11,692		)
Obligations of states and political subdivisions	886			(6		)	42,344			(861		)	43,230		(867		)
Total temporarily impaired securities	$	515,804		$	(5,633	)	$	339,577		$	(6,938	)	$	855,381	$	(12,571	)
December 31, 2013
U.S. government corporations and agencies	$	196,345		$	(2,001	)	$	—		$	—		$	196,345	$	(2,001	)
Mortgage-backed securities	640,684			(17,064		)	118,229			(5,510		)	758,913		(22,574		)
Obligations of states and political subdivisions	196,987			(11,452		)	10,714			(950		)	207,701		(12,402		)
Total temporarily impaired securities	$	1,034,016		$	(30,517	)	$	128,943		$	(6,460	)	$	1,162,959	$	(36,977	)
Securities held to maturity	Less than 12 months						12 months or longer						Total
	Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
	Value			Losses			Value			Losses			Value		Losses
September 30, 2014
Mortgage-backed securities	$	—		$	—		$	2,861		$	(533	)	$	2,861	$	(533	)
Obligations of states and political subdivisions	1,577			(390		)	36,412			(925		)	37,989		(1,315		)
Total temporarily impaired securities	$	1,577		$	(390	)	$	39,273		$	(1,458	)	$	40,850	$	(1,848	)
December 31, 2013
Mortgage-backed securities	$	2,170		$	(319	)	$	834		$	(2	)	$	3,004	$	(321	)
Obligations of states and political subdivisions	47,175			(3,508		)	21,505			(2,232		)	68,680		(5,740		)
Total temporarily impaired securities	$	49,345		$	(3,827	)	$	22,339		$	(2,234	)	$	71,684	$	(6,061	)
Heartland reviews the investment securities portfolio on a quarterly basis to monitor its exposure to OTTI. A determination as to whether a security's decline in fair value is other-than-temporary takes into consideration numerous factors and the relative significance of any single factor can vary by security. Some factors Heartland may consider in the OTTI analysis include the length of time the security has been in an unrealized loss position, changes in security ratings, financial condition of the issuer, as well as security and industry specific economic conditions. In addition, with regard to debt securities, Heartland may also evaluate payment structure, whether there are defaulted payments or expected defaults, prepayment speeds, and the value of any underlying collateral. For certain debt securities in unrealized loss positions, Heartland prepares cash flow analyses to compare the present value of cash flows expected to be collected from the security with the amortized cost basis of the security. During 2012, Heartland experienced deterioration in the credit support on three private label mortgage-backed securities which resulted in a credit-related OTTI loss. The underlying collateral on these securities experienced an increased level of defaults and a slowing of voluntary prepayments causing the present value of the forward expected cash flows, using prepayment and default vectors, to be below the amortized cost basis of the securities. Based on Heartland's evaluation, a $981,000 OTTI on three private label mortgage-backed securities attributable to credit-related losses was recorded in March 2012. The other-than-temporary credit-related losses were $797,000 in the held to maturity category and $184,000 in the available for sale category.
The remaining unrealized losses on Heartland's mortgage-backed securities are the result of changes in market interest rates or widening of market spreads subsequent to the initial purchase of the securities and not related to concerns regarding the underlying credit of the issuers or the underlying collateral. It is expected that the securities will not be settled at a price less than the amortized cost of the investment. Because the decline in fair value is attributable to changes in interest rates or widening market spreads and not credit quality, and because Heartland has the intent and ability to hold these investments until a market price recovery or to maturity and does not believe it will be required to sell the securities before maturity, these investments are not considered other-than-temporarily impaired.
Unrealized losses on Heartland's obligations of states and political subdivisions are the result of changes in market interest rates or widening of market spreads subsequent to the initial purchase of the securities. Management monitors the credit quality and financial stability of the underlying municipalities. Because the decline in fair value is attributable to changes in interest rates or widening market spreads due to insurance company downgrades and not underlying credit quality, and because Heartland has the intent and ability to hold these investments until a market price recovery or to maturity and does not believe it will be required to sell the securities before maturity, these investments are not considered other-than-temporarily impaired.
There were no gross realized gains or losses on the sale of available for sale securities with OTTI write-downs for the periods ended September 30, 2014, or December 31, 2013.
The following table shows the detail of OTTI write-downs on debt securities included in earnings and the related changes in other accumulated comprehensive income ("AOCI") for the same securities, in thousands:
	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2014			2013			2014			2013
Recorded as part of gross realized losses:
Credit related OTTI	$	—		$	—		$	—		$	—
Intent to sell OTTI	—			—			—			—
Total recorded as part of gross realized losses	—			—			—			—
Recorded directly to AOCI for non-credit related impairment:
Residential mortgage backed securities	—			—			—			—
Accretion of non-credit related impairment	(24		)	(24		)	(72		)	(72		)
Total changes to AOCI for non-credit related impairment	(24		)	(24		)	(72		)	(72		)
Total OTTI losses (accretion) recorded on debt securities, net	$	(24	)	$	(24	)	$	(72	)	$	(72	)
Heartland has not experienced any OTTI writedowns since the initial impairment charge in 2012.
Included in other securities at September 30, 2014 and December 31, 2013, were shares of stock in each Federal Home Loan Bank (the "FHLB") of Des Moines, Chicago, Dallas, San Francisco, Seattle, and Topeka at an amortized cost of $14.3 million and $15.6 million, respectively.

Loans_and_Leases

Loans and Leases	9 Months Ended
	Sep. 30, 2014
Receivables [Abstract]	'
Loans and Leases	'
	LOANS AND LEASES
	Loans and leases as of September 30, 2014, and December 31, 2013, were as follows, in thousands:
		September 30, 2014				December 31, 2013
	Loans and leases receivable held to maturity:
	Commercial	$	1,024,712			$	950,197
	Commercial real estate	1,684,832				1,529,683
	Agricultural and agricultural real estate	404,423				376,735
	Residential real estate	360,309				349,349
	Consumer	326,148				294,145
	Gross loans and leases receivable held to maturity	3,800,424				3,500,109
	Unearned discount	(98		)		(168		)
	Deferred loan fees	(2,021		)		(2,989		)
	Total net loans and leases receivable held to maturity	3,798,305				3,496,952
	Loans covered under loss share agreements:
	Commercial and commercial real estate	1,188				2,314
	Agricultural and agricultural real estate	573				543
	Residential real estate	1,762				2,280
	Consumer	327				612
	Total loans covered under loss share agreements	3,850				5,749
	Allowance for loan and lease losses	(41,698		)		(41,685		)
	Loans and leases receivable, net	$	3,760,457			$	3,461,016
	Heartland has certain lending policies and procedures in place that are designed to provide for an acceptable level of credit risk. The board of directors reviews and approves these policies and procedures on a regular basis. A reporting system supplements the review process by providing management and the board with frequent reports related to loan production, loan quality, concentrations of credit, loan delinquencies and nonperforming loans and potential problem loans. Diversification in the loan portfolio is also a means of managing risk associated with fluctuations in economic conditions.
	The commercial and commercial real estate loan portfolio includes a wide range of business loans, including lines of credit for working capital and operational purposes and term loans for the acquisition of equipment and real estate. Although most loans are made on a secured basis, loans may be made on an unsecured basis where warranted by the overall financial condition of the borrower. Terms of commercial business loans generally range from one to five years. Commercial loans and leases are primarily made based on the identified cash flow of the borrower and secondarily on the underlying collateral provided by the borrower. The collateral that Heartland requires for most of these loans and leases is based upon the discounted market value of the collateral. The primary repayment risks of commercial loans and leases are that the cash flow of the borrowers may be unpredictable, and the collateral securing these loans may fluctuate in value. Heartland seeks to minimize these risks in a variety of ways. The underwriting analysis includes credit verification, analysis of global cash flows, appraisals and a review of the financial condition of the borrower. Personal guarantees are frequently required as a tertiary form of repayment. In addition, when underwriting loans for commercial real estate, careful consideration is given to the property's operating history, future operating projections, current and projected occupancy, location and physical condition. Heartland also utilizes government guaranteed lending through the U.S. Small Business Administration and the USDA Rural Development Business and Industry Program to assist customers with longer-term funding and to reduce risk.
	Agricultural loans, many of which are secured by crops, machinery and real estate, are provided to finance capital improvements and farm operations as well as acquisitions of livestock and machinery. Agricultural loans present unique credit risks relating to adverse weather conditions, loss of livestock due to disease or other factors, declines in market prices for agricultural products and the impact of government regulations. The ultimate repayment of agricultural loans is dependent upon the profitable operation or management of the agricultural entity. In underwriting agricultural loans, lending personnel work closely with their customers to review budgets and cash flow projections for the ensuing crop year. These budgets and cash flow projections are monitored closely during the year and reviewed with the customers at least annually. Lending personnel also work closely with governmental agencies, including the Farm Service Agency, to help agricultural customers obtain credit enhancement products such as loan guarantees or interest assistance.
	Heartland originates first-lien, adjustable-rate and fixed-rate, one-to-four-family residential real estate loans for the construction, purchase or refinancing of a single family residential property. These loans are principally collateralized by owner-occupied properties and are amortized over 10 to 30 years. Heartland typically sells longer-term, low-rate, residential mortgage loans in the secondary market with servicing rights retained. This practice allows Heartland to better manage interest rate risk and liquidity risk. The Heartland bank subsidiaries participate in lending programs sponsored by U.S. government agencies such as Veterans Administration and Federal Home Administration when justified by market conditions.
	Consumer lending includes motor vehicle, home improvement, home equity and small personal credit lines. Consumer loans typically have shorter terms, lower balances, higher yields and higher risks of default than one-to-four-family residential mortgage loans. Consumer loan collections are dependent on the borrower's continuing financial stability, and are therefore more likely to be affected by adverse personal circumstances. Risk is reduced through underwriting criteria, which include credit verification, appraisals, a review of the borrower's financial condition, and personal cash flows. A security interest, with title insurance when necessary, is taken in the underlying real estate. Heartland's consumer finance subsidiaries, Citizens Finance Co. and Citizens Finance of Illinois Co., typically lend to borrowers with past credit problems or limited credit histories, which comprise approximately 22% of Heartland's total consumer loan portfolio.
	Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due. Heartland’s policy is to discontinue the accrual of interest income on any loan or lease when, in the opinion of management, there is a reasonable doubt as to the timely collection of the interest and principal, normally when a loan or lease is 90 days past due. When interest accruals are deemed uncollectible, interest credited to income in the current year is reversed and interest accrued in prior years is charged to the allowance for loan and lease losses. Nonaccrual loans and leases are returned to an accrual status when, in the opinion of management, the financial position of the borrower indicates that there is no longer any reasonable doubt as to the timely payment of interest and principal.
	Under Heartland’s credit practices, a loan is impaired when, based on current information and events, it is probable that Heartland will be unable to collect all amounts due according to the contractual terms of the loan agreement. Loan impairment is measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate, except where more practical, at the observable market price of the loan or the fair value of the collateral if the loan is collateral dependent.
	The following table shows the balance in the allowance for loan and lease losses at September 30, 2014, and December 31, 2013, and the related loan balances, disaggregated on the basis of impairment methodology, in thousands. Loans evaluated under ASC 310-10-35 include loans on nonaccrual status and troubled debt restructurings, which are individually evaluated for impairment, and other impaired loans deemed to have similar risk characteristics. All other loans are collectively evaluated for impairment under ASC 450-20. Heartland has made no significant changes to the accounting for the allowance for loan and lease losses policy during 2014.
		Allowance For Loan and Lease Losses												Gross Loans and Leases Receivable Held to Maturity
		Ending Balance				Ending Balance				Total				Ending Balance Evaluated for Impairment				Ending Balance Evaluated for Impairment				Total
		Under ASC				Under ASC								Under ASC				Under ASC
		310-10-35				450-20								310-10-35				450-20
	September 30, 2014
	Commercial	$	451			$	10,904			$	11,355			$	8,278			$	1,016,434			$	1,024,712
	Commercial real estate	1,176				14,969				16,145				33,280				1,651,552				1,684,832
	Agricultural and agricultural real estate	67				3,049				3,116				5,689				398,734				404,423
	Residential real estate	424				3,199				3,623				8,187				352,122				360,309
	Consumer	1,287				5,966				7,253				6,150				319,998				326,148
	Unallocated	—				206				206				—				—				—
	Total	$	3,405			$	38,293			$	41,698			$	61,584			$	3,738,840			$	3,800,424
	December 31, 2013
	Commercial	$	2,817			$	10,282			$	13,099			$	14,644			$	935,553			$	950,197
	Commercial real estate	818				13,334				14,152				28,299				1,501,384				1,529,683
	Agricultural and agricultural real estate	756				2,236				2,992				16,667				360,068				376,735
	Residential real estate	605				3,115				3,720				7,214				342,135				349,349
	Consumer	1,721				6,001				7,722				5,137				289,008				294,145
	Unallocated	—				—				—				—				—				—
	Total	$	6,717			$	34,968			$	41,685			$	71,961			$	3,428,148			$	3,500,109
	The following table presents nonaccrual loans, accruing loans past due 90 days or more and troubled debt restructured loans not covered under loss share agreements at September 30, 2014, and December 31, 2013, in thousands. There were no nonaccrual leases, accruing leases past due 90 days or more or restructured leases at September 30, 2014, and December 31, 2013.
		September 30, 2014				31-Dec-13
	Nonaccrual loans	$	25,802			$	29,313
	Nonaccrual troubled debt restructured loans	4,328				13,081
	Total nonaccrual loans	$	30,130			$	42,394
	Accruing loans past due 90 days or more	$	—			$	24
	Performing troubled debt restructured loans	$	11,994			$	19,353
	The following tables provide information on troubled debt restructured loans that were modified during the three and nine months ended September 30, 2014, and September 30, 2013, dollars in thousands:
		Three Months Ended
		September 30,
		2014											2013
		Number			Pre-				Post-				Number			Pre-				Post-
		of Loans			Modification				Modification				of Loans			Modification				Modification
					Recorded				Recorded							Recorded				Recorded
		Investment			Investment						Investment			Investment
Commercial	—			$	—			$	—			—			$	—			$	—
Commercial real estate	—			—				—				—			—				—
Total commercial and commercial real estate	—			—				—				—			—				—
Agricultural and agricultural real estate	1			60				60				—			—				—
Residential real estate	—			—				—				1			65				65
Consumer	—			—				—				—			—				—
Total	1			$	60			$	60			1			$	65			$	65
	Nine Months Ended
	September 30,
	2014											2013
	Number			Pre-				Post-				Number			Pre-				Post-
	of Loans			Modification				Modification				of Loans			Modification				Modification
				Recorded				Recorded							Recorded				Recorded
				Investment				Investment							Investment				Investment
Commercial	—			$	—			$	—			3			$	17,873			$	17,873
Commercial real estate	1			298				298				—			—				—
Total commercial and commercial real estate	1			298				298				3			17,873				17,873
Agricultural and agricultural real estate	3			3,417				3,417				3			2,576				2,576
Residential real estate	1			38				38				4			762				762
Consumer	—			—				—				1			166				166
Total	5			$	3,753			$	3,753			11			$	21,377			$	21,377
The pre-modification and post-modification recorded investment represents amounts as of the date of loan modification. Since the modifications on these loans have been only interest rate concessions and term extensions, not principal reductions, the pre-modification and post-modification recorded investment amounts are the same. At September 30, 2014, there were no commitments to extend credit to any of the borrowers with an existing troubled debt restructuring.
The following tables provide information on troubled debt restructured loans for which there was a payment default during the three months and nine months ended September 30, 2014, and September 30, 2013, in thousands, that had been modified during the twelve month period prior to the default:
	With Payment Defaults During the Following Periods
	Three Months Ended
	September 30,
	2014							2013
	Number of Loans			Recorded Investment				Number of Loans			Recorded Investment
Commercial	—			$	—			1			$	13,000
Commercial real estate	—			—				—			—
Total commercial and commercial real estate	—			—				1			13,000
Agricultural and agricultural real estate	1			60				—			—
Residential real estate	—			—				—			—
Consumer	—			—				—			—
Total	1			$	60			1			$	13,000
	With Payment Defaults During the Following Periods
	Nine Months Ended
	September 30,
	2014							2013
	Number of Loans			Recorded Investment				Number of Loans			Recorded Investment
Commercial	—			$	—			2			$	17,670
Commercial real estate	—			—				—			—
Total commercial and commercial real estate	—			—				2			17,670
Agricultural and agricultural real estate	1			60				—			—
Residential real estate	—			—				2			167
Consumer	—			—				—			—
Total	1			$	60			4			$	17,837
Heartland's internal rating system is a series of grades reflecting management's risk assessment, based on its analysis of the borrower's financial condition. The "pass" category consists of all loans that are not in the "nonpass" category, categorized into a range of loan grades that reflect increasing, though still acceptable, risk. Movement of risk through the various grade levels in the pass category is monitored for early identification of credit deterioration. The "nonpass" category consists of special mention, substandard, doubtful and loss loans. The "special mention" rating is attached to loans where the borrower exhibits negative financial trends due to borrower specific or systemic conditions that, if left uncorrected, threaten its capacity to meet its debt obligations. The borrower is believed to have sufficient financial flexibility to react to and resolve its negative financial situation. These credits are closely monitored for improvement or deterioration. The "substandard" rating is assigned to loans that are inadequately protected by the current sound net worth and paying capacity of the borrower and may be further at risk due to deterioration in the value of collateral pledged. Well-defined weaknesses jeopardize liquidation of the debt. These loans are still considered collectible, however, a distinct possibility exists that Heartland will sustain some loss if deficiencies are not corrected. Substandard loans may exhibit some or all of the following weaknesses: deteriorating trends, lack of earnings, inadequate debt service capacity, excessive debt and/or lack of liquidity. The "doubtful" rating is assigned to loans where identified weaknesses make collection or liquidation in full, on the basis of existing facts, conditions and values, highly questionable and improbable. These borrowers are usually in default, lack liquidity and capital, as well as, resources necessary to remain an operating entity. Specific pending events, such as capital injections, liquidations or perfection of liens on additional collateral, may strengthen the credit, thus deferring classification of the loan as loss until exact status can be determined. The "loss" rating is assigned to loans considered uncollectible. As of September 30, 2014, Heartland had no loans classified as doubtful or loss. Loans are placed on "nonaccrual" when management does not expect to collect payments of principal and interest in full or when principal or interest has been in default for a period of 90 days or more, unless the loan is both well secured and in the process of collection.
The following table presents loans and leases not covered by loss share agreements by credit quality indicator at September 30, 2014, and December 31, 2013, in thousands:
	Pass				Nonpass				Total
September 30, 2014
Commercial	$	913,923			$	110,789			$	1,024,712
Commercial real estate	1,536,940				147,892				1,684,832
Total commercial and commercial real estate	2,450,863				258,681				2,709,544
Agricultural and agricultural real estate	377,733				26,690				404,423
Residential real estate	341,984				18,325				360,309
Consumer	316,609				9,539				326,148
Total gross loans and leases receivable held to maturity	$	3,487,189			$	313,235			$	3,800,424
December 31, 2013
Commercial	$	871,825			$	78,372			$	950,197
Commercial real estate	1,390,820				138,863				1,529,683
Total commercial and commercial real estate	2,262,645				217,235				2,479,880
Agricultural and agricultural real estate	335,821				40,914				376,735
Residential real estate	333,161				16,188				349,349
Consumer	284,148				9,997				294,145
Total gross loans and leases receivable held to maturity	$	3,215,775			$	284,334			$	3,500,109
The nonpass category in the table above is comprised of approximately 69% special mention and 31% substandard as of September 30, 2014. The percent of nonpass loans on nonaccrual status as of September 30, 2014, was 9%. As of December 31, 2013, the nonpass category in the table above was comprised of approximately 59% special mention, 38% substandard, and 3% doubtful. The percent of nonpass loans on nonaccrual status as of December 31, 2013, was 15%. Loans delinquent 30 to 89 days as a percent of total loans were 0.32% at September 30, 2014, compared to 0.30% at December 31, 2013. Changes in credit risk are monitored on a continuous basis and changes in risk ratings are made when identified. All impaired loans are reviewed at least annually.
The following table sets forth information regarding Heartland's accruing and nonaccrual loans and leases not covered by loss share agreements at September 30, 2014, and December 31, 2013, in thousands:
	Accruing Loans and Leases
	30-59 Days				60-89 Days				90 Days or				Total				Current				Nonaccrual		Total Loans
	Past Due				Past Due				More Past Due				Past Due										and Leases
September 30, 2014
Commercial	$	5,163			$	124			$	—			$	5,287			$	1,013,124			$	6,301	$	1,024,712
Commercial real estate	941				101				—				1,042				1,670,756				13,034		1,684,832
Total commercial and commercial real estate	6,104				225				—				6,329				2,683,880				19,335		2,709,544
Agricultural and agricultural real estate	89				—				—				89				402,319				2,015		404,423
Residential real estate	1,626				120				—				1,746				352,362				6,201		360,309
Consumer	2,915				990				—				3,905				319,664				2,579		326,148
Total gross loans and leases receivable held to maturity	$	10,734			$	1,335			$	—			$	12,069			$	3,758,225			$	30,130	$	3,800,424
December 31, 2013
Commercial	$	697			$	741			$	—			$	1,438			$	935,508			$	13,251	$	950,197
Commercial real estate	3,042				199				24				3,265				1,511,618				14,800		1,529,683
Total commercial and commercial real estate	3,739				940				24				4,703				2,447,126				28,051		2,479,880
Agricultural and agricultural real estate	818				—				—				818				369,907				6,010		376,735
Residential real estate	1,199				56				—				1,255				342,735				5,359		349,349
Consumer	2,624				1,089				—				3,713				287,458				2,974		294,145
Total gross loans and leases receivable held to maturity	$	8,380			$	2,085			$	24			$	10,489			$	3,447,226			$	42,394	$	3,500,109
The majority of Heartland's impaired loans are those that are nonaccrual or have had their terms restructured in a troubled debt restructuring. The following tables present, for impaired loans not covered by loss share agreements and by category of loan, the unpaid contractual balance at September 30, 2014, and December 31, 2013; the outstanding loan balance recorded on the consolidated balance sheets at September 30, 2014, and December 31, 2013; any related allowance recorded for those loans as of September 30, 2014, and December 31, 2013; the average outstanding loan balance recorded on the consolidated balance sheets during the three months and nine months ended September 30, 2014, and year ended December 31, 2013; and the interest income recognized on the impaired loans during the three months and nine months ended September 30, 2014, and year ended December 31, 2013, in thousands:
	Unpaid				Loan				Related				Quarter-to-				Quarter-to-				Year-to-		Year-to-
	Contractual				Balance				Allowance				Date				Date				Date		Date
	Balance								Recorded				Avg.				Interest				Avg.		Interest
													Loan				Income				Loan		Income
													Balance				Recognized				Balance		Recognized
September 30, 2014
Impaired loans with a related allowance:
Commercial	$	4,751			$	4,675			$	451			$	6,960			$	—			$	7,022	$	10
Commercial real estate	4,092				3,832				1,176				11,645				7				6,294		40
Total commercial and commercial real estate	8,843				8,507				1,627				18,605				7				13,316		50
Agricultural and agricultural real estate	3,368				3,368				67				4,021				12				4,176		67
Residential real estate	2,024				1,939				424				6,308				8				3,604		17
Consumer	4,339				4,330				1,287				5,489				21				4,710		81
Total loans held to maturity	$	18,574			$	18,144			$	3,405			$	34,423			$	48			$	25,806	$	215
Impaired loans without a related allowance:
Commercial	$	4,222			$	3,603			$	—			$	2,620			$	20			$	3,519	$	60
Commercial real estate	33,626				29,448				—				23,937				595				23,325		883
Total commercial and commercial real estate	37,848				33,051				—				26,557				615				26,844		943
Agricultural and agricultural real estate	3,749				2,321				—				2,100				3				3,731		10
Residential real estate	6,616				6,248				—				6,449				—				6,055		64
Consumer	1,820				1,820				—				1,627				17				1,722		34
Total loans held to maturity	$	50,033			$	43,440			$	—			$	36,733			$	635			$	38,352	$	1,051
Total impaired loans held to maturity:
Commercial	$	8,973			$	8,278			$	451			$	9,580			$	20			$	10,541	$	70
Commercial real estate	37,718				33,280				1,176				35,582				602				29,619		923
Total commercial and commercial real estate	46,691				41,558				1,627				45,162				622				40,160		993
Agricultural and agricultural real estate	7,117				5,689				67				6,121				15				7,907		77
Residential real estate	8,640				8,187				424				12,757				8				9,659		81
Consumer	6,159				6,150				1,287				7,116				38				6,432		115
Total impaired loans held to maturity	$	68,607			$	61,584			$	3,405			$	71,156			$	683			$	64,158	$	1,266
	Unpaid				Loan				Related				Year-to-				Year-to-
	Contractual				Balance				Allowance				Date				Date
	Balance								Recorded				Avg.				Interest
													Loan				Income
													Balance				Recognized
December 31, 2013
Impaired loans with a related allowance:
Commercial	$	7,901			$	7,901			$	2,817			$	5,343			$	38
Commercial real estate	9,164				8,909				818				7,686				282
Total commercial and commercial real estate	17,065				16,810				3,635				13,029				320
Agricultural and agricultural real estate	13,818				13,818				756				7,537				354
Residential real estate	2,460				2,460				605				3,179				13
Consumer	3,485				3,485				1,721				3,490				100
Total loans held to maturity	$	36,828			$	36,573			$	6,717			$	27,235			$	787
Impaired loans without a related allowance:
Commercial	$	7,724			$	6,743			$	—			$	9,394			$	89
Commercial real estate	24,830				19,390				—				25,676				538
Total commercial and commercial real estate	32,554				26,133				—				35,070				627
Agricultural and agricultural real estate	2,849				2,849				—				9,985				189
Residential real estate	5,345				4,754				—				4,198				80
Consumer	1,652				1,652				—				1,515				37
Total loans held to maturity	$	42,400			$	35,388			$	—			$	50,768			$	933
Total impaired loans held to maturity:
Commercial	$	15,625			$	14,644			$	2,817			$	14,737			$	127
Commercial real estate	33,994				28,299				818				33,362				820
Total commercial and commercial real estate	49,619				42,943				3,635				48,099				947
Agricultural and agricultural real estate	16,667				16,667				756				17,522				543
Residential real estate	7,805				7,214				605				7,377				93
Consumer	5,137				5,137				1,721				5,005				137
Total impaired loans held to maturity	$	79,228			$	71,961			$	6,717			$	78,003			$	1,720
On July 2, 2009, Heartland acquired all deposits of The Elizabeth State Bank in Elizabeth, Illinois through its subsidiary Galena State Bank & Trust Co. based in Galena, Illinois, in a whole bank loss sharing transaction facilitated by the FDIC. As of July 2, 2009, The Elizabeth State Bank had loans of $42.7 million. The estimated fair value of the loans acquired was $37.8 million.
The acquired loans and other real estate owned are covered by two loss share agreements between the FDIC and Galena State Bank & Trust Co., which affords Galena State Bank & Trust Co. significant loss protection. Under the loss share agreements, the FDIC covers 80% of the covered loan and other real estate owned losses (referred to as covered assets) up to $10 million and 95% of losses in excess of that amount. The term for loss sharing on non-residential real estate losses is five years with respect to losses and eight years with respect to recoveries, while the term for loss sharing on residential real estate loans is ten years with respect to losses and recoveries. The reimbursable losses from the FDIC are based on the book value of the relevant loan as determined by the FDIC at the date of the transaction. New loans made after the acquisition are not covered by the loss share agreements.
The Elizabeth State Bank acquisition was accounted for under the acquisition method of accounting in accordance with ASC 805, “Business Combinations.” Purchased loans acquired in a business combination, which include loans purchased in The Elizabeth State Bank acquisition, are recorded at estimated fair value on their purchase date, but the purchaser cannot carry over the related allowance for loan and lease losses. Purchased loans are accounted for under ASC 310-30, “Loans and Debt Securities with Deteriorated Credit Quality,” when the loans have evidence of credit deterioration since origination and it is probable at the date of the acquisition that Heartland will not collect all contractually required principal and interest payments. Evidence of credit quality deterioration at the purchase date included statistics such as past due and nonaccrual status. Generally, acquired loans that meet Heartland’s definition for nonaccrual status fall within the scope of ASC 310-30. The difference between contractually required payments at acquisition and the cash flows expected to be collected at acquisition is referred to as the nonaccretable difference which is included in the carrying value of the loans. Subsequent decreases to the expected cash flows will generally result in a provision for loan and lease losses. Subsequent increases in cash flows result in a reversal of the provision for loan and lease losses to the extent of prior charges, or a reclassification of the difference from nonaccretable to accretable with a positive impact on future interest income. Further, any excess of cash flows expected at acquisition over the estimated fair value is referred to as the accretable yield and is recognized into interest income over the remaining life of the loan when there is a reasonable expectation about the amount and timing of such cash flows.
The carrying amount of the loans covered by these loss share agreements at September 30, 2014, and December 31, 2013, consisted of purchased impaired and nonimpaired loans as summarized in the following table, in thousands:
	September 30, 2014												December 31, 2013
	Impaired				Non				Total				Impaired				Non				Total
	Purchased				Impaired				Covered				Purchased				Impaired				Covered
	Loans				Purchased				Loans				Loans				Purchased				Loans
					Loans												Loans
Commercial and commercial real estate	$	—			$	1,188			$	1,188			$	549			$	1,765			$	2,314
Agricultural and agricultural real estate	—				573				573				—				543				543
Residential real estate	—				1,762				1,762				—				2,280				2,280
Consumer loans	266				61				327				538				74				612
Total Covered Loans	$	266			$	3,584			$	3,850			$	1,087			$	4,662			$	5,749
On the acquisition date, the preliminary estimate of the contractually required payments receivable for all loans with evidence of credit deterioration since origination acquired in the acquisition was $13.8 million and the estimated fair value of the loans was $9.0 million. At September 30, 2014, and December 31, 2013, a majority of these loans were valued based upon the liquidation value of the underlying collateral, because the expected cash flows are primarily based on the liquidation of underlying collateral and the timing and amount of the cash flows could not be reasonably estimated. There was no allowance for loan and lease losses related to these ASC 310-30 loans at September 30, 2014, and December 31, 2013.
On the acquisition date, the preliminary estimate of the contractually required payments receivable for all nonimpaired loans acquired in the acquisition was $28.9 million and the estimated fair value of the loans was $28.7 million.

Allowance_for_Loan_and_Lease_L

Allowance for Loan and Lease Losses	9 Months Ended
	Sep. 30, 2014
Allowance for Loan and Lease Losses [Abstract]	'
Allowance for Loan and Lease Losses	'
	ALLOWANCE FOR LOAN AND LEASE LOSSES
	Changes in the allowance for loan and lease losses for the three and nine months ended September 30, 2014, and September 30, 2013, were as follows, in thousands:
		Commercial			Commercial			Agricultural			Residential			Consumer			Unallocated		Total
					Real Estate						Real Estate
	Balance at June 30, 2014	$	11,927		$	14,680		$	2,788		$	3,815		$	7,516		$	166	$	40,892
	Charge-offs	(875		)	(295		)	(338		)	(21		)	(1,120		)	—		(2,649		)
	Recoveries	145			539			5			29			184			—		902
	Provision	158			1,221			661			(200		)	673			40		2,553
	Balance at September 30, 2014	$	11,355		$	16,145		$	3,116		$	3,623		$	7,253		$	206	$	41,698
		Commercial			Commercial			Agricultural			Residential			Consumer			Unallocated		Total
					Real Estate						Real Estate
	Balance at December 31, 2013	$	13,099		$	14,152		$	2,992		$	3,720		$	7,722		$	—	$	41,685
	Charge-offs	(7,940		)	(1,379		)	(1,974		)	(225		)	(3,189		)	—		(14,707		)
	Recoveries	552			1,833			9			85			606			—		3,085
	Provision	5,644			1,539			2,089			43			2,114			206		11,635
	Balance at September 30, 2014	$	11,355		$	16,145		$	3,116		$	3,623		$	7,253		$	206	$	41,698
		Commercial			Commercial			Agricultural			Residential			Consumer			Unallocated		Total
					Real Estate						Real Estate
	Balance at June 30, 2013	$	9,436		$	13,671		$	3,055		$	3,580		$	7,881		$	—	$	37,623
	Charge-offs	(163		)	(630		)	—			(450		)	(1,270		)	—		(2,513		)
	Recoveries	78			514			1			76			383			—		1,052
	Provision	3,745			488			(240		)	331			825			—		5,149
	Balance at September 30, 2013	$	13,096		$	14,043		$	2,816		$	3,537		$	7,819		$	—	$	41,311
		Commercial			Commercial			Agricultural			Residential			Consumer			Unallocated		Total
					Real Estate						Real Estate
	Balance at December 31, 2012	$	11,388		$	14,473		$	2,138		$	3,543		$	7,173		$	—	$	38,715
	Charge-offs	(1,422		)	(2,561		)	(23		)	(856		)	(3,488		)	—		(8,350		)
	Recoveries	983			1,279			100			102			834			—		3,298
	Provision	2,147			852			601			748			3,300			—		7,648
	Balance at September 30, 2013	$	13,096		$	14,043		$	2,816		$	3,537		$	7,819		$	—	$	41,311
	Management allocates the allowance for loan and lease losses by pools of risk within each loan portfolio. The allocation of the allowance for loan and lease losses by loan portfolio is made for analytical purposes and is not necessarily indicative of the trend of future loan and lease losses in any particular category. The total allowance for loan and lease losses is available to absorb losses from any segment of the loan portfolio.

Goodwill_Core_Deposit_Premium_

Goodwill, Core Deposit Premium and Other Intangible Assets	9 Months Ended
	Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill, Core Deposit Premium and Other Intangible Assets	'
	GOODWILL, CORE DEPOSIT PREMIUM AND OTHER INTANGIBLE ASSETS
	Heartland had goodwill of $35.6 million at both September 30, 2014, and December 31, 2013. Heartland conducts its annual internal assessment of the goodwill both collectively and at its subsidiaries as of September 30.
	Other intangible assets consist of core deposit intangibles, mortgage servicing rights and customer relationship intangible. The gross carrying amount of other intangible assets and the associated accumulated amortization at September 30, 2014, and December 31, 2013, are presented in the table below, in thousands:
		September 30, 2014								December 31, 2013
		Gross			Accumulated			Net		Gross		Accumulated		Net
		Carrying			Amortization			Carrying		Carrying		Amortization		Carrying
		Amount						Amount		Amount				Amount
	Amortizing intangible assets:
	Core deposit intangibles	$	21,069		$	12,049		$	9,020	$	21,069	$	10,345	$	10,724
	Mortgage servicing rights	36,193			12,228			23,965		32,160		10,372		21,788
	Customer relationship intangible	1,177			763			414		1,177		730		447
	Total	$	58,439		$	25,040		$	33,399	$	54,406	$	21,447	$	32,959
	The following table shows the estimated future amortization expense for amortizable intangible assets, in thousands:
		Core			Mortgage			Customer
		Deposit			Servicing			Relationship
		Intangibles			Rights			Intangible		Total
	Three months ending December 31, 2014	$	476		$	1,424		$	11	$	1,911
	Year ending December 31,
	2015	1,780			5,635			42		7,457
	2016	1,575			4,830			41		6,446
	2017	1,393			4,025			40		5,458
	2018	1,232			3,220			39		4,491
	2019	1,056			2,415			38		3,509
	Thereafter	1,508			2,416			203		4,127
	Projections of amortization expense for mortgage servicing rights are based on existing asset balances and the existing interest rate environment as of September 30, 2014. Heartland's actual experience may be significantly different depending upon changes in mortgage interest rates and market conditions. Mortgage loans serviced for others were $3.36 billion and $3.05 billion as of September 30, 2014, and December 31, 2013, respectively. The fair value of Heartland's mortgage servicing rights was estimated at $33.3 million at September 30, 2014, and $32.0 million at December 31, 2013.
	Heartland's mortgage servicing rights portfolio is comprised of loans serviced for the Federal National Mortgage Association, the Federal Home Loan Mortgage Corporation, and the Government National Mortgage Association. The servicing rights portfolio is separated into 15- and 30-year tranches. At both September 30, 2014, and December 31, 2013, no valuation allowance was required for any of the tranches.
	The fair value of mortgage servicing rights is calculated based upon a discounted cash flow analysis. Cash flow assumptions, including prepayment speeds, servicing costs and escrow earnings are considered in the calculation. The average constant prepayment rate was 11.00% and 9.65% for the September 30, 2014, and December 31, 2013, valuations, respectively. The discount rate was 9.68% and 10.15% for the September 30, 2014 and December 31, 2013, valuations, respectively. The average capitalization rate for the first nine months of 2014 ranged from 0.75% to 1.39% compared to 0.79% and 1.39% for 2013. Fees collected for the servicing of mortgage loans for others were $6.4 million and $4.9 million for the nine months ended September 30, 2014, and September 30, 2013, respectively.
	The following table summarizes, in thousands, the changes in capitalized mortgage servicing rights for the nine months ended September 30, 2014 and 2013:
		2014			2013
	Balance at January 1	$	21,788		$	15,653
	Originations	5,955			10,595
	Amortization	(3,778		)	(5,548		)
	Valuation adjustment	—			496
	Balance at September 30	$	23,965		$	21,196
	Fair value of mortgage servicing rights	$	33,260		$	31,179
	Mortgage servicing rights, net to servicing portfolio	0.71		%	0.73		%

Derivative_Financial_Instrumen

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative Financial Instruments	'
	DERIVATIVE FINANCIAL INSTRUMENTS
	Heartland uses derivative financial instruments as part of its interest rate risk management strategy. As part of the strategy, Heartland considers the use of interest rate swaps, caps, floors and collars and certain interest rate lock commitments and forward sales of securities related to mortgage banking activities. Heartland's current strategy includes the use of interest rate swaps, interest rate lock commitments, and forward sales of mortgage securities. Heartland's objectives are to add stability to its net interest margin and to manage its exposure to movements in interest rates. The contract or notional amount of a derivative is used to determine, along with the other terms of the derivative, the amounts to be exchanged between the counterparties. Heartland is exposed to credit risk in the event of nonperformance by counterparties to financial instruments. Heartland minimizes this risk by entering into derivative contracts with large, stable financial institutions. Heartland has not experienced any losses from nonperformance by these counterparties. Heartland monitors counterparty risk in accordance with the provisions of ASC 815. In addition, interest rate-related derivative instruments generally contain language outlining collateral pledging requirements for each counterparty. Collateral must be posted when the market value exceeds certain threshold limits which are determined by credit ratings of each counterparty. Heartland was required to pledge $3.8 million and $5.4 million of cash as collateral at September 30, 2014, and December 31, 2013, respectively. Heartland's counterparties were required to pledge $0 and $540,000 at September 30, 2014, and December 31, 2013, respectively.
	Heartland's derivative and hedging instruments are recorded at fair value on the consolidated balance sheets. See Note 7, “Fair Value,” for additional fair value information and disclosures.
	Cash Flow Hedges
	Heartland has variable rate funding which creates exposure to variability in interest payments due to changes in interest rates. To manage the interest rate risk related to the variability of interest payments, Heartland has entered into various interest rate swap agreements. Amounts reported in accumulated other comprehensive income (loss) related to derivatives will be reclassified to interest expense as interest payments are received or made on Heartland's variable-rate liabilities. For the nine months ended September 30, 2014, the change in net unrealized losses on cash flow hedges reflects changes in the fair value of the swaps and reclassification from accumulated other comprehensive income (loss) to interest expense totaling $1.7 million. For the next twelve months, Heartland estimates that cash payments and reclassification from accumulated other comprehensive income (loss) to interest expense will total $2.3 million.
	Heartland executed an interest rate swap transaction on April 5, 2011, with an effective date of April 20, 2011, and an expiration date of April 20, 2016, to effectively convert $15.0 million of its newly issued variable rate amortizing debt to fixed rate debt. For accounting purposes, this swap transaction is designated as a cash flow hedge of the changes in cash flows attributable to changes in one-month LIBOR, the benchmark interest rate being hedged, associated with the interest payments made on an amount of Heartland's debt principal equal to the then-outstanding swap notional amount. At inception, Heartland asserted that the underlying principal balance would remain outstanding throughout the hedge transaction making it probable that sufficient LIBOR-based interest payments would exist through the maturity date of the swap.
	Heartland entered into three forward-starting interest rate swap transactions during 2009 to effectively convert Heartland Financial Statutory Trust IV, V and VII, which are variable interest rate subordinated debentures, to fixed interest rate debt. During the first quarter of 2014, the interest rate swap transaction on Heartland Financial Statutory Trust IV expired. Prior to the expiration of the swap, Heartland entered into a new forward-starting interest rate swap to replace the expiring swap. In addition, Heartland added two new forward starting interest rate swap transactions to effectively convert Morrill Statutory Trust I and Morrill Statutory Trust II, which total $16.6 million, from variable interest rate subordinated debentures to fixed interest rate debt. For accounting purposes, these five swap transactions are designated as cash flow hedges of the changes in cash flows attributable to changes in LIBOR, the benchmark interest rate being hedged, associated with the interest payments made on $85.0 million of Heartland's subordinated debentures that reset quarterly on a specified reset date. At inception, Heartland asserted that the underlying principal balance would remain outstanding throughout the hedge transaction making it probable that sufficient LIBOR-based interest payments would exist through the maturity date of the swaps.
	The table below identifies the balance sheet category and fair values of Heartland's derivative instruments designated as cash flow hedges at September 30, 2014, and December 31, 2013, in thousands:
		Notional				Fair				Balance	Receive			Weighted		Maturity
		Amount				Value				Sheet	Rate			Average
										Category				Pay Rate
	September 30, 2014
	Interest rate swap	$	10,713			$	(295	)		Other Liabilities	2.904	%		5.14	%	4/20/16
	Interest rate swap	25,000				(117		)		Other Liabilities	0.235	%		2.255	%	3/17/21
	Interest rate swap	20,000				(1,120		)		Other Liabilities	0.234	%		3.22	%	3/1/17
	Interest rate swap	20,000				(1,579		)		Other Liabilities	0.232	%		3.355	%	1/7/20
	Interest rate swap	10,000				48				Other Assets	0.235	%		1.674	%	3/26/19
	Interest rate swap	10,000				48				Other Assets	0.235	%		1.658	%	3/18/19
	December 31, 2013
	Interest rate swap	$	11,719			$	(457	)		Other Liabilities	2.917	%		5.14	%	4/20/16
	Interest rate swap	25,000				(146		)		Other Liabilities	0.244	%		2.58	%	3/17/14
	Interest rate swap	20,000				(1,507		)		Other Liabilities	0.239	%		3.22	%	3/1/17
	Interest rate swap	20,000				(1,587		)		Other Liabilities	0.243	%		3.355	%	1/7/20
	The table below identifies the gains and losses recognized on Heartland's derivative instruments designated as cash flow hedges for the three and nine months ended September 30, 2014, and September 30, 2013, in thousands:
		Effective Portion									Ineffective Portion
		Recognized in OCI				Reclassified from AOCI into Income					Recognized in Income on Derivatives
		Amount of Gain (Loss)				Category		Amount of Gain (Loss)			Category		Amount of Gain (Loss)
	Three Months Ended September 30, 2014
	Interest rate swap	$	68			Interest Expense		$	(63	)	Other Income		$	—
	Interest rate swap	193				Interest Expense		(129		)	Other Income		—
	Interest rate swap	208				Interest Expense		(153		)	Other Income		—
	Interest rate swap	248				Interest Expense		(158		)	Other Income		—
	Interest rate swap	89				Interest Expense		(37		)	Other Income		—
	Interest rate swap	88				Interest Expense		(37		)	Other Income		—
	Interest rate swap	—				Interest Expense		—			Other Income		—
	Nine Months Ended September 30, 2014
	Interest rate swap	$	162			Interest Expense		$	(192	)	Other Income		$	—
	Interest rate swap	(117		)		Interest Expense		(258		)	Other Income		—
	Interest rate swap	387				Interest Expense		(455		)	Other Income		—
	Interest rate swap	8				Interest Expense		(473		)	Other Income		—
	Interest rate swap	48				Interest Expense		(74		)	Other Income		—
	Interest rate swap	48				Interest Expense		(73		)	Other Income		—
	Interest rate swap	146				Interest Expense		(146		)	Other Income		—
	Three Months Ended September 30, 2013
	Interest rate swap	$	27			Interest Expense		$	(69	)	Other Income		$	—
	Interest rate swap	138				Interest Expense		(147		)	Other Income		—
	Interest rate swap	7				Interest Expense		(151		)	Other Income		—
	Interest rate swap	(15		)		Interest Expense		(156		)	Other Income		—
	Nine Months Ended September 30, 2013
	Interest rate swap	$	203			Interest Expense		$	(210	)	Other Income		$	—
	Interest rate swap	419				Interest Expense		(436		)	Other Income		—
	Interest rate swap	548				Interest Expense		(446		)	Other Income		—
	Interest rate swap	1,115				Interest Expense		(460		)	Other Income		—
	Mortgage Derivatives
	Heartland also has entered into interest rate lock commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans and mortgage backed securities that are considered derivative instruments. The fair value of these commitments is recorded on the consolidated balance sheets with the changes in fair value recorded in the consolidated statements of income as a component of gains on sale of loans held for sale. These derivative contracts are designated as free standing derivative contracts and are not designated against specific assets and liabilities on the consolidated balance sheets or forecasted transactions and therefore do not qualify for hedge accounting treatment.
	The table below identifies the balance sheet category and fair values of Heartland's derivative instruments not designated as hedging instruments at September 30, 2014, and December 31, 2013, in thousands:
		Balance Sheet		Notional				Fair
		Category		Amount				Value
	September 30, 2014
	Interest rate lock commitments (mortgage)	Other Assets		$	103,933			$	3,291
	Forward commitments	Other Assets		114,988				222
	Forward commitments	Other Liabilities		179,044				(623		)
	December 31, 2013
Interest rate lock commitments (mortgage)	Other Assets		$	63,370			$	1,809
Forward commitments	Other Assets		117,637				1,206
Forward commitments	Other Liabilities		53,277				(133		)
The table below identifies the income statement category of the gains and losses recognized in income on Heartland's derivative instruments not designated as hedging instruments for the three and nine months ended September 30, 2014, and September 30, 2013, in thousands:
	Income Statement		Year-to-Date
	Category		Gain (Loss) Recognized
Three Months Ended September 30, 2014
Interest rate lock commitments (mortgage)	Gains on sale of loans held for sale		$	(1,924	)
Forward commitments	Gains on sale of loans held for sale		1,505
Nine Months Ended September 30, 2014
Interest rate lock commitments (mortgage)	Gains on sale of loans held for sale		$	3,393
Forward commitments	Gains on sale of loans held for sale		(1,474		)
Three Months Ended September 30, 2013
Interest rate lock commitments (mortgage)	Gains on sale of loans held for sale		$	5,219
Forward commitments	Gains on sale of loans held for sale		(11,430		)
Nine Months Ended September 30, 2013
Interest rate lock commitments (mortgage)	Gains on sale of loans held for sale		$	(6,047	)
Forward commitments	Gains on sale of loans held for sale		(1,289		)

Fair_Value

Fair Value	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value	'
	FAIR VALUE
	Heartland utilizes fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. Securities available for sale, trading securities and derivatives are recorded in the consolidated balance sheets at fair value on a recurring basis. Additionally, from time to time, Heartland may be required to record at fair value other assets on a nonrecurring basis such as loans held for sale, loans held to maturity and certain other assets including, but not limited to, mortgage servicing rights and other real estate owned. These nonrecurring fair value adjustments typically involve application of lower of cost or fair value accounting or write-downs of individual assets.
	Fair Value Hierarchy
	Under ASC 820, assets and liabilities are grouped at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. These levels are:
	Level 1 — Valuation is based upon quoted prices for identical instruments in active markets.
	Level 2 — Valuation is based upon quoted prices for similar instruments in active markets, or similar instruments in markets that are not active, and model-based valuation techniques for all significant assumptions are observable in the market.
	Level 3 — Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques.
	The following is a description of valuation methodologies used for assets and liabilities recorded at fair value on a recurring or non-recurring basis.
	Assets
	Securities Available for Sale and Held to Maturity
	Securities available for sale are recorded at fair value on a recurring basis. Securities held to maturity are generally recorded at cost and are recorded at fair value only to the extent a decline in fair value is determined to be other-than-temporary. Fair value measurement is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security's credit rating, prepayment assumptions and other factors such as credit loss assumptions. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange, as well as U.S. Treasury securities. Level 2 securities include U.S. government and agency securities, mortgage-backed securities and private collateralized mortgage obligations, municipal bonds and corporate debt securities. Level 3 securities consist primarily of Z-TRANCHE mortgage-backed securities. On a quarterly basis, a secondary independent pricing service is used for a sample of securities to validate the pricing from Heartland's primary pricing service.
	Trading Assets
	Trading assets are recorded at fair value and consist of securities held for trading purposes. The valuation method for trading securities is the same as the methodology used for securities classified as available for sale.
	Loans Held for Sale
	Loans held for sale are carried at the lower of cost or fair value on an aggregate basis. The fair value of loans held for sale is based on what secondary markets are currently offering for portfolios with similar characteristics. As such, Heartland classifies loans held for sale subjected to nonrecurring fair value adjustments as Level 2.
	Loans Held to Maturity
	Heartland does not record loans held to maturity at fair value on a recurring basis. However, from time to time, a loan is considered impaired and an allowance for loan losses is established. Loans for which it is probable that payment of interest and principal will not be made in accordance with the contractual terms of the loan agreement are considered impaired. Once a loan is identified as individually impaired, management measures impairment in accordance with ASC 310. The fair value of impaired loans is measured using one of the following impairment methods: 1) the present value of expected future cash flows discounted at the loan's effective interest rate or 2) the observable market price of the loan or the fair value of the collateral if the loan is collateral dependent. In accordance with ASC 820, impaired loans measured at fair value are classified as nonrecurring Level 3 in the fair value hierarchy.
	Mortgage Servicing Rights
	Mortgage servicing rights assets represent the value associated with servicing residential real estate loans that have been sold to outside investors with servicing retained. Heartland uses the amortization method (i.e., the lower of amortized cost or estimated fair value measured on a nonrecurring basis), not fair value measurement accounting, to determine the carrying value of its mortgage servicing rights. The fair value for servicing assets is determined through discounted cash flow analysis and utilizes discount rates, prepayment speeds and delinquency rate assumptions as inputs. All of these assumptions require a significant degree of management estimation and judgment. Mortgage servicing rights are subject to impairment testing. The carrying values of these rights are reviewed quarterly for impairment based upon the calculation of fair value as performed by an outside third party. For purposes of measuring impairment, the rights are stratified into certain risk characteristics including note type and note term. If the valuation model reflects a fair value less than the carrying value, mortgage servicing rights are adjusted to fair value through a valuation allowance. Heartland classifies mortgage servicing rights as nonrecurring with Level 3 measurement inputs.
	Derivative Financial Instruments
	Heartland's current interest rate risk strategy includes interest rate swaps. The valuation of these instruments is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities. To comply with the provisions of ASC 820, Heartland incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty's nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, Heartland has considered the impact of netting any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees.
	Although Heartland has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, as of September 30, 2014, and December 31, 2013, Heartland has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, Heartland has determined that its derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy.
	Interest rate lock commitments
	Heartland uses an internal valuation model that relies on internally developed inputs to estimate the fair value of its interest rate lock commitments which is based on unobservable inputs that reflect management's assumptions and specific information about each borrower. Interest rate lock commitments are classified in Level 3 of the fair value hierarchy.
	Forward commitments
	The fair value of forward commitments are estimated using an internal valuation model, which includes current trade pricing for similar financial instruments in active markets that Heartland has the ability to access and are classified in Level 2 of the fair value hierarchy.
	Other Real Estate Owned
	Other real estate owned ("OREO") represents property acquired through foreclosures and settlements of loans. Property acquired is carried at the fair value of the property at the time of acquisition (representing the property's cost basis), plus any acquisition costs, or the estimated fair value of the property, less disposal costs. Heartland considers third party appraisals, as well as independent fair value assessments from realtors or persons involved in selling OREO, in determining the fair value of particular properties. Accordingly, the valuation of OREO is subject to significant external and internal judgment. Heartland periodically reviews OREO to determine if the fair value of the property, less disposal costs, has declined below its recorded book value and records any adjustments accordingly. OREO is classified as nonrecurring Level 3.
	The table below presents Heartland's assets and liabilities that are measured at fair value on a recurring basis as of September 30, 2014, and December 31, 2013, in thousands, aggregated by the level in the fair value hierarchy within which those measurements fall:
		Total Fair Value			Level 1			Level 2		Level 3
	September 30, 2014
	Assets
	Trading securities	$	—		$	—		$	—	$	—
	Securities available for sale
	U.S. government corporations and agencies	13,946			2,536			11,410		—
	Mortgage-backed securities	1,164,877			—			1,160,029		4,848
	Obligations of states and political subdivisions	185,811			—			185,811		—
	Equity securities	5,069			—			5,069		—
	Derivative financial instruments	96			—			96		—
	Interest rate lock commitments	3,291			—			—		3,291
	Forward commitments	222			—			222		—
	Total assets at fair value	$	1,373,312		$	2,536		$	1,362,637	$	8,139
	Liabilities
	Derivative financial instruments	$	3,111		$	—		$	3,111	$	—
	Forward commitments	623			—			623		—
	Total liabilities at fair value	$	3,734		$	—		$	3,734	$	—
	December 31, 2013
	Assets
	Trading securities	$	1,801		$	1,801		$	—	$	—
	Securities available for sale
	U.S. government corporations and agencies	218,303			4,084			214,219		—
	Mortgage-backed securities	1,143,947			—			1,140,649		3,298
	Obligations of states and political subdivisions	266,624			—			266,624		—
	Equity securities	5,028			—			5,028		—
	Interest rate lock commitments	1,809			—			—		1,809
	Forward commitments	1,206			—			1,206		—
	Total assets at fair value	$	1,638,718		$	5,885		$	1,627,726	$	5,107
	Liabilities
	Derivative financial instruments	$	3,697		$	—		$	3,697	$	—
	Forward commitments	133			—			133		—
	Total liabilities at fair value	$	3,830		$	—		$	3,830	$	—
	As of March 31, 2014, Heartland revised the classification of interest rate lock commitments from previous filings. In previous filings, interest rate lock commitments were classified as Level 2 under ASC 820. The resulting change in presentation does not have a material impact on the financial statements and did not affect the method by which Heartland estimates fair value, nor the resulting fair values.
	The tables below present Heartland's assets that are measured at fair value on a nonrecurring basis, in thousands:
	Fair Value Measurements at September 30, 2014
	Total			Quoted Prices in			Significant Other		Significant		Year-to-
				Active Markets for			Observable		Unobservable		Date
				Identical Assets			Inputs		Inputs		Losses
				(Level 1)			(Level 2)		(Level 3)
Collateral dependent impaired loans:
Commercial	$	1,545		$	—		$	—	$	1,545	$	112
Commercial real estate	7,058			—			—		7,058		470
Agricultural and agricultural real estate	827			—			—		827		1,428
Residential real estate	2,503			—			—		2,503		—
Consumer	3,043			—			—		3,043		9
Total collateral dependent impaired loans	$	14,976		$	—		$	—	$	14,976	$	2,019
Other real estate owned	$	20,475		$	—		$	—	$	20,475	$	1,365
	Fair Value Measurements at December 31, 2013
	Total			Quoted Prices in			Significant Other		Significant		Year-to-
				Active Markets for			Observable		Unobservable		Date
				Identical Assets			Inputs		Inputs		Losses
				(Level 1)			(Level 2)		(Level 3)
Collateral dependent impaired loans:
Commercial	$	7,229		$	—		$	—	$	7,229	$	919
Commercial real estate	7,749			—			—		7,749		1,881
Agricultural and agricultural real estate	13,062			—			—		13,062		—
Residential real estate	3,396			—			—		3,396		—
Consumer	1,763			—			—		1,763		—
Total collateral dependent impaired loans	$	33,199		$	—		$	—	$	33,199	$	2,800
Other real estate owned	$	29,852		$	—		$	—	$	29,852	$	2,799
The following tables present additional quantitative information about assets measured at fair value and for which Heartland has utilized Level 3 inputs to determine fair value, in thousands:
	Quantitative Information About Level 3 Fair Value Measurements
	Fair Value			Valuation		Unobservable	Range
	at 9/30/14			Technique		Input	(Weighted Average)
Z-TRANCHE Securities	$	4,848		Discounted cash flows		Pretax discount rate	6.50 - 8.00%
						Actual defaults	12.71-20.14% (15.52%)
						Actual deferrals	6.25-22.35% (11.32%)
Interest rate lock commitments	3,291			Discounted cash flows		Closing ratio	(1)
Collateral dependent impaired loans:
Commercial	1,545			Modified appraised value		Third party appraisal	(2)
						Appraisal discount	(2)
Commercial real estate	7,058			Modified appraised value		Third party appraisal	(2)
						Appraisal discount	(2)
Agricultural and agricultural real estate	827			Modified appraised value		Third party appraisal	(2)
						Appraisal discount	(2)
Residential real estate	2,503			Modified appraised value		Third party appraisal	(2)
						Appraisal discount	(2)
Consumer	3,043			Modified appraised value		Third party appraisal	(2)
						Appraisal discount	(2)
Other real estate owned	20,475			Modified appraised value		Third party appraisal	(2)
						Appraisal discount
(1) The significant unobservable input used in the fair value measurement is the closing ratio, which represents the percentage of loans currently in a lock position which management estimates will ultimately close. The closing ratio calculation takes into consideration historical data and loan-level data; therefore providing a range would not be meaningful. The weighted average closing ratio at September 30, 2014 was 84%.
(2) Third party appraisals are obtained as to the value of the underlying asset, but disclosure of this information would not provide meaningful information, as the range will vary widely from loan to loan. Types of discounts considered included age of the appraisal, local market conditions, current condition of the property, and estimated sales costs. These discounts will also vary from loan to loan, thus providing range would not be meaningful.
	Quantitative Information About Level 3 Fair Value Measurements
	Fair Value			Valuation		Unobservable	Range
	at 12/31/13			Technique		Input	(Weighted Average)
Z-TRANCHE Securities	$	3,298		Discounted cash flows		Pretax discount rate	7.00 - 9.00%
						Actual defaults	12.50-28.20% (20.80%)
						Actual deferrals	6.10-16.00% (11.10%)
Interest rate lock commitments	1,809			Discounted cash flows		Closing ratio	(1)
Collateral dependent impaired loans:
Commercial	7,229			Modified appraised value		Third party appraisal	(2)
						Appraisal discount	(2)
Commercial real estate	7,749			Modified appraised value		Third party appraisal	(2)
						Appraisal discount	(2)
Agricultural and agricultural real estate	13,062			Modified appraised value		Third party appraisal	(2)
						Appraisal discount	(2)
Residential real estate	3,396			Modified appraised value		Third party appraisal	(2)
						Appraisal discount	(2)
Consumer	1,763			Modified appraised value		Third party appraisal	(2)
						Appraisal discount	(2)
Other real estate owned	29,852			Modified appraised value		Third party appraisal	(2)
						Appraisal discount
(1) The significant unobservable input used in the fair value measurement is the closing ratio, which represents the percentage of loans currently in a lock position which management estimates will ultimately close. The closing ratio calculation takes into consideration historical data and loan-level data; therefore providing a range would not be meaningful. The weighted average closing ratio at December 31, 2013 was 87%.
(2) Third party appraisals are obtained as to the value of the underlying asset, but disclosure of this information would not provide meaningful information, as the range will vary widely from loan to loan. Types of discounts considered included age of the appraisal, local market conditions, current condition of the property, and estimated sales costs. These discounts will also vary from loan to loan, thus providing range would not be meaningful.
The changes in fair value of the Z-TRANCHE, a Level 3 asset, that is measured on a recurring basis is summarized in the following table, in thousands:
	For the Nine Months Ended			For the Year Ended
	30-Sep-14			31-Dec-13
Balance at January 1,	$	3,298		$	4,089
Total gains (losses):
Included in earnings	—			(1,587		)
Included in other comprehensive income	1,669			826
Purchases, issuances, sales and settlements:
Purchases	—			—
Sales	(119		)	(30		)
Settlements	—			—
Balance at period end	$	4,848		$	3,298
The changes in fair value of the interest rate lock commitments, which are Level 3 financial instruments and are measured on a recurring basis, are summarized in the following table, in thousands:
	For the Nine Months Ended			For the Year Ended
	30-Sep-14			31-Dec-13
Balance at January 1,	$	1,809		$	9,353
Total gains (losses) included in earnings	3,393			(10,518		)
Issuances	1,798			9,821
Settlements	(3,709		)	(6,847		)
Balance at period end	$	3,291		$	1,809
Gains included in gains (losses) on sales of loans held for sale attributable to interest rate lock commitments held at September 30, 2014, and December 31, 2013, were $3.3 million and $1.8 million, respectively.
The tables below summarize the estimated fair value of Heartland's financial instruments as defined by ASC 825 as of September 30, 2014, and December 31, 2013, in thousands. The carrying amounts in the following tables are recorded in the consolidated balance sheets under the indicated captions. In accordance with ASC 825, the assets and liabilities that are not financial instruments are not included in the disclosure, such as the value of the mortgage servicing rights, premises, furniture and equipment, goodwill and other intangibles and other liabilities.
Heartland does not believe that the estimated information presented herein is representative of the earnings power or value of Heartland. The following analysis, which is inherently limited in depicting fair value, also does not consider any value associated with either existing customer relationships or the ability of Heartland to create value through loan origination, deposit gathering or fee generating activities. Many of the estimates presented herein are based upon the use of highly subjective information and assumptions and, accordingly, the results may not be precise. Management believes that fair value estimates may not be comparable between financial institutions due to the wide range of permitted valuation techniques and numerous estimates which must be made. Furthermore, because the disclosed fair value amounts were estimated as of the balance sheet date, the amounts actually realized or paid upon maturity or settlement of the various financial instruments could be significantly different.
							Fair Value Measurements at
							30-Sep-14
	Carrying			Estimated			Quoted Prices in		Significant Other		Significant
	Amount			Fair			Active Markets for		Observable		Unobservable
				Value			Identical Assets		Inputs		Inputs
							(Level 1)		(Level 2)		(Level 3)
Financial assets:
Cash and cash equivalents	$	67,836		$	67,836		$	67,836	$	—	$	—
Time deposits in other financial institutions	2,605			2,605			2,605		—		—
Securities:
Trading	—			—			—		—		—
Available for sale	1,369,703			1,369,703			2,536		1,362,319		4,848
Held to maturity	255,312			266,641			—		266,641		—
Other investments	20,514			20,514			—		20,279		235
Loans held for sale	93,054			93,054			—		93,054		—
Loans, net:
Commercial	1,012,918			1,004,481			—		1,002,936		1,545
Commercial real estate	1,668,969			1,682,042			—		1,674,984		7,058
Agricultural and agricultural real estate	401,785			388,171			—		387,344		827
Residential real estate	357,658			329,916			—		327,413		2,503
Consumer	319,126			312,399			—		309,356		3,043
Total Loans, net	3,760,456			3,717,009			—		3,702,033		14,976
Derivative financial instruments	96			96			—		96		—
Interest rate lock commitments	3,291			3,291			—		—		3,291
Forward commitments	222			222			—		222		—
Financial liabilities:
Deposits
Demand deposits	1,274,439			1,274,439			—		1,274,439		—
Savings deposits	2,599,850			2,599,850			—		2,599,850		—
Time deposits	852,430			852,430			—		852,430		—
Short term borrowings	348,305			348,305			—		348,305		—
Other borrowings	334,513			339,338			—		339,338		—
Derivative financial instruments	3,111			3,111			—		3,111		—
Forward commitments	623			623			—		623		—
							Fair Value Measurements at
							31-Dec-13
	Carrying			Estimated			Quoted Prices in		Significant Other		Significant
	Amount			Fair			Active Markets for		Observable		Unobservable
				Value			Identical Assets		Inputs		Inputs
							(Level 1)		(Level 2)		(Level 3)
Financial assets:
Cash and cash equivalents	$	125,270		$	125,270		$	125,270	$	—	$	—
Securities:
Trading	1,801			1,801			1,801		—		—
Available for sale	1,633,902			1,633,902			4,084		1,626,520		3,298
Held to maturity	237,498			237,437			—		237,437		—
Other investments	21,843			21,843			—		21,608		235
Loans held for sale	46,665			46,665			—		46,665		—
Loans, net:
Commercial	936,305			930,501			—		923,272		7,229
Commercial real estate	1,516,352			1,512,773			—		1,505,024		7,749
Agricultural and agricultural real estate	374,203			378,086			—		365,024		13,062
Residential real estate	347,266			335,362			—		331,966		3,396
Consumer	286,890			273,139			—		271,376		1,763
Total Loans, net	3,461,016			3,429,861			—		3,396,662		33,199
Derivative financial instruments	—			—			—		—		—
Interest rate lock commitments	1,809			1,809			—		—		1,809
Forward commitments	1,206			1,206			—		1,206		—
Financial liabilities:
Deposits
Demand deposits	1,238,581			1,238,581			—		1,238,581		—
Savings deposits	2,535,242			2,535,242			—		2,535,242		—
Time deposits	892,676			892,676			—		892,676		—
Short term borrowings	408,756			408,756			—		408,756		—
Other borrowings	350,109			355,923			—		355,923		—
Derivative financial instruments	3,697			3,697			—		3,697		—
Forward commitments	133			133			—		133		—
Cash and Cash Equivalents — The carrying amount is a reasonable estimate of fair value due to the short-term nature of these instruments.
Time Deposits in Other Financial Institutions — The carrying amount is a reasonable estimate of fair value due to the short-term nature of these instruments.
Securities — For securities either held to maturity, available for sale or trading, fair value equals quoted market price if available. If a quoted market price is not available, fair value is estimated using quoted market prices for similar securities. For Level 3 securities, Heartland utilizes independent pricing provided by third party vendors or brokers.
Other Investments — Fair value measurement of other investments, which consists primarily of FHLB stock, are based on their redeemable value, which is at cost due to the restrictions placed on their transferability. The market for these securities is restricted to the issuer of the stock and subject to impairment evaluation.
Loans and Leases — The fair value of loans is estimated using an entrance price concept by discounting the future cash flows using the current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining maturities. The fair value of impaired loans is measured using the present value of expected future cash flows discounted at the loan's effective interest rate or the fair value of the underlying collateral. The fair value of loans held for sale is estimated using quoted market prices.
Interest Rate Lock Commitments — The fair value of interest rate lock commitments is estimated using an internal valuation model, which includes grouping the interest rate lock commitments by interest rate and terms, applying an estimated closing ratio based on historical experience, and then multiplying by quoted investor prices determined to be reasonably applicable to the loan commitment groups based on interest rate, terms, and rate lock expiration dates of the loan commitment group.
Forward Commitments — The fair value of these instruments is estimated using an internal valuation model, which includes current trade pricing for similar financial instruments.
Derivative Financial Instruments — The fair value of all derivatives is estimated based on the amount that Heartland would pay or would be paid to terminate the contract or agreement, using current rates and, when appropriate, the current creditworthiness of the counter-party.
Deposits — The fair value of demand deposits, savings accounts and certain money market deposits is the amount payable on demand at the reporting date. The fair value of fixed maturity certificates of deposit is estimated using the rates currently offered for deposits of similar remaining maturities. If the fair value of the fixed maturity certificates of deposit is calculated at less than the carrying amount, the carrying value of these deposits is reported as the fair value.
Short-term and Other Borrowings — Rates currently available to Heartland for debt with similar terms and remaining maturities are used to estimate fair value of existing debt.
Commitments to Extend Credit, Unused Lines of Credit and Standby Letters of Credit — Based upon management's analysis of the off balance sheet financial instruments, there are no significant unrealized gains or losses associated with these financial instruments based upon review of the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the present creditworthiness of the counterparties.

Segment_Reporting

Segment Reporting	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Segment Reporting	'
	SEGMENT REPORTING
	Heartland has identified two operating segments for purposes of financial reporting: community and other banking and retail mortgage banking. These segments were determined based on the products and services provided or the type of customers served and are consistent with the information used by Heartland's key decision makers to make operating decisions and to assess Heartland's performance. The following tables present financial information from Heartland's operating segments for the three and nine month periods ended September 30, 2014, and 2013, in thousands.
		Three Months Ended
		September 30,
		2014							2013
		Community		Retail			Total		Community		Retail			Total
		and Other		Mortgage					and Other		Mortgage
		Banking		Banking					Banking		Banking
	Net interest income	$	50,790	$	701		$	51,491	$	39,292	$	588		$	39,880
	Provision for loan losses	2,553		—			2,553		5,149		—			5,149
	Total noninterest income	11,124		9,038			20,162		11,971		8,408			20,379
	Total noninterest expense	42,784		11,427			54,211		35,511		11,297			46,808
	Income (loss) before taxes	$	16,577	$	(1,688	)	$	14,889	$	10,603	$	(2,301	)	$	8,302
	Average Loans, for the period	$	3,736,917	$	75,301		$	3,812,218	$	2,867,933	$	69,575		$	2,937,508
	Segment Assets, at period end	$	5,817,427	$	117,382		$	5,934,809	$	4,825,781	$	86,949		$	4,912,730
		Nine Months Ended
		September 30,
		2014							2013
		Community		Retail			Total		Community		Retail			Total
		and Other		Mortgage					and Other		Mortgage
		Banking		Banking					Banking		Banking
	Net interest income	$	148,930	$	1,972		$	150,902	$	115,968	$	1,503		$	117,471
	Provision for loan losses	11,635		—			11,635		7,648		—			7,648
	Total noninterest income	33,720		25,906			59,626		35,190		34,414			69,604
	Total noninterest expense	127,743		32,744			160,487		104,199		36,021			140,220
	Income (loss) before taxes	$	43,272	$	(4,866	)	$	38,406	$	39,311	$	(104	)	$	39,207
	Average Loans, for the period	$	3,629,822	$	62,896		$	3,692,718	$	2,820,418	$	86,552		$	2,906,970
	Segment Assets, at period end	$	5,817,427	$	117,382		$	5,934,809	$	4,825,781	$	86,949		$	4,912,730

Basis_of_Presentation_Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Earnings Per Share	'
	Earnings Per Share
	Basic earnings per share is determined using net income available to common stockholders and weighted average common shares outstanding. Diluted earnings per share is computed by dividing net income available to common stockholders by the weighted average common shares and assumed incremental common shares issued.
Effect of New Financial Accounting Standards	'
	Effect of New Financial Accounting Standards
	In July 2013, the FASB issued ASU No. 2013-11, "Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists," to eliminate the diversity in practice and to increase the comparability of financial statements among companies. The guidance requires that a reporting entity generally must show an unrecognized tax benefit, or a portion of an unrecognized tax benefit, for a net operating loss carryforward, similar tax loss or a tax credit carryforward as a reduction of a deferred tax asset. However, the entity should present the unrecognized tax benefit as a liability and not as a reduction of a deferred tax asset if the carryforward or tax loss is not available on the financial statement date to settle any additional income tax liability that would result from the disallowance of the tax position under the applicable tax law, or the applicable tax law does not require the company to use, and the company does not intend to use, the carryforward or tax loss to settle additional income taxes resulting from the disallowance of the tax position. The guidance does not require any new recurring disclosures because it does not affect the recognition or measurement of uncertain tax positions. Heartland adopted this standard on January 1, 2014, and the adoption did not have a material impact on the results of operations, financial position, and liquidity.
	In January 2014, the FASB issued ASU 2014-01, "Accounting for Investments in Qualified Affordable Housing Projects." The amendments in ASU 2014-01 to Topic 323, "Equity Investments and Joint Ventures," provide guidance on accounting for investments by a reporting entity in flow-through limited liability entities that manage or invest in affordable housing projects that qualify for the low-income housing tax credit. The amendments permit reporting entities to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense (benefit). The amendments are effective for fiscal years, and interim periods within those years, beginning after December 31, 2014, and should be applied retrospectively to all periods presented. Early adoption is permitted. Heartland is in the process of evaluating the impact that adoption of this guidance will have on the results of operations, financial position, and liquidity.
	In January 2014, the FASB issued ASU 2014-04, "Receivables-Troubled Debt Restructurings by Creditors: Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans Upon Foreclosure." The amendments in ASU 2014-04 clarify that an in-substance foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (i) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (ii) the borrower conveying all interest in the residential real estate property to the creditor to satisfy the loan through completion of a deed in lieu of foreclosure or similar legal agreement. ASU 2014-04 also requires disclosure of both the amount of foreclosed residential real estate property held by the creditor and the recorded investment in loans collateralized by residential real estate property that are in the process of foreclosure. The amendments are effective for fiscal years, and interim periods within those years, beginning after December 15, 2014, with early adoption permitted. Once adopted, an entity can elect either (i) a modified retrospective transition method or (ii) a prospective transition method. The modified retrospective transition method is applied by means of a cumulative-effect adjustment to residential mortgage loans and foreclosed residential real estate properties existing as of the beginning of the period for which the amendments of ASU 2014-04 are effective, with real estate reclassified to loans measured at the carrying value of the real estate at the date of adoption and loans reclassified to real estate measured at the lower of net carrying value of the loan or the fair value of the real estate less costs to sell at the date of adoption. The prospective transition method is applied by means of applying the amendments of ASU 2014-04 to all instances of receiving physical possession of residential real estate properties that occur after the date of adoption. Heartland does not expect the adoption of this standard to have a material impact on the results of operations, financial position, and liquidity.
	In August 2014, the FASB issued ASU 2014-14, "Receivables-Troubled Debt Restructurings by Creditors: Classification of Certain Government-Guaranteed Mortgage Loans Upon Foreclosure." The amendment clarifies how creditors are to classify certain government-guaranteed mortgage loans upon foreclosure. The amendment requires that a mortgage loan be derecognized and a separate other receivable be recognized upon foreclosure if the following conditions are met: (1) the loan has a government guarantee that is not separate from the loan before foreclosure, and (2) at the time of foreclosure, the creditor has the intent to convey the real estate property to the guarantor and make a claim on the guarantee, and the creditor has the ability to recover under the claim, and (3) at the time of foreclosure, any amount of the claim that is determined on the basis of the fair value of the real estate is fixed. Upon foreclosure, the separate other receivable should be measured on the amount of the loan balance (principal and interest) expected to be recovered for the guarantor. This amendment is effective for annual reporting periods, and interim reporting periods within those years, beginning after December 15, 2014, with early adoption permitted. Heartland does not expect the adoption of this standard to have a material impact on the results of operations, financial position, and liquidity.

Basis_of_Presentation_Tables

Basis of Presentation (Tables)	9 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Schedule of Earnings Per Share, Basic and Diluted	'
	Amounts used in the determination of basic and diluted earnings per share for the three month and nine months ended September 30, 2014 and 2013, are shown in the table below:
		Three Months Ended
		September 30,
	(Dollars and number of shares in thousands, except per share data)	2014				2013
	Net income attributable to Heartland	$	11,973			$	6,810
	Preferred dividends and discount	(205		)		(276		)
	Net income available to common stockholders	$	11,768			$	6,534
	Weighted average common shares outstanding for basic earnings per share	18,469				16,936
	Assumed incremental common shares issued for common stock equivalents	284				285
	Weighted average common shares for diluted earnings per share	18,753				17,221
	Earnings per common share — basic	$	0.64			$	0.39
	Earnings per common share — diluted	$	0.63			$	0.38
	Number of antidilutive common stock equivalents excluded from diluted earnings per share computation	94				105
		Nine Months Ended
		September 30,
	(Dollars and number of shares in thousands, except per share data)	2014				2013
	Net income attributable to Heartland	$	29,637			$	28,854
	Preferred dividends and discount	(613		)		(889		)
	Net income available to common stockholders	$	29,024			$	27,965
	Weighted average common shares outstanding for basic earnings per share	18,456				16,904
	Assumed incremental common shares issued for common stock equivalents	287				279
	Weighted average common shares for diluted earnings per share	18,743				17,183
	Earnings per common share — basic	$	1.57			$	1.65
	Earnings per common share — diluted	$	1.55			$	1.63
	Number of antidilutive common stock equivalents excluded from diluted earnings per share computation	94				105
Summary of RSUs	'
	A summary of the status of the RSUs as of September 30, 2014 and 2013, and changes during the nine months ended September 30, 2014 and 2013, follows:
		2014							2013
		Shares			Weighted-Average Grant Date				Shares		Weighted-Average Grant Date
					Fair Value						Fair Value
	Outstanding at January 1	353,070			$	18.62			348,897		$	15.75
	Granted	133,139			26.65				126,685		26.92
	Vested	(74,521	)		16.95				(43,388	)	17
	Forfeited	(7,483	)		20.22				(57,982	)	19.08
	Outstanding at September 30	404,205			$	21.44			374,212		$	19.02
Schedule of Status of Stock Options	'
	A summary of the status of the stock options as of September 30, 2014 and 2013, and changes during the nine months ended September 30, 2014 and 2013, follows:
		2014							2013
		Shares			Weighted-Average				Shares		Weighted-Average
					Exercise Price						Exercise Price
	Outstanding at January 1	261,936			$	23.6			377,907		$	22.62
	Granted	—			—				—		—
	Exercised	(9,750	)		19.67				(68,586	)	19.54
	Forfeited	(7,000	)		26.62				(1,800	)	26.68
	Outstanding at September 30	245,186			$	23.67			307,521		$	23.28
	Options exercisable at September 30	245,186			$	23.67			307,521		$	23.28

Securities_Tables

Securities (Tables)	9 Months Ended
	Sep. 30, 2014
Investments, Debt and Equity Securities [Abstract]	'
Available-for-sale Securities	'
	The amortized cost, gross unrealized gains and losses, and estimated fair values of securities available for sale as of September 30, 2014, and December 31, 2013, are summarized in the table below, in thousands:
		Amortized			Gross			Gross			Estimated
		Cost			Unrealized			Unrealized			Fair
					Gains			Losses			Value
	September 30, 2014
	U.S. government corporations and agencies	$	13,884		$	74		$	(12	)	$	13,946
	Mortgage-backed securities	1,166,166			10,403			(11,692		)	1,164,877
	Obligations of states and political subdivisions	180,998			5,680			(867		)	185,811
	Total debt securities	1,361,048			16,157			(12,571		)	1,364,634
	Equity securities	5,021			48			—			5,069
	Total	$	1,366,069		$	16,205		$	(12,571	)	$	1,369,703
	December 31, 2013
	U.S. government corporations and agencies	$	220,157		$	147		$	(2,001	)	$	218,303
	Mortgage-backed securities	1,156,983			9,538			(22,574		)	1,143,947
	Obligations of states and political subdivisions	277,320			1,706			(12,402		)	266,624
	Total debt securities	1,654,460			11,391			(36,977		)	1,628,874
	Equity securities	4,996			32			—			5,028
	Total	$	1,659,456		$	11,423		$	(36,977	)	$	1,633,902
Held-to-maturity Securities	'
	The amortized cost, gross unrealized gains and losses and estimated fair values of held to maturity securities as of September 30, 2014, and December 31, 2013, are summarized in the table below, in thousands:
		Amortized			Gross			Gross			Estimated
		Cost			Unrealized			Unrealized			Fair
					Gains			Losses			Value
	September 30, 2014
	Mortgage-backed securities	$	5,805		$	263		$	(533	)	$	5,535
	Obligations of states and political subdivisions	249,507			12,914			(1,315		)	261,106
	Total	$	255,312		$	13,177		$	(1,848	)	$	266,641
	December 31, 2013
	Mortgage-backed securities	$	5,973		$	199		$	(321	)	$	5,851
	Obligations of states and political subdivisions	231,525			5,801			(5,740		)	231,586
	Total	$	237,498		$	6,000		$	(6,061	)	$	237,437
Investments Classified by Contractual Maturity Date	'
	The amortized cost and estimated fair value of debt securities available for sale at September 30, 2014, by contractual maturity are as follows, in thousands. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without penalties.
		Amortized Cost			Estimated Fair Value
	Due in 1 year or less	$	8,440		$	8,525
	Due in 1 to 5 years	19,027			19,184
	Due in 5 to 10 years	83,717			86,936
	Due after 10 years	83,698			85,112
	Total debt securities	194,882			199,757
	Mortgage-backed securities	1,166,166			1,164,877
	Equity securities	5,021			5,069
	Total investment securities	$	1,366,069		$	1,369,703
	The amortized cost and estimated fair value of debt securities held to maturity at September 30, 2014, by contractual maturity are as follows, in thousands. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without penalties.
		Amortized Cost			Estimated Fair Value
	Due in 1 year or less	$	—		$	—
	Due in 1 to 5 years	13,062			13,910
	Due in 5 to 10 years	47,769			50,227
	Due after 10 years	188,676			196,969
	Total debt securities	249,507			261,106
	Mortgage-backed securities	5,805			5,535
	Total investment securities	$	255,312		$	266,641
Schedule of Realized Gain (Loss)	'
	Gross gains and losses realized related to the sales of securities available for sale for the three and nine months ended September 30, 2014, and 2013, are summarized as follows, in thousands:
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2014			2013			2014			2013
	Proceeds from sales	$	189,939		$	127,475		$	699,830		$	343,410
	Gross security gains	1,101			1,420			4,547			7,703
	Gross security losses	276			302			2,087			1,091
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	'
	The following tables summarize, in thousands, the amount of unrealized losses, defined as the amount by which cost or amortized cost exceeds fair value, and the related fair value of investments with unrealized losses in Heartland's securities portfolio as of September 30, 2014, and December 31, 2013. The investments were segregated into two categories: those that have been in a continuous unrealized loss position for less than 12 months and those that have been in a continuous unrealized loss position for 12 or more months. The reference point for determining how long an investment was in an unrealized loss position was September 30, 2013, and December 31, 2012, respectively. Securities for which Heartland has taken credit-related OTTI write-downs are categorized as being "less than 12 months" or "12 months or longer" in a continuous loss position based on the point in time that the fair value declined to below the cost basis and not the period of time since the credit-related OTTI write-down.
	Securities available for sale	Less than 12 months						12 months or longer						Total
		Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
		Value			Losses			Value			Losses			Value		Losses
	September 30, 2014
	U.S. government corporations and agencies	$	—		$	—		$	978		$	(12	)	$	978	$	(12	)
	Mortgage-backed securities	514,918			(5,627		)	296,255			(6,065		)	811,173		(11,692		)
	Obligations of states and political subdivisions	886			(6		)	42,344			(861		)	43,230		(867		)
	Total temporarily impaired securities	$	515,804		$	(5,633	)	$	339,577		$	(6,938	)	$	855,381	$	(12,571	)
	December 31, 2013
	U.S. government corporations and agencies	$	196,345		$	(2,001	)	$	—		$	—		$	196,345	$	(2,001	)
	Mortgage-backed securities	640,684			(17,064		)	118,229			(5,510		)	758,913		(22,574		)
	Obligations of states and political subdivisions	196,987			(11,452		)	10,714			(950		)	207,701		(12,402		)
	Total temporarily impaired securities	$	1,034,016		$	(30,517	)	$	128,943		$	(6,460	)	$	1,162,959	$	(36,977	)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	'
	Securities held to maturity	Less than 12 months						12 months or longer						Total
		Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
		Value			Losses			Value			Losses			Value		Losses
	September 30, 2014
	Mortgage-backed securities	$	—		$	—		$	2,861		$	(533	)	$	2,861	$	(533	)
	Obligations of states and political subdivisions	1,577			(390		)	36,412			(925		)	37,989		(1,315		)
	Total temporarily impaired securities	$	1,577		$	(390	)	$	39,273		$	(1,458	)	$	40,850	$	(1,848	)
	December 31, 2013
	Mortgage-backed securities	$	2,170		$	(319	)	$	834		$	(2	)	$	3,004	$	(321	)
	Obligations of states and political subdivisions	47,175			(3,508		)	21,505			(2,232		)	68,680		(5,740		)
	Total temporarily impaired securities	$	49,345		$	(3,827	)	$	22,339		$	(2,234	)	$	71,684	$	(6,061	)
Other than Temporary Impairment, Credit Losses Recognized in Earnings	'
	The following table shows the detail of OTTI write-downs on debt securities included in earnings and the related changes in other accumulated comprehensive income ("AOCI") for the same securities, in thousands:
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2014			2013			2014			2013
	Recorded as part of gross realized losses:
	Credit related OTTI	$	—		$	—		$	—		$	—
	Intent to sell OTTI	—			—			—			—
	Total recorded as part of gross realized losses	—			—			—			—
	Recorded directly to AOCI for non-credit related impairment:
	Residential mortgage backed securities	—			—			—			—
	Accretion of non-credit related impairment	(24		)	(24		)	(72		)	(72		)
	Total changes to AOCI for non-credit related impairment	(24		)	(24		)	(72		)	(72		)
	Total OTTI losses (accretion) recorded on debt securities, net	$	(24	)	$	(24	)	$	(72	)	$	(72	)

Loans_and_Leases_Tables

Loans and Leases (Tables)	9 Months Ended
	Sep. 30, 2014
Receivables [Abstract]	'
Loans and Leases	'
	Loans and leases as of September 30, 2014, and December 31, 2013, were as follows, in thousands:
		September 30, 2014				December 31, 2013
	Loans and leases receivable held to maturity:
	Commercial	$	1,024,712			$	950,197
	Commercial real estate	1,684,832				1,529,683
	Agricultural and agricultural real estate	404,423				376,735
	Residential real estate	360,309				349,349
	Consumer	326,148				294,145
	Gross loans and leases receivable held to maturity	3,800,424				3,500,109
	Unearned discount	(98		)		(168		)
	Deferred loan fees	(2,021		)		(2,989		)
	Total net loans and leases receivable held to maturity	3,798,305				3,496,952
	Loans covered under loss share agreements:
	Commercial and commercial real estate	1,188				2,314
	Agricultural and agricultural real estate	573				543
	Residential real estate	1,762				2,280
	Consumer	327				612
	Total loans covered under loss share agreements	3,850				5,749
	Allowance for loan and lease losses	(41,698		)		(41,685		)
	Loans and leases receivable, net	$	3,760,457			$	3,461,016
Allowance for Loan and Lease Losses, Based on Impairment Methodology	'
	All other loans are collectively evaluated for impairment under ASC 450-20. Heartland has made no significant changes to the accounting for the allowance for loan and lease losses policy during 2014.
		Allowance For Loan and Lease Losses												Gross Loans and Leases Receivable Held to Maturity
		Ending Balance				Ending Balance				Total				Ending Balance Evaluated for Impairment				Ending Balance Evaluated for Impairment				Total
		Under ASC				Under ASC								Under ASC				Under ASC
		310-10-35				450-20								310-10-35				450-20
	September 30, 2014
	Commercial	$	451			$	10,904			$	11,355			$	8,278			$	1,016,434			$	1,024,712
	Commercial real estate	1,176				14,969				16,145				33,280				1,651,552				1,684,832
	Agricultural and agricultural real estate	67				3,049				3,116				5,689				398,734				404,423
	Residential real estate	424				3,199				3,623				8,187				352,122				360,309
	Consumer	1,287				5,966				7,253				6,150				319,998				326,148
	Unallocated	—				206				206				—				—				—
	Total	$	3,405			$	38,293			$	41,698			$	61,584			$	3,738,840			$	3,800,424
	December 31, 2013
	Commercial	$	2,817			$	10,282			$	13,099			$	14,644			$	935,553			$	950,197
	Commercial real estate	818				13,334				14,152				28,299				1,501,384				1,529,683
	Agricultural and agricultural real estate	756				2,236				2,992				16,667				360,068				376,735
	Residential real estate	605				3,115				3,720				7,214				342,135				349,349
	Consumer	1,721				6,001				7,722				5,137				289,008				294,145
	Unallocated	—				—				—				—				—				—
	Total	$	6,717			$	34,968			$	41,685			$	71,961			$	3,428,148			$	3,500,109
Schedule of Financing Receivables, Non Accrual Status	'
	The following table presents nonaccrual loans, accruing loans past due 90 days or more and troubled debt restructured loans not covered under loss share agreements at September 30, 2014, and December 31, 2013, in thousands. There were no nonaccrual leases, accruing leases past due 90 days or more or restructured leases at September 30, 2014, and December 31, 2013.
		September 30, 2014				31-Dec-13
	Nonaccrual loans	$	25,802			$	29,313
	Nonaccrual troubled debt restructured loans	4,328				13,081
	Total nonaccrual loans	$	30,130			$	42,394
	Accruing loans past due 90 days or more	$	—			$	24
	Performing troubled debt restructured loans	$	11,994			$	19,353
Troubled Debt Restructurings on Financing Receivables	'
	The following tables provide information on troubled debt restructured loans that were modified during the three and nine months ended September 30, 2014, and September 30, 2013, dollars in thousands:
		Three Months Ended
		September 30,
		2014											2013
		Number			Pre-				Post-				Number			Pre-				Post-
		of Loans			Modification				Modification				of Loans			Modification				Modification
					Recorded				Recorded							Recorded				Recorded
					Investment				Investment							Investment				Investment
	Commercial	—			$	—			$	—			—			$	—			$	—
	Commercial real estate	—			—				—				—			—				—
	Total commercial and commercial real estate	—			—				—				—			—				—
	Agricultural and agricultural real estate	1			60				60				—			—				—
	Residential real estate	—			—				—				1			65				65
	Consumer	—			—				—				—			—				—
	Total	1			$	60			$	60			1			$	65			$	65
		Nine Months Ended
		September 30,
		2014											2013
		Number			Pre-				Post-				Number			Pre-				Post-
		of Loans			Modification				Modification				of Loans			Modification				Modification
					Recorded				Recorded							Recorded				Recorded
					Investment				Investment							Investment				Investment
	Commercial	—			$	—			$	—			3			$	17,873			$	17,873
	Commercial real estate	1			298				298				—			—				—
	Total commercial and commercial real estate	1			298				298				3			17,873				17,873
	Agricultural and agricultural real estate	3			3,417				3,417				3			2,576				2,576
	Residential real estate	1			38				38				4			762				762
	Consumer	—			—				—				1			166				166
	Total	5			$	3,753			$	3,753			11			$	21,377			$	21,377
Troubled Debt Restructured Loans with Payment Default	'
	The following tables provide information on troubled debt restructured loans for which there was a payment default during the three months and nine months ended September 30, 2014, and September 30, 2013, in thousands, that had been modified during the twelve month period prior to the default:
		With Payment Defaults During the Following Periods
		Three Months Ended
		September 30,
		2014							2013
		Number of Loans			Recorded Investment				Number of Loans			Recorded Investment
	Commercial	—			$	—			1			$	13,000
	Commercial real estate	—			—				—			—
	Total commercial and commercial real estate	—			—				1			13,000
	Agricultural and agricultural real estate	1			60				—			—
	Residential real estate	—			—				—			—
	Consumer	—			—				—			—
	Total	1			$	60			1			$	13,000
		With Payment Defaults During the Following Periods
		Nine Months Ended
		September 30,
		2014							2013
		Number of Loans			Recorded Investment				Number of Loans			Recorded Investment
	Commercial	—			$	—			2			$	17,670
	Commercial real estate	—			—				—			—
	Total commercial and commercial real estate	—			—				2			17,670
	Agricultural and agricultural real estate	1			60				—			—
	Residential real estate	—			—				2			167
	Consumer	—			—				—			—
	Total	1			$	60			4			$	17,837
Financing Receivable Credit Quality Indicators	'
	The following table presents loans and leases not covered by loss share agreements by credit quality indicator at September 30, 2014, and December 31, 2013, in thousands:
		Pass				Nonpass				Total
	September 30, 2014
	Commercial	$	913,923			$	110,789			$	1,024,712
	Commercial real estate	1,536,940				147,892				1,684,832
	Total commercial and commercial real estate	2,450,863				258,681				2,709,544
	Agricultural and agricultural real estate	377,733				26,690				404,423
	Residential real estate	341,984				18,325				360,309
	Consumer	316,609				9,539				326,148
	Total gross loans and leases receivable held to maturity	$	3,487,189			$	313,235			$	3,800,424
	December 31, 2013
	Commercial	$	871,825			$	78,372			$	950,197
	Commercial real estate	1,390,820				138,863				1,529,683
	Total commercial and commercial real estate	2,262,645				217,235				2,479,880
	Agricultural and agricultural real estate	335,821				40,914				376,735
	Residential real estate	333,161				16,188				349,349
	Consumer	284,148				9,997				294,145
	Total gross loans and leases receivable held to maturity	$	3,215,775			$	284,334			$	3,500,109
Past Due Financing Receivables	'
	The following table sets forth information regarding Heartland's accruing and nonaccrual loans and leases not covered by loss share agreements at September 30, 2014, and December 31, 2013, in thousands:
		Accruing Loans and Leases
		30-59 Days				60-89 Days				90 Days or				Total				Current				Nonaccrual		Total Loans
		Past Due				Past Due				More Past Due				Past Due										and Leases
	September 30, 2014
	Commercial	$	5,163			$	124			$	—			$	5,287			$	1,013,124			$	6,301	$	1,024,712
	Commercial real estate	941				101				—				1,042				1,670,756				13,034		1,684,832
	Total commercial and commercial real estate	6,104				225				—				6,329				2,683,880				19,335		2,709,544
	Agricultural and agricultural real estate	89				—				—				89				402,319				2,015		404,423
	Residential real estate	1,626				120				—				1,746				352,362				6,201		360,309
	Consumer	2,915				990				—				3,905				319,664				2,579		326,148
	Total gross loans and leases receivable held to maturity	$	10,734			$	1,335			$	—			$	12,069			$	3,758,225			$	30,130	$	3,800,424
	December 31, 2013
	Commercial	$	697			$	741			$	—			$	1,438			$	935,508			$	13,251	$	950,197
	Commercial real estate	3,042				199				24				3,265				1,511,618				14,800		1,529,683
	Total commercial and commercial real estate	3,739				940				24				4,703				2,447,126				28,051		2,479,880
	Agricultural and agricultural real estate	818				—				—				818				369,907				6,010		376,735
	Residential real estate	1,199				56				—				1,255				342,735				5,359		349,349
	Consumer	2,624				1,089				—				3,713				287,458				2,974		294,145
	Total gross loans and leases receivable held to maturity	$	8,380			$	2,085			$	24			$	10,489			$	3,447,226			$	42,394	$	3,500,109
Allowance for Credit Losses on Financing Receivables	'
	The following tables present, for impaired loans not covered by loss share agreements and by category of loan, the unpaid contractual balance at September 30, 2014, and December 31, 2013; the outstanding loan balance recorded on the consolidated balance sheets at September 30, 2014, and December 31, 2013; any related allowance recorded for those loans as of September 30, 2014, and December 31, 2013; the average outstanding loan balance recorded on the consolidated balance sheets during the three months and nine months ended September 30, 2014, and year ended December 31, 2013; and the interest income recognized on the impaired loans during the three months and nine months ended September 30, 2014, and year ended December 31, 2013, in thousands:
		Unpaid				Loan				Related				Quarter-to-				Quarter-to-				Year-to-		Year-to-
		Contractual				Balance				Allowance				Date				Date				Date		Date
		Balance								Recorded				Avg.				Interest				Avg.		Interest
														Loan				Income				Loan		Income
														Balance				Recognized				Balance		Recognized
	September 30, 2014
	Impaired loans with a related allowance:
	Commercial	$	4,751			$	4,675			$	451			$	6,960			$	—			$	7,022	$	10
	Commercial real estate	4,092				3,832				1,176				11,645				7				6,294		40
	Total commercial and commercial real estate	8,843				8,507				1,627				18,605				7				13,316		50
	Agricultural and agricultural real estate	3,368				3,368				67				4,021				12				4,176		67
	Residential real estate	2,024				1,939				424				6,308				8				3,604		17
	Consumer	4,339				4,330				1,287				5,489				21				4,710		81
	Total loans held to maturity	$	18,574			$	18,144			$	3,405			$	34,423			$	48			$	25,806	$	215
	Impaired loans without a related allowance:
	Commercial	$	4,222			$	3,603			$	—			$	2,620			$	20			$	3,519	$	60
	Commercial real estate	33,626				29,448				—				23,937				595				23,325		883
	Total commercial and commercial real estate	37,848				33,051				—				26,557				615				26,844		943
	Agricultural and agricultural real estate	3,749				2,321				—				2,100				3				3,731		10
	Residential real estate	6,616				6,248				—				6,449				—				6,055		64
	Consumer	1,820				1,820				—				1,627				17				1,722		34
	Total loans held to maturity	$	50,033			$	43,440			$	—			$	36,733			$	635			$	38,352	$	1,051
	Total impaired loans held to maturity:
	Commercial	$	8,973			$	8,278			$	451			$	9,580			$	20			$	10,541	$	70
	Commercial real estate	37,718				33,280				1,176				35,582				602				29,619		923
	Total commercial and commercial real estate	46,691				41,558				1,627				45,162				622				40,160		993
	Agricultural and agricultural real estate	7,117				5,689				67				6,121				15				7,907		77
	Residential real estate	8,640				8,187				424				12,757				8				9,659		81
	Consumer	6,159				6,150				1,287				7,116				38				6,432		115
	Total impaired loans held to maturity	$	68,607			$	61,584			$	3,405			$	71,156			$	683			$	64,158	$	1,266
		Unpaid				Loan				Related				Year-to-				Year-to-
		Contractual				Balance				Allowance				Date				Date
		Balance								Recorded				Avg.				Interest
														Loan				Income
														Balance				Recognized
	December 31, 2013
	Impaired loans with a related allowance:
	Commercial	$	7,901			$	7,901			$	2,817			$	5,343			$	38
	Commercial real estate	9,164				8,909				818				7,686				282
	Total commercial and commercial real estate	17,065				16,810				3,635				13,029				320
	Agricultural and agricultural real estate	13,818				13,818				756				7,537				354
	Residential real estate	2,460				2,460				605				3,179				13
	Consumer	3,485				3,485				1,721				3,490				100
	Total loans held to maturity	$	36,828			$	36,573			$	6,717			$	27,235			$	787
	Impaired loans without a related allowance:
	Commercial	$	7,724			$	6,743			$	—			$	9,394			$	89
	Commercial real estate	24,830				19,390				—				25,676				538
	Total commercial and commercial real estate	32,554				26,133				—				35,070				627
	Agricultural and agricultural real estate	2,849				2,849				—				9,985				189
	Residential real estate	5,345				4,754				—				4,198				80
	Consumer	1,652				1,652				—				1,515				37
	Total loans held to maturity	$	42,400			$	35,388			$	—			$	50,768			$	933
	Total impaired loans held to maturity:
	Commercial	$	15,625			$	14,644			$	2,817			$	14,737			$	127
	Commercial real estate	33,994				28,299				818				33,362				820
	Total commercial and commercial real estate	49,619				42,943				3,635				48,099				947
	Agricultural and agricultural real estate	16,667				16,667				756				17,522				543
	Residential real estate	7,805				7,214				605				7,377				93
	Consumer	5,137				5,137				1,721				5,005				137
	Total impaired loans held to maturity	$	79,228			$	71,961			$	6,717			$	78,003			$	1,720
Impaired Financing Receivables	'
	The carrying amount of the loans covered by these loss share agreements at September 30, 2014, and December 31, 2013, consisted of purchased impaired and nonimpaired loans as summarized in the following table, in thousands:
		September 30, 2014												December 31, 2013
		Impaired				Non				Total				Impaired				Non				Total
		Purchased				Impaired				Covered				Purchased				Impaired				Covered
		Loans				Purchased				Loans				Loans				Purchased				Loans
						Loans												Loans
	Commercial and commercial real estate	$	—			$	1,188			$	1,188			$	549			$	1,765			$	2,314
	Agricultural and agricultural real estate	—				573				573				—				543				543
	Residential real estate	—				1,762				1,762				—				2,280				2,280
	Consumer loans	266				61				327				538				74				612
	Total Covered Loans	$	266			$	3,584			$	3,850			$	1,087			$	4,662			$	5,749

Allowance_for_Loan_and_Lease_L1

Allowance for Loan and Lease Losses (Tables)	9 Months Ended
	Sep. 30, 2014
Allowance for Loan and Lease Losses [Abstract]	'
Allowance for Credit Losses on Financing Receivables	'
	Changes in the allowance for loan and lease losses for the three and nine months ended September 30, 2014, and September 30, 2013, were as follows, in thousands:
		Commercial			Commercial			Agricultural			Residential			Consumer			Unallocated		Total
					Real Estate						Real Estate
	Balance at June 30, 2014	$	11,927		$	14,680		$	2,788		$	3,815		$	7,516		$	166	$	40,892
	Charge-offs	(875		)	(295		)	(338		)	(21		)	(1,120		)	—		(2,649		)
	Recoveries	145			539			5			29			184			—		902
	Provision	158			1,221			661			(200		)	673			40		2,553
	Balance at September 30, 2014	$	11,355		$	16,145		$	3,116		$	3,623		$	7,253		$	206	$	41,698
		Commercial			Commercial			Agricultural			Residential			Consumer			Unallocated		Total
					Real Estate						Real Estate
	Balance at December 31, 2013	$	13,099		$	14,152		$	2,992		$	3,720		$	7,722		$	—	$	41,685
	Charge-offs	(7,940		)	(1,379		)	(1,974		)	(225		)	(3,189		)	—		(14,707		)
	Recoveries	552			1,833			9			85			606			—		3,085
	Provision	5,644			1,539			2,089			43			2,114			206		11,635
	Balance at September 30, 2014	$	11,355		$	16,145		$	3,116		$	3,623		$	7,253		$	206	$	41,698
		Commercial			Commercial			Agricultural			Residential			Consumer			Unallocated		Total
					Real Estate						Real Estate
	Balance at June 30, 2013	$	9,436		$	13,671		$	3,055		$	3,580		$	7,881		$	—	$	37,623
	Charge-offs	(163		)	(630		)	—			(450		)	(1,270		)	—		(2,513		)
	Recoveries	78			514			1			76			383			—		1,052
	Provision	3,745			488			(240		)	331			825			—		5,149
	Balance at September 30, 2013	$	13,096		$	14,043		$	2,816		$	3,537		$	7,819		$	—	$	41,311
		Commercial			Commercial			Agricultural			Residential			Consumer			Unallocated		Total
					Real Estate						Real Estate
	Balance at December 31, 2012	$	11,388		$	14,473		$	2,138		$	3,543		$	7,173		$	—	$	38,715
	Charge-offs	(1,422		)	(2,561		)	(23		)	(856		)	(3,488		)	—		(8,350		)
	Recoveries	983			1,279			100			102			834			—		3,298
	Provision	2,147			852			601			748			3,300			—		7,648
	Balance at September 30, 2013	$	13,096		$	14,043		$	2,816		$	3,537		$	7,819		$	—	$	41,311

Goodwill_Core_Deposit_Premium_1

Goodwill, Core Deposit Premium and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Schedule of Acquired Finite-Lived Intangible Assets by Major Class	'
	The gross carrying amount of other intangible assets and the associated accumulated amortization at September 30, 2014, and December 31, 2013, are presented in the table below, in thousands:
		September 30, 2014								December 31, 2013
		Gross			Accumulated			Net		Gross		Accumulated		Net
		Carrying			Amortization			Carrying		Carrying		Amortization		Carrying
		Amount						Amount		Amount				Amount
	Amortizing intangible assets:
	Core deposit intangibles	$	21,069		$	12,049		$	9,020	$	21,069	$	10,345	$	10,724
	Mortgage servicing rights	36,193			12,228			23,965		32,160		10,372		21,788
	Customer relationship intangible	1,177			763			414		1,177		730		447
	Total	$	58,439		$	25,040		$	33,399	$	54,406	$	21,447	$	32,959
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	'
	The following table shows the estimated future amortization expense for amortizable intangible assets, in thousands:
		Core			Mortgage			Customer
		Deposit			Servicing			Relationship
		Intangibles			Rights			Intangible		Total
	Three months ending December 31, 2014	$	476		$	1,424		$	11	$	1,911
	Year ending December 31,
	2015	1,780			5,635			42		7,457
	2016	1,575			4,830			41		6,446
	2017	1,393			4,025			40		5,458
	2018	1,232			3,220			39		4,491
	2019	1,056			2,415			38		3,509
	Thereafter	1,508			2,416			203		4,127
Schedule of Servicing Assets at Fair Value	'
	The following table summarizes, in thousands, the changes in capitalized mortgage servicing rights for the nine months ended September 30, 2014 and 2013:
		2014			2013
	Balance at January 1	$	21,788		$	15,653
	Originations	5,955			10,595
	Amortization	(3,778		)	(5,548		)
	Valuation adjustment	—			496
	Balance at September 30	$	23,965		$	21,196
	Fair value of mortgage servicing rights	$	33,260		$	31,179
	Mortgage servicing rights, net to servicing portfolio	0.71		%	0.73		%

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	'
	The table below identifies the balance sheet category and fair values of Heartland's derivative instruments designated as cash flow hedges at September 30, 2014, and December 31, 2013, in thousands:
		Notional				Fair				Balance	Receive			Weighted		Maturity
		Amount				Value				Sheet	Rate			Average
										Category				Pay Rate
	September 30, 2014
	Interest rate swap	$	10,713			$	(295	)		Other Liabilities	2.904	%		5.14	%	4/20/16
	Interest rate swap	25,000				(117		)		Other Liabilities	0.235	%		2.255	%	3/17/21
	Interest rate swap	20,000				(1,120		)		Other Liabilities	0.234	%		3.22	%	3/1/17
	Interest rate swap	20,000				(1,579		)		Other Liabilities	0.232	%		3.355	%	1/7/20
	Interest rate swap	10,000				48				Other Assets	0.235	%		1.674	%	3/26/19
	Interest rate swap	10,000				48				Other Assets	0.235	%		1.658	%	3/18/19
	December 31, 2013
	Interest rate swap	$	11,719			$	(457	)		Other Liabilities	2.917	%		5.14	%	4/20/16
	Interest rate swap	25,000				(146		)		Other Liabilities	0.244	%		2.58	%	3/17/14
	Interest rate swap	20,000				(1,507		)		Other Liabilities	0.239	%		3.22	%	3/1/17
	Interest rate swap	20,000				(1,587		)		Other Liabilities	0.243	%		3.355	%	1/7/20
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance	'
	The table below identifies the gains and losses recognized on Heartland's derivative instruments designated as cash flow hedges for the three and nine months ended September 30, 2014, and September 30, 2013, in thousands:
		Effective Portion									Ineffective Portion
		Recognized in OCI				Reclassified from AOCI into Income					Recognized in Income on Derivatives
		Amount of Gain (Loss)				Category		Amount of Gain (Loss)			Category		Amount of Gain (Loss)
	Three Months Ended September 30, 2014
	Interest rate swap	$	68			Interest Expense		$	(63	)	Other Income		$	—
	Interest rate swap	193				Interest Expense		(129		)	Other Income		—
	Interest rate swap	208				Interest Expense		(153		)	Other Income		—
	Interest rate swap	248				Interest Expense		(158		)	Other Income		—
	Interest rate swap	89				Interest Expense		(37		)	Other Income		—
	Interest rate swap	88				Interest Expense		(37		)	Other Income		—
	Interest rate swap	—				Interest Expense		—			Other Income		—
	Nine Months Ended September 30, 2014
	Interest rate swap	$	162			Interest Expense		$	(192	)	Other Income		$	—
	Interest rate swap	(117		)		Interest Expense		(258		)	Other Income		—
	Interest rate swap	387				Interest Expense		(455		)	Other Income		—
	Interest rate swap	8				Interest Expense		(473		)	Other Income		—
	Interest rate swap	48				Interest Expense		(74		)	Other Income		—
	Interest rate swap	48				Interest Expense		(73		)	Other Income		—
	Interest rate swap	146				Interest Expense		(146		)	Other Income		—
	Three Months Ended September 30, 2013
	Interest rate swap	$	27			Interest Expense		$	(69	)	Other Income		$	—
	Interest rate swap	138				Interest Expense		(147		)	Other Income		—
	Interest rate swap	7				Interest Expense		(151		)	Other Income		—
	Interest rate swap	(15		)		Interest Expense		(156		)	Other Income		—
	Nine Months Ended September 30, 2013
	Interest rate swap	$	203			Interest Expense		$	(210	)	Other Income		$	—
	Interest rate swap	419				Interest Expense		(436		)	Other Income		—
	Interest rate swap	548				Interest Expense		(446		)	Other Income		—
	Interest rate swap	1,115				Interest Expense		(460		)	Other Income		—
Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location	'
	The table below identifies the balance sheet category and fair values of Heartland's derivative instruments not designated as hedging instruments at September 30, 2014, and December 31, 2013, in thousands:
		Balance Sheet		Notional				Fair
		Category		Amount				Value
	September 30, 2014
	Interest rate lock commitments (mortgage)	Other Assets		$	103,933			$	3,291
	Forward commitments	Other Assets		114,988				222
	Forward commitments	Other Liabilities		179,044				(623		)
	December 31, 2013
	Interest rate lock commitments (mortgage)	Other Assets		$	63,370			$	1,809
	Forward commitments	Other Assets		117,637				1,206
	Forward commitments	Other Liabilities		53,277				(133		)
	The table below identifies the income statement category of the gains and losses recognized in income on Heartland's derivative instruments not designated as hedging instruments for the three and nine months ended September 30, 2014, and September 30, 2013, in thousands:
		Income Statement		Year-to-Date
		Category		Gain (Loss) Recognized
	Three Months Ended September 30, 2014
	Interest rate lock commitments (mortgage)	Gains on sale of loans held for sale		$	(1,924	)
	Forward commitments	Gains on sale of loans held for sale		1,505
	Nine Months Ended September 30, 2014
	Interest rate lock commitments (mortgage)	Gains on sale of loans held for sale		$	3,393
	Forward commitments	Gains on sale of loans held for sale		(1,474		)
	Three Months Ended September 30, 2013
	Interest rate lock commitments (mortgage)	Gains on sale of loans held for sale		$	5,219
	Forward commitments	Gains on sale of loans held for sale		(11,430		)
	Nine Months Ended September 30, 2013
	Interest rate lock commitments (mortgage)	Gains on sale of loans held for sale		$	(6,047	)
	Forward commitments	Gains on sale of loans held for sale		(1,289		)

Fair_Value_Tables

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	'
	The table below presents Heartland's assets and liabilities that are measured at fair value on a recurring basis as of September 30, 2014, and December 31, 2013, in thousands, aggregated by the level in the fair value hierarchy within which those measurements fall:
		Total Fair Value			Level 1			Level 2		Level 3
	September 30, 2014
	Assets
	Trading securities	$	—		$	—		$	—	$	—
	Securities available for sale
	U.S. government corporations and agencies	13,946			2,536			11,410		—
	Mortgage-backed securities	1,164,877			—			1,160,029		4,848
	Obligations of states and political subdivisions	185,811			—			185,811		—
	Equity securities	5,069			—			5,069		—
	Derivative financial instruments	96			—			96		—
	Interest rate lock commitments	3,291			—			—		3,291
	Forward commitments	222			—			222		—
	Total assets at fair value	$	1,373,312		$	2,536		$	1,362,637	$	8,139
	Liabilities
	Derivative financial instruments	$	3,111		$	—		$	3,111	$	—
	Forward commitments	623			—			623		—
	Total liabilities at fair value	$	3,734		$	—		$	3,734	$	—
	December 31, 2013
	Assets
	Trading securities	$	1,801		$	1,801		$	—	$	—
	Securities available for sale
	U.S. government corporations and agencies	218,303			4,084			214,219		—
	Mortgage-backed securities	1,143,947			—			1,140,649		3,298
	Obligations of states and political subdivisions	266,624			—			266,624		—
	Equity securities	5,028			—			5,028		—
	Interest rate lock commitments	1,809			—			—		1,809
	Forward commitments	1,206			—			1,206		—
	Total assets at fair value	$	1,638,718		$	5,885		$	1,627,726	$	5,107
	Liabilities
	Derivative financial instruments	$	3,697		$	—		$	3,697	$	—
	Forward commitments	133			—			133		—
	Total liabilities at fair value	$	3,830		$	—		$	3,830	$	—
Fair Value Measurements, Nonrecurring	'
	The tables below present Heartland's assets that are measured at fair value on a nonrecurring basis, in thousands:
		Fair Value Measurements at September 30, 2014
		Total			Quoted Prices in			Significant Other		Significant		Year-to-
					Active Markets for			Observable		Unobservable		Date
					Identical Assets			Inputs		Inputs		Losses
					(Level 1)			(Level 2)		(Level 3)
	Collateral dependent impaired loans:
	Commercial	$	1,545		$	—		$	—	$	1,545	$	112
	Commercial real estate	7,058			—			—		7,058		470
	Agricultural and agricultural real estate	827			—			—		827		1,428
	Residential real estate	2,503			—			—		2,503		—
	Consumer	3,043			—			—		3,043		9
	Total collateral dependent impaired loans	$	14,976		$	—		$	—	$	14,976	$	2,019
	Other real estate owned	$	20,475		$	—		$	—	$	20,475	$	1,365
		Fair Value Measurements at December 31, 2013
		Total			Quoted Prices in			Significant Other		Significant		Year-to-
					Active Markets for			Observable		Unobservable		Date
					Identical Assets			Inputs		Inputs		Losses
					(Level 1)			(Level 2)		(Level 3)
	Collateral dependent impaired loans:
	Commercial	$	7,229		$	—		$	—	$	7,229	$	919
	Commercial real estate	7,749			—			—		7,749		1,881
	Agricultural and agricultural real estate	13,062			—			—		13,062		—
	Residential real estate	3,396			—			—		3,396		—
	Consumer	1,763			—			—		1,763		—
	Total collateral dependent impaired loans	$	33,199		$	—		$	—	$	33,199	$	2,800
	Other real estate owned	$	29,852		$	—		$	—	$	29,852	$	2,799
Fair Value Inputs, Liabilities, Quantitative Information	'
	The following tables present additional quantitative information about assets measured at fair value and for which Heartland has utilized Level 3 inputs to determine fair value, in thousands:
		Quantitative Information About Level 3 Fair Value Measurements
		Fair Value			Valuation		Unobservable	Range
		at 9/30/14			Technique		Input	(Weighted Average)
	Z-TRANCHE Securities	$	4,848		Discounted cash flows		Pretax discount rate	6.50 - 8.00%
							Actual defaults	12.71-20.14% (15.52%)
							Actual deferrals	6.25-22.35% (11.32%)
	Interest rate lock commitments	3,291			Discounted cash flows		Closing ratio	(1)
	Collateral dependent impaired loans:
	Commercial	1,545			Modified appraised value		Third party appraisal	(2)
							Appraisal discount	(2)
	Commercial real estate	7,058			Modified appraised value		Third party appraisal	(2)
							Appraisal discount	(2)
	Agricultural and agricultural real estate	827			Modified appraised value		Third party appraisal	(2)
							Appraisal discount	(2)
	Residential real estate	2,503			Modified appraised value		Third party appraisal	(2)
							Appraisal discount	(2)
	Consumer	3,043			Modified appraised value		Third party appraisal	(2)
							Appraisal discount	(2)
	Other real estate owned	20,475			Modified appraised value		Third party appraisal	(2)
							Appraisal discount
	(1) The significant unobservable input used in the fair value measurement is the closing ratio, which represents the percentage of loans currently in a lock position which management estimates will ultimately close. The closing ratio calculation takes into consideration historical data and loan-level data; therefore providing a range would not be meaningful. The weighted average closing ratio at September 30, 2014 was 84%.
	(2) Third party appraisals are obtained as to the value of the underlying asset, but disclosure of this information would not provide meaningful information, as the range will vary widely from loan to loan. Types of discounts considered included age of the appraisal, local market conditions, current condition of the property, and estimated sales costs. These discounts will also vary from loan to loan, thus providing range would not be meaningful.
		Quantitative Information About Level 3 Fair Value Measurements
		Fair Value			Valuation		Unobservable	Range
		at 12/31/13			Technique		Input	(Weighted Average)
	Z-TRANCHE Securities	$	3,298		Discounted cash flows		Pretax discount rate	7.00 - 9.00%
							Actual defaults	12.50-28.20% (20.80%)
							Actual deferrals	6.10-16.00% (11.10%)
	Interest rate lock commitments	1,809			Discounted cash flows		Closing ratio	(1)
	Collateral dependent impaired loans:
	Commercial	7,229			Modified appraised value		Third party appraisal	(2)
							Appraisal discount	(2)
	Commercial real estate	7,749			Modified appraised value		Third party appraisal	(2)
							Appraisal discount	(2)
	Agricultural and agricultural real estate	13,062			Modified appraised value		Third party appraisal	(2)
							Appraisal discount	(2)
	Residential real estate	3,396			Modified appraised value		Third party appraisal	(2)
							Appraisal discount	(2)
	Consumer	1,763			Modified appraised value		Third party appraisal	(2)
							Appraisal discount	(2)
	Other real estate owned	29,852			Modified appraised value		Third party appraisal	(2)
							Appraisal discount
	(1) The significant unobservable input used in the fair value measurement is the closing ratio, which represents the percentage of loans currently in a lock position which management estimates will ultimately close. The closing ratio calculation takes into consideration historical data and loan-level data; therefore providing a range would not be meaningful. The weighted average closing ratio at December 31, 2013 was 87%.
	(2) Third party appraisals are obtained as to the value of the underlying asset, but disclosure of this information would not provide meaningful information, as the range will vary widely from loan to loan. Types of discounts considered included age of the appraisal, local market conditions, current condition of the property, and estimated sales costs. These discounts will also vary from loan to loan, thus providing range would not be meaningful.
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation	'
	The changes in fair value of the Z-TRANCHE, a Level 3 asset, that is measured on a recurring basis is summarized in the following table, in thousands:
		For the Nine Months Ended			For the Year Ended
		30-Sep-14			31-Dec-13
	Balance at January 1,	$	3,298		$	4,089
	Total gains (losses):
	Included in earnings	—			(1,587		)
	Included in other comprehensive income	1,669			826
	Purchases, issuances, sales and settlements:
	Purchases	—			—
	Sales	(119		)	(30		)
	Settlements	—			—
	Balance at period end	$	4,848		$	3,298
	The changes in fair value of the interest rate lock commitments, which are Level 3 financial instruments and are measured on a recurring basis, are summarized in the following table, in thousands:
		For the Nine Months Ended			For the Year Ended
		30-Sep-14			31-Dec-13
	Balance at January 1,	$	1,809		$	9,353
	Total gains (losses) included in earnings	3,393			(10,518		)
	Issuances	1,798			9,821
	Settlements	(3,709		)	(6,847		)
	Balance at period end	$	3,291		$	1,809
Fair Value, by Balance Sheet Grouping	'
	The following analysis, which is inherently limited in depicting fair value, also does not consider any value associated with either existing customer relationships or the ability of Heartland to create value through loan origination, deposit gathering or fee generating activities. Many of the estimates presented herein are based upon the use of highly subjective information and assumptions and, accordingly, the results may not be precise. Management believes that fair value estimates may not be comparable between financial institutions due to the wide range of permitted valuation techniques and numerous estimates which must be made. Furthermore, because the disclosed fair value amounts were estimated as of the balance sheet date, the amounts actually realized or paid upon maturity or settlement of the various financial instruments could be significantly different.
								Fair Value Measurements at
								30-Sep-14
		Carrying			Estimated			Quoted Prices in		Significant Other		Significant
		Amount			Fair			Active Markets for		Observable		Unobservable
					Value			Identical Assets		Inputs		Inputs
								(Level 1)		(Level 2)		(Level 3)
	Financial assets:
	Cash and cash equivalents	$	67,836		$	67,836		$	67,836	$	—	$	—
	Time deposits in other financial institutions	2,605			2,605			2,605		—		—
	Securities:
	Trading	—			—			—		—		—
	Available for sale	1,369,703			1,369,703			2,536		1,362,319		4,848
	Held to maturity	255,312			266,641			—		266,641		—
	Other investments	20,514			20,514			—		20,279		235
	Loans held for sale	93,054			93,054			—		93,054		—
	Loans, net:
	Commercial	1,012,918			1,004,481			—		1,002,936		1,545
	Commercial real estate	1,668,969			1,682,042			—		1,674,984		7,058
	Agricultural and agricultural real estate	401,785			388,171			—		387,344		827
	Residential real estate	357,658			329,916			—		327,413		2,503
	Consumer	319,126			312,399			—		309,356		3,043
	Total Loans, net	3,760,456			3,717,009			—		3,702,033		14,976
	Derivative financial instruments	96			96			—		96		—
	Interest rate lock commitments	3,291			3,291			—		—		3,291
	Forward commitments	222			222			—		222		—
	Financial liabilities:
	Deposits
	Demand deposits	1,274,439			1,274,439			—		1,274,439		—
	Savings deposits	2,599,850			2,599,850			—		2,599,850		—
	Time deposits	852,430			852,430			—		852,430		—
	Short term borrowings	348,305			348,305			—		348,305		—
	Other borrowings	334,513			339,338			—		339,338		—
	Derivative financial instruments	3,111			3,111			—		3,111		—
	Forward commitments	623			623			—		623		—
								Fair Value Measurements at
								31-Dec-13
		Carrying			Estimated			Quoted Prices in		Significant Other		Significant
		Amount			Fair			Active Markets for		Observable		Unobservable
					Value			Identical Assets		Inputs		Inputs
								(Level 1)		(Level 2)		(Level 3)
	Financial assets:
	Cash and cash equivalents	$	125,270		$	125,270		$	125,270	$	—	$	—
	Securities:
	Trading	1,801			1,801			1,801		—		—
	Available for sale	1,633,902			1,633,902			4,084		1,626,520		3,298
	Held to maturity	237,498			237,437			—		237,437		—
	Other investments	21,843			21,843			—		21,608		235
	Loans held for sale	46,665			46,665			—		46,665		—
	Loans, net:
	Commercial	936,305			930,501			—		923,272		7,229
	Commercial real estate	1,516,352			1,512,773			—		1,505,024		7,749
	Agricultural and agricultural real estate	374,203			378,086			—		365,024		13,062
	Residential real estate	347,266			335,362			—		331,966		3,396
	Consumer	286,890			273,139			—		271,376		1,763
	Total Loans, net	3,461,016			3,429,861			—		3,396,662		33,199
	Derivative financial instruments	—			—			—		—		—
	Interest rate lock commitments	1,809			1,809			—		—		1,809
	Forward commitments	1,206			1,206			—		1,206		—
	Financial liabilities:
	Deposits
	Demand deposits	1,238,581			1,238,581			—		1,238,581		—
	Savings deposits	2,535,242			2,535,242			—		2,535,242		—
Time deposits	892,676			892,676			—		892,676		—
Short term borrowings	408,756			408,756			—		408,756		—
Other borrowings	350,109			355,923			—		355,923		—
Derivative financial instruments	3,697			3,697			—		3,697		—
Forward commitments	133			133			—		133		—

Segment_Reporting_Tables

Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Schedule of Segment Reporting	'
	The following tables present financial information from Heartland's operating segments for the three and nine month periods ended September 30, 2014, and 2013, in thousands.
		Three Months Ended
		September 30,
		2014							2013
		Community		Retail			Total		Community		Retail			Total
		and Other		Mortgage					and Other		Mortgage
		Banking		Banking					Banking		Banking
	Net interest income	$	50,790	$	701		$	51,491	$	39,292	$	588		$	39,880
	Provision for loan losses	2,553		—			2,553		5,149		—			5,149
	Total noninterest income	11,124		9,038			20,162		11,971		8,408			20,379
	Total noninterest expense	42,784		11,427			54,211		35,511		11,297			46,808
	Income (loss) before taxes	$	16,577	$	(1,688	)	$	14,889	$	10,603	$	(2,301	)	$	8,302
	Average Loans, for the period	$	3,736,917	$	75,301		$	3,812,218	$	2,867,933	$	69,575		$	2,937,508
	Segment Assets, at period end	$	5,817,427	$	117,382		$	5,934,809	$	4,825,781	$	86,949		$	4,912,730
		Nine Months Ended
		September 30,
		2014							2013
		Community		Retail			Total		Community		Retail			Total
		and Other		Mortgage					and Other		Mortgage
		Banking		Banking					Banking		Banking
	Net interest income	$	148,930	$	1,972		$	150,902	$	115,968	$	1,503		$	117,471
	Provision for loan losses	11,635		—			11,635		7,648		—			7,648
	Total noninterest income	33,720		25,906			59,626		35,190		34,414			69,604
	Total noninterest expense	127,743		32,744			160,487		104,199		36,021			140,220
	Income (loss) before taxes	$	43,272	$	(4,866	)	$	38,406	$	39,311	$	(104	)	$	39,207
	Average Loans, for the period	$	3,629,822	$	62,896		$	3,692,718	$	2,820,418	$	86,552		$	2,906,970
	Segment Assets, at period end	$	5,817,427	$	117,382		$	5,934,809	$	4,825,781	$	86,949		$	4,912,730

Basis_of_Presentation_Earnings

Basis of Presentation (Earnings per Share) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share	'	'	'	'
Net income attributable to Heartland	$11,973	$6,810	$29,637	$28,854
Preferred dividends and discount	-205	-276	-613	-889
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$11,768	$6,534	$29,024	$27,965
Weighted average common shares outstanding for basic earnings per share	18,469	16,936	18,456	16,904
Assumed incremental common shares issued for common stock equivalents	284	285	287	279
Weighted average common shares for diluted earnings per share	18,753	17,221	18,743	17,183
Earnings per common share b basic (in dollars per share)	$0.64	$0.39	$1.57	$1.65
Earnings per common share b diluted (in dollars per share)	$0.63	$0.38	$1.55	$1.63
Number of antidilutive common stock equivalents excluded from diluted earnings per share computation	94	105	94	105

Basis_of_Presentation_StockBas

Basis of Presentation (Stock-Based Compensation) (Details) (USD $)	0 Months Ended		9 Months Ended
	Mar. 11, 2014	Jan. 22, 2013	Sep. 30, 2014	Sep. 30, 2013
			equal_installments
Stock-Based Compensation	'	'	'	'
Tax benefit (expense) from equity based awards	'	'	119,000	68,000
Options granted (in shares)	'	'	0	0
Vested options (in shares)	'	'	245,186	307,521
Vested options, weighted average exercise price (in dollars per share)	'	'	23.67	23.28
Vested options, weighted average remaining contractual life	'	'	'2 years 3 months 1 day	'
Intrinsic value for vested options	'	'	594,000	'
Intrinsic value for the total of all options exercised	'	'	41,000	'
Maximum exercise period	'	'	'10 years	'
Cash received from options exercised	'	'	192,000	1,300,000
Long-Term Incentive Plan 2012	'	'	'	'
Stock-Based Compensation	'	'	'	'
Number of shares for issuance under future awards	'	'	368,026	'
Restricted Stock Units (RSUs)	'	'	'	'
Stock-Based Compensation	'	'	'	'
Share-based compensation costs	'	'	2,700,000	1,500,000
Share-based unrecognized compensation costs	'	'	3,600,000	'
Restricted Stock Units (RSUs) | Long-Term Incentive Plan 2005	'	'	'	'
Stock-Based Compensation	'	'	'	'
Equity instruments other than options, granted (in shares)	67,190	72,595	33,304	13,100
Share-based compensation, award vesting periods	'	'	'5 years	'
Award vesting, number of equal installments	'	'	3	'
Performance-Based Restricted Stock Units | Long-Term Incentive Plan 2005	'	'	'	'
Stock-Based Compensation	'	'	'	'
Equity instruments other than options, granted (in shares)	32,645	40,990	'	'
Stock Option	'	'	'	'
Stock-Based Compensation	'	'	'	'
Share-based compensation costs	'	'	0	10,000
Options granted (in shares)	'	'	0	0
Stock Option | Prior to 2009	'	'	'	'
Stock-Based Compensation	'	'	'	'
Share-based compensation, award vesting periods	'	'	'5 years	'
Typical options expiration period after date of grant	'	'	'10 years	'
Stock Option | Prior to 2009 | Period One	'	'	'	'
Stock-Based Compensation	'	'	'	'
Share-based compensation, award vesting periods	'	'	'3 years	'
Stock Option | Prior to 2009 | Period Two	'	'	'	'
Stock-Based Compensation	'	'	'	'
Share-based compensation, award vesting periods	'	'	'4 years	'
Stock Option | Prior to 2009 | Period Three	'	'	'	'
Stock-Based Compensation	'	'	'	'
Share-based compensation, award vesting periods	'	'	'5 years	'

Basis_of_Presentation_Summary_

Basis of Presentation (Summary of RSUs Activity) (Details) (Restricted Stock Units (RSUs), USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Restricted Stock Units (RSUs)	'	'
Shares	'	'
Outstanding at beginning of period (in shares)	353,070	348,897
Granted (in shares)	133,139	126,685
Vested (in shares)	-74,521	-43,388
Forfeited (in shares)	-7,483	-57,982
Outstanding at end of period (in shares)	404,205	374,212
Weighted-Average Grant Date Fair Value	'	'
Outstanding at beginning of period (in dollars per share)	$18.62	$15.75
Granted (in dollars per share)	$26.65	$26.92
Vested (in dollars per share)	$16.95	$17
Forfeited (in dollars per share)	$20.22	$19.08
Outstanding at end of period (in dollars per share)	$21.44	$19.02

Basis_of_Presentation_Summary_1

Basis of Presentation (Summary of Stock Options Activity) (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Shares	'	'
Outstanding at beginning of period (in shares)	261,936	377,907
Granted (in shares)	0	0
Exercised (in shares)	-9,750	-68,586
Forfeited (in shares)	-7,000	-1,800
Outstanding at end of period (in shares)	245,186	307,521
Options exercisable at end of period (in shares)	245,186	307,521
Weighted-Average Exercise Price	'	'
Outstanding at beginning of period (in dollars per share)	$23.60	$22.62
Granted (in dollars per share)	$0	$0
Exercised (in dollars per share)	$19.67	$19.54
Forfeited (in dollars per share)	$26.62	$26.68
Outstanding at end of period (in dollars per share)	$23.67	$23.28
Options exercisable at end of period (in dollars per share)	$23.67	$23.28

Basis_of_Presentation_Subseque

Basis of Presentation (Subsequent Events) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Oct. 22, 2014	Sep. 30, 2014	Sep. 30, 2014	Nov. 07, 2014	Nov. 07, 2014
				Community Bank-Corp of Sheboygan, Inc.	Community Bank & Trust	Morrill and Janes Bank and Trust Company	Morrill and Janes Bank and Trust Company	Morrill and Janes Bank and Trust Company
				Subsequent Event			Subsequent Event	Subsequent Event
								branch
Subsequent Event [Line Items]	'	'	'	'	'	'	'	'
Assets	$5,934,809,000	$5,923,716,000	$4,912,730,000	'	$525,000,000	'	'	'
Loans	'	'	'	'	410,000,000	9,000,000	'	'
Percentage of adjusted tangible book value	'	'	'	155.00%	'	'	'	'
Purchase price	'	'	'	52,000,000	'	'	'	'
Number of branches to be sold	'	'	'	'	'	'	'	1
Deposits	$4,726,719,000	$4,666,499,000	'	'	'	$28,000,000	'	'
Anticipated premium as percentage of average deposits	'	'	'	'	'	'	2.00%	'

Basis_of_Presentation_Reclassi

Basis of Presentation (Reclassifications) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'	'	'	'
Loan servicing income, reclassified to gain on sale of loans held-for-sale	'	$3,400,000	'	$10,600,000
Other real estate and loan collection expenses, reclassified to other noninterest income	'	339,000	'	2,400,000
Other real estate and loan collection expenses	$730,000	$1,100,000	$2,400,000	$4,900,000

Securities_Securities_availabl

Securities (Securities available for sale) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	$1,366,069	$1,659,456
Gross Unrealized Gains	16,205	11,423
Gross Unrealized Losses	-12,571	-36,977
Estimated Fair Value	1,369,703	1,633,902
Debt Securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	1,361,048	1,654,460
Gross Unrealized Gains	16,157	11,391
Gross Unrealized Losses	-12,571	-36,977
Estimated Fair Value	1,364,634	1,628,874
U.S. government corporations and agencies	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	13,884	220,157
Gross Unrealized Gains	74	147
Gross Unrealized Losses	-12	-2,001
Estimated Fair Value	13,946	218,303
Mortgage-backed securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	1,166,166	1,156,983
Gross Unrealized Gains	10,403	9,538
Gross Unrealized Losses	-11,692	-22,574
Estimated Fair Value	1,164,877	1,143,947
Obligations of states and political subdivisions	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	180,998	277,320
Gross Unrealized Gains	5,680	1,706
Gross Unrealized Losses	-867	-12,402
Estimated Fair Value	185,811	266,624
Equity securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	5,021	4,996
Gross Unrealized Gains	48	32
Gross Unrealized Losses	0	0
Estimated Fair Value	$5,069	$5,028

Securities_Held_to_maturity_se

Securities (Held to maturity securities) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Held-to-maturity Securities [Line Items]	'	'
Amortized Cost	$255,312	$237,498
Gross Unrealized Gains	13,177	6,000
Gross Unrealized Losses	-1,848	-6,061
Estimated Fair Value	266,641	237,437
Mortgage-backed securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Amortized Cost	5,805	5,973
Gross Unrealized Gains	263	199
Gross Unrealized Losses	-533	-321
Estimated Fair Value	5,535	5,851
Obligations of states and political subdivisions	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Amortized Cost	249,507	231,525
Gross Unrealized Gains	12,914	5,801
Gross Unrealized Losses	-1,315	-5,740
Estimated Fair Value	$261,106	$231,586

Securities_Securities_availabl1

Securities (Securities available for sale (debt maturities) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Amortized Cost	'	'
Due in 1 year or less	$8,440	'
Due in 1 to 5 years	19,027	'
Due in 5 to 10 years	83,717	'
Due after 10 years	83,698	'
Total debt securities	194,882	'
Mortgage-backed securities	1,166,166	'
Equity securities	5,021	'
Amortized Cost	1,366,069	1,659,456
Estimated Fair Value	'	'
Due in 1 year or less	8,525	'
Due in 1 to 5 years	19,184	'
Due in 5 to 10 years	86,936	'
Due after 10 years	85,112	'
Total debt securities	199,757	'
Mortgage-backed securities	1,164,877	'
Equity securities	5,069	'
Estimated Fair Value	$1,369,703	$1,633,902

Securities_Securities_held_to_

Securities (Securities held to maturity (debt maturities) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Amortized Cost	'	'
Due in 1 year or less	$0	'
Due in 1 to 5 years	13,062	'
Due in 5 to 10 years	47,769	'
Due after 10 years	188,676	'
Total debt securities	249,507	'
Mortgage-backed securities	5,805	'
Amortized Cost	255,312	237,498
Estimated Fair Value	'	'
Due in 1 year or less	0	'
Due in 1 to 5 years	13,910	'
Due in 5 to 10 years	50,227	'
Due after 10 years	196,969	'
Total debt securities	261,106	'
Mortgage-backed securities	5,535	'
Estimated Fair Value	$266,641	$237,437

Securities_Realized_gain_loss_

Securities (Realized gain (loss)) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract]	'	'	'	'
Proceeds from sales	$189,939	$127,475	$699,830	$343,410
Gross security gains	1,101	1,420	4,547	7,703
Gross security losses	$276	$302	$2,087	$1,091

Securities_Available_for_sale_

Securities (Available for sale securities losses) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	$515,804	$1,034,016
Less than 12 months, Unrealized Losses	-5,633	-30,517
12 months or longer, Fair Value	339,577	128,943
12 months or longer, Unrealized Losses	-6,938	-6,460
Total, Fair Value	855,381	1,162,959
Total, Unrealized Losses	-12,571	-36,977
U.S. government corporations and agencies	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	0	196,345
Less than 12 months, Unrealized Losses	0	-2,001
12 months or longer, Fair Value	978	0
12 months or longer, Unrealized Losses	-12	0
Total, Fair Value	978	196,345
Total, Unrealized Losses	-12	-2,001
Mortgage-backed securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	514,918	640,684
Less than 12 months, Unrealized Losses	-5,627	-17,064
12 months or longer, Fair Value	296,255	118,229
12 months or longer, Unrealized Losses	-6,065	-5,510
Total, Fair Value	811,173	758,913
Total, Unrealized Losses	-11,692	-22,574
Obligations of states and political subdivisions	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	886	196,987
Less than 12 months, Unrealized Losses	-6	-11,452
12 months or longer, Fair Value	42,344	10,714
12 months or longer, Unrealized Losses	-861	-950
Total, Fair Value	43,230	207,701
Total, Unrealized Losses	($867)	($12,402)

Securities_Held_to_maturity_se1

Securities (Held to maturity securities losses) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Held-to-maturity Securities [Line Items]	'	'
Less than 12 months, Fair Value	$1,577	$49,345
Less than 12 months, Unrealized Losses	-390	-3,827
12 months or longer, Fair Value	39,273	22,339
12 months or longer, Unrealized Losses	-1,458	-2,234
Total, Fair Value	40,850	71,684
Total, Unrealized Losses	-1,848	-6,061
Mortgage-backed securities	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Less than 12 months, Fair Value	0	2,170
Less than 12 months, Unrealized Losses	0	-319
12 months or longer, Fair Value	2,861	834
12 months or longer, Unrealized Losses	-533	-2
Total, Fair Value	2,861	3,004
Total, Unrealized Losses	-533	-321
Obligations of states and political subdivisions	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Less than 12 months, Fair Value	1,577	47,175
Less than 12 months, Unrealized Losses	-390	-3,508
12 months or longer, Fair Value	36,412	21,505
12 months or longer, Unrealized Losses	-925	-2,232
Total, Fair Value	37,989	68,680
Total, Unrealized Losses	($1,315)	($5,740)

Securities_Otherthantemporary_

Securities (Other-than-temporary impairments) (Details) (USD $)	1 Months Ended	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2012	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014	Dec. 31, 2013
	securities					Available-for-sale Securities	Available-for-sale Securities	Held-to-maturity Securities	Held-to-maturity Securities
Investments, Debt and Equity Securities [Abstract]	'	'	'	'	'	'	'	'	'
Recorded as part of gross realized losses: Credit related OTTI	'	$0	$0	$0	$0	'	'	'	'
Recorded as part of gross realized losses: Intent to sell OTTI	'	0	0	0	0	'	'	'	'
Total recorded as part of gross realized losses	981	0	0	0	0	'	'	'	'
Recorded directly to AOCI for non-credit related impairment: Residential mortgage backed securities	'	0	0	0	0	'	'	'	'
Recorded directly to AOCI for non-credit related impairment: Accretion of non-credit related impairment	'	-24	-24	-72	-72	'	'	'	'
Total changes to AOCI for non-credit related impairment	'	-24	-24	-72	-72	'	'	'	'
Total OTTI losses (accretion) recorded on debt securities, net	'	-24	-24	-72	-72	'	'	'	'
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]	'	'	'	'	'	'	'	'	'
Credit related to OTTI	'	'	'	'	'	184	184	797	797
Non-credit related to OTTI	'	'	'	'	'	'	'	445	517
Number of private label mortgage-backed securities attributable to credit-related losses	3	'	'	'	'	'	'	'	'
Other-than-temporary credit-related losses in held to maturity	797	'	'	'	'	'	'	'	'
Other-than-temporary credit-related losses in available for sale	$184	'	'	'	'	'	'	'	'

Securities_Other_securities_De

Securities (Other securities) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Investments, Debt and Equity Securities [Abstract]	'	'
FHLB	$14.30	$15.60
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]	'	'
Investment [Line Items]	'	'
Percentage of mortgage-backed securities issued by government-sponsored enterprises	97.00%	'

Loans_and_Leases_Loans_and_lea

Loans and Leases (Loans and leases receivable) (Details) (USD $)

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

In Thousands, unless otherwise specified

Commercial

Commercial

Commercial real estate

Commercial real estate

Agricultural and agricultural real estate

Agricultural and agricultural real estate

Commercial and Commercial Real Estate

Commercial and Commercial Real Estate

Commercial and Commercial Real Estate

Commercial and Commercial Real Estate

Residential real estate

Residential real estate

Residential real estate

Residential real estate

Consumer

Consumer

Consumer

Gross Loans and Leases Receivable Held to Maturity

Gross Loans and Leases Receivable Held to Maturity

Minimum

Maximum

Minimum

Maximum

Citizens Finance Co

Loans and Finance Receivables

Loans and Leases [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Loans and leases receivable held to maturity

$3,800,424

$3,500,109

$1,024,712

$950,197

$1,684,832

$1,529,683

$404,423

$376,735

$2,709,544

$2,479,880

'

'

$360,309

$349,349

'

'

$326,148

$294,145

'

$3,800,424

$3,500,109

Unearned discount

-98

-168

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred loan fees

-2,021

-2,989

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total net loans and leases receivable held to maturity

3,798,305

3,496,952

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Loans covered under loss share agreements

3,850

5,749

'

'

'

'

573

543

1,188

2,314

'

'

1,762

2,280

'

'

327

612

'

'

'

Allowance for loan and lease losses

-41,698

-41,685

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Loans and leases receivable, net

$3,760,457

$3,461,016

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Length of loan agreements

'

'

'

'

'

'

'

'

'

'

'1 year

'5 years

'

'

'10 years

'30 years

'

'

'

'

'

Concentration risk, percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

22.00%

'

'

Loans_and_Leases_Allowance_for

Loans and Leases (Allowance for credit losses on financing receivables) (Details) (USD $)	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'
Ending Balance Under ASC 310-10-35	$3,405	'	$6,717	'	'	'
Ending Balance Under ASC 450-20	38,293	'	34,968	'	'	'
Total	41,698	40,892	41,685	41,311	37,623	38,715
Ending Balance Evaluated for Impairment Under ASC 310-10-35	61,584	'	71,961	'	'	'
Ending Balance Evaluated for Impairment Under ASC 450-20	3,738,840	'	3,428,148	'	'	'
Total	3,800,424	'	3,500,109	'	'	'
Commercial	'	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'
Ending Balance Under ASC 310-10-35	451	'	2,817	'	'	'
Ending Balance Under ASC 450-20	10,904	'	10,282	'	'	'
Total	11,355	11,927	13,099	13,096	9,436	11,388
Ending Balance Evaluated for Impairment Under ASC 310-10-35	8,278	'	14,644	'	'	'
Ending Balance Evaluated for Impairment Under ASC 450-20	1,016,434	'	935,553	'	'	'
Total	1,024,712	'	950,197	'	'	'
Commercial real estate	'	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'
Ending Balance Under ASC 310-10-35	1,176	'	818	'	'	'
Ending Balance Under ASC 450-20	14,969	'	13,334	'	'	'
Total	16,145	14,680	14,152	14,043	13,671	14,473
Ending Balance Evaluated for Impairment Under ASC 310-10-35	33,280	'	28,299	'	'	'
Ending Balance Evaluated for Impairment Under ASC 450-20	1,651,552	'	1,501,384	'	'	'
Total	1,684,832	'	1,529,683	'	'	'
Agricultural and agricultural real estate	'	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'
Ending Balance Under ASC 310-10-35	67	'	756	'	'	'
Ending Balance Under ASC 450-20	3,049	'	2,236	'	'	'
Total	3,116	2,788	2,992	2,816	3,055	2,138
Ending Balance Evaluated for Impairment Under ASC 310-10-35	5,689	'	16,667	'	'	'
Ending Balance Evaluated for Impairment Under ASC 450-20	398,734	'	360,068	'	'	'
Total	404,423	'	376,735	'	'	'
Residential real estate	'	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'
Ending Balance Under ASC 310-10-35	424	'	605	'	'	'
Ending Balance Under ASC 450-20	3,199	'	3,115	'	'	'
Total	3,623	3,815	3,720	3,537	3,580	3,543
Ending Balance Evaluated for Impairment Under ASC 310-10-35	8,187	'	7,214	'	'	'
Ending Balance Evaluated for Impairment Under ASC 450-20	352,122	'	342,135	'	'	'
Total	360,309	'	349,349	'	'	'
Consumer	'	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'
Ending Balance Under ASC 310-10-35	1,287	'	1,721	'	'	'
Ending Balance Under ASC 450-20	5,966	'	6,001	'	'	'
Total	7,253	7,516	7,722	7,819	7,881	7,173
Ending Balance Evaluated for Impairment Under ASC 310-10-35	6,150	'	5,137	'	'	'
Ending Balance Evaluated for Impairment Under ASC 450-20	319,998	'	289,008	'	'	'
Total	326,148	'	294,145	'	'	'
Unallocated	'	'	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'	'	'
Ending Balance Under ASC 310-10-35	0	'	0	'	'	'
Ending Balance Under ASC 450-20	206	'	0	'	'	'
Total	206	166	0	0	0	0
Ending Balance Evaluated for Impairment Under ASC 310-10-35	0	'	0	'	'	'
Ending Balance Evaluated for Impairment Under ASC 450-20	0	'	0	'	'	'
Total	$0	'	$0	'	'	'

Loans_and_Leases_Financing_rec

Loans and Leases (Financing receivables, non accrual status) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Receivables [Abstract]	'	'
Nonaccrual loans	$25,802	$29,313
Nonaccrual troubled debt restructured loans	4,328	13,081
Total nonaccrual loans	30,130	42,394
Accruing loans past due 90 days or more	0	24
Performing troubled debt restructured loans	$11,994	$19,353

Loans_and_Leases_Troubled_debt

Loans and Leases (Troubled debt restructurings on financing receivables) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
	loans	loans	loans	loans
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	1	1	5	11
Pre- Modification Recorded Investment	$60	$65	$3,753	$21,377
Post- Modification Recorded Investment	60	65	3,753	21,377
Commercial	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	0	0	0	3
Pre- Modification Recorded Investment	0	0	0	17,873
Post- Modification Recorded Investment	0	0	0	17,873
Commercial real estate	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	0	0	1	0
Pre- Modification Recorded Investment	0	0	298	0
Post- Modification Recorded Investment	0	0	298	0
Commercial and Commercial Real Estate	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	0	0	1	3
Pre- Modification Recorded Investment	0	0	298	17,873
Post- Modification Recorded Investment	0	0	298	17,873
Agricultural and agricultural real estate	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	1	0	3	3
Pre- Modification Recorded Investment	60	0	3,417	2,576
Post- Modification Recorded Investment	60	0	3,417	2,576
Residential real estate	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	0	1	1	4
Pre- Modification Recorded Investment	0	65	38	762
Post- Modification Recorded Investment	0	65	38	762
Consumer	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	0	0	0	1
Pre- Modification Recorded Investment	0	0	0	166
Post- Modification Recorded Investment	$0	$0	$0	$166

Loans_and_Leases_Troubled_debt1

Loans and Leases (Troubled debt loans with payment defaults) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
	loans	loans	loans	loans
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	1	1	1	4
Recorded Investment	$60	$13,000	$60	$17,837
Commercial	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	0	1	0	2
Recorded Investment	0	13,000	0	17,670
Commercial real estate	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	0	0	0	0
Recorded Investment	0	0	0	0
Commercial and Commercial Real Estate	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	0	1	0	2
Recorded Investment	0	13,000	0	17,670
Agricultural and agricultural real estate	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	1	0	1	0
Recorded Investment	60	0	60	0
Residential real estate	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	0	0	0	2
Recorded Investment	0	0	0	167
Consumer	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	0	0	0	0
Recorded Investment	$0	$0	$0	$0

Loans_and_Leases_Troubled_debt2

Loans and Leases (Troubled debt in text) (Details)	Sep. 30, 2014
	loans
Receivables [Abstract]	'
Number of loans classified as doubtful or loss	0

Loans_and_Leases_Loans_and_lea1

Loans and Leases (Loans and leases not covered by share agreements (credit quality indicator)) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans and leases receivable	$3,800,424	$3,500,109
Commercial	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans and leases receivable	1,024,712	950,197
Commercial real estate	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans and leases receivable	1,684,832	1,529,683
Commercial and Commercial Real Estate	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans and leases receivable	2,709,544	2,479,880
Agricultural and agricultural real estate	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans and leases receivable	404,423	376,735
Residential real estate	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans and leases receivable	360,309	349,349
Consumer	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans and leases receivable	326,148	294,145
Pass	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans and leases receivable	3,487,189	3,215,775
Pass | Commercial	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans and leases receivable	913,923	871,825
Pass | Commercial real estate	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans and leases receivable	1,536,940	1,390,820
Pass | Commercial and Commercial Real Estate	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans and leases receivable	2,450,863	2,262,645
Pass | Agricultural and agricultural real estate	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans and leases receivable	377,733	335,821
Pass | Residential real estate	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans and leases receivable	341,984	333,161
Pass | Consumer	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans and leases receivable	316,609	284,148
Nonpass	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans and leases receivable	313,235	284,334
Nonpass | Commercial	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans and leases receivable	110,789	78,372
Nonpass | Commercial real estate	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans and leases receivable	147,892	138,863
Nonpass | Commercial and Commercial Real Estate	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans and leases receivable	258,681	217,235
Nonpass | Agricultural and agricultural real estate	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans and leases receivable	26,690	40,914
Nonpass | Residential real estate	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans and leases receivable	18,325	16,188
Nonpass | Consumer	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans and leases receivable	$9,539	$9,997

Loans_and_Leases_Loans_and_lea2

Loans and Leases (Loans and leases not covered by share agreements (in text)) (Details)	Sep. 30, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]	'	'
Loans delinquent 30 to 89 days, percentage	0.32%	0.30%
Nonpass	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Percent of nonaccrual loans	9.00%	15.00%
Special Mention	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Percent of loans	69.00%	59.00%
Substandard	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Percent of loans	31.00%	38.00%
Doubtful	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Percent of loans	'	3.00%

Loans_and_Leases_Loans_and_lea3

Loans and Leases (Loans and leases not covered by share agreements (past due financing receivables)) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	$10,734	$8,380
60-89 Days Past Due	1,335	2,085
90 Days or More Past Due	0	24
Total Past Due	12,069	10,489
Current	3,758,225	3,447,226
Nonaccrual	30,130	42,394
Total	3,800,424	3,500,109
Commercial	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	5,163	697
60-89 Days Past Due	124	741
90 Days or More Past Due	0	0
Total Past Due	5,287	1,438
Current	1,013,124	935,508
Nonaccrual	6,301	13,251
Total	1,024,712	950,197
Commercial real estate	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	941	3,042
60-89 Days Past Due	101	199
90 Days or More Past Due	0	24
Total Past Due	1,042	3,265
Current	1,670,756	1,511,618
Nonaccrual	13,034	14,800
Total	1,684,832	1,529,683
Commercial and Commercial Real Estate	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	6,104	3,739
60-89 Days Past Due	225	940
90 Days or More Past Due	0	24
Total Past Due	6,329	4,703
Current	2,683,880	2,447,126
Nonaccrual	19,335	28,051
Total	2,709,544	2,479,880
Agricultural and agricultural real estate	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	89	818
60-89 Days Past Due	0	0
90 Days or More Past Due	0	0
Total Past Due	89	818
Current	402,319	369,907
Nonaccrual	2,015	6,010
Total	404,423	376,735
Residential real estate	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	1,626	1,199
60-89 Days Past Due	120	56
90 Days or More Past Due	0	0
Total Past Due	1,746	1,255
Current	352,362	342,735
Nonaccrual	6,201	5,359
Total	360,309	349,349
Consumer	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	2,915	2,624
60-89 Days Past Due	990	1,089
90 Days or More Past Due	0	0
Total Past Due	3,905	3,713
Current	319,664	287,458
Nonaccrual	2,579	2,974
Total	$326,148	$294,145

Loans_and_Leases_Impaired_loan

Loans and Leases (Impaired loans not covered by loss share agreements) (Details) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2014	Dec. 31, 2013
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]	'	'	'
Impaired loans with a related allowance, Unpaid Contractual Balance	$18,574	$18,574	$36,828
Impaired loans without a related allowance, Unpaid Contractual Balance	50,033	50,033	42,400
Total impaired loans held to maturity, Unpaid Contractual Balance	68,607	68,607	79,228
Impaired Financing Receivable, Recorded Investment [Abstract]	'	'	'
Impaired loans with a related allowance, Loan Balance	18,144	18,144	36,573
Impaired loans without a related allowance, Loan Balance	43,440	43,440	35,388
Total impaired loans held to maturity, Loan Balance	61,584	61,584	71,961
Impaired loans, Related Allowance Recorded	3,405	3,405	6,717
Impaired Financing Receivable, Average Recorded Investment [Abstract]	'	'	'
Impaired loans with a related allowance, Avg. Loan Balance	34,423	25,806	27,235
Impaired loans without a related allowance, Avg. Loan Balance	36,733	38,352	50,768
Total impaired loans held to maturity, Avg. Loan Balance	71,156	64,158	78,003
Impaired Financing Receivable, Interest Income, Accrual Method [Abstract]	'	'	'
Impaired loans with a related allowance, Interest Income Recognized	48	215	787
Impaired loans without a related allowance, Interest Income Recognized	635	1,051	933
Total impaired loans held to maturity, Interest Income Recognized	683	1,266	1,720
Commercial	'	'	'
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]	'	'	'
Impaired loans with a related allowance, Unpaid Contractual Balance	4,751	4,751	7,901
Impaired loans without a related allowance, Unpaid Contractual Balance	4,222	4,222	7,724
Total impaired loans held to maturity, Unpaid Contractual Balance	8,973	8,973	15,625
Impaired Financing Receivable, Recorded Investment [Abstract]	'	'	'
Impaired loans with a related allowance, Loan Balance	4,675	4,675	7,901
Impaired loans without a related allowance, Loan Balance	3,603	3,603	6,743
Total impaired loans held to maturity, Loan Balance	8,278	8,278	14,644
Impaired loans, Related Allowance Recorded	451	451	2,817
Impaired Financing Receivable, Average Recorded Investment [Abstract]	'	'	'
Impaired loans with a related allowance, Avg. Loan Balance	6,960	7,022	5,343
Impaired loans without a related allowance, Avg. Loan Balance	2,620	3,519	9,394
Total impaired loans held to maturity, Avg. Loan Balance	9,580	10,541	14,737
Impaired Financing Receivable, Interest Income, Accrual Method [Abstract]	'	'	'
Impaired loans with a related allowance, Interest Income Recognized	0	10	38
Impaired loans without a related allowance, Interest Income Recognized	20	60	89
Total impaired loans held to maturity, Interest Income Recognized	20	70	127
Commercial real estate	'	'	'
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]	'	'	'
Impaired loans with a related allowance, Unpaid Contractual Balance	4,092	4,092	9,164
Impaired loans without a related allowance, Unpaid Contractual Balance	33,626	33,626	24,830
Total impaired loans held to maturity, Unpaid Contractual Balance	37,718	37,718	33,994
Impaired Financing Receivable, Recorded Investment [Abstract]	'	'	'
Impaired loans with a related allowance, Loan Balance	3,832	3,832	8,909
Impaired loans without a related allowance, Loan Balance	29,448	29,448	19,390
Total impaired loans held to maturity, Loan Balance	33,280	33,280	28,299
Impaired loans, Related Allowance Recorded	1,176	1,176	818
Impaired Financing Receivable, Average Recorded Investment [Abstract]	'	'	'
Impaired loans with a related allowance, Avg. Loan Balance	11,645	6,294	7,686
Impaired loans without a related allowance, Avg. Loan Balance	23,937	23,325	25,676
Total impaired loans held to maturity, Avg. Loan Balance	35,582	29,619	33,362
Impaired Financing Receivable, Interest Income, Accrual Method [Abstract]	'	'	'
Impaired loans with a related allowance, Interest Income Recognized	7	40	282
Impaired loans without a related allowance, Interest Income Recognized	595	883	538
Total impaired loans held to maturity, Interest Income Recognized	602	923	820
Commercial and Commercial Real Estate	'	'	'
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]	'	'	'
Impaired loans with a related allowance, Unpaid Contractual Balance	8,843	8,843	17,065
Impaired loans without a related allowance, Unpaid Contractual Balance	37,848	37,848	32,554
Total impaired loans held to maturity, Unpaid Contractual Balance	46,691	46,691	49,619
Impaired Financing Receivable, Recorded Investment [Abstract]	'	'	'
Impaired loans with a related allowance, Loan Balance	8,507	8,507	16,810
Impaired loans without a related allowance, Loan Balance	33,051	33,051	26,133
Total impaired loans held to maturity, Loan Balance	41,558	41,558	42,943
Impaired loans, Related Allowance Recorded	1,627	1,627	3,635
Impaired Financing Receivable, Average Recorded Investment [Abstract]	'	'	'
Impaired loans with a related allowance, Avg. Loan Balance	18,605	13,316	13,029
Impaired loans without a related allowance, Avg. Loan Balance	26,557	26,844	35,070
Total impaired loans held to maturity, Avg. Loan Balance	45,162	40,160	48,099
Impaired Financing Receivable, Interest Income, Accrual Method [Abstract]	'	'	'
Impaired loans with a related allowance, Interest Income Recognized	7	50	320
Impaired loans without a related allowance, Interest Income Recognized	615	943	627
Total impaired loans held to maturity, Interest Income Recognized	622	993	947
Agricultural and agricultural real estate	'	'	'
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]	'	'	'
Impaired loans with a related allowance, Unpaid Contractual Balance	3,368	3,368	13,818
Impaired loans without a related allowance, Unpaid Contractual Balance	3,749	3,749	2,849
Total impaired loans held to maturity, Unpaid Contractual Balance	7,117	7,117	16,667
Impaired Financing Receivable, Recorded Investment [Abstract]	'	'	'
Impaired loans with a related allowance, Loan Balance	3,368	3,368	13,818
Impaired loans without a related allowance, Loan Balance	2,321	2,321	2,849
Total impaired loans held to maturity, Loan Balance	5,689	5,689	16,667
Impaired loans, Related Allowance Recorded	67	67	756
Impaired Financing Receivable, Average Recorded Investment [Abstract]	'	'	'
Impaired loans with a related allowance, Avg. Loan Balance	4,021	4,176	7,537
Impaired loans without a related allowance, Avg. Loan Balance	2,100	3,731	9,985
Total impaired loans held to maturity, Avg. Loan Balance	6,121	7,907	17,522
Impaired Financing Receivable, Interest Income, Accrual Method [Abstract]	'	'	'
Impaired loans with a related allowance, Interest Income Recognized	12	67	354
Impaired loans without a related allowance, Interest Income Recognized	3	10	189
Total impaired loans held to maturity, Interest Income Recognized	15	77	543
Residential real estate	'	'	'
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]	'	'	'
Impaired loans with a related allowance, Unpaid Contractual Balance	2,024	2,024	2,460
Impaired loans without a related allowance, Unpaid Contractual Balance	6,616	6,616	5,345
Total impaired loans held to maturity, Unpaid Contractual Balance	8,640	8,640	7,805
Impaired Financing Receivable, Recorded Investment [Abstract]	'	'	'
Impaired loans with a related allowance, Loan Balance	1,939	1,939	2,460
Impaired loans without a related allowance, Loan Balance	6,248	6,248	4,754
Total impaired loans held to maturity, Loan Balance	8,187	8,187	7,214
Impaired loans, Related Allowance Recorded	424	424	605
Impaired Financing Receivable, Average Recorded Investment [Abstract]	'	'	'
Impaired loans with a related allowance, Avg. Loan Balance	6,308	3,604	3,179
Impaired loans without a related allowance, Avg. Loan Balance	6,449	6,055	4,198
Total impaired loans held to maturity, Avg. Loan Balance	12,757	9,659	7,377
Impaired Financing Receivable, Interest Income, Accrual Method [Abstract]	'	'	'
Impaired loans with a related allowance, Interest Income Recognized	8	17	13
Impaired loans without a related allowance, Interest Income Recognized	0	64	80
Total impaired loans held to maturity, Interest Income Recognized	8	81	93
Consumer	'	'	'
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]	'	'	'
Impaired loans with a related allowance, Unpaid Contractual Balance	4,339	4,339	3,485
Impaired loans without a related allowance, Unpaid Contractual Balance	1,820	1,820	1,652
Total impaired loans held to maturity, Unpaid Contractual Balance	6,159	6,159	5,137
Impaired Financing Receivable, Recorded Investment [Abstract]	'	'	'
Impaired loans with a related allowance, Loan Balance	4,330	4,330	3,485
Impaired loans without a related allowance, Loan Balance	1,820	1,820	1,652
Total impaired loans held to maturity, Loan Balance	6,150	6,150	5,137
Impaired loans, Related Allowance Recorded	1,287	1,287	1,721
Impaired Financing Receivable, Average Recorded Investment [Abstract]	'	'	'
Impaired loans with a related allowance, Avg. Loan Balance	5,489	4,710	3,490
Impaired loans without a related allowance, Avg. Loan Balance	1,627	1,722	1,515
Total impaired loans held to maturity, Avg. Loan Balance	7,116	6,432	5,005
Impaired Financing Receivable, Interest Income, Accrual Method [Abstract]	'	'	'
Impaired loans with a related allowance, Interest Income Recognized	21	81	100
Impaired loans without a related allowance, Interest Income Recognized	17	34	37
Total impaired loans held to maturity, Interest Income Recognized	$38	$115	$137

Loans_and_Leases_Carrying_amou

Loans and Leases (Carrying amount loans covered by loss share agreements) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Loans covered by loss share agreement (carrying amount) [Line Items]	'	'
Impaired purchased loans	$266	$1,087
Non impaired purchased loans	3,584	4,662
Total covered loans	3,850	5,749
Commercial and commercial real estate	'	'
Loans covered by loss share agreement (carrying amount) [Line Items]	'	'
Impaired purchased loans	0	549
Non impaired purchased loans	1,188	1,765
Total covered loans	1,188	2,314
Agricultural and agricultural real estate	'	'
Loans covered by loss share agreement (carrying amount) [Line Items]	'	'
Impaired purchased loans	0	0
Non impaired purchased loans	573	543
Total covered loans	573	543
Residential real estate	'	'
Loans covered by loss share agreement (carrying amount) [Line Items]	'	'
Impaired purchased loans	0	0
Non impaired purchased loans	1,762	2,280
Total covered loans	1,762	2,280
Consumer	'	'
Loans covered by loss share agreement (carrying amount) [Line Items]	'	'
Impaired purchased loans	266	538
Non impaired purchased loans	61	74
Total covered loans	$327	$612

Loans_and_Leases_Carrying_amou1

Loans and Leases (Carrying amount loans covered by loss share agreements (in text)) (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014	Jul. 02, 2009	Jul. 02, 2009	Jul. 02, 2009
	Galena State Bank & Trust Co.	Galena State Bank & Trust Co.	Galena State Bank & Trust Co.	Galena State Bank & Trust Co.	Elizabeth State Bank	Elizabeth State Bank	Elizabeth State Bank
	agreements	Non-residential real estate	Non-residential real estate	Residential real estate		Impaired Purchased Loans	Nonimpaired Purchased Loans
		Losses	Recoveries
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'	'	'
Contractually required payments of loans acquired	'	'	'	'	$42,700,000	$13,800,000	$28,900,000
Estimated fair value of loans acquired	'	'	'	'	37,800,000	9,000,000	28,700,000
Number of loss share agreements	2	'	'	'	'	'	'
Shared loss arrangement, maximum covered assets	$10,000,000	'	'	'	'	'	'
Loss sharing agreement, term	'	'5 years	'8 years	'10 years	'	'	'

Allowance_for_Loan_and_Lease_L2

Allowance for Loan and Lease Losses (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'	'
Beginning Balance	$40,892	$37,623	$41,685	$38,715
Charge-offs	-2,649	-2,513	-14,707	-8,350
Recoveries	902	1,052	3,085	3,298
Provision	2,553	5,149	11,635	7,648
Ending Balance	41,698	41,311	41,698	41,311
Commercial	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'	'
Beginning Balance	11,927	9,436	13,099	11,388
Charge-offs	-875	-163	-7,940	-1,422
Recoveries	145	78	552	983
Provision	158	3,745	5,644	2,147
Ending Balance	11,355	13,096	11,355	13,096
Commercial real estate	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'	'
Beginning Balance	14,680	13,671	14,152	14,473
Charge-offs	-295	-630	-1,379	-2,561
Recoveries	539	514	1,833	1,279
Provision	1,221	488	1,539	852
Ending Balance	16,145	14,043	16,145	14,043
Agricultural	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'	'
Beginning Balance	2,788	3,055	2,992	2,138
Charge-offs	-338	0	-1,974	-23
Recoveries	5	1	9	100
Provision	661	-240	2,089	601
Ending Balance	3,116	2,816	3,116	2,816
Residential real estate	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'	'
Beginning Balance	3,815	3,580	3,720	3,543
Charge-offs	-21	-450	-225	-856
Recoveries	29	76	85	102
Provision	-200	331	43	748
Ending Balance	3,623	3,537	3,623	3,537
Consumer	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'	'
Beginning Balance	7,516	7,881	7,722	7,173
Charge-offs	-1,120	-1,270	-3,189	-3,488
Recoveries	184	383	606	834
Provision	673	825	2,114	3,300
Ending Balance	7,253	7,819	7,253	7,819
Unallocated	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Roll Forward]	'	'	'	'
Beginning Balance	166	0	0	0
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	40	0	206	0
Ending Balance	$206	$0	$206	$0

Goodwill_Core_Deposit_Premium_2

Goodwill, Core Deposit Premium and Other Intangible Assets (Goodwill) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Goodwill and Intangible Assets Disclosure [Abstract]	'	'
Goodwill	$35,583	$35,583

Goodwill_Core_Deposit_Premium_3

Goodwill, Core Deposit Premium and Other Intangible Assets (Carrying amount of intangible assets (incl accumulated amortization) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	$58,439	$54,406
Accumulated Amortization	25,040	21,447
Net Carrying Amount	33,399	32,959
Core deposit intangibles	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	21,069	21,069
Accumulated Amortization	12,049	10,345
Net Carrying Amount	9,020	10,724
Mortgage servicing rights	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	36,193	32,160
Accumulated Amortization	12,228	10,372
Net Carrying Amount	23,965	21,788
Customer relationship intangible	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	1,177	1,177
Accumulated Amortization	763	730
Net Carrying Amount	$414	$447

Goodwill_Core_Deposit_Premium_4

Goodwill, Core Deposit Premium and Other Intangible Assets (Estimated future amortization expense for amortizable intangible assets) (Details) (USD $)	Sep. 30, 2014
In Thousands, unless otherwise specified
Future amortization expense for amortizable intangible assets [Line Items]	'
Three months ending December 31, 2014	$1,911
Year ending December 31, 2015	7,457
Year ending December 31, 2016	6,446
Year ending December 31, 2017	5,458
Year ending December 31, 2018	4,491
Year ending December 31, 2019	3,509
Thereafter	4,127
Core deposit intangibles	'
Future amortization expense for amortizable intangible assets [Line Items]	'
Three months ending December 31, 2014	476
Year ending December 31, 2015	1,780
Year ending December 31, 2016	1,575
Year ending December 31, 2017	1,393
Year ending December 31, 2018	1,232
Year ending December 31, 2019	1,056
Thereafter	1,508
Mortgage servicing rights	'
Future amortization expense for amortizable intangible assets [Line Items]	'
Three months ending December 31, 2014	1,424
Year ending December 31, 2015	5,635
Year ending December 31, 2016	4,830
Year ending December 31, 2017	4,025
Year ending December 31, 2018	3,220
Year ending December 31, 2019	2,415
Thereafter	2,416
Customer relationship intangible	'
Future amortization expense for amortizable intangible assets [Line Items]	'
Three months ending December 31, 2014	11
Year ending December 31, 2015	42
Year ending December 31, 2016	41
Year ending December 31, 2017	40
Year ending December 31, 2018	39
Year ending December 31, 2019	38
Thereafter	$203

Goodwill_Core_Deposit_Premium_5

Goodwill, Core Deposit Premium and Other Intangible Assets (Mortgage loans servicing) (Details) (USD $)	9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Valuation servicing rights in tranches [Line Items]	'	'	'
Mortgage loans serviced for others	$3,360,000,000	'	3,050,000,000
Servicing asset at amortized value	33,260,000	31,179,000	32,000,000
Mortgage Servicing Rights 15-year Tranche [Member]	'	'	'
Valuation servicing rights in tranches [Line Items]	'	'	'
Servicing asset, agreement term	'15 years	'	'
Mortgage Servicing Rights 30-year Tranche [Member]	'	'	'
Valuation servicing rights in tranches [Line Items]	'	'	'
Servicing asset, agreement term	'30 years	'	'
Mortgage Servicing Rights [Member]	'	'	'
Valuation servicing rights in tranches [Line Items]	'	'	'
Prepayment rate	11.00%	'	9.65%
Discount rate	9.68%	'	10.15%
Fees collected for servicing of mortgage loans	$6,400,000	$4,900,000	'
Mortgage Servicing Rights [Member] | Minimum	'	'	'
Valuation servicing rights in tranches [Line Items]	'	'	'
Average cap rate	0.75%	'	0.79%
Mortgage Servicing Rights [Member] | Maximum	'	'	'
Valuation servicing rights in tranches [Line Items]	'	'	'
Average cap rate	1.39%	'	1.39%

Goodwill_Core_Deposit_Premium_6

Goodwill, Core Deposit Premium and Other Intangible Assets (Changes in capitalized mortgage servicing rights) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Finite-lived Intangible Assets [Roll Forward]	'	'	'	'	'
Balance at beginning of period	'	'	$21,788	$15,653	'
Originations	'	'	5,955	10,595	'
Amortization	'	'	-3,778	-5,548	'
Valuation adjustment	0	0	0	496	'
Balance at end of period	23,965	21,196	23,965	21,196	'
Fair value of mortgage servicing rights	$33,260	$31,179	$33,260	$31,179	$32,000
Mortgage servicing rights, net to servicing portfolio	'	'	0.71%	0.73%	'

Derivative_Financial_Instrumen2

Derivative Financial Instruments (Cash collateral on derivative financial instruments) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Derivative [Line Items]	'	'
Cash pledged as collateral	$3,800,000	$5,400,000
Counterparties	'	'
Derivative [Line Items]	'	'
Cash pledged as collateral	$0	$540,000

Derivative_Financial_Instrumen3

Derivative Financial Instruments (Estimated cash payments and reclassification to interest expense) (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Change in net unrealized losses on cash flow hedges	$1.70
Estimated amount to be reclassified from accumulated other comprehensive income to interest expense within the next twelve months	($2.30)

Derivative_Financial_Instrumen4

Derivative Financial Instruments (Executed interest rate swap) (Details) (Derivative financial instruments, USD $)	Apr. 20, 2011	Mar. 31, 2014	Dec. 31, 2009	Mar. 31, 2014
In Millions, unless otherwise specified		Cash Flow Hedges	Cash Flow Hedges	Cash Flow Hedges
		transaction	transaction	New Contracts
				transaction
Derivative [Line Items]	'	'	'	'
Derivative, notional amount	$15	$85	'	$16.60
Number of swap transactions	'	5	3	2

Derivative_Financial_Instrumen5

Derivative Financial Instruments (Balance sheet category and fair values of derivative instruments (cash flow hedges)) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Other Liabilities | Interest Rate Swap 1	'	'
Derivatives, Fair Value [Line Items]	'	'
Notional Amount	$10,713	$11,719
Fair Value	-295	-457
Receive Rate	2.90%	2.92%
Weighted Average Pay Rate	5.14%	5.14%
Other Liabilities | Interest Rate Swap 7	'	'
Derivatives, Fair Value [Line Items]	'	'
Notional Amount	25,000	'
Fair Value	-117	'
Receive Rate	0.24%	'
Weighted Average Pay Rate	2.26%	'
Other Liabilities | Interest Rate Swap 3	'	'
Derivatives, Fair Value [Line Items]	'	'
Notional Amount	20,000	20,000
Fair Value	-1,120	-1,507
Receive Rate	0.23%	0.24%
Weighted Average Pay Rate	3.22%	3.22%
Other Liabilities | Interest Rate Swap 4	'	'
Derivatives, Fair Value [Line Items]	'	'
Notional Amount	20,000	20,000
Fair Value	-1,579	-1,587
Receive Rate	0.23%	0.24%
Weighted Average Pay Rate	3.36%	3.36%
Other Liabilities | Interest Rate Swap 2	'	'
Derivatives, Fair Value [Line Items]	'	'
Notional Amount	'	25,000
Fair Value	'	-146
Receive Rate	'	0.24%
Weighted Average Pay Rate	'	2.58%
Other Assets | Interest Rate Swap 5	'	'
Derivatives, Fair Value [Line Items]	'	'
Notional Amount	10,000	'
Fair Value	48	'
Receive Rate	0.24%	'
Weighted Average Pay Rate	1.67%	'
Other Assets | Interest Rate Swap 6	'	'
Derivatives, Fair Value [Line Items]	'	'
Notional Amount	10,000	'
Fair Value	$48	'
Receive Rate	0.24%	'
Weighted Average Pay Rate	1.66%	'

Derivative_Financial_Instrumen6

Derivative Financial Instruments (Gains (losses) recognized on derivatives (cash flow hedges)) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Interest Expense | Interest Rate Swap 1	'	'	'	'
Trading Activity, Gains and Losses, Net [Line Items]	'	'	'	'
Effective Portion, Recognized in OCI, Amount of Gain (Loss)	$68	$27	$162	$203
Effective Portion, Reclassified from AOCI into Income, Amount of Gain (Loss)	-63	-69	-192	-210
Interest Expense | Interest Rate Swap 7	'	'	'	'
Trading Activity, Gains and Losses, Net [Line Items]	'	'	'	'
Effective Portion, Recognized in OCI, Amount of Gain (Loss)	193	'	-117	'
Effective Portion, Reclassified from AOCI into Income, Amount of Gain (Loss)	-129	'	-258	'
Interest Expense | Interest Rate Swap 3	'	'	'	'
Trading Activity, Gains and Losses, Net [Line Items]	'	'	'	'
Effective Portion, Recognized in OCI, Amount of Gain (Loss)	208	7	387	548
Effective Portion, Reclassified from AOCI into Income, Amount of Gain (Loss)	-153	-151	-455	-446
Interest Expense | Interest Rate Swap 4	'	'	'	'
Trading Activity, Gains and Losses, Net [Line Items]	'	'	'	'
Effective Portion, Recognized in OCI, Amount of Gain (Loss)	248	-15	8	1,115
Effective Portion, Reclassified from AOCI into Income, Amount of Gain (Loss)	-158	-156	-473	-460
Interest Expense | Interest Rate Swap 5	'	'	'	'
Trading Activity, Gains and Losses, Net [Line Items]	'	'	'	'
Effective Portion, Recognized in OCI, Amount of Gain (Loss)	89	'	48	'
Effective Portion, Reclassified from AOCI into Income, Amount of Gain (Loss)	-37	'	-74	'
Interest Expense | Interest Rate Swap 6	'	'	'	'
Trading Activity, Gains and Losses, Net [Line Items]	'	'	'	'
Effective Portion, Recognized in OCI, Amount of Gain (Loss)	88	'	48	'
Effective Portion, Reclassified from AOCI into Income, Amount of Gain (Loss)	-37	'	-73	'
Interest Expense | Interest Rate Swap 2	'	'	'	'
Trading Activity, Gains and Losses, Net [Line Items]	'	'	'	'
Effective Portion, Recognized in OCI, Amount of Gain (Loss)	0	138	146	419
Effective Portion, Reclassified from AOCI into Income, Amount of Gain (Loss)	0	-147	-146	-436
Other Income | Interest Rate Swap 1	'	'	'	'
Trading Activity, Gains and Losses, Net [Line Items]	'	'	'	'
Ineffective Portion, Recognized in Income on Derivatives, Amount of Gain (Loss)	0	0	0	0
Other Income | Interest Rate Swap 7	'	'	'	'
Trading Activity, Gains and Losses, Net [Line Items]	'	'	'	'
Ineffective Portion, Recognized in Income on Derivatives, Amount of Gain (Loss)	0	'	0	'
Other Income | Interest Rate Swap 3	'	'	'	'
Trading Activity, Gains and Losses, Net [Line Items]	'	'	'	'
Ineffective Portion, Recognized in Income on Derivatives, Amount of Gain (Loss)	0	0	0	0
Other Income | Interest Rate Swap 4	'	'	'	'
Trading Activity, Gains and Losses, Net [Line Items]	'	'	'	'
Ineffective Portion, Recognized in Income on Derivatives, Amount of Gain (Loss)	0	0	0	0
Other Income | Interest Rate Swap 5	'	'	'	'
Trading Activity, Gains and Losses, Net [Line Items]	'	'	'	'
Ineffective Portion, Recognized in Income on Derivatives, Amount of Gain (Loss)	0	'	0	'
Other Income | Interest Rate Swap 6	'	'	'	'
Trading Activity, Gains and Losses, Net [Line Items]	'	'	'	'
Ineffective Portion, Recognized in Income on Derivatives, Amount of Gain (Loss)	0	'	0	'
Other Income | Interest Rate Swap 2	'	'	'	'
Trading Activity, Gains and Losses, Net [Line Items]	'	'	'	'
Ineffective Portion, Recognized in Income on Derivatives, Amount of Gain (Loss)	$0	$0	$0	$0

Derivative_Financial_Instrumen7

Derivative Financial Instruments (Balance sheet category and fair values of derivative instruments (not designated as hedging instruments)) (Details) (Not Designated as Hedging Instrument, USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Other Assets | Interest rate lock commitments	'	'
Derivatives, Fair Value [Line Items]	'	'
Notional Amount	$103,933	$63,370
Fair Value	3,291	1,809
Other Assets | Forward Contracts	'	'
Derivatives, Fair Value [Line Items]	'	'
Notional Amount	114,988	117,637
Fair Value	222	1,206
Other Liabilities | Forward Contracts	'	'
Derivatives, Fair Value [Line Items]	'	'
Notional Amount	179,044	53,277
Fair Value	($623)	($133)

Derivative_Financial_Instrumen8

Derivative Financial Instruments (Derivative instruments gains and losses recognized (not designated as hedging instruments)) (Details) (Gain on Sale of Loans Held for Sale, USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Interest rate lock commitments	'	'	'	'
Trading Activity, Gains and Losses, Net [Line Items]	'	'	'	'
Year-to-Date Gain(Loss) Recognized	($1,924)	$5,219	$3,393	($6,047)
Forward commitments	'	'	'	'
Trading Activity, Gains and Losses, Net [Line Items]	'	'	'	'
Year-to-Date Gain(Loss) Recognized	$1,505	($11,430)	($1,474)	($1,289)

Fair_Value_Fair_value_measurem

Fair Value (Fair value measurement recurring) (Details) (USD $)	Sep. 30, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Trading securities	$0		$1,801
Securities available for sale	1,369,703		1,633,902
U.S. government corporations and agencies	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Securities available for sale	13,946		218,303
Mortgage-backed securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Securities available for sale	1,164,877		1,143,947
Obligations of states and political subdivisions	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Securities available for sale	185,811		266,624
Equity securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Securities available for sale	5,069		5,028
Level 1	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Trading securities	0		1,801
Securities available for sale	2,536		4,084
Derivative assets	0		0
Derivative liabilities	0		0
Level 1 | Interest rate lock commitments	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Derivative assets	0		0
Level 1 | Forward commitments	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Derivative assets	0		0
Derivative liabilities	0		0
Level 2	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Trading securities	0		0
Securities available for sale	1,362,319		1,626,520
Derivative assets	96		0
Derivative liabilities	3,111		3,697
Level 2 | Interest rate lock commitments	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Derivative assets	0		0
Level 2 | Forward commitments	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Derivative assets	222		1,206
Derivative liabilities	623		133
Level 3	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Trading securities	0		0
Securities available for sale	4,848		3,298
Derivative assets	0		0
Derivative liabilities	0		0
Level 3 | Interest rate lock commitments	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Derivative assets	3,291		1,809
Level 3 | Forward commitments	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Derivative assets	0		0
Derivative liabilities	0		0
Recurring Basis	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Trading securities	0		1,801
Total assets at fair value	1,373,312		1,638,718
Total liabilities at fair value	3,734		3,830
Recurring Basis | Derivative financial instruments	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Derivative assets	96		'
Derivative liabilities	3,111		3,697
Recurring Basis | Interest rate lock commitments	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Derivative assets	3,291		1,809
Recurring Basis | Forward commitments	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Derivative assets	222		1,206
Derivative liabilities	623		133
Recurring Basis | U.S. government corporations and agencies	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Securities available for sale	13,946		218,303
Recurring Basis | Mortgage-backed securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Securities available for sale	1,164,877		1,143,947
Recurring Basis | Obligations of states and political subdivisions	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Securities available for sale	185,811		266,624
Recurring Basis | Equity securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Securities available for sale	5,069		5,028
Recurring Basis | Level 1	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Trading securities	0		1,801
Total assets at fair value	2,536		5,885
Total liabilities at fair value	0		0
Recurring Basis | Level 1 | Derivative financial instruments	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Derivative assets	0		'
Derivative liabilities	0		0
Recurring Basis | Level 1 | Interest rate lock commitments	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Derivative assets	0		0
Recurring Basis | Level 1 | Forward commitments	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Derivative assets	0		0
Derivative liabilities	0		0
Recurring Basis | Level 1 | U.S. government corporations and agencies	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Securities available for sale	2,536		4,084
Recurring Basis | Level 1 | Mortgage-backed securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Securities available for sale	0		0
Recurring Basis | Level 1 | Obligations of states and political subdivisions	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Securities available for sale	0		0
Recurring Basis | Level 1 | Equity securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Securities available for sale	0		0
Recurring Basis | Level 2	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Trading securities	0		0
Total assets at fair value	1,362,637		1,627,726
Total liabilities at fair value	3,734		3,830
Recurring Basis | Level 2 | Derivative financial instruments	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Derivative assets	96		'
Derivative liabilities	3,111		3,697
Recurring Basis | Level 2 | Interest rate lock commitments	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Derivative assets	0		0
Recurring Basis | Level 2 | Forward commitments	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Derivative assets	222		1,206
Derivative liabilities	623		133
Recurring Basis | Level 2 | U.S. government corporations and agencies	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Securities available for sale	11,410		214,219
Recurring Basis | Level 2 | Mortgage-backed securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Securities available for sale	1,160,029		1,140,649
Recurring Basis | Level 2 | Obligations of states and political subdivisions	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Securities available for sale	185,811		266,624
Recurring Basis | Level 2 | Equity securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Securities available for sale	5,069		5,028
Recurring Basis | Level 3	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Trading securities	0		0
Total assets at fair value	8,139		5,107
Total liabilities at fair value	0		0
Recurring Basis | Level 3 | Derivative financial instruments	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Derivative assets	0		'
Derivative liabilities	0		0
Recurring Basis | Level 3 | Interest rate lock commitments	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Derivative assets	3,291	[1]	1,809
Recurring Basis | Level 3 | Forward commitments	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Derivative assets	0		0
Derivative liabilities	0		0
Recurring Basis | Level 3 | U.S. government corporations and agencies	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Securities available for sale	0		0
Recurring Basis | Level 3 | Mortgage-backed securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Securities available for sale	4,848		3,298
Recurring Basis | Level 3 | Obligations of states and political subdivisions	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Securities available for sale	0		0
Recurring Basis | Level 3 | Equity securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Securities available for sale	$0		$0
[1]	The significant unobservable input used in the fair value measurement is the closing ratio, which represents the percentage of loans currently in a lock position which management estimates will ultimately close. The closing ratio calculation takes into consideration historical data and loan-level data; therefore providing a range would not be meaningful. The weighted average closing ratio at September 30, 2014 was 84%.

Fair_Value_Fair_value_measurem1

Fair Value (Fair value measurement non-recurring) (Details) (Nonrecurring Basis, USD $)	Sep. 30, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	$14,976		$33,199
Other real estate owned	20,475		29,852
Quoted Prices in Active Markets for Identical Assets (Level 1)	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	0		0
Other real estate owned	0		0
Significant Other Observable Inputs (Level 2)	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	0		0
Other real estate owned	0		0
Significant Unobservable Inputs (Level 3)	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	14,976		33,199
Other real estate owned	20,475	[1]	29,852	[1]
Commercial	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	1,545		7,229
Commercial | Quoted Prices in Active Markets for Identical Assets (Level 1)	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	0		0
Commercial | Significant Other Observable Inputs (Level 2)	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	0		0
Commercial | Significant Unobservable Inputs (Level 3)	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	1,545	[1]	7,229	[1]
Commercial real estate	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	7,058		7,749
Commercial real estate | Quoted Prices in Active Markets for Identical Assets (Level 1)	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	0		0
Commercial real estate | Significant Other Observable Inputs (Level 2)	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	0		0
Commercial real estate | Significant Unobservable Inputs (Level 3)	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	7,058	[1]	7,749	[1]
Agricultural and agricultural real estate	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	827		13,062
Agricultural and agricultural real estate | Quoted Prices in Active Markets for Identical Assets (Level 1)	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	0		0
Agricultural and agricultural real estate | Significant Other Observable Inputs (Level 2)	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	0		0
Agricultural and agricultural real estate | Significant Unobservable Inputs (Level 3)	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	827	[1]	13,062	[1]
Residential real estate	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	2,503		3,396
Residential real estate | Quoted Prices in Active Markets for Identical Assets (Level 1)	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	0		0
Residential real estate | Significant Other Observable Inputs (Level 2)	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	0		0
Residential real estate | Significant Unobservable Inputs (Level 3)	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	2,503	[1]	3,396	[1]
Consumer	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	3,043		1,763
Consumer | Quoted Prices in Active Markets for Identical Assets (Level 1)	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	0		0
Consumer | Significant Other Observable Inputs (Level 2)	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	0		0
Consumer | Significant Unobservable Inputs (Level 3)	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	3,043	[1]	1,763	[1]
Year-to- Date Losses	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	2,019		2,800
Other real estate owned	1,365		2,799
Year-to- Date Losses | Commercial	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	112		919
Year-to- Date Losses | Commercial real estate	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	470		1,881
Year-to- Date Losses | Agricultural and agricultural real estate	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	1,428		0
Year-to- Date Losses | Residential real estate	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	0		0
Year-to- Date Losses | Consumer	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Collateral dependent impaired loans	$9		$0
[1]	Third party appraisals are obtained as to the value of the underlying asset, but disclosure of this information would not provide meaningful information, as the range will vary widely from loan to loan. Types of discounts considered included age of the appraisal, local market conditions, current condition of the property, and estimated sales costs. These discounts will also vary from loan to loan, thus providing range would not be meaningful.

Fair_Value_Quantitative_Inform

Fair Value (Quantitative Information about Level 3 fair value measurements) (Details) (USD $)	9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Securities available for sale	$1,369,703		$1,633,902
Recurring Basis | Interest rate lock commitments	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Derivative assets	3,291		1,809
Nonrecurring Basis	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Collateral dependent impaired loans	14,976		33,199
Other real estate owned	20,475		29,852
Nonrecurring Basis | Commercial	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Collateral dependent impaired loans	1,545		7,229
Nonrecurring Basis | Commercial real estate	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Collateral dependent impaired loans	7,058		7,749
Nonrecurring Basis | Agricultural and agricultural real estate	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Collateral dependent impaired loans	827		13,062
Nonrecurring Basis | Residential real estate	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Collateral dependent impaired loans	2,503		3,396
Nonrecurring Basis | Consumer	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Collateral dependent impaired loans	3,043		1,763
Level 3	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Securities available for sale	4,848		3,298
Derivative assets	0		0
Level 3 | Interest rate lock commitments	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Derivative assets	3,291		1,809
Level 3 | Recurring Basis | Interest rate lock commitments	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Derivative assets	3,291	[1]	1,809
Closing ratio	84.00%		87.00%
Level 3 | Recurring Basis | Z-Tranche Securities	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Securities available for sale	4,848		3,298
Level 3 | Recurring Basis | Z-Tranche Securities | Minimum	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Pretax discount rate	6.50%		7.00%
Actual defaults	12.71%		12.50%
Actual deferrals	6.25%		6.10%
Level 3 | Recurring Basis | Z-Tranche Securities | Maximum	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Pretax discount rate	8.00%		9.00%
Actual defaults	20.14%		28.20%
Actual deferrals	22.35%		16.00%
Level 3 | Recurring Basis | Z-Tranche Securities | Weighted Average	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Actual defaults	15.52%		20.80%
Actual deferrals	11.32%		11.10%
Level 3 | Recurring Basis | Z-Tranche Securities | Interest rate lock commitments	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Derivative assets	'		1,809	[2]
Level 3 | Nonrecurring Basis	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Collateral dependent impaired loans	14,976		33,199
Other real estate owned	20,475	[3]	29,852	[3]
Level 3 | Nonrecurring Basis | Commercial	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Collateral dependent impaired loans	1,545	[3]	7,229	[3]
Level 3 | Nonrecurring Basis | Commercial real estate	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Collateral dependent impaired loans	7,058	[3]	7,749	[3]
Level 3 | Nonrecurring Basis | Agricultural and agricultural real estate	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Collateral dependent impaired loans	827	[3]	13,062	[3]
Level 3 | Nonrecurring Basis | Residential real estate	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Collateral dependent impaired loans	2,503	[3]	3,396	[3]
Level 3 | Nonrecurring Basis | Consumer	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Collateral dependent impaired loans	$3,043	[3]	$1,763	[3]
[1]	The significant unobservable input used in the fair value measurement is the closing ratio, which represents the percentage of loans currently in a lock position which management estimates will ultimately close. The closing ratio calculation takes into consideration historical data and loan-level data; therefore providing a range would not be meaningful. The weighted average closing ratio at September 30, 2014 was 84%.
[2]	The significant unobservable input used in the fair value measurement is the closing ratio, which represents the percentage of loans currently in a lock position which management estimates will ultimately close. The closing ratio calculation takes into consideration historical data and loan-level data; therefore providing a range would not be meaningful. The weighted average closing ratio at December 31, 2013 was 87%.
[3]	Third party appraisals are obtained as to the value of the underlying asset, but disclosure of this information would not provide meaningful information, as the range will vary widely from loan to loan. Types of discounts considered included age of the appraisal, local market conditions, current condition of the property, and estimated sales costs. These discounts will also vary from loan to loan, thus providing range would not be meaningful.

Fair_Value_Changes_Level_3_ass

Fair Value (Changes Level 3 assets (fair value, recurring)) (Details) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Interest rate lock commitments	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]	'	'
Balance at January 1	$1,809,000	$9,353,000
Total gains (losses):	'	'
Included in earnings	3,393,000	-10,518,000
Purchases, issuances, sales and settlements:	'	'
Issuances	1,798,000	9,821,000
Settlements	-3,709,000	-6,847,000
Balance at period end	3,291,000	1,809,000
Gain (loss) on sale of loans held-for-sale	3,300,000	1,800,000
Z-Tranche Securities	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]	'	'
Balance at January 1	3,298,000	4,089,000
Total gains (losses):	'	'
Included in earnings	0	-1,587,000
Included in other comprehensive income	1,669,000	826,000
Purchases, issuances, sales and settlements:	'	'
Purchases	0	0
Sales	-119,000	-30,000
Settlements	0	0
Balance at period end	$4,848,000	$3,298,000

Fair_Value_Estimated_fair_valu

Fair Value (Estimated fair value financial instruments (incl. carrying amounts)) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financial assets:	'	'
Trading securities	$0	$1,801
Securities available for sale	1,369,703	1,633,902
Held to maturity securities	266,641	237,437
Quoted Prices in Active Markets for Identical Assets (Level 1)	'	'
Financial assets:	'	'
Cash and cash equivalents	67,836	125,270
Time deposits in other financial institutions	2,605	'
Trading securities	0	1,801
Securities available for sale	2,536	4,084
Held to maturity securities	0	0
Other investments	0	0
Loans held for sale	0	0
Loans, net	0	0
Derivative assets	0	0
Financial liabilities:	'	'
Short term borrowings	0	0
Other borrowings	0	0
Derivative liabilities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Demand Deposits	'	'
Financial liabilities:	'	'
Deposits	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Savings Deposits	'	'
Financial liabilities:	'	'
Deposits	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Time Deposits	'	'
Financial liabilities:	'	'
Deposits	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest rate lock commitments	'	'
Financial assets:	'	'
Derivative assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Forward commitments	'	'
Financial assets:	'	'
Derivative assets	0	0
Financial liabilities:	'	'
Derivative liabilities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial	'	'
Financial assets:	'	'
Loans, net	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial real estate	'	'
Financial assets:	'	'
Loans, net	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Agricultural and agricultural real estate	'	'
Financial assets:	'	'
Loans, net	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Residential real estate	'	'
Financial assets:	'	'
Loans, net	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Consumer	'	'
Financial assets:	'	'
Loans, net	0	0
Significant Other Observable Inputs (Level 2)	'	'
Financial assets:	'	'
Cash and cash equivalents	0	0
Time deposits in other financial institutions	0	'
Trading securities	0	0
Securities available for sale	1,362,319	1,626,520
Held to maturity securities	266,641	237,437
Other investments	20,279	21,608
Loans held for sale	93,054	46,665
Loans, net	3,702,033	3,396,662
Derivative assets	96	0
Financial liabilities:	'	'
Short term borrowings	348,305	408,756
Other borrowings	339,338	355,923
Derivative liabilities	3,111	3,697
Significant Other Observable Inputs (Level 2) | Demand Deposits	'	'
Financial liabilities:	'	'
Deposits	1,274,439	1,238,581
Significant Other Observable Inputs (Level 2) | Savings Deposits	'	'
Financial liabilities:	'	'
Deposits	2,599,850	2,535,242
Significant Other Observable Inputs (Level 2) | Time Deposits	'	'
Financial liabilities:	'	'
Deposits	852,430	892,676
Significant Other Observable Inputs (Level 2) | Interest rate lock commitments	'	'
Financial assets:	'	'
Derivative assets	0	0
Significant Other Observable Inputs (Level 2) | Forward commitments	'	'
Financial assets:	'	'
Derivative assets	222	1,206
Financial liabilities:	'	'
Derivative liabilities	623	133
Significant Other Observable Inputs (Level 2) | Commercial	'	'
Financial assets:	'	'
Loans, net	1,002,936	923,272
Significant Other Observable Inputs (Level 2) | Commercial real estate	'	'
Financial assets:	'	'
Loans, net	1,674,984	1,505,024
Significant Other Observable Inputs (Level 2) | Agricultural and agricultural real estate	'	'
Financial assets:	'	'
Loans, net	387,344	365,024
Significant Other Observable Inputs (Level 2) | Residential real estate	'	'
Financial assets:	'	'
Loans, net	327,413	331,966
Significant Other Observable Inputs (Level 2) | Consumer	'	'
Financial assets:	'	'
Loans, net	309,356	271,376
Significant Unobservable Inputs (Level 3)	'	'
Financial assets:	'	'
Cash and cash equivalents	0	0
Time deposits in other financial institutions	0	'
Trading securities	0	0
Securities available for sale	4,848	3,298
Held to maturity securities	0	0
Other investments	235	235
Loans held for sale	0	0
Loans, net	14,976	33,199
Derivative assets	0	0
Financial liabilities:	'	'
Short term borrowings	0	0
Other borrowings	0	0
Derivative liabilities	0	0
Significant Unobservable Inputs (Level 3) | Demand Deposits	'	'
Financial liabilities:	'	'
Deposits	0	0
Significant Unobservable Inputs (Level 3) | Savings Deposits	'	'
Financial liabilities:	'	'
Deposits	0	0
Significant Unobservable Inputs (Level 3) | Time Deposits	'	'
Financial liabilities:	'	'
Deposits	0	0
Significant Unobservable Inputs (Level 3) | Interest rate lock commitments	'	'
Financial assets:	'	'
Derivative assets	3,291	1,809
Significant Unobservable Inputs (Level 3) | Forward commitments	'	'
Financial assets:	'	'
Derivative assets	0	0
Financial liabilities:	'	'
Derivative liabilities	0	0
Significant Unobservable Inputs (Level 3) | Commercial	'	'
Financial assets:	'	'
Loans, net	1,545	7,229
Significant Unobservable Inputs (Level 3) | Commercial real estate	'	'
Financial assets:	'	'
Loans, net	7,058	7,749
Significant Unobservable Inputs (Level 3) | Agricultural and agricultural real estate	'	'
Financial assets:	'	'
Loans, net	827	13,062
Significant Unobservable Inputs (Level 3) | Residential real estate	'	'
Financial assets:	'	'
Loans, net	2,503	3,396
Significant Unobservable Inputs (Level 3) | Consumer	'	'
Financial assets:	'	'
Loans, net	3,043	1,763
Carrying Amount	'	'
Financial assets:	'	'
Cash and cash equivalents	67,836	125,270
Time deposits in other financial institutions	2,605	'
Trading securities	0	1,801
Securities available for sale	1,369,703	1,633,902
Held to maturity securities	255,312	237,498
Other investments	20,514	21,843
Loans held for sale	93,054	46,665
Loans, net	3,760,456	3,461,016
Derivative assets	96	0
Financial liabilities:	'	'
Short term borrowings	348,305	408,756
Other borrowings	334,513	350,109
Derivative liabilities	3,111	3,697
Carrying Amount | Demand Deposits	'	'
Financial liabilities:	'	'
Deposits	1,274,439	1,238,581
Carrying Amount | Savings Deposits	'	'
Financial liabilities:	'	'
Deposits	2,599,850	2,535,242
Carrying Amount | Time Deposits	'	'
Financial liabilities:	'	'
Deposits	852,430	892,676
Carrying Amount | Interest rate lock commitments	'	'
Financial assets:	'	'
Derivative assets	3,291	1,809
Carrying Amount | Forward commitments	'	'
Financial assets:	'	'
Derivative assets	222	1,206
Financial liabilities:	'	'
Derivative liabilities	623	133
Carrying Amount | Commercial	'	'
Financial assets:	'	'
Loans, net	1,012,918	936,305
Carrying Amount | Commercial real estate	'	'
Financial assets:	'	'
Loans, net	1,668,969	1,516,352
Carrying Amount | Agricultural and agricultural real estate	'	'
Financial assets:	'	'
Loans, net	401,785	374,203
Carrying Amount | Residential real estate	'	'
Financial assets:	'	'
Loans, net	357,658	347,266
Carrying Amount | Consumer	'	'
Financial assets:	'	'
Loans, net	319,126	286,890
Estimated Fair Value	'	'
Financial assets:	'	'
Cash and cash equivalents	67,836	125,270
Time deposits in other financial institutions	2,605	'
Trading securities	0	1,801
Securities available for sale	1,369,703	1,633,902
Held to maturity securities	266,641	237,437
Other investments	20,514	21,843
Loans held for sale	93,054	46,665
Loans, net	3,717,009	3,429,861
Derivative assets	96	0
Financial liabilities:	'	'
Short term borrowings	348,305	408,756
Other borrowings	339,338	355,923
Derivative liabilities	3,111	3,697
Estimated Fair Value | Demand Deposits	'	'
Financial liabilities:	'	'
Deposits	1,274,439	1,238,581
Estimated Fair Value | Savings Deposits	'	'
Financial liabilities:	'	'
Deposits	2,599,850	2,535,242
Estimated Fair Value | Time Deposits	'	'
Financial liabilities:	'	'
Deposits	852,430	892,676
Estimated Fair Value | Interest rate lock commitments	'	'
Financial assets:	'	'
Derivative assets	3,291	1,809
Estimated Fair Value | Forward commitments	'	'
Financial assets:	'	'
Derivative assets	222	1,206
Financial liabilities:	'	'
Derivative liabilities	623	133
Estimated Fair Value | Commercial	'	'
Financial assets:	'	'
Loans, net	1,004,481	930,501
Estimated Fair Value | Commercial real estate	'	'
Financial assets:	'	'
Loans, net	1,682,042	1,512,773
Estimated Fair Value | Agricultural and agricultural real estate	'	'
Financial assets:	'	'
Loans, net	388,171	378,086
Estimated Fair Value | Residential real estate	'	'
Financial assets:	'	'
Loans, net	329,916	335,362
Estimated Fair Value | Consumer	'	'
Financial assets:	'	'
Loans, net	$312,399	$273,139

Segment_Reporting_Details

Segment Reporting (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]	'	'	'	'	'
Net interest income	$51,491	$39,880	$150,902	$117,471	'
Provision for loan and lease losses	2,553	5,149	11,635	7,648	'
Total noninterest income	20,162	20,379	59,626	69,604	'
Total noninterest expense	54,211	46,808	160,487	140,220	'
INCOME BEFORE INCOME TAXES	14,889	8,302	38,406	39,207	'
Segment Assets	5,934,809	4,912,730	5,934,809	4,912,730	5,923,716
Average Loans	3,812,218	2,937,508	3,692,718	2,906,970	'
Community and Other Banking	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Net interest income	50,790	39,292	148,930	115,968	'
Provision for loan and lease losses	2,553	5,149	11,635	7,648	'
Total noninterest income	11,124	11,971	33,720	35,190	'
Total noninterest expense	42,784	35,511	127,743	104,199	'
INCOME BEFORE INCOME TAXES	16,577	10,603	43,272	39,311	'
Segment Assets	5,817,427	4,825,781	5,817,427	4,825,781	'
Average Loans	3,736,917	2,867,933	3,629,822	2,820,418	'
Retail Mortgage Banking	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Net interest income	701	588	1,972	1,503	'
Provision for loan and lease losses	0	0	0	0	'
Total noninterest income	9,038	8,408	25,906	34,414	'
Total noninterest expense	11,427	11,297	32,744	36,021	'
INCOME BEFORE INCOME TAXES	-1,688	-2,301	-4,866	-104	'
Segment Assets	117,382	86,949	117,382	86,949	'
Average Loans	$75,301	$69,575	$62,896	$86,552	'