Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
INTEREST INCOME:
Interest and fees on loans and leases	$ 46,384	$ 39,827
Interest on securities:
Taxable	7,761	4,659
Nontaxable	3,122	3,198
Interest on interest bearing deposits in other financial institutions	7	4
TOTAL INTEREST INCOME	57,274	47,688
INTEREST EXPENSE:
Interest on deposits	4,778	5,076
Interest on short-term borrowings	226	148
Interest on other borrowings (includes $521 and $505 of interest expense related to derivatives reclassified from accumulated other comprehensive loss for the three months ended March 31, 2014 and 2013, respectively)	3,658	3,797
TOTAL INTEREST EXPENSE	8,662	9,021
NET INTEREST INCOME	48,612	38,667
Provision for loan and lease losses	6,331	637
NET INTEREST INCOME AFTER PROVISION FOR LOAN AND LEASE LOSSES	42,281	38,030
NONINTEREST INCOME:
Service charges and fees	4,896	4,008
Loan servicing income	1,511	126
Trust fees	3,210	2,904
Brokerage and insurance commissions	1,123	951
Securities gains, net (includes $781 and $3,427 of net security gains reclassified from accumulated other comprehensive loss for the three months ended March 31, 2014 and 2013, respectively)	781	3,427
Gain (loss) on trading account securities	(38)	314
Gains on sale of loans held for sale	6,379	13,157
Loss on sales/valuations of other real estate and repossessed assets, net	(123)	(502)
Valuation adjustment on mortgage servicing rights	0	496
Income on bank owned life insurance	363	405
Other noninterest income	625	680
TOTAL NONINTEREST INCOME	18,727	25,966
NONINTEREST EXPENSES:
Salaries and employee benefits	32,319	29,740
Occupancy	4,050	3,185
Furniture and equipment	1,890	2,051
Professional fees	4,526	3,543
FDIC insurance assessments	980	902
Advertising	1,188	1,228
Intangible assets amortization	624	200
Other real estate and loan collection expenses	1,052	838
Other noninterest expenses	5,786	4,558
TOTAL NONINTEREST EXPENSES	52,415	46,245
INCOME BEFORE INCOME TAXES	8,593	17,751
Income taxes (includes $97 and $1,099 of income tax expense reclassified from accumulated other comprehensive loss for the three months ended March 31, 2014 and 2013, respectively)	1,703	5,199
NET INCOME	6,890	12,552
Net income available to noncontrolling interest, net of tax	0	(64)
NET INCOME ATTRIBUTABLE TO HEARTLAND	6,890	12,488
Preferred dividends and discount	(204)	(408)
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 6,686	$ 12,080
EARNINGS PER COMMON SHARE - BASIC (in dollars per share)	$ 0.36	$ 0.72
EARNINGS PER COMMON SHARE - DILUTED (in dollars per share)	$ 0.36	$ 0.70
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.10	$ 0.10