CONSOLIDATED STATEMENT OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Loans:
Taxable	$ 105,531	$ 100,814	$ 55,514
Tax exempt	1,155	1,175	782
Investment securities:
Taxable	9,981	11,502	12,063
Tax exempt	3,634	3,916	4,604
Federal funds sold and cash investments	948	389	178
Total interest income	121,249	117,796	73,141
Interest expense:
Deposits	8,936	7,511	5,198
Short-term borrowings	303	237	179
FHLB advances and other borrowings	1,057	741	1,682
Subordinated debt	3,858	2,731	728
Trust preferred debentures	1,841	1,669	756
Total interest expense	15,995	12,889	8,543
Net interest income	105,254	104,907	64,598
Provision for loan losses	5,591	11,127	92
Net interest income after provision for loan losses	99,663	93,780	64,506
Noninterest income:
Commercial FHA revenue	22,064	20,175
Residential mortgage banking revenue	13,389	17,634	3,000
Wealth management revenue	8,091	7,292	7,098
Merchant services revenue	1,697	1,529	1,083
Service charges on deposit accounts	3,904	3,969	3,036
Interchange revenue	3,750	3,562	2,613
FDIC loss-sharing expense	(1,661)	(566)	(3,491)
Gain on sales of investment securities, net	14,702	193	77
Other-than-temporary impairment on investment securities	(824)	(461)	(190)
Gain on sales of other real estate owned	113	600	761
Gain on sales of other assets			3,224
Other income	6,832	5,555	3,230
Total noninterest income	72,057	59,482	20,441
Noninterest expense:
Salaries and employee benefits	66,293	63,313	32,503
Occupancy and equipment	13,080	13,151	7,587
Data processing	10,658	10,197	6,402
FDIC insurance	1,707	2,051	1,328
Professional	8,049	8,687	5,677
Marketing	2,733	2,891	2,530
Communications	2,150	2,354	1,541
Loan expense	1,957	2,960	1,204
Other real estate owned	935	945	2,189
Amortization of intangible assets	2,147	2,460	2,115
FHLB advances prepayment fee			1,746
Other expense	11,589	8,755	4,658
Total noninterest expense	121,298	117,764	69,480
Income before income taxes	50,422	35,498	15,467
Income taxes	18,889	11,091	4,651
Net income	31,533	24,407	10,816
Less: net (loss) income attributable to noncontrolling interest in subsidiaries	(9)	83
Net income attributable to Midland States Bancorp, Inc.	31,542	24,324	10,816
Preferred stock dividends			7,601
Net income available to common shareholders	$ 31,542	$ 24,324	$ 3,215
Per common share data:
Basic earnings per common share	$ 2.22	$ 2.03	$ 0.53
Diluted earnings per common share	$ 2.17	$ 2.00	$ 0.53
Weighted average common shares outstanding	14,130,552	11,902,455	5,945,615
Weighted average diluted common shares outstanding	14,428,839	12,112,403	6,025,454