Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net income	$ 9,096,778	$ 7,559,436	$ 4,991,744
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for loan and lease losses	2,828,633	1,650,675	3,868,855
Accretion of discounts on acquired loans and deferred fees	(1,710,051)	(2,236,662)	(1,940,116)
Depreciation and amortization	422,478	505,520	625,040
Net amortization of premiums on investment securities	1,526,957	1,466,948	1,232,627
Securities gains, net	(120,873)	(55,023)	(13,457)
Mortgage banking income	(7,375,064)	(5,961,766)	(4,067,013)
Net (gain) loss on disposal of premises and equipment		(28,381)	836
Net (gain) loss on sale of other real estate owned	(157,184)	3,506	178,214
Stock-based compensation	842,451	438,004	261,035
Excess tax benefit from stock compensation	(61,217)	(8,286)	(12,349)
Deferred income tax (benefit) expense	(293,739)	506,672	461,694
Origination of loans held for sale	(522,036,970)	(422,323,041)	(253,099,211)
Proceeds from loans held for sale	523,030,806	407,941,300	245,891,363
Net (increase) decrease in accrued interest receivable and other assets	(1,538,577)	101,973	(879,093)
Net increase (decrease) in accrued interest payable and other liabilities	1,812,670	1,091,096	(4,483,619)
Net cash provided by (used in) operating activities	6,267,098	(9,348,029)	(6,983,450)
Activities in securities available for sale:
Purchases	(81,946,658)	(57,704,023)	(163,194,507)
Sales	46,700,357	90,445,352	161,603,143
Maturities, prepayments and calls	23,644,239	28,151,835	25,777,185
Activities in securities held to maturity:
Purchases	(5,336,200)		(2,512,122)
Maturities, prepayments and calls	1,655,537	833,198	704,041
Purchase of restricted equity securities	(618,200)	(348,550)	(170,100)
Net increase in loans	(126,471,419)	(95,883,666)	(85,892,972)
Purchase of premises and equipment	(813,401)	(30,778)	(302,609)
Proceeds from the sale of premises and equipment		233,387
Proceeds from sale of other real estate	373,438	354,840	790,161
Purchase of bank owned life insurance			(5,000,000)
Cash paid in acquisition of Farmington Financial Group, LLC			(3,000,000)
Net cash used in investing activities	(142,812,307)	(33,948,405)	(71,197,780)
Cash flows from financing activities:
Net increase in deposits	90,261,943	57,403,652	101,891,830
Proceeds from Federal Home Loan Bank advances	55,000,000	25,000,000
Payments on Federal Home Loan Bank advances	(45,000,000)
Issuance of common stock	(21,562,716)
Exercise of common stock options and warrants, net of repurchase of restricted shares	294,298	10,000	75,000
Excess tax benefit from stock compensation	61,217	8,286	12,349
Termination of interest rate swap agreement	(1,954,000)	(1,793,000)
Net decrease in repurchase agreements	(3,755,000)	(11,082,000)	5,343,000
Net cash provided by financing activities	116,471,174	69,546,938	107,322,179
Net increase (decrease) in cash and cash equivalents	(20,074,035)	26,250,504	29,140,949
Cash and cash equivalents at beginning of period	100,184,841	73,934,337	44,793,388
Cash and cash equivalents at end of period	80,110,806	100,184,841	73,934,337
Supplemental disclosures of cash paid:
Interest paid	6,896,499	5,768,230	5,926,316
Income taxes	4,113,908	2,081,723	1,768,256
Supplemental disclosures of noncash transactions:
Loans charged off to the allowance for loan and lease losses	1,451,570	3,205,671	1,147,442
Transfer of loans to other real estate	$ 0	$ 0	91,975
Common stock issued in acquisition of Farmington Financial Group, LLC			$ 1,148,000