Note 6 - Goodwill and Intangibles

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Goodwill and Intangible Assets Disclosure [Text Block]

Note 6. Goodwill and Intangibles

The following table presents the changes in the carrying amount of goodwill for the years ended December 31, 2018, 2017 and 2016:

	2018		2017		2016
Balance at the beginning of period	$	28,334,092	$	13,110,913	$	3,222,688
Goodwill from merger with Springfield Bancshares		45,974,931		—		—
Goodwill from acquisition of the Bates Companies		3,766,074		—		—
Goodwill from acquisition of Guaranty Bank		—		15,223,179		—
Goodwill from acquisition of Guaranty Bank - measurement period adjustment		(243,195)		—		—
Goodwill from acquisition of CSB		—		—		9,888,225
Balance at the end of period	$	77,831,902	$	28,334,092	$	13,110,913

Note 6. Goodwill and Intangibles (continued)

The following table presents the changes in core deposit intangibles (included in Intangibles on the consolidated balance sheets) during the years ended December 31, 2018 ,2017 and 2016:

	2018		2017		2016
Balance at the beginning of the period	$	9,078,953	$	7,381,213	$	1,471,409
Core deposit intangible from merger with Springfield Bancshares		8,208,728		—		—
Core deposit intangible from acquisition of Guaranty Bank		—		2,698,301		—
Core deposit intangible from acquisition of CSB		—		—		6,352,653
Amortization expense		(1,692,431)		(1,000,561)		(442,849)
Balance at the end of the period	$	15,595,250	$	9,078,953	$	7,381,213
Gross carrying amount	$	19,254,809	$	11,046,081	$	8,347,780
Accumulated amortization		(3,659,559)		(1,967,128)		(966,567)
Net book value	$	15,595,250	$	9,078,953	$	7,381,213

The following table presents the estimated amortization of the core deposit intangibles:

Years ending December 31,	Amount
2019	$	2,129,141
2020		2,084,985
2021		2,032,204
2022		1,970,792
2023		1,776,065
Thereafter		5,602,063
	$	15,595,250

The following table presents the changes in customer list intangible (included in Intangibles on the consolidated balance sheets) during the year ended December 31, 2018:

	2018
Balance at the beginning of period	$	—
Customer list intangible from acquisition of Bates Companies		1,854,932
Balance at the end of period		1,854,932

The following table presents the estimated amortization of the customer list intangible:

Years ending December 31,	Amount
2019	$	123,662
2020		123,662
2021		123,662
2022		123,662
2023		123,662
Thereafter		1,236,622
	$	1,854,932