Note 6 - Goodwill and Intangibles (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Changes in carrying amount of goodwill

	2019		2018		2017
	(dollars in thousands)
Balance at the beginning of period	$	77,832	$	28,334	$	13,111
Goodwill from merger with Springfield Bancshares		—		45,975		—
Goodwill from acquisition of Bates Companies		—		3,766		—
Goodwill from acquisition of Guaranty Bank		—		—		15,223
Goodwill from acquisition of Guaranty Bank - measurement period adjustment		—		(243)		—
Goodwill from acquisition of Bates Companies - measurement period adjustment		(84)		—		—
Goodwill impairment - Bates Companies		(3,000)		—		—
Balance at the end of period	$	74,748	$	77,832	$	28,334

Schedule of goodwill by reportable segment

	December 31, 2019		December 31, 2018		December 31, 2017
	(dollars in thousands)
Commercial banking:
QCBT	$	3,223	$	3,223	$	3,223
CRBT		14,980		14,980		15,223
CSB		9,888		9,888		9,888
SFC Bank		45,975		45,975		—
Other, Parent Company Only		682		3,766		—
	$	74,748	$	77,832	$	28,334

Schedule of core deposit intangibles by reportable segment

	December 31, 2019		December 31, 2018		December 31, 2017
	(dollars in thousands)
Commercial Banking:
CRBT	$	2,684	$	3,186	$	3,694
CSB		3,980		4,675		5,385
SFC Bank		6,802		7,734		—
	$	13,466	$	15,595	$	9,079

Core Deposits [Member]

Notes Tables

Changes in Intangibles

	2019		2018		2017
	(dollars in thousands)
Balance at the beginning of the period	$	15,595	$	9,079	$	7,381
Core deposit intangible from merger with Springfield Bancshares		—		8,208		—
Core deposit intangible from acquisition of Guaranty Bank		—		—		2,699
Amortization expense		(2,129)		(1,692)		(1,001)
Balance at the end of the period	$	13,466	$	15,595	$	9,079
Gross carrying amount	$	19,255	$	19,255	$	11,046
Accumulated amortization		(5,789)		(3,660)		(1,967)
Net book value	$	13,466	$	15,595	$	9,079

Estimated amortization of intangible assets

	Amount
Years ending December 31,	(dollars in thousands)
2020	$	2,085
2021		2,032
2022		1,971
2023		1,776
2024		1,623
Thereafter		3,979
	$	13,466

Customer Lists [Member]

Notes Tables

Changes in Intangibles

	2019		2018
	(dollars in thousands)
Balance at the beginning of period	$	1,855	$	—
Customer list intangible from acquisition of Bates Companies		—		1,855
Customer list intangible from acquisition of Bates Companies - measurement period adjustment		(214)		—
Amortization		(137)		—
Balance at the end of period		1,504		1,855

Estimated amortization of intangible assets

	Amount
Years ending December 31,	(dollars in thousands)
2020	$	109
2021		109
2022		109
2023		109
2024		109
Thereafter		959
	$	1,504