Note 2 - Acquisition of King Bancorp, Inc. and Its Wholly-owned Subsidiary King Southern Bank. - Summary of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands		May 01, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Liabilities assumed:
Goodwill, Ending Balance			$ 12,593	$ 12,826	$ 682	$ 682	$ 682	$ 682
King Bancorp Inc. [Member]
Assets aquired:
Available for sale securities		$ 12,427
Loans		164,029
Allowance for loan and lease losses		0
Loans, net		164,029
Federal Home Loan Bank stock, at cost		1,517
Federal Reserve Bank stock, at cost		490
Premises and equipment, net		3,381
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		1,519
Bank owned life insurance		3,431
Other real estate owned		0
Other assets and accrued interest receivable		831
Total assets acquired		192,702
Liabilities assumed:
Non-interest bearing		24,939
Interest bearing		100,587
Total deposits		125,526
Federal funds purchased		1,566
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Federal Home Loan Bank Advances		43,299
Other liabilities and accrued interest payable		313
Total liabilities assumed		176,613
Net assets acquired		16,089
Cash consideration paid		(28,000)
Goodwill, Ending Balance		11,911	$ 12,000
King Bancorp Inc. [Member] | Subordinated Debt [Member]
Liabilities assumed:
Long-term debt		3,609
King Bancorp Inc. [Member] | Line of Credit [Member]
Liabilities assumed:
Long-term debt		2,300
King Bancorp Inc. [Member] | As Recorded By Acquiree [Member]
Assets aquired:
Available for sale securities		12,404
Loans		165,744
Allowance for loan and lease losses		(1,812)
Loans, net		163,932
Federal Home Loan Bank stock, at cost		1,517
Federal Reserve Bank stock, at cost		490
Premises and equipment, net		4,358
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		0
Bank owned life insurance		3,431
Other real estate owned		325
Other assets and accrued interest receivable		867
Total assets acquired		192,401
Liabilities assumed:
Non-interest bearing		24,939
Interest bearing		100,839
Total deposits		125,778
Federal funds purchased		1,566
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Federal Home Loan Bank Advances		43,718
Other liabilities and accrued interest payable		313
Total liabilities assumed		177,284
Net assets acquired		15,117
King Bancorp Inc. [Member] | As Recorded By Acquiree [Member] | Subordinated Debt [Member]
Liabilities assumed:
Long-term debt		3,609
King Bancorp Inc. [Member] | As Recorded By Acquiree [Member] | Line of Credit [Member]
Liabilities assumed:
Long-term debt		2,300
King Bancorp Inc. [Member] | As Adjusted By Acuirer [Member]
Assets aquired:
Available for sale securities	[1],[2]	23
Loans	[1],[3]	(1,597)
Allowance for loan and lease losses	[1],[3]	1,812
Loans, net	[1]	215
Federal Home Loan Bank stock, at cost	[1]	0
Federal Reserve Bank stock, at cost	[1]	0
Premises and equipment, net	[1],[4]	(1,328)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	[1],[5]	1,519
Bank owned life insurance	[1]	0
Other real estate owned	[1],[6]	(325)
Other assets and accrued interest receivable	[1],[7]	(36)
Total assets acquired	[1]	68
Liabilities assumed:
Non-interest bearing	[1]	0
Interest bearing	[1],[8]	(252)
Total deposits		(252)
Federal funds purchased	[1]	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Federal Home Loan Bank Advances	[1],[9]	(419)
Other liabilities and accrued interest payable	[1]	0
Total liabilities assumed	[1]	(671)
Net assets acquired	[1]	739
King Bancorp Inc. [Member] | As Adjusted By Acuirer [Member] | Subordinated Debt [Member]
Liabilities assumed:
Long-term debt	[1]	0
King Bancorp Inc. [Member] | As Adjusted By Acuirer [Member] | Line of Credit [Member]
Liabilities assumed:
Long-term debt	[1]	0
King Bancorp Inc. [Member] | Recast Adjustment [Member]
Assets aquired:
Available for sale securities		0
Loans	[3]	(118)
Allowance for loan and lease losses		0
Loans, net		(118)
Federal Home Loan Bank stock, at cost		0
Federal Reserve Bank stock, at cost		0
Premises and equipment, net	[4]	351
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		0
Bank owned life insurance		0
Other real estate owned		0
Other assets and accrued interest receivable		0
Total assets acquired		233
Liabilities assumed:
Non-interest bearing		0
Interest bearing		0
Total deposits		0
Federal funds purchased		0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Federal Home Loan Bank Advances		0
Other liabilities and accrued interest payable		0
Total liabilities assumed		0
Net assets acquired		233
King Bancorp Inc. [Member] | Recast Adjustment [Member] | Subordinated Debt [Member]
Liabilities assumed:
Long-term debt		0
King Bancorp Inc. [Member] | Recast Adjustment [Member] | Line of Credit [Member]
Liabilities assumed:
Long-term debt		0
King Bancorp Inc. [Member] | Cash [Member]
Assets aquired:
Cash and equivalents		3,316
King Bancorp Inc. [Member] | Cash [Member] | As Recorded By Acquiree [Member]
Assets aquired:
Cash and equivalents		3,316
King Bancorp Inc. [Member] | Cash [Member] | As Adjusted By Acuirer [Member]
Assets aquired:
Cash and equivalents	[1]	0
King Bancorp Inc. [Member] | Cash [Member] | Recast Adjustment [Member]
Assets aquired:
Cash and equivalents		0
King Bancorp Inc. [Member] | Interest-bearing Deposits [Member]
Assets aquired:
Cash and equivalents		1,761
King Bancorp Inc. [Member] | Interest-bearing Deposits [Member] | As Recorded By Acquiree [Member]
Assets aquired:
Cash and equivalents		1,761
King Bancorp Inc. [Member] | Interest-bearing Deposits [Member] | As Adjusted By Acuirer [Member]
Assets aquired:
Cash and equivalents	[1]	0
King Bancorp Inc. [Member] | Interest-bearing Deposits [Member] | Recast Adjustment [Member]
Assets aquired:
Cash and equivalents		$ 0

[1] Bancorp's acquisition of KSB closed on May 1, 2019. The fair value adjustments reported are preliminary estimates based on information obtained subsequent to May 1, 2019 and through September 30, 2019. Management is continuing to evaluate each of its estimates and may provide additional recast adjustments in future periods based on this continuing evaluation. To the extent that additional recast adjustments are posted in future periods, the resultant fair values and the amount of goodwill recorded by Bancorp will change.

[2] Reflects the fair value adjustment based on Bancorp's evaluation of the acquired investment portfolio.

[3] Reflects the fair value adjustment based on Bancorp's evaluation of the acquired loan portfolio and to eliminate KSB's recorded allowance.

[4] Reflects the fair value adjustment based on Bancorp's evaluation of the premises and equipment acquired.

[5] Reflects the fair value adjustment for the core deposit intangible asset recorded as a result of the acquisition.

[6] Reflects the fair value adjustment based upon Bancorp's evaluation of the foreclosed real estate acquired.

[7] Reflects the write-off of a miscellaneous other asset.

[8] Reflects the fair value adjustment based on the Company's evaluation of the assumed time deposits.

[9] Reflects the fair value adjustment based upon Bancorp's evaluation of the assumed FHLB advances.