Note 17 - Other Noninterest Income and Expense - Summary of Noninterest Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Total other noninterest expenses	$ 5,634	$ 4,815
Customer Bank Card Processing [Member]
Total other noninterest expenses	697	673
Subscriptions [Member]
Total other noninterest expenses	607	513
Telephone and Data Communications [Member]
Total other noninterest expenses	567	414
Pennsylvania Shares and Use Taxes [Member]
Total other noninterest expenses	482	316
Correspondent Bank and Courier Fees [Member]
Total other noninterest expenses	411	395
Travel Entertainment and Conferences [Member]
Total other noninterest expenses	390	337
Internet Banking and Bill Pay [Member]
Total other noninterest expenses	347	416
Item Processing [Member]
Total other noninterest expenses	310
Printing and Supplies [Member]
Total other noninterest expenses	278	333
Marketing and Advising [Member]
Total other noninterest expenses	264	292
Charitable Contributions [Member]
Total other noninterest expenses	240	220
Regulatory Examinations [Member]
Total other noninterest expenses	204	207
Bad Checks and Other losses [Member]
Total other noninterest expenses	199	197
Postage and Freight [Member]
Total other noninterest expenses	169	134
Credit Bureau and Other Loan Expense [Member]
Total other noninterest expenses	132	120
Memberships and Dues [Member]
Total other noninterest expenses	112	98
Other Expenses [Member]
Total other noninterest expenses	$ 225	$ 150