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Note 7 - Supplemental Disclosures of Cash Flow Information - Supplemental Disclosures of Cash Flow Information (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Cash payments for:    
Interest $ 351 $ 370
Taxes (net of refunds received) 0 0
Noncash investing activities:    
Transfers from loans to real estate acquired through foreclosure $ 27 $ 194