Note 7 - Servicing - Summary of Mortgage Servicing Rights Activity (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Balance at beginning of year	$ 1,313	$ 1,270	$ 1,247
Capitalized servicing rights – new loan sales	192	164	183
Disposals (amortization based on loan payments and payoffs)	(186)	(147)	(129)
Change in fair value	(258)	26	(31)
Balance at end of year	$ 1,061	$ 1,313	$ 1,270

The value of new servicing assets, subsequently measured at fair value, acquired or created during the current period through purchases or from transfers of financial assets.

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Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Decrease in servicing assets subsequently measured at fair value resulting from conveyance of servicing rights to unrelated parties.

+ References

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Amount of increase (decrease) from changes in fair value classified as other for a contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

+ References

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