Note 4 - Earnings Per Common Share (EPS) (Details Textual) - Share-based Payment Arrangement, Option [Member] - $ / shares	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Antidilutive Securities Excluded from Computation Of Earnings Per Share Amount Based on Net Income Position	19,250	5,000	16,000	13,000
Share Based Compensation Arrangement by Share Based Payment Award Options With AntiDilutive Effect Weighted Average Exercise Price Based on Net Income Position	$ 11.32	$ 8.76	$ 12.17	$ 14.94
Dilutive Securities Excluded from Computation of Earnings Per Share Amount Based on Net Income Position			3,250
Share Based Compensation Arrangement by Share Based Payment Award Options with Dilutive Effect Weighted Average Exercise Price Based on Net Income Position			$ 7.15

Based on the Company's net income position, securities that would remain anti-dilutive and be excluded as part of the weighted average common and common equivalent shares outstanding.

No definition available.

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