Note 6 - Treasury Stock	3 Months Ended
Mar. 31, 2022
Notes to Financial Statements
Treasury Stock [Text Block]	6. Treasury Stock Common stock held in treasury totaled 976,006 and 963,509 with a cost of $2,251 and $2,234 at March 31, 2022 and December 31, 2021, respectively. These shares were withheld from employees to settle personal tax withholding obligations that arose as a result of restricted stock units that vested in the periods presented.

The entire disclosure for treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-URI https://asc.fasb.org/subtopic&trid=2208821

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