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Note 4 - (Loss) Earnings Per Share - Basic and Diluted Net Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net (loss) earnings	$ (3,804)	$ 1,131
Undistributed (loss) earnings	(4,643)	293
Common Class A [Member]
Net (loss) earnings	(649)	180
Less dividends declared	130	130
Undistributed (loss) earnings	$ (780)	$ 50
Weighted-average shares outstanding, basic and diluted (in shares)	2,145	2,175
Common shares - basic and diluted (in dollars per share)	$ (0.30)	$ 0.08
Common Class B [Member]
Net (loss) earnings	$ (3,155)	$ 951
Less dividends declared	709	708
Undistributed (loss) earnings	$ (3,863)	$ 243
Weighted-average shares outstanding, basic and diluted (in shares)	10,123	10,089
Common shares - basic and diluted (in dollars per share)	$ (0.31)	$ 0.09

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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