Consolidated Condensed Balance Sheets (Parentheticals) - $ / shares	Sep. 28, 2019	Dec. 29, 2018
Common stock, par value	$ 3.00	$ 3.00
Common stock, shares authorized	80,000,000	80,000,000
Common stock, shares issued	15,525,141	15,522,588
Class B Common stock, par value	$ 3.00	$ 3.00
Class B Common stock, shares authorized	16,000,000	16,000,000
Class B Common stock, shares issued	836,669	839,304