Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2016	Dec. 26, 2015
Common stock, par value	$ 3.00	$ 3.00
Common stock, shares authorized	80,000,000	80,000,000
Common stock, shares issued	15,248,338	15,155,274
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	870,714	851,693