Note 5 - Stock Options Outstanding (Details) - $ / shares	6 Months Ended
	Jul. 05, 2015
Outstanding at December 28, 2014 (in shares)	126,000
Outstanding at December 28, 2014 (in dollars per share)	$ 9.23
Granted (in shares)	0
Granted (in dollars per share)	$ 0
Exercised (in shares)	38,500
Exercised (in dollars per share)	$ 9.27
Forfeited or canceled (in shares)	0
Forfeited or canceled (in dollars per share)	$ 0
Outstanding at July 5, 2015 (in shares)	87,500
Outstanding at July 5, 2015 (in dollars per share)	$ 8.75
Exercisable at July 5, 2015 (in shares)	87,500
Exercisable at July 5, 2015 (in dollars per share)	$ 8.75