CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Apr. 01, 2017	Dec. 31, 2016
CONSOLIDATED CONDENSED BALANCE SHEETS
Receivables, allowance for doubtful accounts (in dollars)	$ 1,300	$ 2,100
Unamortized debt issuance costs - Current	10,000	10,000
Unamortized debt issuance costs - Noncurrent	$ 71,000	$ 73,500
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	4,169,769	4,165,769
Common stock, shares outstanding	4,169,769	4,165,769