Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical)

v2.4.0.8
Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
Sep. 27, 2014
Dec. 28, 2013
Statement of Financial Position [Abstract]    
Allowance for Doubtful Accounts Receivable, Current $ 1,559,562 $ 1,079,288
Assets    
Accumulated depreciation $ 45,165,201 $ 42,489,518
Shareholders' equity    
Common stock, par value (in dollars per share) $ 1 $ 1
Common stock, shares authorized (in shares) 12,000,000 12,000,000
Common stock, shares issued (in shares) 10,300,000 10,300,000
Common stock in treasury, at cost (in shares) 1,590,874 1,612,200