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Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
Dec. 27, 2018
Jun. 28, 2018
Dec. 28, 2017
Allowance for doubtful accounts for accounts receivable, current $ 342 $ 270 $ 273
Accumulated depreciation of rental investment property 10,827 10,431 10,035
Current maturities of long-term debt, related party debt 4,359 4,341 4,324
Unamortized debt issuance costs, current 40 45 50
Related party debt, Non-current 13,323 15,507 17,682
Unamortized debt issuance costs, noncurrent $ 60 $ 79 $ 100
Treasury stock, shares 117,900 117,900 117,900
Class A Common Stock [Member]      
Common stock, par value $ 0.01 $ 0.01 $ 0.01
Common stock, shares authorized 10,000,000 10,000,000 10,000,000
Common stock, shares issued 2,597,426 2,597,426 2,597,426
Common stock, shares outstanding 2,597,426 2,597,426 2,597,426
Common Stock, Non-Cumulative Voting Rights of One Vote Per Share [Member]      
Common stock, par value $ 0.01 $ 0.01 $ 0.01
Common stock, shares authorized 17,000,000 17,000,000 17,000,000
Common stock, shares issued 8,898,827 8,865,475 8,859,097