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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Notes and interest receivable $ 169,299 $ 140,327
Allowance for doubtful accounts 13,099 14,269
Deferred revenue 24,762 33,904
Accounts payable and other liabilities $ 24,768 $ 25,576
Series A Preferred stock, par value (in dollars per share) $ 2.00  
Series A Preferred stock, authorized (in shares) 15,000,000  
Series A Preferred stock, liquidation preference (in dollars per share) $ 10.00  
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, authorized (in shares) 100,000,000 100,000,000
Common stock, issued (in shares) 16,412,861 16,412,861
Common stock, outstanding (in shares) 15,997,076 15,997,076
Treasury stock (in shares) 415,785 415,785
TCI [Member]    
Common stock, outstanding (in shares) 140,000 140,000
Treasury stock (in shares) 140,000 140,000
Series A Preferred Stock [Member]    
Series A Preferred stock, par value (in dollars per share) $ 2.00 $ 2.00
Series A Preferred stock, authorized (in shares) 15,000,000 15,000,000
Series A Preferred stock, issued (in shares) 1,800,614 1,800,614
Series A Preferred stock, outstanding (in shares) 614 614
Series A Preferred stock, liquidation preference (in dollars per share) $ 10.00 $ 10.00
Series A Preferred Stock [Member] | ARL and Subsidiaries [Member]    
Series A Preferred stock, issued (in shares) 1,800,000 1,800,000
Related Parties [Member]    
Notes and interest receivable $ 105,524 $ 105,803
Allowance for doubtful accounts 13,099 14,269
Deferred revenue 24,762 33,904
Accounts payable and other liabilities $ 11,817 $ 9,984