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7. Credit Agreements, Notes Payable, Subordinated and Convertible Debentures Payable (Tables)
3 Months Ended
Mar. 31, 2017
Credit Agreements Notes Payable Subordinated And Convertible Debentures Payable  
Credit agreements with the Company
   March 31,  December 31,
   2017  2016
   ($ in thousands)
       
Notes payable - $1,176,000 bearing interest at prime plus 2%, the remainder non-interest bearing, all past due   1,198    1,198 
           
Subordinated convertible debentures payable:           
At 6-1/2% interest; due June 1, 1991   447    447 
At 6% interest; due May 1, 1992   8,025    8,025 
    8,472    8,472 
   $9,670   $9,670