9. Primary Lender Credit Agreements, Notes Payable, Subordinated and Convertible Debentures Payable (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Credit agreements primary lender:
Primary lender debt-related party, bearing interest at prime plus 5%	$ 0	$ 500
Notes payable - $1,176,000 bearing interest at prime plus 2%,the remainder non-interest bearing, all past due	1,198	1,198
Total credit agreements	1,198	1,698
Subordinated debentures payable:
At 6-1/2% interest; due June 1, 1991	447	447
At 6% interest; due May 1, 1992	5,025	8,025
Subordinated convertible debentures payable	8,472	8,472
Collateralized convertible debentures payable-related party:
Convertible debt-related party at 14% interest; due July 8, 1997 convertible into shares of common stock at $1.72 per share	0	1,500
Total	$ 9,670	$ 11,670