9. Primary Lender Credit Agreements, Notes Payable, Subordinated and Convertible Debentures Payable (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Primary Lender Credit Agreements Notes Payable Subordinated And Convertible Debentures Payable
Primary lender debt-related party, bearing interest at prime plus 5%	$ 500	$ 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	1,698	1,698
Subordinated debentures payable:
At 6-1/2% interest; due June 1, 1991	456	527
At 6% interest; due May 1, 1992	8,025	8,025
Subordinated convertible debentures payable	8,481	8,552
Convertible debt-related party at 14% interest; due July 8, 1997 convertible into shares of common stock at $1.72 per share	1,500	1,500
Total	$ 11,679	$ 11,750