9. Primary Lender Credit Agreements, Notes Payable, Subordinated and Convertible Debentures Payable (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Balance is past due, 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
At 6-1/2% interest; due June 1, 1991	1,034	1,034
At 6% interest; due May 1, 1992	8,025	8,025
Subordinated convertible debentures payable	9,059	9,059
At 14% interest; due July 8, 1997 convertible into shares of common stock at $1.72 per share	1,500	1,500
Total	$ 12,257	$ 12,257

Including the current and noncurrent portions, the carrying value of convertible subordinated debt, as of the balance sheet date, initially scheduled to be repaid after one year or beyond the normal operating cycle if longer. This form of debt can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder, and places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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