7. Credit Agreements, Notes Payable, Subordinated and Convertible Debentures Payable (Details 1) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
6.5% Debenture subordinated debt	$ 138	$ 447
Face value of debentures surrendered	22	0
Face value of debentures escheated	287	0
Accrued interest 6.5% Debenture subordinated debt	268	846
Debenture reserve account balance	13	41
Debenture reserve funds utilized in payment of final distribution	2	0
Debenture reserve funds utilized in escheatment to states of debenture holders	26	0
Forgiveness of debt	281	0
Forgiveness of interest	$ 594	$ 0