8. Subordinated Convertible Debentures Payable (Tables)

12 Months Ended

Dec. 31, 2015

Convertible Subordinated Debt [Abstract]

Subordinated debentures payable

	2015		2014
6 1/2%, due June, 1991	$	447,000	$	527,000
6%, due May, 1992		8,025,000		8,025,000
	$	8,472,000	$	8,552,000