Purchased Asset and Investments (Tables)

12 Months Ended

Dec. 31, 2016

Equity Method Investments and Joint Ventures [Abstract]

Schedule of Interest in RadQual, LLC

	2016		2015
Current assets	$	501,000	$	510,000
Noncurrent assets		12,000		14,000
Current liabilities		293,000		345,000
Noncurrent liabilities		-		-
Revenue		3,116,000		3,033,000
Gross profit		856,000		858,000
Net income	$	318,000	$	342,000