CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) [Abstract]
Revenue	$ 841,000	$ 865,000
Costs and expenses:
Patient expenses	86,000	378,000
Selling, general and administrative	308,000	278,000
Total	394,000	656,000
Operating income	447,000	209,000
Interest expense	(29,000)	(32,000)
Interest income	39,000	1,000
Interest income - sales-type sublease	38,000	0
Loss from investments in unconsolidated entities, net	(233,000)	(30,000)
Income before income taxes	262,000	148,000
Provision for income tax expense	(76,000)	(86,000)
Net income	$ 186,000	$ 62,000
Basic and diluted net income per share (in dollars per share)	$ 0.02	$ 0.01
Weighted average common shares outstanding (in shares)	7,792,185	7,792,185