4. FACILITY ACQUISITIONS AND DISPOSITIONS (Details Narrative) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Common stock issued for acquisition			$ 1,500
Proceeds from sale of business			9,000	$ 63
Transfer of fixed assets to new joint venture			2,500	0
Severance costs	$ 1,186	$ 2,188	1,566	$ 2,528
Advanced Imaging at Timonium [Member]
Proceeds from sale of business			3,900
Proceeds in excess of book value			2,800
Transfer of fixed assets to new joint venture			1,100
Rhode Island Medical Imaging, Inc [Member]
Proceeds from sale of business			4,500
Gain on sale of investment			1,900
West Valley Imaging Center [Member]
Proceeds from sale of business			5,900
Proceeds in excess of book value			1,800
Transfer of fixed assets to new joint venture			3,000
Oncology practices [Member]
Proceeds from sale of business			1,200
Gain on sale of investment			361
Diagnostic Imaging Associates [Member]
Payments to acquire business			13,000
Common stock issued for acquisition			1,500
Fixed assets acquired	4,500		4,500
Current assets acquired	800		800
Goodwill acquired	9,200		9,200
Intangible assets acquired	50		50
Stockton MRI, Inc [Member]
Consideration transferred			4,400
Fixed assets acquired	1,200		1,200
Goodwill acquired	3,100		3,100
Intangible assets acquired	50		50
D&D Diagnostics, Inc [Member]
Consideration transferred			2,400
Payments to acquire business			1,200
Payoff of debt			1,200
Fixed assets acquired	820		820
Other assets acquired	16		16
Goodwill acquired	1,500		1,500
MRI Centers, Inc. [Member]
Consideration transferred			800
Payoff of debt			81
Fixed assets acquired	289		289
Other assets acquired	10		10
Goodwill acquired	401		401
Intangible assets acquired	$ 100		100
Resolution Imaging Medical Corp [Member]
Consideration transferred			4,000
Breastlink Medical [Member]
Proceeds from sale of business			2,800
Gain on sale of investment			845
Severance costs			1,200
Santa Monica Imaging Group [Member]
Payments to acquire business			80
Transfer of fixed assets to new joint venture			$ 2,500
Equity Method Investment, Ownership Percentage	40.00%		40.00%
ScriptSender LLC [Member]
Transfer of fixed assets to new joint venture			$ 3,000
Equity Method Investment, Ownership Percentage	49.00%		49.00%
Carrying amount of investment	$ 2,700		$ 2,700