CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
REVENUE
Service fee revenue, net of contractual allowances and discounts	$ 1,028,236	$ 868,741
Service fee revenue			$ 810,623
Total revenue	1,154,179	975,146	922,186
OPERATING EXPENSES
Cost of operations, excluding depreciation and amortization	999,692	867,547	802,377
Depreciation and amortization	80,607	72,899	66,796
Loss (gain) on sale and disposal of equipment and other	2,383	(2,054)	1,142
Loss on impairment	0	3,937	0
Severance costs	1,619	1,931	1,821
Total operating expenses	1,084,301	944,260	872,136
INCOME FROM OPERATIONS	69,878	30,886	50,050
OTHER INCOME AND EXPENSES
Interest expense	48,044	43,456	40,623
Equity in earnings of joint ventures	(8,350)	(11,377)	(13,554)
Gain on re-measurement of pre-existing interest	(768)	(39,539)	0
Gain on sale of imaging centers and medical practice	0	0	(3,146)
Other expenses (income)	1,283	(181)	(258)
Total other expenses (income)	40,209	(7,641)	23,665
INCOME BEFORE INCOME TAXES	29,669	38,527	26,385
Provision for income taxes	(6,229)	(394)	(24,310)
NET INCOME	23,440	38,133	2,075
Net income attributable to noncontrolling interests	8,684	5,890	2,022
NET INCOME ATTRIBUTABLE TO RADNET, INC. COMMON STOCKHOLDERS	$ 14,756	$ 32,243	$ 53
BASIC NET INCOME PER SHARE ATTRIBUTABLE TO RADNET, INC. COMMON STOCKHOLDERS (in dollars per share)	$ 0.30	$ 0.67	$ 0
DILUTED NET INCOME PER SHARE ATTRIBUTABLE TO RADNET, INC. COMMON STOCKHOLDERS (in dollars per share)	$ 0.29	$ 0.66	$ 0
Weighted average shares outstanding, basic (in shares)	49,674,858	48,114,275	46,880,775
Weighted average shares outstanding, diluted (in shares)	50,244,006	48,678,999	47,401,921
Health Care, Patient Service
REVENUE
Service fee revenue, net of contractual allowances and discounts	$ 1,028,236	$ 868,741	$ 857,178
Provision for bad debts			(46,555)
Revenue under capitation arrangements
REVENUE
Service fee revenue, net of contractual allowances and discounts	$ 125,943	$ 106,405	$ 111,563