CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
CURRENT ASSETS
Cash and cash equivalents	$ 31,091	$ 102,018
Accounts receivable	146,665	129,585
Due from affiliates	7,521	5,836
Prepaid expenses and other current assets	37,720	32,985
Total current assets	222,997	270,424
PROPERTY, EQUIPMENT AND RIGHT-OF-USE ASSETS
Property and equipment, net	412,711	399,335
Operating lease right-of-use assets	529,563	483,661
Total property, equipment and right-of-use assets	942,274	882,996
OTHER ASSETS
Goodwill	502,566	472,879
Other intangible assets	52,198	52,393
Deferred financing costs	1,590	1,767
Investment in joint ventures	36,813	34,528
Deferred tax assets, net of current portion	31,554	34,687
Deposits and other	38,794	36,983
Total assets	1,828,786	1,786,657
CURRENT LIABILITIES
Accounts payable, accrued expenses and other	231,700	236,684
Due to affiliates	18,133	14,010
Deferred revenue	40,648	39,257
Current finance lease liability	2,080	2,578
Current operating lease liability	69,890	65,794
Current portion of notes payable	40,166	39,791
Total current liabilities	402,617	398,114
LONG-TERM LIABILITIES
Long-term finance lease liability	414	743
Long-term operating lease liability	504,474	463,096
Notes payable, net of current portion	602,684	612,913
Other non-current liabilities	37,239	53,488
Total liabilities	1,547,428	1,528,354
EQUITY
Common stock - $0.0001 par value, 200,000,000 shares authorized; 52,340,856 and 51,640,537 shares issued and outstanding at March 31, 2021 and December 31, 2020, respectively	5	5
Additional paid-in-capital	316,032	307,788
Accumulated other comprehensive loss	(23,138)	(24,051)
Accumulated deficit	(108,541)	(117,999)
Total RadNet, Inc.'s stockholders' equity	184,358	165,743
Noncontrolling interests	97,000	92,560
Total equity	281,358	258,303
Total liabilities and equity	$ 1,828,786	$ 1,786,657