CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
NET SERVICE FEE REVENUE
Service fee revenue, net of contractual allowances and discounts	$ 179,762	$ 168,500
Provision for bad debts	(6,822)	(6,484)
Net service fee revenue	172,940	162,016
OPERATING EXPENSES
Cost of operations	149,562	135,400
Depreciation and amortization	14,760	14,892
Loss on sale and disposal of equipment	170	24
Severance costs	123	449
Total operating expenses	164,615	150,765
INCOME FROM OPERATIONS	8,325	11,251
OTHER EXPENSES
Interest expense	12,147	13,567
Other income	(2)	(1,147)
Total other expenses	12,145	12,420
INCOME BEFORE INCOME TAXES AND EQUITY IN EARNINGS OF JOINT VENTURES	(3,820)	(1,169)
Benefit from (provision for) income taxes	1,248	(245)
Equity in earnings of joint ventures	1,206	1,262
NET LOSS	(1,366)	(152)
Net loss attributable to noncontrolling interests	(24)	(41)
NET LOSS ATTRIBUTABLE TO RADNET, INC. COMMON STOCKHOLDERS	$ (1,342)	$ (111)
BASIC AND DILUTED NET LOSS PER SHARE ATTRIBUTABLE TO RADNET, INC. COMMON STOCKHOLDERS	$ (0.03)	$ 0.00
WEIGHTED AVERAGE SHARES OUTSTANDING
Basic and diluted	39,314,447	37,669,921