CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
CURRENT ASSETS
Cash and cash equivalents	$ 268	$ 362
Accounts receivable, net	134,265	129,194
Current portion of deferred tax assets	5,888	7,607
Prepaid expenses and other current assets	17,803	18,737
Total current assets	158,224	155,900
PROPERTY AND EQUIPMENT, NET	217,383	216,560
OTHER ASSETS
Goodwill	196,090	193,871
Other intangible assets	50,808	51,674
Deferred financing costs	10,600	11,977
Investment in joint ventures	28,610	28,598
Deferred tax assets, net of current portion	49,679	48,535
Deposits and other	3,738	3,749
Total assets	715,132	710,864
LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT)
Accounts payable, accrued expenses and other	99,765	106,357
Due to affiliates	1,273	1,602
Deferred revenue	1,448	1,273
Current portion of deferred rent	1,448	4,703
Current portion of notes payable	5,431	1,164
Current portion of obligations under capital leases	2,071	3,942
Total current liabilities	111,436	119,041
LONG-TERM LIABILITIES
Deferred rent, net of current portion	18,459	15,850
Line of credit	3,400	33,000
Notes payable, net of current portion	571,082	537,009
Obligations under capital lease, net of current portion	2,523	3,753
Other non-current liabilities	7,870	8,895
Total liabilities	714,770	717,548
STOCKHOLDERS' EQUITY (DEFICIT)
Common stock - $.0001 par value, 200,000,000 shares authorized; 40,089,196, and 38,540,482 shares issued and outstanding at September 30, 2013 and December 31, 2012, respectively	4	4
Paid-in-capital	173,130	168,415
Accumulated other comprehensive (loss) income	(65)	39
Accumulated deficit	(174,899)	(175,776)
Total Radnet, Inc.'s stockholders' equity (deficit)	(1,830)	(7,318)
Noncontrolling interests	2,192	634
Total stockholders' equity (deficit)	362	(6,684)
Total liabilities and stockholders' equity (deficit	$ 715,132	$ 710,864