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2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Dec. 31, 2013
Accounting Policies [Abstract] |
Service Fee Revenue |
|  | Years Ended December 31, |
|  | 2013 |  |  | 2012 |  |  | 2011 |
Commercial insurance |  | $ | 432,608 |  |  | $ | 409,114 |  |  | $ | 376,107 |
Medicare |  |  | 139,220 |  |  |  | 122,971 |  |  |  | 107,613 |
Medicaid |  |  | 21,351 |  |  |  | 20,101 |  |  |  | 17,756 |
Workers' compensation/personal injury |  |  | 30,819 |  |  |  | 26,604 |  |  |  | 23,137 |
Other |  |  | 41,309 |  |  |  | 39,192 |  |  |  | 30,367 |
Service fee revenue, net of contractual allowances and discounts |  |  | 665,307 |  |  |  | 617,982 |  |  |  | 554,979 |
Provision for bad debts |  |  | (27,911 | ) |  |  | (25,904 | ) |  |  | (22,339 | )
Net service fee revenue |  |  | 637,396 |  |  |  | 592,078 |  |  |  | 532,640 |
Revenue under capitation arrangements |  |  | 65,590 |  |  |  | 55,075 |  |  |  | 52,481 |
Total net revenue |  | $ | 702,986 |  |  | $ | 647,153 |  |  | $ | 585,121 |
Fair Value of long-term debt |
|  | As of December 31, 2013 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total Fair Value |  |  | Total Carrying Value |
Senior Secured Term Loan |  | $ | – |  |  | $ | 380,508 |  |  | $ | – |  |  | $ | 380,508 |  |  | $ | 385,325 |
Senior Notes |  |  | – |  |  |  | 199,000 |  |  |  | – |  |  |  | 199,000 |  |  |  | 200,000 |
|  | As of December 31, 2012 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |  |  | Total Carrying Value |
Senior Secured Term Loan |  | $ | – |  |  | $ | 352,180 |  |  | $ | – |  |  | $ | 352,180 |  |  | $ | 349,125 |
Senior Notes |  |  | – |  |  |  | 204,500 |  |  |  | – |  |  |  | 204,500 |  |  |  | 200,000 |
Earnings per share |
|  | Years Ended December 31, |
|  | 2013 |  |  | 2012 |  |  | 2011 |
Net income attributable to RadNet, Inc.'s common stockholders |  | $ | 2,120 |  |  | $ | 59,834 |  |  | $ | 7,231 |
BASIC NET INCOME PER SHARE ATTRIBUTABLE TO RADNET, INC.'S COMMON STOCKHOLDERS |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of common shares outstanding during the period |  |  | 39,140,480 |  |  |  | 37,751,170 |  |  |  | 37,367,736 |
Basic net income per share attributable to RadNet, Inc.'s common stockholders |  | $ | 0.05 |  |  | $ | 1.58 |  |  | $ | 0.19 |
DILUTED NET INCOME PER SHARE ATTRIBUTABLE TO RADNET, INC.'S COMMON STOCKHOLDERS |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of common shares outstanding during the period |  |  | 39,140,480 |  |  |  | 37,751,170 |  |  |  | 37,367,736 |
Add nonvested restricted stock subject only to service vesting |  |  | 316,905 |  |  |  | 533,014 |  |  |  | – |
Add additional shares issuable upon exercise of stock options and warrants |  |  | 357,150 |  |  |  | 960,502 |  |  |  | 1,417,939 |
Weighted average number of common shares used in calculating diluted net income per share |  |  | 39,814,535 |  |  |  | 39,244,686 |  |  |  | 38,785,675 |
Diluted net income per share attributable to RadNet, Inc.'s common stockholders |  | $ | 0.05 |  |  | $ | 1.52 |  |  | $ | 0.19 |
Investment in joint ventures |
Balance as of December 31, 2012 |  | $ | 28,598 |
Acquisition of a controlling interest in a joint venture (see Note 4) |  |  | (648 | )
Purchase of a 40% interest in a new joint venture (see Note 4) |  |  | 1,000 |
Equity contributions in existing joint ventures |  |  | 1,009 |
Equity earnings in these joint ventures |  |  | 6,194 |
Distribution of earnings |  |  | (7,204 | )
Balance as of December 31, 2013 |  | $ | 28,949 |
Key financial data on joint ventures |
|  | December 31, |
Balance Sheet Data: |  | 2013 |  |  | 2012 |
Current assets |  | $ | 16,203 |  |  | $ | 17,026 |
Noncurrent assets |  |  | 49,324 |  |  |  | 49,163 |
Current liabilities |  |  | (6,158 | ) |  |  | (7,419 | )
Noncurrent liabilities |  |  | (6,793 | ) |  |  | (8,997 | )
Total net assets |  | $ | 52,576 |  |  | $ | 49,773 |
Book value of RadNet joint venture interests |  | $ | 23,705 |  |  | $ | 24,712 |
Cost in excess of book value of acquired joint venture interests |  |  | 4,922 |  |  |  | 3,511 |
Elimination of intercompany profit remaining on Radnet's consolidated balance sheet |  |  | 322 |  |  |  | 375 |
Total value of Radnet joint venture interests |  | $ | 28,949 |  |  | $ | 28,598 |
Total book value of other joint venture partner interests |  | $ | 28,871 |  |  | $ | 25,061 |
Income statement data for the years ended December 31, |  | 2013 |  |  | 2012 |  |  | 2011 |
Net revenue |  | $ | 93,134 |  |  | $ | 85,036 |  |  | $ | 76,076 |
Net income |  | $ | 13,633 |  |  | $ | 14,031 |  |  | $ | 11,655 |

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