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8. SUPPLEMENTAL GUARANTOR INFORMATION (Details 1) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2013 | Dec. 31, 2012 | Mar. 31, 2012 | Dec. 31, 2011
--- | --- | --- | --- | ---
CURRENT ASSETS |  |  |  |
Cash and cash equivalents | $ 431 | $ 362 | $ 1,834 | $ 2,455
Accounts receivable, net | 134,939 | 129,194 |  |
Current deferred tax assets | 8,792 | 7,607 |  |
Prepaid expenses and other current assets | 20,213 | 18,737 |  |
Total current assets | 164,375 | 155,900 |  |
PROPERTY AND EQUIPMENT, NET | 217,443 | 216,560 |  |
OTHER ASSETS |  |  |  |
Goodwill | 197,090 | 193,871 |  |
Other intangible assets | 52,236 | 51,674 |  |
Deferred financing costs, net | 11,387 | 11,977 |  |
Investment in joint ventures | 27,959 | 28,598 |  |
Deferred tax assets, net of current portion | 53,054 | 52,790 |  |
Deposits and other | 3,590 | 3,749 |  |
Total assets | 727,134 | 715,119 |  |
LIABILITIES AND STOCKHOLDERS' EQUITY DEFICIT |  |  |  |
Accounts payable, accrued expenses and other | 112,808 | 105,929 |  |
Due to affiliates | 1,495 | 1,602 |  |
Deferred revenue | 1,276 | 1,273 |  |
Current portion of deferred rent | 1,262 | 1,164 |  |
Current portion of notes payable | 5,226 | 4,703 |  |
Current portion of obligations under capital leases | 3,138 | 3,942 |  |
Total current liabilities | 125,205 | 118,613 |  |
LONG-TERM LIABILITIES |  |  |  |
Deferred rent, net of current portion | 16,185 | 15,850 |  |
Line of credit | 34,500 | 33,000 |  |
Notes payable, net of current portion | 537,799 | 537,009 |  |
Obligations under capital lease, net of current portion | 3,350 | 3,753 |  |
Other non-current liabilities | 8,481 | 8,895 |  |
Total liabilities | 725,520 | 717,120 |  |
EQUITY (DEFICIT) |  |  |  |
Total RadNet, Inc.'s equity (deficit) | (414) | (2,635) |  |
Noncontrolling interests | 2,028 | 634 |  |
Total equity (deficit) | 1,614 | (2,001) |  |
Total liabilities and stockholders' equity (deficit) | 727,134 | 715,119 |  |
Parent [Member] |  |  |  |
OTHER ASSETS |  |  |  |
Investment in subsidiaries | (414) | (2,635) |  |
Total assets | (414) | (2,635) |  |
EQUITY (DEFICIT) |  |  |  |
Total RadNet, Inc.'s equity (deficit) | (414) | (2,635) |  |
Total equity (deficit) | (414) | (2,635) |  |
Total liabilities and stockholders' equity (deficit) | (414) | (2,635) |  |
Subsidiary Issuer [Member] |  |  |  |
CURRENT ASSETS |  |  |  |
Cash and cash equivalents |  | 362 |  | 1,366
Prepaid expenses and other current assets | 13,382 | 9,735 |  |
Total current assets | 13,382 | 10,097 |  |
PROPERTY AND EQUIPMENT, NET | 49,203 | 48,025 |  |
OTHER ASSETS |  |  |  |
Goodwill | 49,139 | 48,954 |  |
Other intangible assets | 160 | 170 |  |
Deferred financing costs, net | 11,387 | 11,977 |  |
Investment in subsidiaries | 350,608 | 342,796 |  |
Deposits and other | 1,596 | 1,821 |  |
Total assets | 475,475 | 463,840 |  |
LIABILITIES AND STOCKHOLDERS' EQUITY DEFICIT |  |  |  |
Intercompany | (165,623) | (176,217) |  |
Accounts payable, accrued expenses and other | 56,129 | 57,939 |  |
Current portion of deferred rent | 605 | 574 |  |
Current portion of notes payable | 3,500 | 3,500 |  |
Current portion of obligations under capital leases | 947 | 1,186 |  |
Total current liabilities | (104,442) | (113,018) |  |
LONG-TERM LIABILITIES |  |  |  |
Deferred rent, net of current portion | 9,703 | 9,579 |  |
Line of credit | 34,500 | 33,000 |  |
Notes payable, net of current portion | 535,640 | 536,248 |  |
Obligations under capital lease, net of current portion | 488 | 666 |  |
Total liabilities | 475,889 | 466,475 |  |
EQUITY (DEFICIT) |  |  |  |
Total RadNet, Inc.'s equity (deficit) | (414) | (2,635) |  |
Total equity (deficit) | (414) | (2,635) |  |
Total liabilities and stockholders' equity (deficit) | 475,475 | 463,840 |  |
Guarantor Subsidiaries [Member] |  |  |  |
CURRENT ASSETS |  |  |  |
Cash and cash equivalents | 431 |  | 881 |
Accounts receivable, net | 64,597 | 76,838 |  |
Current deferred tax assets | 8,792 | 7,607 |  |
Prepaid expenses and other current assets | 6,097 | 8,308 |  |
Total current assets | 79,917 | 92,753 |  |
PROPERTY AND EQUIPMENT, NET | 161,970 | 168,401 |  |
OTHER ASSETS |  |  |  |
Goodwill | 143,211 | 144,072 |  |
Other intangible assets | 51,974 | 51,394 |  |
Investment in subsidiaries | 14,746 | 9,217 |  |
Investment in joint ventures | 27,959 | 28,598 |  |
Deferred tax assets, net of current portion | 53,054 | 52,790 |  |
Deposits and other | 1,935 | 1,928 |  |
Total assets | 534,766 | 549,153 |  |
LIABILITIES AND STOCKHOLDERS' EQUITY DEFICIT |  |  |  |
Intercompany | 112,383 | 138,223 |  |
Accounts payable, accrued expenses and other | 48,361 | 41,696 |  |
Due to affiliates | 1,495 | 1,602 |  |
Deferred revenue | 1,276 | 1,273 |  |
Current portion of deferred rent | 611 | 590 |  |
Current portion of notes payable | 1,004 | 1,203 |  |
Current portion of obligations under capital leases | 1,301 | 2,756 |  |
Total current liabilities | 166,431 | 187,343 |  |
LONG-TERM LIABILITIES |  |  |  |
Deferred rent, net of current portion | 6,290 | 6,271 |  |
Notes payable, net of current portion | 638 | 761 |  |
Obligations under capital lease, net of current portion | 2,318 | 3,087 |  |
Other non-current liabilities | 8,481 | 8,895 |  |
Total liabilities | 184,158 | 206,357 |  |
EQUITY (DEFICIT) |  |  |  |
Total RadNet, Inc.'s equity (deficit) | 350,608 | 342,796 |  |
Total equity (deficit) | 350,608 | 342,796 |  |
Total liabilities and stockholders' equity (deficit) | 534,766 | 549,153 |  |
Non-Guarantor Subsidiaries [Member] |  |  |  |
CURRENT ASSETS |  |  |  |
Cash and cash equivalents |  |  | 953 | 1,089
Accounts receivable, net | 70,342 | 52,356 |  |
Prepaid expenses and other current assets | 734 | 694 |  |
Total current assets | 71,076 | 53,050 |  |
PROPERTY AND EQUIPMENT, NET | 6,270 | 134 |  |
OTHER ASSETS |  |  |  |
Goodwill | 4,740 | 845 |  |
Other intangible assets | 102 | 110 |  |
Deposits and other | 59 |  |  |
Total assets | 82,247 | 54,139 |  |
LIABILITIES AND STOCKHOLDERS' EQUITY DEFICIT |  |  |  |
Intercompany | 53,240 | 37,994 |  |
Accounts payable, accrued expenses and other | 8,318 | 6,294 |  |
Current portion of deferred rent | 46 |  |  |
Current portion of notes payable | 722 |  |  |
Current portion of obligations under capital leases | 890 |  |  |
Total current liabilities | 63,216 | 44,288 |  |
LONG-TERM LIABILITIES |  |  |  |
Deferred rent, net of current portion | 192 |  |  |
Notes payable, net of current portion | 1,521 |  |  |
Obligations under capital lease, net of current portion | 544 |  |  |
Total liabilities | 65,473 | 44,288 |  |
EQUITY (DEFICIT) |  |  |  |
Total RadNet, Inc.'s equity (deficit) | 14,746 | 9,217 |  |
Noncontrolling interests | 2,028 | 634 |  |
Total equity (deficit) | 16,774 | 9,851 |  |
Total liabilities and stockholders' equity (deficit) | 82,247 | 54,139 |  |
Eliminations [Member] |  |  |  |
OTHER ASSETS |  |  |  |
Investment in subsidiaries | (364,940) | (349,378) |  |
Total assets | (364,940) | (349,378) |  |
EQUITY (DEFICIT) |  |  |  |
Total RadNet, Inc.'s equity (deficit) | (364,940) | (349,378) |  |
Total equity (deficit) | (364,940) | (349,378) |  |
Total liabilities and stockholders' equity (deficit) | $ (364,940) | $ (349,378) |  |

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- Definition Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4568740-111683 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A3 -Appendix A Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 26 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4I -URI http://asc.fasb.org/extlink&oid=18733213&loc=SL4590271-111686 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4568447-111683 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 25 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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