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FACILITY ACQUISITIONS, ASSETS HELD FOR SALE AND DISPOSITIONS (Details Narrative) - USD ($) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 03, 2018 | Nov. 05, 2018 | Nov. 01, 2018 | Oct. 01, 2018 | Sep. 01, 2018 | Apr. 01, 2018 | Feb. 22, 2018 | Jan. 01, 2018 | Oct. 05, 2017 | Oct. 01, 2017 | Sep. 01, 2017 | Aug. 07, 2017 | Jul. 01, 2017 | Jun. 01, 2017 | May 03, 2017 | Apr. 28, 2017 | Apr. 01, 2017 | Feb. 01, 2017 | Jan. 13, 2017 | Jan. 06, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 418,093,000 | $ 256,776,000 | $ 239,553,000
Fair value of investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 30,030,000 | 45,935,000 |
Gain on step up valuation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 39,539,000 | 0 | 0
Common stock issued for acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8,000,000 | 2,500,000 |
Proceeds from sale of business |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 8,429,000 | 0
Severance costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,931,000 | $ 1,821,000 | $ 2,877,000
Advanced Imaging Partners, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, ownership percentage by noncontrolling owners |  |  |  |  |  |  |  |  |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |
Advanced Imaging at Timonium |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of business |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,900,000 |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, ownership percentage by noncontrolling owners |  |  |  |  |  |  |  |  |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |
Transfer of fixed assets to new joint venture |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,100,000 |  |  |  |  |  |  |  |  |  |
Proceeds in excess of book value |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,800,000 |  |  |  |  |  |  |  |  |  |
Rhode Island Medical Imaging, Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of business |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,500,000 |  |  |  |  |  |  |
Gain on sale of investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,900,000 |  |  |  |  |  |  |
West Valley Imaging Center |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of business |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 5,900,000 |  |  |  |  |  |
Transfer of fixed assets to new joint venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,000,000 |  |  | $ 3,000,000 |  |  |
Proceeds in excess of book value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,800,000 |  |  |  |  |  |
West Valley Imaging Group, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, ownership percentage by noncontrolling owners |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25.00% |  |  |  |  |  |
Oncology practices |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of business |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,200,000 |  |  |  |  |  |
Gain on sale of investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 361,000 |  |  |  |  |  |
Orange County Diagnostics Imaging Center |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration transferred | $ 6,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other current assets acquired | 23,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other assets acquired | 69,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed assets acquired | 2,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill acquired | 3,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Arcadia Radiology Imaging |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration transferred |  | $ 3,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other current assets acquired |  | 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill acquired |  | 2,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equipment acquired |  | 80,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Southern California Diagnostic Imaging, Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration transferred |  |  | $ 1,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other current assets acquired |  |  | 18,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill acquired |  |  | 41,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equipment acquired |  |  | 110,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
New Jersey Imaging Network, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other current assets acquired |  |  |  | $ 235,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed assets acquired |  |  |  | 34,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill acquired |  |  |  | 106,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net working capital acquired |  |  |  | 11,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unfavorable lease contracts acquired |  |  |  | 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equipment debt assumed |  |  |  | 5,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bank debt assumed |  |  |  | $ 60,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity interest percentage |  |  |  | 49.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of investment |  |  |  | $ 42,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Adjustment of New Jersey Imaging Network investment balance |  |  |  | 44,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on step up valuation |  |  |  | 39,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Medical Arts Radiology |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration transferred |  |  |  | 59,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other current assets acquired |  |  |  | 200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed assets acquired |  |  |  | 15,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill acquired |  |  |  | 41,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net working capital acquired |  |  |  | 3,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unfavorable lease contracts acquired |  |  |  | 130,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equipment debt assumed |  |  |  | 2,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash acquired from acquisition |  |  |  | 50,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration to guarantee share value issued |  |  |  | 739,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to acquire business |  |  |  | 50,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Washington Heights Medical Management, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other current assets acquired |  |  |  |  | $ 43,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed assets acquired |  |  |  |  | 904,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill acquired |  |  |  |  | 2,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to acquire business |  |  |  |  | 3,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Women's Imaging Specialists in Healthcare |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed assets acquired |  |  |  |  |  | $ 636,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill acquired |  |  |  |  |  | 4,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to acquire business |  |  |  |  |  | 5,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Valley Metabolic Imaging |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed assets acquired |  |  |  |  |  | 22,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill acquired |  |  |  |  |  | 1,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to acquire business |  |  |  |  |  | 1,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sierra Imaging Associates |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed assets acquired |  |  |  |  |  | 270,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill acquired |  |  |  |  |  | 1,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to acquire business |  |  |  |  |  | 1,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Imaging Services Company of New York |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration transferred |  |  |  |  |  |  | $ 5,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed assets acquired |  |  |  |  |  |  | 3,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill acquired |  |  |  |  |  |  | 2,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beach Imaging Group, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed assets acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15,000,000 |  |
Capital lease assumed |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,000,000 |  |
Business acquisition, percentage of voting interests acquired |  |  |  |  |  |  |  | 60.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
RadSite, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed assets acquired |  |  |  |  |  |  |  |  | $ 25,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill acquired |  |  |  |  |  |  |  |  | 1,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to acquire business |  |  |  |  |  |  |  |  | 856,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock issued for acquisition |  |  |  |  |  |  |  |  | 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current assets acquired |  |  |  |  |  |  |  |  | 91,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Liabilities acquired |  |  |  |  |  |  |  |  | 75,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Remote Diagnostic Imaging P.L.L.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration transferred |  |  |  |  |  |  |  |  |  | $ 3,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed assets acquired |  |  |  |  |  |  |  |  |  | 2,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill acquired |  |  |  |  |  |  |  |  |  | 1,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Diagnostic Imaging Associates |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed assets acquired |  |  |  |  |  |  |  |  |  |  |  | $ 3,100,000 |  |  |  |  |  |  |  |  |  |  |
Goodwill acquired |  |  |  |  |  |  |  |  |  |  |  | 10,200,000 |  |  |  |  |  |  |  |  |  |  |
Payments to acquire business |  |  |  |  |  |  |  |  |  |  |  | 13,000,000 |  |  |  |  |  |  |  |  |  |  |
Common stock issued for acquisition |  |  |  |  |  |  |  |  |  |  |  | 1,500,000 |  |  |  |  |  |  |  |  |  |  |
Current assets acquired |  |  |  |  |  |  |  |  |  |  |  | $ 1,200,000 |  |  |  |  |  |  |  |  |  |  |
Stockton MRI, Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration transferred |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,400,000 |  |  |  |  |  |  |  |  |
Fixed assets acquired |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,200,000 |  |  |  |  |  |  |  |  |
Goodwill acquired |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,100,000 |  |  |  |  |  |  |  |  |
Intangible assets acquired |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 50,000 |  |  |  |  |  |  |  |  |
D&D Diagnostics, Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration transferred |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,400,000 |  |  |  |  |  |  |  |
Other current assets acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 16,000 |  |  |  |  |  |  |  |
Fixed assets acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 820,000 |  |  |  |  |  |  |  |
Goodwill acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,500,000 |  |  |  |  |  |  |  |
Payments to acquire business |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,200,000 |  |  |  |  |  |  |  |
Payoff of debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,200,000 |  |  |  |  |  |  |  |
MRI Centers, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration transferred |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 800,000 |  |  |  |  |
Other current assets acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9,800 |  |  |  |  |
Fixed assets acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 289,000 |  |  |  |  |
Goodwill acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 401,000 |  |  |  |  |
Intangible assets acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100,000 |  |  |  |  |
Payoff of debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 81,000 |  |  |  |  |
Resolution Imaging Medical Corp |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration transferred |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,000,000 |  |  |  |
Breastlink Medical |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of business |  |  |  |  |  |  |  |  |  |  | $ 2,800,000 |  |  |  |  |  |  |  |  |  |  |  |
Gain on sale of investment |  |  |  |  |  |  |  |  |  |  | 845,000 |  |  |  |  |  |  |  |  |  |  |  |
Severance costs |  |  |  |  |  |  |  |  |  |  | $ 1,200,000 |  |  |  |  |  |  |  |  |  |  |  |
Leasehold improvements | Arcadia Radiology Imaging |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed assets acquired |  | 819,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Leasehold improvements | Southern California Diagnostic Imaging, Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed assets acquired |  |  | 1,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncompete Agreements | Orange County Diagnostics Imaging Center |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets acquired | $ 50,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncompete Agreements | Arcadia Radiology Imaging |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets acquired |  | $ 300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncompete Agreements | Southern California Diagnostic Imaging, Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets acquired |  |  | $ 50,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncompete Agreements | Medical Arts Radiology |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets acquired |  |  |  | 24,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncompete Agreements | Washington Heights Medical Management, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets acquired |  |  |  |  | $ 50,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncompete Agreements | Women's Imaging Specialists in Healthcare |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets acquired |  |  |  |  |  | 143,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncompete Agreements | Valley Metabolic Imaging |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets acquired |  |  |  |  |  | 183,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncompete Agreements | Sierra Imaging Associates |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets acquired |  |  |  |  |  | 83,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncompete Agreements | Imaging Services Company of New York |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets acquired |  |  |  |  |  |  | $ 100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncompete Agreements | RadSite, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets acquired |  |  |  |  |  |  |  |  | $ 150,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncompete Agreements | Remote Diagnostic Imaging P.L.L.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets acquired |  |  |  |  |  |  |  |  |  | $ 50,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Trade Names | New Jersey Imaging Network, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets acquired |  |  |  | 582,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade Names | Medical Arts Radiology |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets acquired |  |  |  | $ 1,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade Names | Women's Imaging Specialists in Healthcare |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets acquired |  |  |  |  |  | $ 53,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock | Medical Arts Radiology |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
RadNet stock issued in acquisition (shares) |  |  |  | 531,560 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Value of RadNet stock issued in acquisition |  |  |  | $ 8,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
MemorialCare Medical Foundation | Beach Imaging Group, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed assets acquired |  |  |  |  |  |  |  | $ 7,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill acquired |  |  |  |  |  |  |  | 545,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equipment acquired |  |  |  |  |  |  |  | 7,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to acquire business |  |  |  |  |  |  |  | 22,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital lease assumed |  |  |  |  |  |  |  | $ 4,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business acquisition, percentage of voting interests acquired |  |  |  |  |  |  |  | 40.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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