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SIGNIFICANT ACCOUNTING POLICIES (Details - Narrative) |  |  |  |  |  | 3 Months Ended | 6 Months Ended | 12 Months Ended | 24 Months Ended | 40 Months Ended |  |  |  |  |  |
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Jun. 24, 2022 USD ($) | Jan. 20, 2022 USD ($) milestone $ / shares shares | Jul. 01, 2020 USD ($) | Nov. 05, 2019 USD ($) | Feb. 01, 2018 USD ($) shares | Jun. 30, 2022 USD ($) security incentivePlan jointVenture | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) security incentivePlan jointVenture | Jun. 30, 2021 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Oct. 30, 2025 USD ($) | Dec. 31, 2021 USD ($) | Oct. 31, 2023 USD ($) | Dec. 31, 2022 | Mar. 31, 2022 USD ($) | Apr. 15, 2021 incentivePlan shares | Dec. 21, 2019 shares | Jun. 30, 2019 USD ($) agreement | Jan. 01, 2019 USD ($)
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contracts receivable, factoring receivable |  |  |  |  |  | $ 17,000,000 |  | $ 17,000,000 |  | $ 17,700,000 |  |  | $ 17,700,000 |  |  |  |  |  |  |
Deferred financing costs, net of accumulated amortization |  |  |  |  |  | 1,900,000 |  | 1,900,000 |  | 2,100,000 |  |  | 2,100,000 |  |  |  |  |  |  |
Goodwill |  |  |  |  |  | 577,781,000 |  | 577,781,000 |  | 513,820,000 |  |  | 513,820,000 |  |  |  |  |  |  |
Indefinite-lived intangible assets |  |  |  |  |  | 12,700,000 |  | 12,700,000 |  |  |  |  |  |  |  |  |  |  |  |
Income tax expense |  |  |  |  |  | $ 3,403,000 | $ 2,874,000 | $ 4,900,000 | $ 7,249,000 |  |  |  |  |  |  |  |  |  |  |
Effective tax rate |  |  |  |  |  | 19.70% | 26.20% |  |  |  |  |  |  |  |  |  |  |  |  |
Number of plans | incentivePlan |  |  |  |  |  | 1 |  | 1 |  |  |  |  |  |  |  |  | 1 |  |  |
Number of shares authorized (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 16,500,000 |  |  |
Amount of loss recognized in income on derivative (current period ineffective portion) |  |  | $ 24,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share price (dollars per share) | $ / shares |  | $ 17.28 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total credit facilities outstanding |  |  |  |  |  | $ 0 |  | $ 0 |  | 0 |  |  | 0 |  |  |  |  |  |  |
Number of securities without readily determinable fair value | security |  |  |  |  |  | 3 |  | 3 |  |  |  |  |  |  |  |  |  |  |  |
Number of unconsolidated joint ventures | jointVenture |  |  |  |  |  | 13 |  | 13 |  |  |  |  |  |  |  |  |  |  |  |
Management service fees |  |  |  |  |  | $ 5,600,000 | $ 5,500,000 | $ 11,100,000 | 10,800,000 |  |  |  |  |  |  |  |  |  |  |
Equity contributions in existing joint ventures | $ 1,400,000 |  |  |  |  |  |  | 1,441,000 |  |  |  |  |  |  |  |  |  |  |  |
Medic Vision |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net assets |  |  |  |  |  | $ 1,200,000 |  | $ 1,200,000 |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  |  | 14.21% |  | 14.21% |  |  |  |  |  |  |  |  |  |  |  |
WhiteRabbit.ai Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to acquire equity method investments |  |  |  | $ 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to fund loan to related parties |  |  |  | $ 2,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Turner Imaging |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares purchased (in shares) | shares |  |  |  |  | 2,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to acquire equity method investments |  |  |  |  | $ 2,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock issued upon conversion (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 80,000 |  |
Turner Imaging | Promissory Note |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short-term debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 100,000
Aidence Holding B.V. and Quantib B.V |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill from acquisitions |  |  |  |  |  |  |  | $ 7,300,000 |  |  |  |  |  |  |  |  |  |  |  |
Quantib B.V |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | $ 22,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Milestone contingent consideration |  |  |  |  |  | $ 8,437,000 |  | $ 8,437,000 |  | 10,459,000 |  |  | 10,459,000 |  |  | $ 10,268,000 |  |  |  |
Contingent consideration, liability, period |  | 18 months |  |  |  |  |  | 18 months |  |  |  |  |  |  |  |  |  |  |  |
Additional number of shares issued (in shares) | shares |  | 113,303 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of additional shares issued after execution |  | $ 3,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aidence Holding B.V. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration (up to) |  | $ 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of identified milestones | milestone |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Milestone contingent consideration |  | $ 7,400,000 |  |  |  | 6,700,000 |  | $ 6,700,000 |  |  |  |  |  |  |  |  |  |  |  |
Chance of FDA approval, percent |  | 80.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred financing costs, net of accumulated amortization |  |  |  |  |  | 1,900,000 |  | $ 1,900,000 |  |  |  |  |  |  |  |  |  |  |  |
Forecast |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Monthly amortization of deferred hedge gains |  |  |  |  |  |  |  |  |  |  |  | $ 300,000 |  | $ 400,000 |  |  |  |  |  |
2019 SWAPS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of forward interest rate cap agreements | agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 |
Notional amounts |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 500,000,000 |
2019 SWAPS | 2019 Swaps - Interest Rate Contracts |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amounts |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 100,000,000 |
2019 SWAPS | 2019 Swaps - Interest Rate Contracts | London Interbank Offered Rate (LIBOR) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.96% |
2019 SWAPS | October 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of forward interest rate cap agreements | agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |
Notional amounts |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 50,000,000 |
2019 SWAPS | October 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amounts |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 200,000,000 |
2019 SWAPS | 2019 Swaps - Interest Rate Contracts |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amounts |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 400,000,000 |
2019 SWAPS | 2019 Swaps - Interest Rate Contracts | London Interbank Offered Rate (LIBOR) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.05% |
Restated Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares authorized (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 16,500,000 |  |  |
Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based payment award, award vesting period |  |  |  |  |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |
Share-based payment award, expiration period |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |
Minimum | Dignity Health | Joint Venture | Glendale Advanced Imaging |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable interest entity, ownership percentage |  |  |  |  |  |  |  | 35.00% |  |  |  |  |  |  |  |  |  |  |  |
Minimum | Amounts returned to property and equipment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
PPE estimated useful lives |  |  |  |  |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |
Minimum | Leasehold Improvements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
PPE estimated useful lives |  |  |  |  |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based payment award, award vesting period |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |
Share-based payment award, expiration period |  |  |  |  |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Dignity Health | Joint Venture | Glendale Advanced Imaging |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Variable interest entity, ownership percentage |  |  |  |  |  |  |  | 55.00% |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Amounts returned to property and equipment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
PPE estimated useful lives |  |  |  |  |  |  |  | 15 years |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Leasehold Improvements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
PPE estimated useful lives |  |  |  |  |  |  |  | 15 years |  |  |  |  |  |  |  |  |  |  |  |
First Lien Credit Agreement | Revolving Credit Facility | Barclays | Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total credit facilities outstanding |  |  |  |  |  | 0 |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |
COVID-19 Pandemic |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Advance medicare payments |  |  |  |  |  |  |  |  |  | 100,000 | $ 39,500,000 |  | 39,600,000 |  |  |  |  |  |  |
Proceeds from provider relief funding |  |  |  |  |  |  | $ 43,000 |  | $ 6,300,000 | $ 9,100,000 | $ 26,300,000 |  | $ 35,400,000 |  |  |  |  |  |  |
Repayment of advance medicare payments |  |  |  |  |  |  |  | 38,600,000 |  |  |  |  |  |  |  |  |  |  |  |
Refundable claim percentage |  |  |  |  |  |  |  |  |  | 50.00% | 50.00% |  | 50.00% |  |  |  |  |  |  |
Deferred social security taxes |  |  |  |  |  | $ 8,100,000 |  | $ 8,100,000 |  |  | $ 16,300,000 |  |  |  |  |  |  |  |  |
Reduction in deferred social security taxes |  |  |  |  |  |  |  |  |  | $ 7,700,000 |  |  |  |  |  |  |  |  |  |
COVID-19 Pandemic | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Refundable claim percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  |
COVID-19 Pandemic | Paycheck Protection Program loans at 1% due April 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from PPP loans |  |  |  |  |  |  |  |  |  |  | $ 4,000,000 |  |  |  |  |  |  |  |  |

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- Definition For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c)(3) -URI https://asc.fasb.org/extlink&oid=126975305&loc=d3e6927-128479 + Details
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- Definition Amount of liability recognized arising from contingent consideration in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=126975305&loc=d3e6927-128479 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 35 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126966325&loc=d3e6819-128478 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 + Details
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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- Definition Total amount of gain (loss) derived from fair value hedges recognized in earnings in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959 + Details
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- Definition The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585 + Details
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