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SIGNIFICANT ACCOUNTING POLICIES (Details - Revenue) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Revenue from External Customer [Line Items] |  |
Service fee revenue, net of contractual allowances and discounts | $ 315,319 | $ 281,564
Total service revenue | 315,319 | 281,564
Commercial insurance |  |
Revenue from External Customer [Line Items] |  |
Service fee revenue, net of contractual allowances and discounts | 182,096 | 155,461
Medicare |  |
Revenue from External Customer [Line Items] |  |
Service fee revenue, net of contractual allowances and discounts | 63,589 | 57,749
Medicaid |  |
Revenue from External Customer [Line Items] |  |
Service fee revenue, net of contractual allowances and discounts | 8,451 | 6,628
Workers' compensation/personal injury |  |
Revenue from External Customer [Line Items] |  |
Service fee revenue, net of contractual allowances and discounts | 10,399 | 10,274
Other patient revenue |  |
Revenue from External Customer [Line Items] |  |
Service fee revenue, net of contractual allowances and discounts | 4,775 | 5,662
Management fee revenue |  |
Revenue from External Customer [Line Items] |  |
Service fee revenue, net of contractual allowances and discounts | 5,219 | 2,567
Teleradiology and Software revenue |  |
Revenue from External Customer [Line Items] |  |
Service fee revenue, net of contractual allowances and discounts | 2,426 | 3,770
Other |  |
Revenue from External Customer [Line Items] |  |
Service fee revenue, net of contractual allowances and discounts | 2,622 | 6,222
Service fee revenue |  |
Revenue from External Customer [Line Items] |  |
Service fee revenue, net of contractual allowances and discounts | 279,577 | 248,333
Revenue under capitation arrangements |  |
Revenue from External Customer [Line Items] |  |
Service fee revenue, net of contractual allowances and discounts | $ 35,742 | $ 33,231

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