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FACILITY ACQUISITIONS, ASSETS HELD FOR SALE AND DISPOSITIONS (Details - Schedule of Assets and Liabilities Assumed) - USD ($) $ in Thousands | Dec. 31, 2020 | Nov. 01, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Jan. 01, 2018
--- | --- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |  |
Property and Equipment |  |  |  |  | $ 15,000
Goodwill | $ 472,879 |  | $ 441,973 | $ 418,093 |
ZP Atlantic |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Property and Equipment |  | $ 7,931 |  |  |
Right of Use Assets |  | 6,181 |  |  |
Other Assets |  | 62 |  |  |
Intangible Assets |  | 50 |  |  |
Right of Use Liabilities |  | (6,181) |  |  |
Goodwill |  | 828 |  |  |
TOTAL |  | 8,871 |  |  |
ZP Elmhurst |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Property and Equipment |  | 10,681 |  |  |
Right of Use Assets |  | 12,571 |  |  |
Other Assets |  | 75 |  |  |
Intangible Assets |  | 50 |  |  |
Right of Use Liabilities |  | (12,571) |  |  |
Goodwill |  | 1,463 |  |  |
TOTAL |  | $ 12,269 |  |  |

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