SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Impairment of Long-lived Assets (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2021 |
Jun. 30, 2020 |
Jun. 30, 2021 |
Jun. 30, 2020 |
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| Impairment of Long-lived Assets [Abstract] | ||||
| Impairment of long-lived assets | $ 0 | $ 0 | $ 0 | $ 0 |
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- References No definition available.
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- Definition The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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