PREPAID EXPENSES AND OTHER CURRENT ASSETS - Narrative (Details)
|6 Months Ended|
Jun. 30, 2021
|Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]|
|Number of office building bays sold | bay||3|
|Gain on sale of office building bays | $||$ 42,378|
Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef