PREPAIDS AND OTHER ASSETS (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid maintenance	$ 9,156,000	$ 6,577,000
Other current assets	8,365,000	6,199,000
Prepaid Insurance	4,274,000	4,241,000
Other Prepaid Expense, Current	3,234,000	4,434,000
Prepaid inventories	245,000	0
Prepaid advertising	155,000	138,000
Total prepaids and other current assets	$ 25,429,000	$ 21,589,000