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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
General and administrative expenses $ 6,166 $ 4,878
General and Administrative Expense [Member]    
General and administrative expenses 5,716 4,546
Non Cash Stock Compensation Expense [Member]    
Non-cash stock based compensation credit $ 450 $ 332