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Other Current Assets and Other Long-Term Assets (Tables)
12 Months Ended
Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Schedule of Other Current Assets Other current assets consisted of the following (in thousands):
December 31,
 20202019
Prepaid expenses$8,158 $5,672 
Deposits and other receivables3,075 2,119 
Interest receivables2,304 1,566 
$13,537 $9,357