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Other Current Liabilities (Tables)
 12 Months Ended
Dec. 31, 2020
Other Liabilities, Current [Abstract]  
Other Current Liabilities Other current liabilities at December 31, 2020 and December 31, 2019 consisted of the following:
20202019
 (In thousands)
Acquisition obligations (contingent consideration)$2,443 $6,762 
Customer advances (deposits)25,043 22,573 
Total$27,486 $29,335