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Other Long-Term Assets (Tables)
 9 Months Ended
Sep. 30, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Schedule of Other Assets, Noncurrent
Other long-term assets consist of the following (in thousands):
September 30, 2021December 31, 2020
Cash surrender value of life insurance policies$2,372 $2,327 
Deferred income taxes2,278 2,048 
Installment receivables868 943 
Deferred financing fees463 411 
Investments84 85 
Other112 111 
Other Long-Term Assets$6,177 $5,925