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Receivables
12 Months Ended
Dec. 31, 2020
Receivables [Abstract]  
Receivables Receivables
Receivables as of December 31, 2020 and 2019 are as follows:
(in thousands)20202019
Receivables
Trade$87,048 $79,286 
Other8,939 8,773 
Unbilled Receivables21,187 20,911 
Total Receivables117,174 108,970 
Less Allowance for Credit Losses3,215 1,339 
Receivables, net of allowance for credit losses$113,959 $107,631 
The following is a summary of activity in the allowance for credit losses for the years ended December 31, 2020 and 2019:
(in thousands)20202019
Beginning Balance$1,339 $1,407 
Additions Charged to Expense3,138 986 
Reductions for Amounts Written-Off, Net of Recoveries(1,262)(1,054)
Ending Balance$3,215 $1,339