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Creator Signing Fees, Net (Tables)
12 Months Ended
Dec. 31, 2019
Revenue from Contract with Customer [Abstract]  
Summary of the Activity in Creator Signing Fees The following table summarizes the activity in creator signing fees for the periods indicated (in thousands):
December 31,
20192018
Balance, beginning of period $17,005  $10,421  
Creator signing fees paid 21,216  15,973  
Amortization of creator signing fees (10,858) (7,086) 
Write-offs and other adjustments (1,056) (2,303) 
Balance, end of period $26,307  $17,005  
Creator signing fees, net $9,597  $7,324  
Creator signing fees, noncurrent 16,710  9,681