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Allowance for credit losses (Tables)
6 Months Ended
Jun. 30, 2020
Credit Loss [Abstract]  
Allowance For Credit Loss
Movements in the allowance for credit losses during the six months ended June 30, 2020 were as follows:
Six Months Ended June 30, 2020
Allowance for credit losses at beginning of period$—  
Cumulative effect due to adoption of new accounting standard30,264  
Current period provision for expected credit losses33,999  
Write-offs charged against the allowance—  
Allowance for credit losses at end of period$64,263