Description of the business: Allowance for credit losses (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($)
Description of the business:
Balance	$ 1,771
Current-period Provision for Expected Credit Losses	1,336
Write offs Charged Against Allowance (Write-offs)	(1,131)
Balance	1,976
Bad debt recoveries	$ 200