Accounts receivable (Tables)

6 Months Ended

Jun. 30, 2020

Accounts receivable

Schedule of allowance for credit losses related to accounts receivable

	Allowance for
	Credit Losses
	$
Balance as of December 31, 2019	—
Current period provision for expected credit losses	2
Amounts written-off	—
Recoveries of amounts previously written-off	—
Balance as of June 30, 2020	2