The Company maintains an allowance for credit losses at an amount sufficient to absorb losses inherent in the existing accounts receivable portfolio as of the reporting dates based on the estimate of expected net credit losses. The following table provides activity in the allowance for credit losses for the nine months ended September 30, 2020:


Allowance for credit losses, January 1, 2020	$	615
Provision for expected credit losses ⁽¹⁾		288
Write-offs charged against allowance		(74	)
Recoveries of amounts previously written off		—
Foreign currency translation adjustment		(3	)
Allowance for credit losses, September 30, 2020	$	826
Accounts receivable balance before allowance for credit losses and provision for sales returns, September 30, 2020	$	26,843

The Company holds investments in two available-for-sale debt securities, one of which is in an unrealized loss position. The unrealized loss relates to an investment in the convertible debentures of a recreational cannabis company. This investment is deemed not to have a credit loss. The unrealized loss primarily reflects an extended period of general volatility in the cannabis industry, as well

as the more recent volatility in the overall economy due to COVID-19. The Company expects to recover the entire amortized cost basis of the security. The Company does not intend to sell the investment and it is not more likely than not that the Company will be required to sell the investment before recovery of its amortized cost basis. The following table provides the fair value and unrealized loss of the investment at September 30, 2020 and December 31, 2019:

	September 30, 2020		December 31, 2019
Fair value	$	1,124	$	945
Unrealized loss	$	148	$	302