Description of Business and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Description of Business and Significant Accounting Policies

Schedule of allowance for doubtful accounts

Activity in our allowance for doubtful accounts was as follow (in thousands):

	Balance at		Bad		Write-offs,		Balance at
	Beginning		Debt		Net of		End
	of Period		Expense		Recoveries		of Period
Balance as of December 31, 2019	$	425		—		(13)	$	412
Balance as of December 31, 2018	$	475		199		(249)	$	425
Balance as of December 31, 2017	$	433		149		(107)	$	475

Schedule of changes in deferred commissions

Changes in deferred commissions were as follows (in thousands):

	Year ended
	December 31,
	2019		2018
Balance, beginning of the period	$	17,331	$	18,408
Deferral of commissions earned		18,333		15,312
Recognition of commission expense		(17,364)		(16,240)
Impairment of deferred commissions		(398)		(149)
Balance, end of the period	$	17,902	$	17,331