Revenue (Tables)

3 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table summarizes our revenue by geographic location of our customers (in thousands):

	Three months ended December 31,
	2021		2020
North America, primarily the United States	$	66,243	$	54,018
Europe, Middle East & Africa	10,159		10,536
Rest of world	7,855		8,592
Total revenue	$	84,257	$	73,146

The following table summarizes our revenue by the timing of revenue recognition (in thousands):

	Three months ended December 31,
	2021		2020
Transferred at a point in time	$	66,535	$	64,188
Transferred over time	17,722		8,958
Total revenue	$	84,257	$	73,146

Contract with Customer, Asset and Liability

Changes in unearned revenue were (in thousands):

	Three months ended December 31,
	2021		2020
Unearned revenue, beginning of period	$	15,488	$	9,341
Unearned revenue assumed from Ventus acquisition	2,100		—
Billings	27,181		14,267
Revenue recognized	(20,459)		(10,542)
Unearned revenue, end of period	$	24,310	$	13,066