Revenue (Tables)

9 Months Ended

Jun. 30, 2020

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table summarizes our revenue by geographic location of our customers:

	Three months ended June 30,				Nine months ended June 30,
($ in thousands)	2020		2019		2020		2019
North America, primarily the United States	$	52,603	$	43,604	$	157,513	$	138,808
Europe, Middle East & Africa	11,027		9,582		29,428		30,450
Rest of world	6,708		7,980		19,161		19,985
Total revenue	$	70,338	$	61,166	$	206,102	$	189,243

The following table summarizes our revenue by the timing of revenue recognition:

	Three months ended June 30,				Nine months ended June 30,
($ in thousands)	2020		2019		2020		2019
Transferred at a point in time	$	63,674	$	54,452	$	186,739	$	172,640
Transferred over time	6,664		6,714		19,363		16,603
Total revenue	$	70,338	$	61,166	$	206,102	$	189,243

Contract with Customer, Asset and Liability

Changes in unearned revenue were:

($ in thousands)	Nine months ended June 30, 2020
Unearned revenue, beginning of period	$	5,025
Billings	24,810
Revenue recognized	(23,407)
Unearned revenue, end of period	$	6,428