Revenue (Tables)

12 Months Ended

Sep. 30, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

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

	Fiscal years ended September 30,
($ in thousands)	2019		2018 (as adjusted)*		2017 (as adjusted)*
North America, primarily the United States	$	184,022	$	161,924	$	117,455
Europe, Middle East & Africa	39,896		39,211		39,403
Rest of world	30,285		25,758		24,482
Total revenue	$	254,203	$	226,893	$	181,340

*Prior period information has been restated for the adoption of ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606),” which we adopted on October 1, 2018.

11. REVENUE (CONTINUED)

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

	Fiscal years ended September 30,
($ in thousands)	2019		2018 (as adjusted)*		2017 (as adjusted)*
Transferred at a point in time	$	231,387	$	212,448	$	176,567
Transferred over time	22,816		14,445		4,773
Total revenue	$	254,203	$	226,893	$	181,340

*Prior period information has been restated for the adoption of ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606),” which we adopted on October 1, 2018.

Contract with Customer, Asset and Liability

Changes in unearned revenue were:

	Fiscal year ended September 30,
($ in thousands)	2019
Unearned revenue, beginning of period*	$	3,933
Billings	43,071
Revenue recognized	(41,979		)
Unearned revenue, end of period	$	5,025

*Prior period information has been restated for the adoption of ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606),” which we adopted on October 1, 2018.