5. Revenue

Disaggregation of Revenue

Revenue by geographic region, based on the physical location of the customer, is (in thousands):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
				*As Adjusted						*As Adjusted
United States	$	44,790		$	36,613		$	124,586		$	100,339
Foreign		10,449			6,590			28,707			15,881
Total revenue	$	55,239		$	43,203		$	153,293		$	116,220
Percentage of revenue generated outside of the United States		19	%		15	%		19	%		14	%

See Note 1 for a summary of adjustments

Deferred Revenue and Performance Obligations

During the three months ended September 30, 2018, 75% to 85% of revenue recognized was included in our deferred revenue balance at the beginning of the period. During the nine months ended September 30, 2018, 55% to 65% of revenue recognized was included in our deferred revenue balance at the beginning of the period.

Transaction Price Allocated to the Remaining Performance Obligations

As of September 30, 2018, approximately $470 million of revenue is expected to be recognized from remaining performance obligations. We expect to recognize revenue on approximately 69% of these remaining performance obligations over the next 24 months, with the balance recognized thereafter.