Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2018

The following table presents our revenues disaggregated by revenue source (amounts in thousands):



	Three Months Ended
	March 31,
	2018		2017		⁽¹⁾
Revenue:
Hosted services – Business	$	47,427	$	41,493
Hosted services – Consumer	4,680		4,170
Professional services	6,134		5,256
Total revenue	$	58,241	$	50,919
⁽¹⁾As noted above, prior period amounts have not been adjusted under the modified retrospective method.

The following table presents the Company’s revenues attributable to domestic and foreign operations for the periods presented (amounts in thousands):

⁽¹⁾ Canada, Latin America and South America

⁽²⁾ Europe, the Middle East and Africa (“EMEA”)

⁽³⁾ Asia-Pacific (“APAC”)

⁽⁴⁾ Includes revenues from the United Kingdom of $11.7 million and $9.0 million for the three months ended March 31, 2018 and 2017, respectively.

The opening and closing balances of the Company's accounts receivable, unbilled receivables, and deferred revenues are as follows:



	Accounts Receivable	Unbilled Receivable		Deferred Revenue (current)	Deferred Revenue (long term)
Opening Balance as of December 31, 2017	30,342	7,584		35,563	—
Increase (decrease), net	8,027	(56	)	16,811	3,110
Ending Balance as of March 31, 2018	38,369	7,528		52,374	3,110

As of March 31, 2018, the Company expects to recognize the long term performance obligations in 2019.