Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2018

Revenue from Contract with Customer [Abstract]

Schedule of Deferred Revenues and Contract Balances

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



	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	(640		)	823		11,812		2,131
Ending Balance as of June 30, 2018	$	29,702		$	8,407	$	47,375	$	2,131

As of June 30, 2018, the Company expects to recognize the long term performance obligations in 2019.

The increase in the deferred revenue balance for the six months ended June 30, 2018 is primarily driven by cash payments received or due in advance of satisfying its performance obligations, partially offset by $26.2 million of revenues recognized that were included in the deferred revenue balance as of December 31, 2017. The following table presents deferred revenue by revenue source (amounts in thousands):



	Deferred Revenue
	As of June 30, 2018		As of December 31, 2017
Hosted services – Business	$	38,063	$	27,011
Hosted services – Consumer	—		—
Professional services	11,443		8,552
Total deferred revenue	$	49,506	$	35,563

Schedule of Disaggregation of Revenue

The following table presents the Company's revenues disaggregated by revenue source (amounts in thousands):



	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2018		2017		⁽¹⁾	2018		2017		⁽¹⁾
Revenue:
Hosted services – Business	$	48,331	$	43,927		$	95,759	$	85,420
Hosted services – Consumer	4,952		4,460			9,632		8,630
Professional services	8,377		5,687			14,510		10,943
Total revenue	$	61,660	$	54,074		$	119,901	$	104,993
⁽¹⁾As noted above, prior period amounts have not been adjusted under the modified retrospective method.

Schedule of Revenue by Geographic Region

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



	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2018		2017		2018		2017
United States	$	35,572	$	34,078	$	69,643	$	65,763
Other Americas ⁽¹⁾	2,547		1,968		3,806		3,940
Total Americas	38,119		36,046		73,449		69,703
EMEA ^{(2) (4)}	17,519		13,953		34,438		27,465
APAC ⁽³⁾	6,022		4,075		12,014		7,825
Total revenue	$	61,660	$	54,074	$	119,901	$	104,993

⁽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 $11.9 million and $9.1 million for the three months ended June 30, 2018 and 2017, respectively, and $23.5 million and $18.2 million six months ended June 30, 2018 and 2017, respectively.