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REVENUE RECOGNITION (Tables)

9 Months Ended

Sep. 30, 2020

Revenue from Contract with Customer [Abstract]

Schedule of Timing of Performance Obligation

The Company's typical performance obligations include the following:

Performance Obligation

When Performance Obligation is Typically Satisfied

When Payment is Typically Due

Software and Product Revenue

Software licenses (perpetual or term)

Upon transfer of control; typically, when made available for download (point in time)

Generally, within 30 days of invoicing except for term licenses, which may be paid for over time

Software licenses (subscription)

Upon activation of hosted site (over time)

Generally, within 30 days of invoicing

Appliances

When control of the appliance passes to the customer; typically, upon delivery (point in time)

Generally, within 30 days of invoicing

Software upgrades

Upon transfer of control; typically, when made available for download (point in time)

Generally, within 30 days of invoicing

Customer Support Revenue

Customer support

Ratably over the course of the support contract (over time)

Generally, within 30 days of invoicing

Professional Services

Other professional services (excluding training services)

As work is performed (over time)

Generally, within 30 days of invoicing (upon completion of services)

Training

When the class is taught (point in time)

Generally, within 30 days of services being performed

Disaggregation of Revenue

The Company's revenue for the three and nine months ended September 30, 2020 and 2019 was disaggregated as follows:

Three months ended September 30, 2020			Product revenue						Service revenue (maintenance)						Service revenue (professional services)						Total revenue
United States			$	57,503					$	33,275					$	14,072					$	104,850
Europe, Middle East and Africa			41,265						19,720						7,133						68,118
Asia Pacific			22,233						12,208						5,183						39,624
Other			7,925						8,439						2,162						18,526
			$	128,926					$	73,642					$	28,550					$	231,118

Three months ended September 30, 2019			Product revenue						Service revenue (maintenance)						Service revenue (professional services)						Total revenue
United States			$	44,701					$	32,709					$	10,113					$	87,523
Europe, Middle East and Africa			7,346						10,899						2,635						20,880
Asia Pacific			5,517						7,123						3,219						15,859
Other			3,588						8,170						1,633						13,391
			$	61,152					$	58,901					$	17,600					$	137,653

Nine months ended September 30, 2020			Product revenue						Service revenue (maintenance)						Service revenue (professional services)						Total revenue
United States			$	150,980					$	98,392					$	35,482					$	284,854
Europe, Middle East and Africa			97,431						54,042						15,920						167,393
Asia Pacific			59,030						26,742						14,017						99,789
Other			18,246						24,157						5,154						47,557
			$	325,687					$	203,333					$	70,573					$	599,593

Nine months ended September 30, 2019			Product revenue						Service revenue (maintenance)						Service revenue (professional services)						Total revenue
United States			$	114,525					$	99,281					$	26,919					$	240,725
Europe, Middle East and Africa			32,215						31,016						8,699						71,930
Asia Pacific			23,217						20,272						7,747						51,236
Other			10,734						22,462						4,915						38,111
			$	180,691					$	173,031					$	48,280					$	402,002

The Company's product revenue from indirect sales through its channel partner program and from its direct sales program for the three and nine months ended September 30, 2020 and 2019 was as follows (in thousands):

			Three months ended												Nine months ended
			September 30, 2020						September 30, 2019						September 30, 2020						September 30, 2019
Indirect sales through channel partner program			$	36,586					$	21,537					$	97,839					$	69,380
Direct sales			92,340						39,615						227,848						111,311
			$	128,926					$	61,152					$	325,687					$	180,691

The Company's product revenue from sales to enterprise customers and from sales to service provider customers for the three and nine months ended September 30, 2020 and 2019 was as follows (in thousands):

			Three months ended												Nine months ended
			September 30, 2020						September 30, 2019						September 30, 2020						September 30, 2019
Sales to enterprise customers			$	36,937					$	17,458					$	100,168					$	47,295
Sales to service provider customers			91,989						43,694						225,519						133,396
			$	128,926					$	61,152					$	325,687					$	180,691

Schedule of Customer Assets and Liabilities

The changes in the Company's accounts receivable, unbilled receivables and deferred revenue balances for the nine months ended September 30, 2020 were as follows (in thousands):

			Accounts receivable						Unbilled accounts receivable						Deferred revenue (current)						Deferred revenue (long-term)
Balance at January 1, 2020			$	168,502					$	24,204					$	100,406					$	20,482
Increase (decrease), net			(14,990)						30,097						(6,959)						803
Balance at September 30, 2020			$	153,512					54,301						$	93,447					$	21,285

X

- Definition

Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045

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X

- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045

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X

- Definition

Tabular disclosure of expected timing for satisfying remaining performance obligation.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130556-203045

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