REVENUE

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

REVENUE

13. REVENUE

Geographic revenue

(Dollars in thousands)	2019				2018				2017
U.S.	$	525,191	57	%	$	469,987	52	%	$	505,415	56	%
Other Americas	60,536		7	%	53,239		6	%	41,467		5	%
United Kingdom (“U.K.”)	87,382		10	%	95,628		11	%	97,000		11	%
Europe (excluding U.K.), Middle East, and Africa	137,946		15	%	147,248		17	%	138,752		16	%
Asia-Pacific	100,328		11	%	125,479		14	%	105,833		12	%
	$	911,383	100	%	$	891,581	100	%	$	888,467	100	%

Revenue streams

(in thousands)	2019		2018		2017
Perpetual license	$	80,015	$	109,863	$	132,883
Term license	199,433		178,256		206,411
Revenue recognized at a point in time	279,448		288,119		339,294
Maintenance	280,580		263,875		242,320
Cloud	133,746		82,627		51,097
Consulting	217,609		256,960		255,756
Revenue recognized over time	631,935		603,462		549,173
	$	911,383	$	891,581	$	888,467

(in thousands)	2019		2018		2017
Term license	$	199,433	$	178,256	$	206,411
Cloud	133,746		82,627		51,097
Maintenance	280,580		263,875		242,320
Subscription (1)	613,759		524,758		499,828
Perpetual license	80,015		109,863		132,883
Consulting	217,609		256,960		255,756
Total revenue	$	911,383	$	891,581	$	888,467

⁽¹⁾  Reflects client arrangements (term license, cloud, and maintenance) that are subject to renewal.

Remaining performance obligations ("Backlog")

Expected future revenue on existing contracts:

	December 31, 2019
(Dollars in thousands)	Perpetual license		Term license		Maintenance		Cloud		Consulting		Total
1 year or less	$	2,305	$	97,826	$	206,882	$	165,571	$	20,798	$	493,382	58	%
1-2 years	2,179		12,014		30,291		128,109		1,439		174,032		21	%
2-3 years	—		3,132		17,844		84,788		132		105,896		13	%
Greater than 3 years	—		3,861		13,277		43,702		1,993		62,833		8	%
	$	4,484	$	116,833	$	268,294	$	422,170	$	24,362	$	836,143	100	%

	December 31, 2018
(Dollars in thousands)	Perpetual license		Term license		Maintenance		Cloud		Consulting		Total
1 year or less	$	14,665	$	72,378	$	192,274	$	103,354	$	17,235	$	399,906	63	%
1-2 years	2,343		10,355		10,436		80,214		2,810		106,158		17	%
2-3 years	1,661		1,414		3,644		61,906		940		69,565		11	%
Greater than 3 years	—		233		1,560		53,343		208		55,344		9	%
	$	18,669	$	84,380	$	207,914	$	298,817	$	21,193	$	630,973	100	%

Major clients

Clients accounting for 10% or more of the Company’s total revenue were:

(Dollars in thousands)	2019		2018		2017
Total revenue	$	911,383	$	891,581	$	888,467
Client A	*		*		10		%

*Client accounted for less than 10% of total revenue.