UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue
Total revenue	$ 325,702	$ 227,375	$ 639,201	$ 492,966
Cost of revenue
Total cost of revenue	84,531	76,691	166,978	156,219
Gross profit	241,171	150,684	472,223	336,747
Operating expenses
Selling and marketing	156,423	127,607	305,162	263,631
Research and development	64,395	58,869	126,837	117,596
General and administrative	19,161	15,655	37,431	31,285
Total operating expenses	239,979	202,131	469,430	412,512
Income (loss) from operations	1,192	(51,447)	2,793	(75,765)
Foreign currency transaction (loss) gain	(403)	4,256	(5,501)	(1,691)
Interest income	236	242	389	849
Interest expense	(1,959)	(5,529)	(3,839)	(7,835)
Gain on capped call transactions	26,309	19,419	7,192	827
Other income, net	0	0	106	1,374
Income (loss) before (benefit from) income taxes	25,375	(33,059)	1,140	(82,241)
(Benefit from) income taxes	(11,916)	(12,319)	(29,534)	(36,129)
Net income (loss)	$ 37,291	$ (20,740)	$ 30,674	$ (46,112)
Earnings (loss) per share
Basic (in dollars per share)	$ 0.46	$ (0.26)	$ 0.38	$ (0.58)
Diluted (in dollars per share)	$ 0.43	$ (0.26)	$ 0.36	$ (0.58)
Weighted-average number of common shares outstanding
Basic (in shares)	81,316	80,224	81,161	80,016
Diluted (in shares)	90,320	80,224	86,006	80,016
Software license
Revenue
Total revenue	$ 116,892	$ 53,323	$ 233,853	$ 147,239
Cost of revenue
Total cost of revenue	656	979	1,306	1,663
Maintenance
Revenue
Total revenue	78,782	72,222	154,343	145,917
Cost of revenue
Total cost of revenue	4,995	5,591	10,781	11,167
Pega Cloud
Revenue
Total revenue	73,293	48,838	141,151	92,304
Cost of revenue
Total cost of revenue	24,051	18,988	46,608	36,521
Consulting
Revenue
Total revenue	56,735	52,992	109,854	107,506
Cost of revenue
Total cost of revenue	$ 54,829	$ 51,133	$ 108,283	$ 106,868