Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue
Revenue	$ 229,440	$ 231,991	$ 448,631	$ 455,612
Cost of revenue
Cost of revenue	108,070	104,939	211,455	209,804
Gross profit	121,370	127,052	237,176	245,808
Operating expenses
Sales, marketing and customer success	45,452	51,954	94,245	110,689
Research and development	30,222	24,895	59,401	49,872
General and administrative	32,008	29,842	62,595	55,697
Amortization	567	729	1,116	1,470
Restructuring	78	50	132	74
Total operating expenses	108,327	107,470	217,489	217,802
Income from operations	13,043	19,582	19,687	28,006
Interest expense	(5,054)	(3,893)	(10,168)	(8,052)
Other income (expense), net	487	630	(523)	1,700
Income before provision for income taxes	8,476	16,319	8,996	21,654
Income tax provision	1,745	4,496	2,429	5,192
Net income	$ 6,731	$ 11,823	$ 6,567	$ 16,462
Earnings per share
Basic earnings per share	$ 0.14	$ 0.25	$ 0.14	$ 0.34
Diluted earnings per share	$ 0.14	$ 0.24	$ 0.14	$ 0.34
Common shares and equivalents outstanding
Basic weighted average shares	47,756,326	48,239,928	47,560,847	48,138,125
Diluted weighted average shares outstanding	48,444,874	48,418,378	48,444,658	48,465,077
Other comprehensive income (loss)
Foreign currency translation adjustment	$ 1,783	$ (887)	$ 4,294	$ (6,615)
Unrealized gain (loss) on derivative instruments, net of tax	345	551	4,494	(2,571)
Total other comprehensive income (loss)	2,128	(336)	8,788	(9,186)
Comprehensive income	8,859	11,487	15,355	7,276
Recurring [Member]
Revenue
Revenue	216,986	216,260	423,736	421,127
Cost of revenue
Cost of revenue	94,435	91,370	183,300	180,921
One-time services and other [Member]
Revenue
Revenue	12,454	15,731	24,895	34,485
Cost of revenue
Cost of revenue	$ 13,635	$ 13,569	$ 28,155	$ 28,883