Selected Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2021

Quarterly Financial Information Disclosure [Abstract]

Selected Quarterly Financial Data (Unaudited)

Selected Quarterly Financial Data (Unaudited)

Selected quarterly financial information for 2021 and 2020 is as follows:

	Quarter Ended
	Dec. 31, 2021		Sept. 30, 2021		Jun. 30, 2021		Mar. 31, 2021		Dec. 31, 2020		Sept. 30, 2020		Jun. 30, 2020		Mar. 31, 2020
	(unaudited, in thousands, except per share data)
Revenue	$	173,599	$	154,328	$	143,782	$	137,882	$	127,885	$	112,143	$	99,792	$	95,088
Cost of revenue (1)(2)	79,764		67,137		64,395		59,803		51,233		46,561		42,453		40,037
Gross profit	93,835		87,191		79,387		78,079		76,652		65,582		57,339		55,051
Operating expenses:
Research and development (1)(2)	30,448		29,680		24,648		22,121		18,676		17,674		17,208		15,189
Sales and marketing (1)(2)	53,394		49,712		46,024		44,799		37,053		32,969		32,231		30,160
General and administrative (1)(2)	21,972		26,790		22,909		22,245		18,258		16,724		16,129		14,658
Total operating expenses	105,814		106,182		93,581		89,165		73,987		67,367		65,568		60,007
(Loss) income from operations	(11,979)		(18,991)		(14,194)		(11,086)		2,665		(1,785)		(8,229)		(4,956)
Other (expense) income, net:
Interest expense	(2,024)		(1,947)		(2,118)		(1,938)		(9,481)		(9,649)		(5,734)		(3,484)
Loss on early extinguishment of debt	—		—		—		—		(887)		(282)		(5,794)		—
Other (expense) and interest income	(43)		213		(353)		175		501		631		829		1,072
Total other (expense) income, net	(2,067)		(1,734)		(2,471)		(1,763)		(9,867)		(9,300)		(10,699)		(2,412)
Loss before income taxes	(14,046)		(20,725)		(16,665)		(12,849)		(7,202)		(11,085)		(18,928)		(7,368)
(Benefit from) provision for income taxes	(10,445)		(188)		(135)		(517)		8		346		(2,876)		69
Net loss	$	(3,601)	$	(20,537)	$	(16,530)	$	(12,332)	$	(7,210)	$	(11,431)	$	(16,052)	$	(7,437)
Net loss per share:
Basic	$	(0.05)	$	(0.30)	$	(0.25)	$	(0.18)	$	(0.11)	$	(0.17)	$	(0.25)	$	(0.12)
Diluted	$	(0.05)	$	(0.30)	$	(0.25)	$	(0.18)	$	(0.11)	$	(0.17)	$	(0.25)	$	(0.12)
Shares used in computing net loss per share:
Basic	68,207		67,800		67,292		66,721		66,133		65,460		63,282		61,705
Diluted	68,207		67,800		67,292		66,721		66,133		65,460		63,282		61,705

(1) Included stock-based compensation as follows:

	Quarter Ended
	Dec. 31, 2021		Sept. 30, 2021		Jun. 30, 2021		Mar. 31, 2021		Dec. 31, 2020		Sept. 30, 2020		Jun. 30, 2020		Mar. 31, 2020
	(unaudited, in thousands)
Cost of revenue	$	6,854	$	3,994	$	3,781	$	3,105	$	2,331	$	2,603	$	2,499	$	1,989
Research and development	9,163		9,101		6,152		4,763		3,674		3,876		3,684		2,806
Sales and marketing	11,987		8,304		8,208		6,771		5,366		5,427		5,265		4,106
General and administrative	7,597		5,996		6,760		6,269		5,505		5,380		5,343		4,893
Total stock-based compensation	$	35,601	$	27,395	$	24,901	$	20,908	$	16,876	$	17,286	$	16,791	$	13,794

(2) Included depreciation and amortization expenses as follows:

	Quarter Ended
	Dec. 31, 2021		Sept. 30, 2021		Jun. 30, 2021		Mar. 31, 2021		Dec. 31, 2020		Sept. 30, 2020		Jun. 30, 2020		Mar. 31, 2020
	(unaudited, in thousands)
Cost of revenue	$	8,301	$	7,658	$	7,825	$	7,087	$	5,948	$	5,171	$	5,120	$	3,940
Research and development	948		1,004		729		596		488		512		497		465
Sales and marketing	1		1		1		1		2		1		2		2
General and administrative	1,288		1,117		1,096		1,079		899		853		624		563
Total depreciation and amortization	$	10,538	$	9,780	$	9,651	$	8,763	$	7,337	$	6,537	$	6,243	$	4,970