Selected Quarterly Financial Data (unaudited)

12 Months Ended

Dec. 31, 2019

Selected summarized quarterly financial information for the years ended 2019 and 2018 is as follows:



	Three Months Ended
	March 31, 2018			June 30, 2018			September 30, 2018			December 31, 2018			March 31, 2019			June 30, 2019			September 30, 2019			December 31, 2019
Revenues	$	54,808		$	58,574		$	60,541		$	67,177		$	71,296		$	77,646		$	79,702		$	86,840
Cost of revenues	26,977			29,303			30,140			35,435			37,184			40,052			40,447			44,802
Gross profit	27,831			29,271			30,401			31,742			34,112			37,594			39,255			42,038
Operating expenses:
Sales and marketing	10,966			12,108			11,467			13,583			15,805			15,866			15,700			16,576
Research and development	11,157			11,756			12,904			15,517			17,657			19,118			19,617			19,881
General and administrative	10,296			10,798			11,237			12,659			13,860			14,079			13,418			15,382
Acquisition related costs	256			258			1,811			1,820			2,718			1,977			2,758			8,574
Amortization of acquired intangibles	368			368			251			857			1,215			905			912			3,307
Unoccupied lease charges	—			658			—			—			—			—			244			176
Total operating expenses	33,043			35,946			37,670			44,436			51,255			51,945			52,649			63,896
Loss from operations	(5,212		)	(6,675		)	(7,269		)	(12,694		)	(17,143		)	(14,351		)	(13,394		)	(21,858		)
Total other income (expense), net	(1,023		)	(2,105		)	(1,877		)	(2,345		)	(2,207		)	(3,217		)	(5,206		)	(5,988		)
Loss before income taxes	(6,235		)	(8,780		)	(9,146		)	(15,039		)	(19,350		)	(17,568		)	(18,600		)	(27,846		)
Benefit from income taxes	187			153			287			3,176			39			237			31			12,180
Net loss	$	(6,048	)	$	(8,627	)	$	(8,859	)	$	(11,863	)	$	(19,311	)	$	(17,331	)	$	(18,569	)	$	(15,666	)
Net loss per common share, basic and diluted	$	(0.14	)	$	(0.20	)	$	(0.21	)	$	(0.27	)	$	(0.44	)	$	(0.39	)	$	(0.39	)	$	(0.32	)