Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2018

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data

The following is a summary of quarterly financial data for the years ended December 31, 2018 and 2017:

(in thousands, except for per share amounts)	First Quarter			Second Quarter			Third Quarter			Fourth Quarter
Year Ended December 31, 2018
Revenues	$	43,592		$	47,350		$	49,135		$	53,041
Gross profit (1)	38,680			41,739			43,670			46,994
Income from operations	2,442			3,913			6,233			9,150
Net income	3,066			4,611			7,171			10,360
Net income per share, basic	$	0.07		$	0.09		$	0.14		$	0.20
Net income per share, diluted	$	0.06		$	0.09		$	0.13		$	0.19
Year Ended December 31, 2017
Revenues	$	37,415		$	42,056		$	41,336		$	44,276
Gross profit (1)	32,958			37,095			36,379			39,053
Loss from operations	(7,906		)	(1,924		)	(4,923		)	(2,150		)
Net loss	(7,645		)	(1,534		)	(4,550		)	(1,838		)
Net loss per share, basic and diluted	$	(0.17	)	$	(0.03	)	$	(0.10	)	$	(0.04	)

(1) Gross profit includes revenues less cost of goods sold, excluding amortization, and less intangible asset amortization.