CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenue:
Revenue	$ 54,418	$ 32,731	$ 146,960	$ 90,145
Cost of revenue, exclusive of depreciation and amortization shown below:
Cost of revenue, exclusive of depreciation and amortization	35,058	23,465	99,132	64,088
Operating expenses:
Research and development	3,380	1,527	8,515	4,037
Sales and marketing	2,669	1,325	6,985	3,869
General and administrative	7,824	4,098	20,229	16,097
Change in fair value of acquisition-related contingent consideration (income) expense	(8,419)	923	40,385	960
Depreciation and amortization	4,096	2,166	12,110	5,730
Total operating expenses	9,550	10,039	88,224	30,693
Income (loss) from operations	9,810	(773)	(40,396)	(4,636)
Other expense:
Interest expense	232	174	415	327
Total other expense	232	174	415	327
Income (loss) before income taxes	9,578	(947)	(40,811)	(4,963)
Income tax (benefit) expense	(838)	(7,112)	(4,107)	(6,852)
Net income (loss)	10,416	6,165	(36,704)	1,889
Net income (loss) attributable to common stockholders
Basic	10,416	6,165	(36,704)	1,889
Diluted	$ 10,416	$ 6,165	$ (36,704)	$ 1,889
Net income (loss) per share attributable to common stockholders:
Basic (in dollars per share)	$ 0.54	$ 0.37	$ (1.93)	$ 0.11
Diluted (in dollars per share)	$ 0.47	$ 0.33	$ (1.93)	$ 0.10
Weighted average common shares outstanding:
Basic (in shares)	19,217,623	16,699,102	18,989,334	16,483,169
Diluted (in shares)	22,288,873	18,646,031	18,989,334	18,411,800
Product
Revenue:
Revenue	$ 28,045	$ 23,780	$ 82,603	$ 68,995
Cost of revenue, exclusive of depreciation and amortization shown below:
Cost of revenue, exclusive of depreciation and amortization	21,100	18,418	62,007	53,151
Service
Revenue:
Revenue	26,373	8,951	64,357	21,150
Cost of revenue, exclusive of depreciation and amortization shown below:
Cost of revenue, exclusive of depreciation and amortization	$ 13,958	$ 5,047	$ 37,125	$ 10,937