CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Revenue	$ 103,979	$ 94,496
Cost of revenue	39,201	36,448
Gross profit	64,778	58,048
Operating expenses:
General and administrative	27,607	26,719
Sales and marketing	12,440	11,340
Bad debt expense	5,148	4,879
Research and development	3,333	3,289
Other charges	3,070	5,085
Total operating expenses	51,598	51,312
Income from operations	13,180	6,736
Other expense:
Interest expense	(2,482)	(1,890)
Loss on equity method investment	(32)	(139)
Other non-operating (expense)/income, net	(1,054)	187
Total other expense, net	(3,568)	(1,842)
Income before income taxes	9,612	4,894
Benefit from income taxes	2,073	142
Net income	11,685	5,036
Net loss attributable to noncontrolling interest	0	(946)
Net income attributable to BioTelemetry, Inc.	$ 11,685	$ 5,982
Net income per common share attributable to BioTelemetry, Inc.:
Basic (in dollars per share)	$ 0.35	$ 0.18
Diluted (in dollars per share)	$ 0.32	$ 0.17
Weighted average number of common shares outstanding:
Basic (in shares)	33,654	32,570
Dilutive common stock equivalents (in shares)	2,752	2,665
Diluted (in shares)	36,406	35,235