CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock	Paid-in Capital	Accumulated Other Comprehensive (Loss)/Income	Accumulated Deficit	Noncontrolling Interests
Balance (in shares) at Dec. 31, 2016		28,261,503
Balance at Dec. 31, 2016	$ 138,914	$ 28	$ 281,642	$ (34)	$ (142,722)	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share issuances related to stock compensation plans (in shares)		722,441
Share issuances related to stock compensation plans	6,071	$ 0	6,071
Stock-based compensation	7,680		7,680
Shares withheld to cover taxes on vesting of share based awards (shares)		(79,589)
Shares withheld to cover taxes on vesting of share based awards	(1,933)		(1,933)
Issuance of stock related to business combinations (shares)		3,615,840
Issuance of stock related to business combinations (value)	128,016	$ 4	116,788			11,224
Acquisition of noncontrolling interest (shares)		19,806
Acquisition of noncontrolling interest	(9,069)		2,022			(11,091)
Common stock returned to company in legal settlement (in shares)		(79,333)
Common stock returned in legal settlement	(2,753)		(2,753)
Currency translation adjustment	(80)			(80)
Net income/(loss) attributable to BioTelemetry, Inc.	(15,956)
Net income/(loss)	(17,143)				(15,956)	(1,187)
Balance (in shares) at Dec. 31, 2017		32,460,668
Balance at Dec. 31, 2017	249,703	$ 32	409,517	(114)	(158,678)	(1,054)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share issuances related to stock compensation plans (in shares)		972,415
Share issuances related to stock compensation plans	12,186	$ 1	12,185
Stock-based compensation	9,261		9,261
Shares withheld to cover taxes on vesting of share based awards (shares)		(85,505)
Shares withheld to cover taxes on vesting of share based awards	(2,909)		(2,909)
Acquisition of noncontrolling interest (shares)		58,786
Acquisition of noncontrolling interest	0		(2,000)			2,000
Currency translation adjustment	370			370
Net income/(loss) attributable to BioTelemetry, Inc.	42,820
Net income/(loss)	$ 41,874				42,820	(946)
Balance (in shares) at Dec. 31, 2018	33,406,364	33,406,364
Balance at Dec. 31, 2018	$ 310,485	$ 33	426,054	256	(115,858)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share issuances related to stock compensation plans (in shares)		631,107
Share issuances related to stock compensation plans	7,610	$ 1	7,609
Stock-based compensation	13,376		13,376
Shares withheld to cover taxes on vesting of share based awards (shares)		(64,418)
Shares withheld to cover taxes on vesting of share based awards	(4,955)		(4,955)
Issuance of stock related to business combinations (shares)		50,000
Issuance of stock related to business combinations (value)	2,142	$ 0	2,142
Deferred purchase price consideration - equity portion	9,140		9,140
Currency translation adjustment	(725)			(725)
Net income/(loss) attributable to BioTelemetry, Inc.	29,844				29,844
Net income/(loss)	$ 29,844					0
Balance (in shares) at Dec. 31, 2019	34,023,053	34,023,053
Balance at Dec. 31, 2019	$ 366,917	$ 34	$ 453,366	$ (469)	$ (86,014)	$ 0