| Cover Document | Oct. 29, 2020 |
| Cover [Abstract] | |
| Entity Central Index Key | 0001574774 |
| Title of 12(g) Security | Common Stock, par value $0.001 per share |
| Entity Address, Address Line One | 1000 Cedar Hollow Road |
| Entity Incorporation, State or Country Code | DE |
| Document Type | 8-K |
| Document Period End Date | Oct. 29, 2020 |
| Entity Registrant Name | BioTelemetry, Inc. |
| Entity File Number | 000-55039 |
| Entity Tax Identification Number | 46-2568498 |
| Entity Address, City or Town | Malvern, |
| Entity Address, State or Province | PA |
| Entity Address, Postal Zip Code | 19355 |
| City Area Code | 610 |
| Local Phone Number | 729-7000 |
| Written Communications | false |
| Soliciting Material | false |
| Trading Symbol | BEAT |
| Security Exchange Name | NASDAQ |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
