| Document and Entity Information | Mar. 08, 2021 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001129260 |
| Document Type | 8-K |
| Document Period End Date | Mar. 8, 2021 |
| Entity Registrant Name | VOCERA COMMUNICATIONS, INC. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-35469 |
| Entity Tax Identification Number | 94-3354663 |
| Entity Address, Address Line One | 525 Race Street |
| Entity Address, City or Town | San Jose |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 95126 |
| City Area Code | (408) |
| Local Phone Number | 882-5100 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, $0.0003 par value |
| Trading Symbol | VCRA |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
