| Cover | Aug. 06, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K/A |
| Amendment Flag | true |
| Amendment Description | This Amendment No. 1 (the “Amendment”) amends the Current Report on Form 8-K filed by Pacira BioSciences, Inc. on August 6, 2020 (the “Original Report”). The sole purpose of the Amendment is to correct a typographical error in Exhibit 99.1 to the Original Report, which incorrectly included $8.2 million of long-term investments in cash, cash equivalents and short-term investments as of June 30, 2020 in the condensed consolidated balance sheets included in Exhibit 99.1. Exhibit 99.1 furnished with this Amendment reflects the corrected amount. No other revisions have been made to the Original Report or the Exhibit 99.1 that was furnished with the Original Report. |
| Document Period End Date | Aug. 6, 2020 |
| Entity File Number | 001-35060 |
| Entity Registrant Name | PACIRA BIOSCIENCES, INC. |
| Entity Central Index Key | 0001396814 |
| Entity Tax Identification Number | 51-0619477 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 5 Sylvan Way |
| Entity Address, Address Line Two | Suite 300 |
| Entity Address, City or Town | Parsippany |
| Entity Address, State or Province | NJ |
| Entity Address, Postal Zip Code | 07054 |
| City Area Code | 973 |
| Local Phone Number | 254-3560 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $0.001 per share |
| Trading Symbol | PCRX |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
