| Cover | Mar. 31, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Mar. 31, 2021 |
| Entity Registrant Name | SeaSpine Holdings Corporation |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-36905 |
| Entity Tax Identification Number | 47-3251758 |
| Entity Address, Address Line One | 5770 Armada Drive |
| Entity Address, City or Town | Carlsbad |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 92008 |
| City Area Code | 760 |
| Local Phone Number | 727-8399 |
| Entity Information, Former Legal or Registered Name | Not Applicable |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | SPNE |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
| Entity Central Index Key | 0001637761 |
