| Document and Entity Information Document | Jan. 31, 2020 |
| Cover page. | |
| Document Type | 8-K |
| Document Period End Date | Jan. 31, 2020 |
| Entity Registrant Name | CIRCOR INTERNATIONAL, INC. |
| Entity Central Index Key | 0001091883 |
| Amendment Flag | false |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-14962 |
| Entity Tax Identification Number | 04-3477276 |
| Entity Address, Address Line One | 30 CORPORATE DRIVE, SUITE 200 |
| Entity Address, City or Town | Burlington, |
| Entity Address, State or Province | MA |
| Entity Address, Postal Zip Code | 01803-4238 |
| City Area Code | 781 |
| Local Phone Number | 270-1200 |
| 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 $0.01 per share |
| Trading Symbol | CIR |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
