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Document and Entity Information
May 11, 2023
Cover [Abstract]  
Entity Registrant Name Clearwater Paper Corp
Amendment Flag false
Entity Central Index Key 0001441236
Document Type 8-K
Document Period End Date May 11, 2023
Entity Incorporation State Country Code DE
Entity File Number 001-34146
Entity Tax Identification Number 20-3594554
Entity Address, Address Line One 601 West Riverside Ave.
Entity Address, Address Line Two Suite 1100
Entity Address, City or Town Spokane
Entity Address, State or Province WA
Entity Address, Postal Zip Code 99201
City Area Code (509)
Local Phone Number 344-5900
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock, par value $0.0001 per share
Trading Symbol CLW
Security Exchange Name NYSE
Entity Emerging Growth Company false