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Document and Entity Information
May 17, 2022
Cover [Abstract]  
Entity Registrant Name SPS COMMERCE INC
Amendment Flag false
Entity Central Index Key 0001092699
Document Type 8-K
Document Period End Date May 17, 2022
Entity Incorporation State Country Code DE
Entity File Number 001-34702
Entity Tax Identification Number 41-2015127
Entity Address, Address Line One 333 South Seventh Street
Entity Address, Address Line Two Suite 1000
Entity Address, City or Town Minneapolis
Entity Address, State or Province MN
Entity Address, Postal Zip Code 55402
City Area Code (612)
Local Phone Number 435-9400
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common stock, par value $0.001 per share
Trading Symbol SPSC
Security Exchange Name NASDAQ
Entity Emerging Growth Company false