Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2018	Apr. 23, 2018
Document And Entity Information [Abstract]
Entity Registrant Name	OIL STATES INTERNATIONAL, INC
Entity Central Index Key	0001121484
Trading Symbol	ois
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding (in shares)		59,956,972
Document Type	10-Q
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Amendment Flag	false