Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2019	Mar. 13, 2020	Jun. 28, 2019
Cover page.
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	001-34528
Entity Registrant Name	ZAGG Inc
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-2559624
Entity Address, Address Line One	910 West Legacy Center Way
Entity Address, Address Line Two	Suite 500
Entity Address, City or Town	Midvale
Entity Address, State or Province	UT
Entity Address, Postal Zip Code	84047
City Area Code	801
Local Phone Number	263-0699
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Emerging Growth Company	false
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Shell Company	false
Title of 12(b) Security	Common Stock, $0.001 par value
Trading Symbol	ZAGG
Security Exchange Name	NASDAQ
Entity Public Float			$ 197,841,738
Entity Common Stock, Shares Outstanding		29,756,911
Entity Central Index Key	0001296205
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2019
Amendment Flag	false
Documents Incorporated by Reference	Documents incorporated by reference. Portions of the Registrant's Definitive Proxy Statement for the Registrant's 2020 Annual Meeting of Stockholders are incorporated by reference in Part III of this report. The Definitive Proxy Statement or an amendment to this Form 10-K will be filed with the Securities and Exchange Commission within 120 days after the Registrant's fiscal year end.