Document and Entity Information - USD ($) $ in Millions	12 Months Ended
Document and Entity Information - USD ($) $ in Millions	Dec. 31, 2020	Mar. 11, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K/A
Amendment Flag	true
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2020
Trading Symbol	RNET
Document Fiscal Period Focus	FY
Entity Registrant Name	RigNet, Inc.
Entity Central Index Key	0001162112
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Interactive Data Current	Yes
Security Exchange Name	NASDAQ
Title of 12(b) Security	Common Stock, $0.001 par value per share
Entity Common Stock, Shares Outstanding		21,016,003
Entity Address, Address Line One	15115 Park Row Blvd
Entity Address, Address Line Two	Suite 300
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77084-4947
City Area Code	281
Local Phone Number	674-0100
Entity Tax Identification Number	76-0677208
Entity File Number	001-35003
Entity Public Float			$ 32.1
Document Annual Report	true
Document Transition Report	false
Entity Incorporation, State or Country Code	DE
Documents Incorporated by Reference	None
Amendment Description	This Amendment No. 1 on Form 10-K/A (this “Amendment”) amends the RigNet, Inc. (“we”, “us”, “our” or the “Company”) Annual Report on Form 10-K for the fiscal year ending December 31, 2020, as filed with the Securities and Exchange Commission (“SEC”) on March 15, 2021 (the “Original Filing”). We are filing this Amendment for the sole purpose of providing the information required by Items 10 through 14 of Part III of Form 10-K. This information was previously omitted from our Original Filing in reliance on General Instruction G(3) to Form 10-K, which permits the information in the above-referenced items to be incorporated in our Form 10-K by reference to our definitive proxy statement if such statement is filed within 120 days after the end of our fiscal year covered by the Original Filing. The reference on the cover page of the Original Filing to the incorporation by reference to portions of our definitive proxy statement into Part III of the Original Filing is hereby deleted. In accordance with Rule 12b-15 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), Part III, Items 10 through 14 of the Original Filing are hereby amended and restated in their entirety. In addition, in connection with the filing of this Amendment and pursuant to the rules of the SEC, we are including with this Amendment new certifications of our principal executive officer and principal financial officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Accordingly, Item 15 of Part IV has also been amended and restated to reflect the filings of these new certifications. Because no financial statements are contained within this Amendment, we are not including certifications pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. Except as otherwise noted, this Amendment speaks as of the filing date of the Original Filing and reflects only the changes to the cover page, Items 10 through 14 of Part III and Item 15 of Part IV. No other information included in the Original Filing, including the information set forth in Part I and Part II, has been modified or updated in any way, and we have not updated the disclosures contained herein to reflect any events which occurred subsequent to the filing of the Original Filing or to modify the disclosure contained in the Original Filing other than to reflect the changes described above.

RigNet, Inc. 10-K/A