RigNet (RNET) 10-K 6 Mar 18 2017 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Feb. 28, 2018	Jun. 30, 2017
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Trading Symbol	RNET
Entity Registrant Name	RigNet, Inc.
Entity Central Index Key	1,162,112
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		18,232,872
Entity Public Float			$ 289.6

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 34,598	$ 57,152
Restricted cash	43	139
Accounts receivable, net	49,021	48,672
Costs and estimated earnings in excess of billings on uncompleted contracts	2,393	2,382
Prepaid expenses and other current assets	5,591	10,379
Total current assets	91,646	118,724
Property, plant and equipment, net	60,344	59,757
Restricted cash	1,500	1,514
Goodwill	37,088	21,998
Intangibles, net	30,405	16,028
Deferred tax and other assets	9,111	12,951
TOTAL ASSETS	230,094	230,972
Current liabilities:
Accounts payable	12,234	9,057
Accrued expenses	16,089	12,835
Current maturities of long-term debt	4,941	8,478
Income taxes payable	1,601	877
Deferred revenue and other current liabilities	8,511	3,625
Total current liabilities	43,376	34,872
Long-term debt	53,173	52,990
Deferred revenue	546	254
Deferred tax liability	189	256
Other liabilities	25,533	30,022
Total liabilities	122,817	118,394
Commitments and contingencies (Note 9)
Stockholders' equity
Preferred stock - $0.001 par value; 10,000,000 shares authorized; no shares issued or outstanding at December 31, 2017 and 2016
Common stock - $0.001 par value; 191,000,000 shares authorized; 18,232,872 and 17,932,598 shares issued and outstanding at December 31, 2017 and 2016, respectively	18	18
Treasury stock - 5,516 and no shares at December 31, 2017 and December 31, 2016, respectively, at cost	(116)
Additional paid-in capital	155,829	147,906
Accumulated deficit	(33,726)	(17,550)
Accumulated other comprehensive loss	(14,806)	(17,971)
Total stockholders' equity	107,199	112,403
Non-redeemable, non-controlling interest	78	175
Total equity	107,277	112,578
TOTAL LIABILITIES AND EQUITY	$ 230,094	$ 230,972

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	191,000,000	191,000,000
Common stock, shares issued	18,232,872	17,932,598
Common stock, shares outstanding	18,232,872	17,932,598
Treasury stock, shares	5,516	0

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Statement [Abstract]
Revenue	$ 204,892	$ 220,623	$ 271,260
Expenses:
Cost of revenue (excluding depreciation and amortization)	131,166	129,759	163,238
Depreciation and amortization	30,845	33,556	32,471
Impairment of goodwill, intangibles, and property, plant and equipment		397	14,262
Selling and marketing	8,347	7,172	9,449
General and administrative	44,522	52,190	63,192
Total expenses	214,880	223,074	282,612
Operating income (loss)	(9,988)	(2,451)	(11,352)
Other income (expense):
Interest expense	(2,870)	(2,708)	(2,054)
Other income (expense), net	133	(313)	(845)
Loss before income taxes	(12,725)	(5,472)	(14,251)
Income tax expense	(3,472)	(5,825)	(2,409)
Net loss	(16,197)	(11,297)	(16,660)
Less: Net loss (income) attributable to: Non-redeemable,non-controllinginterest	(21)	210	314
Net Loss attributable to RigNet, Inc. stockholders	(16,176)	(11,507)	(16,974)
COMPREHENSIVE LOSS
Net loss	(16,197)	(11,297)	(16,660)
Foreign currency translation	3,165	(4,135)	(7,154)
Comprehensive loss	(13,032)	(15,432)	(23,814)
Less: Comprehensive income (loss) attributable to non-controlling interest	(21)	210	314
Comprehensive loss attributable to RigNet, Inc. stockholders	(13,011)	(15,642)	(24,128)
LOSS PER SHARE - BASIC AND DILUTED
Net loss attributable to RigNet, Inc. common stockholders	$ (16,176)	$ (11,507)	$ (16,974)
Net loss per share attributable to RigNet, Inc. common stockholders, basic	$ (0.90)	$ (0.65)	$ (0.97)
Net loss per share attributable to RigNet, Inc. common stockholders, diluted	$ (0.90)	$ (0.65)	$ (0.97)
Weighted average shares outstanding, basic	18,009	17,768	17,534
Weighted average shares outstanding, diluted	18,009	17,768	17,534

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net loss	$ (16,197,000)	$ (11,297,000)	$ (16,660,000)
Adjustments to reconcile net loss to net cash provided by operations:
Depreciation and amortization	30,845,000	33,556,000	32,471,000
Impairment of goodwill and intangibles		397,000	12,592,000
Stock-based compensation	3,703,000	3,389,000	3,660,000
Amortization of deferred financing costs	217,000	135,000	171,000
Deferred taxes	3,917,000	(1,830,000)	(1,995,000)
Change in fair value of earn-out/contingent consideration	(320,000)	(1,279,000)
Accretion of discount of contingent consideration payable for acquisitions	624,000	498,000
Impairment of property, plant and equipment	0	0	1,670,000
(Gain) loss on sales of property, plant and equipment, net of retirements	55,000	(153,000)	(41,000)
Changes in operating assets and liabilities, net of effect of acquisition:
Accounts receivable	203,000	18,347,000	10,868,000
Costs and estimated earnings in excess of billings on uncompleted contracts	122,000	4,378,000	3,803,000
Prepaid expenses and other assets	4,659,000	392,000	(769,000)
Accounts payable	2,733,000	129,000	(4,916,000)
Accrued expenses	3,601,000	(8,579,000)	(1,404,000)
Deferred revenue and other assets	4,933,000	(1,150,000)	(82,000)
Other liabilities	(9,867,000)	2,241,000	(2,334,000)
Net cash provided by operating activities	29,228,000	39,174,000	37,034,000
Cash flows from investing activities:
Acquisitions	(32,205,000)	(4,841,000)
Capital expenditures	(18,284,000)	(13,641,000)	(34,262,000)
Proceeds from sales of property, plant and equipment	499,000	194,000	280,000
Increase (decrease) in restricted cash	110,000	(1,110,000)	657,000
Net cash used in investing activities	(49,880,000)	(19,398,000)	(33,325,000)
Cash flows from financing activities:
Proceeds from issuance of common stock	800,000	1,680,000	1,055,000
Subsidiary distributions to non-controlling interest	(76,000)	(197,000)	(314,000)
Proceeds from borrowings	15,000,000
Repayments of long-term debt	(18,171,000)	(16,560,000)	(8,623,000)
Payments of financing fees	(400,000)	(100,000)
Excess tax benefits from stock-based compensation		(175,000)	635,000
Net cash used in financing activities	(2,847,000)	(15,352,000)	(7,247,000)
Net change in cash and cash equivalents	(23,499,000)	4,424,000	(3,538,000)
Cash and cash equivalents:
Balance, January 1,	57,152,000	60,468,000	66,576,000
Changes in foreign currency translation	945,000	(7,740,000)	(2,570,000)
Balance, December 31,	34,598,000	57,152,000	60,468,000
Supplemental disclosures:
Income taxes paid	2,060,000	5,337,000	9,766,000
Interest paid	1,965,000	2,032,000	1,862,000
Property, plant and equipment acquired under capital leases		335,000
Non-cash investing - capital expenditures accrued	1,672,000	2,046,000	$ 824,000
Non-cash investing - tenant improvement allowance	1,728,000
Non-cash investing - contingent consideration for acquisitions	3,798,000	5,673,000
Non-cash investing and financing - stock for Cyphre Security Solutions	3,304,000
Liabilities assumed - acquisitions	$ 819,000	$ 2,408,000

Consolidated Statements of Equi

Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings (Accumulated Deficit) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total Stockholders' Equity [Member]	Non-Redeemable, Non-Controlling Interest [Member]
Beginning Balance at Dec. 31, 2014	$ 142,091	$ 18		$ 137,662	$ 10,931	$ (6,682)	$ 141,929	$ 162
Beginning Balance, shares at Dec. 31, 2014		17,630,000
Issuance of common stock upon the exercise of stock options	$ 1,055			1,055			1,055
Issuance of common stock upon the exercise of stock options, shares	80,000	79,000
Issuance of common stock upon the vesting of Restricted Stock Units, net of share cancellations	$ 0	$ 0	$ 0	0	0	0	0	0
Issuance of common stock upon the vesting of Restricted Stock Units, net of share cancellations, shares		49,000
Stock-based compensation	3,660			3,660			3,660
Excess tax benefits from stock-based compensation	635			635			635
Foreign currency translation	(7,154)					(7,154)	(7,154)
Non-controlling owner distributions	(314)							(314)
Net income (loss)	(16,660)				(16,974)		(16,974)	314
Ending Balance at Dec. 31, 2015	123,313	$ 18		143,012	(6,043)	(13,836)	123,151	162
Ending Balance, shares at Dec. 31, 2015		17,758,000
Issuance of common stock upon the exercise of stock options	$ 1,680			1,680			1,680
Issuance of common stock upon the exercise of stock options, shares	223,000	223,000
Restricted common stock cancellations	$ 0	$ 0	0	0	0	0	0	0
Restricted common stock cancellations, shares		(48,000)
Stock-based compensation	3,389			3,389			3,389
Excess tax benefits from stock-based compensation	(175)			(175)			(175)
Foreign currency translation	(4,135)					(4,135)	(4,135)
Non-controlling owner distributions	(197)							(197)
Net income (loss)	(11,297)				(11,507)		(11,507)	210
Ending Balance at Dec. 31, 2016	$ 112,578	$ 18		147,906	(17,550)	(17,971)	112,403	175
Ending Balance, shares at Dec. 31, 2016	17,932,598	17,933,000
Issuance of common stock upon the exercise of stock options	$ 916			916			916
Issuance of common stock upon the exercise of stock options, shares	70,000	70,000
Issuance of common stock upon the vesting of Restricted Stock Units, net of share cancellations	$ 0	$ 0	0	0	0	0	0	0
Issuance of common stock upon the vesting of Restricted Stock Units, net of share cancellations, shares		44,000
Issuance of common stock upon the acquisition of Cyphre	3,304			3,304			3,304
Issuance of common stock upon the acquisition of Cyphre, shares		192,000
Stock witheld to cover employee taxes on stock-based compensation	(116)		$ (116)				(116)
Stock withheld to cover employee taxes on stock-based compensation, shares		(6,000)	6,000
Stock-based compensation	3,703			3,703			3,703
Foreign currency translation	3,165					3,165	3,165
Non-controlling owner distributions	(76)							(76)
Net income (loss)	(16,197)				(16,176)		(16,176)	(21)
Ending Balance at Dec. 31, 2017	$ 107,277	$ 18	$ (116)	$ 155,829	$ (33,726)	$ (14,806)	$ 107,199	$ 78
Ending Balance, shares at Dec. 31, 2017	18,232,872	18,233,000	6,000

Business and Summary of Signifi

Business and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Business and Summary of Significant Accounting Policies	Note 1—Business and Summary of Significant Accounting Policies Nature of Business RigNet, Inc. (the Company or RigNet) is a global technology company that provides customized communications services, applications and cybersecurity solutions enhancing customer decision making and business performance. The Company provides solutions ranging from fully-managed voice and data networks to more advanced networks and applications that include video conferencing, asset and weather monitoring, real-time data services and cybersecurity primarily under a multi-service recurring revenue model. Customers use a private extranet to manage information flows and execute mission-critical operations primarily in remote areas where conventional telecommunications infrastructure is either unreliable or unavailable. RigNet offers clients what is often the sole means of communications for their remote operations. Basis of Presentation The Company presents its financial statements in accordance with generally accepted accounting principles in the United States (U.S. GAAP). Principles of Consolidation and Reporting The Company’s consolidated financial statements include the accounts of RigNet, Inc. and all subsidiaries thereof. All intercompany accounts and transactions have been eliminated in consolidation. As of December 31, 2017, 2016 and 2015, non-controlling Use of Estimates in Preparation of Financial Statements The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting periods, as well as certain financial statement disclosures. The estimates that are particularly significant to the financial statements include estimates related to the Company’s use of the percentage-of-completion Cash and Cash Equivalents Cash and cash equivalents consist of cash on-hand Restricted Cash As of December 31, 2017 and 2016, the Company had restricted cash of $0.1 million and $1.5 million, in current and long-term assets, respectively. The restricted cash in long-term assets is primarily used to collateralize a performance bond in the Managed Services segment (see Note 6 – “Long-Term Debt”). The restricted cash in current assets as of December 31, 2016 is an escrowed portion of the purchase price for the acquisition of Orgtec S.A.P.I. de C.V., d.b.a TECNOR (TECNOR). Accounts Receivable Trade accounts receivable are recognized as customers are billed in accordance with customer contractual agreements. The Company reports an allowance for doubtful accounts for probable credit losses existing in accounts receivable. Management determines the allowance based on a review of currently outstanding receivables and the Company’s historical write-off Property, Plant and Equipment Property, plant and equipment consists of (i) telecommunication and computer equipment, (ii) furniture and other office equipment, (iii) leasehold improvements, (iv) building and (v) land. All property, plant and equipment, excluding land, is depreciated and stated at acquisition cost net of accumulated depreciation. Depreciation is provided using the straight-line method over the expected useful lives of the respective assets, which range from one to ten years. The Company assesses the value of property, plant and equipment for impairment when the Company determines that events and circumstances indicate that the recorded carrying value may not be recoverable. An impairment is determined by comparing estimated future net undiscounted cash flows to the carrying value at the time of the assessment. No impairment to property, plant and equipment was recorded in the years ended December 31, 2017 and 2016. During the year ended December 31, 2015, the Company impaired property, plant and equipment by $1.7 million, as the carrying value exceeded fair value, as a result of declines in the U.S. land rig counts. Maintenance and repair costs are charged to expense when incurred. Intangibles Intangibles consist of customer relationships, covenants-not-to-compete, internal-use No impairment to intangibles was recorded in the year ended December 31, 2017 In June 2016, the Company identified a triggering event for a license in Kazakhstan associated with a decline in cash flow projections, which resulted in a $0.4 million impairment of licenses in the Corporate segment, which was the full amount of the Company’s intangibles within Kazakhstan. In July 2015, the Company identified a triggering event in the North America Land reporting unit associated with a significant decline in U.S. land rig counts since December 2014. This circumstance resulted in a reduction in the Company’s cash flow projections during the revision of internal forecasts. In July 2015, the Company conducted an intangibles impairment test and as a result of such test, recognized a $1.7 million impairment of customer relationships, the full amount within the North America Land reporting unit, which reports through the Managed Services reportable segment. Goodwill Goodwill resulted from prior acquisitions as the consideration paid for the acquired businesses exceeded the fair value of acquired identifiable net tangible and intangible assets. Goodwill is reviewed for impairment at least annually, as of July 31, with additional evaluations being performed when events or circumstances indicate that the carrying value of these assets may not be recoverable. Goodwill impairment is determined using a two-step If the fair value of a reporting unit is less than its book value, goodwill of the reporting unit is considered to be impaired and the second step of the impairment test is performed to measure the amount of impairment loss, if any. The second step of the impairment test compares the implied fair value of the reporting unit’s goodwill with the book value of that goodwill. If the book value of the reporting unit’s goodwill exceeds the implied fair value of that goodwill, an impairment loss is recognized in an amount equal to that excess. The implied fair value of goodwill is determined by allocating the reporting unit’s fair value to all of its assets and liabilities other than goodwill in the same manner as a purchase price allocation. Any impairment in the value of goodwill is charged to earnings in the period such impairment is determined. The Company performs its annual impairment test on July 31, with the most recent annual test being performed as of July 31, 2017. The July 31, 2017 and 2016 tests resulted in no impairment as the fair value of each reporting unit substantially exceeded the carrying value plus goodwill of that reporting unit. As of November 30, 2017, the Company’s latest completed interim goodwill impairment testing, the fair values of the Company’s reporting units are substantially in excess of their carrying values. As such, the test resulted in no impairment. The November 30, 2017 interim test was conducted due to a change in segments after the Company completed the acquisition of ESS. As a result of the July 2015 annual impairment test, the Company recognized $10.9 million of impairment of goodwill, the full amount within the North America Land reporting unit, which reports through the Managed Services reportable segment. The North America Land reporting unit was adversely impacted by a significant decline in U.S. land rig counts since December 2014. This decline resulted in reduced internal cash flow projections causing the estimated fair value of the North America Land reporting unit to be below its carrying value. The fair value of all other reporting units substantially exceeded the carrying value plus goodwill of that reporting unit. As of December 31, 2017 and 2016, goodwill was $37.1 million and $22.0 million, respectively. In addition to the impact of acquisitions and impairments, goodwill increases or decreases in value due to the effect of foreign currency translation. Long-Term Debt Long-term debt is recognized in the consolidated balance sheets, net of costs incurred, in connection with obtaining debt financing. Debt financing costs are deferred and reported as a reduction to the principal amount of the debt. Such costs are amortized over the life of the debt using the effective interest rate method and included in interest expense in the Company’s consolidated financial statements. Revenue Recognition – General All revenue is recognized when persuasive evidence of an arrangement exists, the service is complete, the amount is fixed or determinable and collectability is reasonably assured. Network service fee revenue is based on fixed-price, day-rate Revenue Recognition – Systems Integration Revenues related to long-term, fixed-price Systems Integration contracts for customized network solutions are recognized using the percentage-of-completion cost-to-cost The Company reviews all material contracts on a monthly basis and revises the estimates as appropriate for developments such as, providing services, purchasing third-party materials and equipment at costs differing from those previously estimated, and incurring or expecting to incur schedule issues. Changes in estimated final contract revenues and costs can either increase or decrease the final estimated contract profit or loss. Profits are recorded in the period in which a change in estimate is recognized, based on progress achieved through the period of change. Anticipated losses on contracts are recorded in full in the period in which they become evident. Revenue recognized in excess of amounts billed is classified as a current asset under costs and estimated earnings in excess of billings on uncompleted contracts. As of December 31, 2017 and 2016, the amount of costs and estimated earnings in excess of billings on uncompleted contracts related to Systems Integration projects was $2.4 million. Amounts billed to customers in excess of revenue recognized to date are classified as a current liability under deferred revenue. Under long-term contracts, amounts recorded in costs and estimated earnings in excess of billings on uncompleted contracts may not be realized or paid, respectively, within a one-year When estimating the amount of final contract profit or loss, the Company includes certain probable claims and unapproved change orders to customers as adjustments to final estimated revenues and probable claims to vendors, subcontractors and others as adjustments to final estimated costs. The Company records revenue on contracts relating to certain probable claims and unapproved change orders by including in revenue an amount less than or equal to the amount of costs incurred to date relating to these probable claims and unapproved change orders, thus recognizing no profit until such time as claims are finalized or change orders are approved. The amount of unapproved change orders and claim revenues is included in the Company’s Consolidated Balance Sheets as part of costs and estimated earnings in excess of billings on uncompleted contracts. As new facts become known, an adjustment to the estimated recovery is made and reflected in the current period. Besides the Systems Integration contractual dispute issue discussed in Note 9, there were no other material contract penalties, claims, settlements or changes in contract estimates and no amounts were netted in revenue during the years ended 2017, 2016, and 2015. Stock-Based Compensation The Company recognizes expense for stock-based compensation based on the fair value of options and restricted stock on the grant date of the awards. Fair value of options on the grant date is determined using the Black-Scholes model, which requires judgment in estimating the expected term of the option, risk-free interest rate, expected volatility of the Company’s stock and dividend yield of the option. Fair value of restricted stock, restricted stock units and performance share units on the grant date is equal to the market price of RigNet’s common stock on the date of grant. The Company’s policy is to recognize compensation expense for service-based awards on a straight-line basis over the requisite service period of the entire award. Stock-based compensation expense is based on awards ultimately expected to vest. Taxes Current income taxes are determined based on the tax laws and rates in effect in the jurisdictions and countries that the Company operates in and revenue is earned. Deferred income taxes reflect the tax effect of net operating losses, foreign tax credits and the tax effects of temporary differences between the carrying amount of assets and liabilities for financial statement and income tax purposes, as determined under enacted tax laws and rates. Valuation allowances are established when management determines that it is more likely than not that some portion or the entire deferred tax asset will not be realized. U.S Federal deferred tax liabilities are recorded for the unremitted earnings of foreign subsidiaries that are not permanently reinvested, net of potential foreign tax credits; otherwise, no U.S. Federal deferred taxes are provided on foreign subsidiaries. The financial effect of changes in tax laws or rates is accounted for in the period of enactment. From time to time, the Company engages in transactions in which the tax consequences may be subject to uncertainty. In the normal course of business, the Company prepares and files tax returns based on interpretation of tax laws and regulations, which are subject to examination by various taxing authorities. Such examinations may result in future tax and interest assessments by these taxing authorities. The Company evaluates its tax positions and recognize only tax benefits for financial purposes that, more likely than not, will be sustained upon examination, including resolutions of any related appeals or litigation processes, based on the technical merits of the position. The Company has elected to include income tax related interest and penalties as a component of income tax expense. On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act (the Tax Act). In response, the SEC staff issued SAB 118, which provides guidance on accounting for the tax effects of the Tax Act. SAB 118 provides a measurement period that should not extend beyond one year from the Tax Act enactment date for companies to complete the accounting under ASC 740. In accordance with SAB 118, a company must reflect the income tax effects of those aspects of the Act for which the accounting under ASC 740 is complete. To the extent that a company’s accounting for certain income tax effects of the Tax Act is incomplete but it is able to determine a reasonable estimate, it must record a provisional estimate in the financial statements. If a company cannot determine a provisional estimate to be included in the financial statements, it should continue to apply ASC 740 on the basis of the provisions of the tax laws that were in effect immediately before the enactment of the Tax Act. Foreign Currency Translation The U.S. dollar serves as the currency of measurement and reporting for the Company’s consolidated financial statements. The Company has certain subsidiaries with functional currencies of Norwegian kroner, British pound sterling, or Brazilian real. The functional currency of all the Company’s other subsidiaries is the U.S. dollar. Transactions occurring in currencies other than the functional currency of a subsidiary have been converted to the functional currency of that subsidiary at the exchange rate in effect at the transaction date with resulting gains and losses included in current earnings. Carrying values of monetary assets and liabilities in functional currencies other than U.S. dollars have been translated to U.S. dollars based on the U.S. exchange rate at the balance sheet date and the resulting foreign currency translation gain or loss is included in comprehensive income (loss) in the consolidated financial statements. Recently Issued Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update No. 2014-09 2014-09), No. 2015-14 2015-14), No. 2016-08 2016-08), No. 2016-10 2016-10) No. 2016-12 2016-12), In February 2016, the FASB issued Accounting Standards Update No. 2016-02 2016-02), In August 2016, the FASB issued Accounting Standards Update No. 2016-15 2016-15), In October 2016, the FASB issued Accounting Standards Update No. 2016-16 2016-16), In November 2016, the FASB issued Accounting Standards Update No. 2016-18 2016-18),

Business and Credit Concentrati

Business and Credit Concentrations	12 Months Ended
	Dec. 31, 2017
Risks and Uncertainties [Abstract]
Business and Credit Concentrations	Note 2—Business and Credit Concentrations The Company is exposed to various business and credit risks including interest rate, foreign currency, credit and liquidity risks. Interest Rate Risk The Company has significant interest-bearing liabilities at variable interest rates which generally price monthly. The Company’s variable borrowing rates are tied to LIBOR resulting in interest rate risk (see Note 6— “Long-Term Debt”). The Company presently does not use financial instruments to hedge interest rate risk, but evaluates this on a regular basis and may utilize financial instruments in the future if deemed necessary. Foreign Currency Risk The Company has exposure to foreign currency risk, as a portion of the Company’s activities are conducted in currencies other than U.S. dollars. Currently, the Norwegian kroner, the British pound sterling and the Brazilian Real are the currencies that could materially impact the Company’s financial position and results of operations. The Company presently does not hedge these risks, but evaluates financial risk on a regular basis and may utilize financial instruments in the future if deemed necessary. Foreign currency translations are reported as accumulated other comprehensive income (loss) in the Company’s consolidated financial statements. Credit Risk Credit risk, with respect to accounts receivable, is due to the limited number of customers concentrated in the oil and gas, maritime, pipeline, engineering and construction industries. The Company mitigates the risk of financial loss from defaults through defined collection terms in each contract or service agreement and periodic evaluations of the collectability of accounts receivable. The Company provides an allowance for doubtful accounts which is adjusted when the Company becomes aware of a specific customer’s inability to meet its financial obligations or as a result of changes in the overall aging of accounts receivable. Year Ended December 31, 2017 2016 2015 (in thousands) Accounts receivable $ 51,996 $ 52,996 $ 66,077 Allowance for doubtful accounts, January 1, (4,324 ) (3,972 ) (3,576 ) Current year provision for doubtful accounts (366 ) (1,095 ) (912 ) Write-offs 1,715 743 516 Allowance for doubtful accounts, December 31, (2,975 ) (4,324 ) (3,972 ) Accounts receivable, net $ 49,021 $ 48,672 $ 62,105 Although during 2017, 2016 and 2015 no single customer comprised greater than 10% of revenue, the top 5 customers generated 26.8%, 28.6% and 21.3% of the Company’s 2017, 2016 and 2015 revenue, respectively. Liquidity Risk The Company maintains cash and cash equivalent balances with major financial institutions which, at times, exceed federally insured limits. The Company monitors the financial condition of the financial institutions and has not experienced losses associated with these accounts during 2017, 2016 or 2015. Liquidity risk is managed by continuously monitoring forecasted and actual cash flows and by matching the maturity profiles of financial assets and liabilities (see Note 6— “Long-Term Debt”).

Business Combinations

Business Combinations	12 Months Ended
	Dec. 31, 2017
Business Combinations [Abstract]
Business Combinations	Note 3—Business Combinations Intelie On January 17, 2018, RigNet entered into an agreement to purchase Intelie Soluções Em Informática S.A. (Intelie). Intelie is a real-time, predictive analytics company that combines an operational understanding with a machine learning approach. Intelie facilitates innovation via Intelie Pipes, a distributed query language with a complex event processor to aggregate and normalize real-time data from a myriad of data sources. This technology enables the Intelie LIVE platform to solve data integration, data quality, data governance and monitoring problems. Intelie LIVE is an operational intelligence platform that empowers clients to make timely, data-driven decisions in mission-critical real-time operations, including drilling, and longer-term, data-intensive projects, such as well planning. Intelie is based in Brazil. The Company expects to close the acquisition of Intelie, subject to customary closing conditions including certain approvals of the Brazilian government, in the first quarter of 2018. The purchase price in the agreement includes (i) R$10.6 million (BRL) (or approximately $3.3 million) in cash, (ii) that number of shares of RigNet common stock equivalent to $7.5 million based on the twenty day volume weighted average price (VWAP) of RigNet common stock ending three days before closing; and (iii) contingent consideration in the form of RigNet common stock payable on the third anniversary of the closing of the transaction in an amount not to exceed $17.0 million based on the 20 day VWAP at the time of issuance and dependent on the achievement of growth of software-as-a-service revenues Energy Satellite Services On July 28, 2017, RigNet acquired substantially all the assets of Energy Satellite Services (ESS). ESS is a supplier of wireless communications services via satellite networks primarily to the midstream sector of the oil and gas industry for remote pipeline monitoring. The assets acquired enhance RigNet’s Supervisory Control and Data Acquisition (SCADA) customer portfolio, and strengthen the Company’s US land and Internet-of-Things The assets and liabilities of ESS have been recorded at their estimated fair values at the date of acquisition. The excess of the purchase price over the estimated fair values of the underlying net tangible and identifiable intangible assets and liabilities has been recorded as goodwill. The goodwill of $8.5 million arising from the acquisition consists largely of growth prospects, synergies and other benefits that the Company believes will result from combining the operations of the Company and ESS, as well as other intangible assets that do not qualify for separate recognition, such as assembled workforce in place at the date of acquisition. The goodwill recognized is expected to be deductible for income tax purposes. The acquisition of ESS, including goodwill, is included in the Company’s consolidated financial statements as of the acquisition date and is reflected in the Applications and Internet-of-Things Weighted Average Fair Market Values (in thousands) Accounts Receivable $ 392 Property and equipment 1,000 Covenant Not to Compete 5 3,040 Customer Relationships 7 9,870 Total identifiable intangible assets 12,910 Goodwill 8,465 Accounts Payable (567 ) Total purchase price $ 22,200 Data Technology Solutions On July 24, 2017, RigNet acquired substantially all the assets of Data Technology Solutions (DTS). DTS provides comprehensive communications and IT services to the onshore, offshore, and maritime industries, as well as disaster relief solutions to global corporate clients. The Company paid $5.1 million in cash for the DTS assets. DTS is based in Louisiana. The assets and liabilities of DTS have been recorded at their estimated fair values at the date of acquisition. The excess of the purchase price over the estimated fair values of the underlying net tangible and identifiable intangible assets and liabilities has been recorded as goodwill. The goodwill of $0.7 million arising from the acquisition consists largely of growth prospects, synergies and other benefits that the Company believes will result from combining the operations of the Company and DTS, as well as other intangible assets that do not qualify for separate recognition, such as assembled workforce in place at the date of acquisition. The goodwill recognized is expected to be deductible for income tax purposes. The acquisition of DTS, including goodwill, is included in the Company’s consolidated financial statements as of the acquisition date and is reflected in the Managed Services segment. Fair Market Values (in thousands) Property and equipment $ 4,553 Goodwill 704 Accounts Payable (152 ) Total purchase price $ 5,105 Cyphre Security Solutions On May 18, 2017, RigNet completed its acquisition of Cyphre Security Solutions (Cyphre) for an estimated aggregate purchase price of $12.0 million. Of this aggregate purchase price, RigNet paid $4.9 million in cash in May 2017, $3.3 million in stock and expects to pay $3.8 million of contingent consideration for intellectual property, estimated as of the date of acquisition. The initial estimate of the contingent consideration for intellectual property is preliminary and remains subject to change based on certain post-closing contractual options under the acquisition agreement. Cyphre is a cybersecurity company that provides advanced enterprise data protection leveraging BlackTIE ® The contingent consideration for Cyphre is measured at fair value, based on level 3 inputs, with any change to fair value recorded in the Consolidated Statements of Comprehensive Loss in each reporting period. As of December 31, 2017, the fair value of the contingent consideration was $3.9 million. During the year ended December 31, 2017, RigNet recognized accreted interest expense on the Cyphre contingent consideration of $0.1 million with corresponding increases to other liabilities. The assets and liabilities of Cyphre have been recorded at their estimated fair values at the date of acquisition. The excess of the purchase price over the estimated fair values of the underlying net tangible and identifiable intangible assets and liabilities has been recorded as goodwill. The goodwill of $4.6 million arising from the acquisition consists largely of growth prospects, synergies and other benefits that the Company believes will result from combining the operations of the Company and Cyphre, as well as other intangible assets that do not qualify for separate recognition, such as assembled workforce in place at the date of acquisition. The goodwill recognized is expected to be deductible for income tax purposes. The acquisition of Cyphre, including goodwill, is included in the Company’s consolidated financial statements as of the acquisition date and is reflected in the Applications and Internet-of-Things Weighted Average Fair Market Values (in thousands) Property and equipment $ 18 Trade Name 7 1,590 Technology 7 5,571 Customer Relationships 7 332 Total identifiable intangible assets 7,493 Goodwill 4,591 Accrued Expenses (100 ) Total purchase price $ 12,002 (a) (a) Includes $3.8 million in contingent consideration estimated as of the date of acquisition. Actual and Pro Forma Impact of the 2017 Acquisitions The 2017 acquisitions of ESS, DTS and Cyphre contributed $5.1 million of revenue for the year ended December 31, 2017. The 2017 acquisitions contributed $1.4 million to net income for the year ended December 31, 2017. The following table represents supplemental pro forma information as if the 2017 acquisitions had occurred on January 1, 2016. Year Ended December 31, 2017 2016 (in thousands, except per share amounts) Revenue $ 214,899 $ 237,352 Expenses 228,105 242,483 Net loss $ (13,206 ) $ (5,131 ) Net loss attributable to $ (13,185 ) $ (5,341 ) Net loss per share attributable to Basic $ (0.73 ) $ (0.30 ) Diluted $ (0.73 ) $ (0.30 ) For the year ended December 31, 2017, RigNet incurred $3.3 million, respectively, of acquisition-related costs, which are reported as general and administrative expense in the Company’s Consolidated Statements of Comprehensive Loss. Additional costs related to these acquisitions will be incurred and recorded as expense in 2018. TECNOR On February 4, 2016, RigNet completed its acquisition of Orgtec S.A.P.I. de C.V., d.b.a TECNOR (TECNOR) for an estimated aggregate purchase price of $11.4 million. Of this aggregate purchase price, RigNet paid $4.8 million in cash in February 2016, paid $0.1 million for final net working capital and expected to pay a $6.5 million contingent consideration earn-out, earn-out earn-out The assets and liabilities of TECNOR have been recorded at their estimated fair values at the date of acquisition. The excess of the purchase price over the estimated fair values of the underlying net tangible and identifiable intangible assets and liabilities has been recorded as goodwill. The earn-out earn-out earn-out earn-out earn-out The goodwill of $6.5 million arising from the acquisition consists largely of growth prospects, synergies and other benefits that the Company believes will result from combining the operations of the Company and TECNOR, as well as other intangible assets that do not qualify for separate recognition, such as assembled workforce in place at the date of acquisition. None of the goodwill recognized is expected to be deductible for income tax purposes. The acquisition of TECNOR, including goodwill, is included in the Company’s consolidated financial statements as of the acquisition date and is reflected in the Managed Services segment. Weighted Average Fair Market Values (in thousands) Accounts Receivable $ 2,672 Other assets 1,280 Property and equipment 809 Backlog 2 366 Customer Relationships 7 2,210 Total identifiable intangible assets 2,576 Goodwill 6,465 Accounts Payable (1,914 ) Accrued Expenses (494 ) Total purchase price $ 11,394 (a) (a) Includes a $6.5 million contingent consideration earn-out, For the year ended December 31, 2016 and 2015, RigNet incurred $0.2 million and $0.3 million, respectively, on acquisition-related costs, which are reported as general and administrative expense in the Consolidated Statements of Comprehensive Loss. Actual and Pro Forma Impact of the TECNOR Acquisition TECNOR’s revenue and net loss included in the Consolidated Statements of Comprehensive Loss for the year ended December 31, 2016 are presented in the following table. These amounts represent actual amounts commencing immediately after the acquisition, February 4, 2016, through the year ended December 31, 2016 (in thousands): Year Ended Revenue 8,299 Net loss (287 ) The following table represents supplemental pro forma information as if the TECNOR acquisition had occurred on January 1, 2015. Pro forma adjustments include: • Adjust interest expense to remove interest on debt instrument previously held by TECNOR • Remove nonrecurring transaction costs incurred in 2015 prior to acquisition Year Ended December 31, 2016 2015 (in thousands, except per share amounts) Revenue $ 221,658 $ 285,329 Expenses 232,752 299,879 Net loss $ (11,094 ) $ (14,550 ) Net loss attributable to $ (11,304 ) $ (14,864 ) Net loss per share attributable to Basic $ (0.64 ) $ (0.85 ) Diluted $ (0.64 ) $ (0.85 )

Goodwill and Intangibles

Goodwill and Intangibles	12 Months Ended
	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangibles	Note 4—Goodwill and Intangibles Goodwill Goodwill resulted from prior acquisitions as the consideration paid for the acquired businesses exceeded the fair value of acquired identifiable net tangible and intangible assets. The goodwill primarily relates to the growth prospects foreseen for the companies acquired, synergies between existing business and the acquired companies and the assembled workforce of the acquired companies. Goodwill balances and changes therein, by reportable segment, as of and for the years ended December 31, 2017 and 2016 are presented below. All historical segment financial data included herein has been recast to conform to the current year presentation. Managed Applications and Internet-of- Things Total (in thousands) Balance, January 1, 2016 $ 17,391 $ 667 $ 18,058 Acquisition of Tecnor 6,465 — 6,465 Foreign currency translation (2,525 ) — (2,525 ) Balance, December 31, 2016 21,331 667 21,998 Acquisition of Cyphre, DTS and ESS 704 13,056 13,760 Foreign currency translation 1,330 — 1,330 Balance, December 31, 2017 $ 23,365 $ 13,723 $ 37,088 Intangibles Intangibles consist of customer relationships, brand name, backlog, technology and licenses acquired as part of the Company’s acquisitions. Intangibles also include internal-use Brand Name Backlog Customer Software Licenses Technology Covenant Not Total (in thousands, except estimated lives) Intangibles Acquired 4,353 2,916 20,025 12,471 2,500 — — 42,265 Accumulated amortization and foreign currency translation, January 1, 2016 (2,288 ) (2,841 ) (14,296 ) (3,242 ) (624 ) — — (23,291 ) Balance, January 1, 2016 2,065 75 5,729 9,229 1,876 — — 18,974 Additions — 366 2,210 1,144 — — — 3,720 Impairment — — — — (397 ) — — (397 ) Amortization expense (490 ) (224 ) (1,646 ) (2,550 ) (313 ) — — (5,223 ) Foreign currency translation (342 ) (4 ) (901 ) 201 — — — (1,046 ) Balance, December 31, 2016 1,233 213 5,392 8,024 1,166 — — 16,028 Additions 1,590 — 10,202 79 — 5,903 3,040 20,814 Amortization expense (669 ) (181 ) (2,302 ) (2,517 ) (286 ) (551 ) (253 ) (6,759 ) Foreign currency translation 91 (15 ) 209 37 — — — 322 Balance, December 31, 2017 $ 2,245 $ 17 $ 13,501 $ 5,623 $ 880 $ 5,352 $ 2,787 $ 30,405 Weighted average estimated lives (years) 7.0 1.0 7.0 5.0 7.0 5.0 7.0 The following table sets forth amortization expense for intangibles over the next five years (in thousands): 2018 6,939 2019 5,959 2020 4,952 2021 4,574 2022 4,275 Thereafter 3,706 $ 30,405

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Note 5—Property, Plant and Equipment Property, plant and equipment consists of the following: Estimated December 31, Lives 2017 2016 (in years) (in thousands) Telecommunication and computer equipment 1 - 5 $ 152,480 $ 131,401 Furniture and other 5 - 7 9,544 6,968 Building 10 4,627 3,901 Land — 1,444 1,240 168,095 143,510 Less: Accumulated depreciation (107,751 ) (83,753 ) $ 60,344 $ 59,757 Depreciation expense associated with property, plant and equipment was $24.1 million, $28.3 million and $27.1 million for the years ended December 31, 2017, 2016 and 2015, respectively. No impairment to property, plant and equipment was recorded in the years ended December 31, 2017 or 2016. During the year ended December 31, 2015, the Company impaired property, plant and equipment by $1.7 million, as the carrying value exceeded fair value, as a result of declines in the U.S. land rig counts

Long-Term Debt

Long-Term Debt	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Long-Term Debt	Note 6—Long-Term Debt As of December 31, 2017 and 2016, the following credit facilities and long-term debt arrangements with financial institutions were in place: December 31, 2017 2016 (in thousands) Term loan, net of unamortized deferred financing costs $ 14,503 $ 34,053 Revolving loan 43,400 27,000 Capital lease 211 415 58,114 61,468 Less: Current maturities of long-term debt (4,814 ) (8,399 ) Current maturities of capital lease (127 ) (79 ) $ 53,173 $ 52,990 Credit Agreement On November 6, 2017, the Company entered into its third amended and restated credit agreement with four participating financial institutions. The credit agreement provides for a $15.0 million term loan facility (Term Loan) and an $85.0 million revolving credit facility (RCF) and matures on November 6, 2020. The RCF contains a sub-limit stand-by Under the credit agreement, both the Term Loan and RCF bear interest at a rate of LIBOR plus a margin ranging from 1.75% to 2.75% based on a consolidated leverage ratio defined in the credit agreement. Interest is payable monthly and principal installments of $1.25 million under the Term Loan are due quarterly beginning March 31, 2018. The weighted average interest rate for the years ended December 31, 2017 and 2016 were 3.3% and 2.5%, respectively, with an interest rate of 4.1% at December 31, 2017. Term Loan As of December 31, 2017, the Term Loan had an outstanding principal balance of $15.0 million. RCF As of December 31, 2017, $43.4 million in draws remain outstanding under the RCF. Covenants and Restrictions The Company’s credit agreement contains certain covenants and restrictions, including restricting the payment of cash dividends under default and maintaining certain financial covenants such as a consolidated leverage ratio, defined in the credit agreement, of less than or equal to 2.75 to 1.0 and a fixed charge coverage ratio of not less than 1.25 to 1.0 as of December 31, 2017. If any default occurs related to these covenants, the unpaid principal and any accrued interest shall be declared immediately due and payable. As of December 31, 2017 and 2016, the Company believes it was in compliance with all covenants. Performance Bonds On September 14, 2012, NesscoInvsat Limited, a subsidiary of RigNet, secured a performance bond facility. On November 6, 2017, this facility became a part of the third amended and restated credit agreement and falls under the $25.0 million sub-limit As of December 31, 2017, there were $2.7 million in standby letters of credit issued to collateralize performance bonds. Additionally, the Company has $0.7 million in standby letters of credit supporting certain Systems Integration segment operations. As of December 31, 2017, the total amount of standby letters of credit outstanding is $3.4 million. In June 2016, the Company secured a performance bond facility with a lender in the amount of $1.5 million for its Managed Services segment. This facility has a maturity date of June 2021. The Company maintains restricted cash on a dollar for dollar basis to secure this facility. Deferred Financing Costs The Company incurred bank fees associated with the credit agreement, and certain amendments thereto, which were capitalized and reported as a reduction to long-term debt. Deferred financing costs are expensed using the effective interest method over the life of the agreement. For the years ended December 31, 2017 and 2016, deferred financing cost amortization of $0.2 million is included in interest expense in the Company’s consolidated financial statements. Debt Maturities The following table sets forth the aggregate principal maturities of long-term debt, net of deferred financing cost amortization (in thousands): 2018 4,941 2019 4,914 2020 48,259 Total debt, including current maturities $ 58,114

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2017
Related Party Transactions [Abstract]
Related Party Transactions	Note 7—Related Party Transactions The Company utilized a consulting vendor, KKR Capstone, which performs services exclusively for portfolio companies of Kohlberg Kravis Roberts & Co. L.P. (KKR). KKR is a significant stockholder of the Company. The Company purchased consulting services in the ordinary course of business totaling none, none and $0.3 million from KKR Capstone during the years ended December 31, 2017, 2016 and 2015, respectively.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 8—Fair Value Measurements The Company uses the following methods and assumptions to estimate the fair value of financial instruments: • Cash and Cash Equivalents • Restricted Cash • Accounts Receivable • Accounts Payable, Including Income Taxes Payable and Accrued Expenses • Long-Term Debt Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. For items that are not actively traded, fair value reflects the price in a transaction with a market participant, including an adjustment for risk, not just the mark-to-market Level 1—Inputs are unadjusted quoted prices in active markets for identical assets and liabilities and have the highest priority. Level 2—Inputs are observable inputs other than quoted prices considered Level 1. Level 2 inputs are market-based and are directly or indirectly observable, including quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; or valuation techniques whose inputs are observable. Where observable inputs are available, directly or indirectly, for substantially the full term of the asset or liability, the instrument is categorized in Level 2. Level 3—Inputs are unobservable (meaning they reflect the Company’s assumptions regarding how market participants would price the asset or liability based on the best available information) and therefore have the lowest priority. A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. RigNet believes it uses appropriate valuation techniques, such as market-based valuation, based on the available inputs to measure the fair values of its assets and liabilities. The Company’s valuation technique maximizes the use of observable inputs and minimizes the use of unobservable inputs. The Company had no derivatives as of December 31, 2017 or 2016. The Company’s non-financial The contingent consideration for Cyphre is measured at fair value, based on level 3 inputs, with any change to fair value recorded in the Consolidated Statements of Comprehensive Loss in each reporting period. As of December 31, 2017, the fair value of the contingent consideration was $3.9 million. During the year ended December 31, 2017, RigNet recognized accreted interest expense on the Cyphre contingent consideration of $0.1 million with corresponding increases to other liabilities. The earn-out earn-out earn-out

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 9—Commitments and Contingencies Legal Proceedings In August 2017, the Company filed litigation in Harris County District Court and arbitration against one of its former Chief Executive Officers for, among other things, breach of fiduciary duty, misappropriation of trade secrets, unfair competition and breach of contract. Recently, that former executive filed counterclaims against us and one of the Company’s independent directors. The Company is seeking repayment of certain severance benefits and injunctive relief. The Company has incurred legal expense of approximately $0.9 million in connection with this dispute for the year ended December 31, 2017. The Company may continue to incur significant legal fees, related expenses and management time in the future. The Company cannot predict the ultimate outcome of this dispute, the total costs to be incurred or the potential impact on personnel. Based on the information available at this time and management’s understanding of the dispute, the Company does not deem the likelihood of a material loss related to this dispute to be probable, so it has not accrued any liability related to the dispute. At this stage of the arbitration and litigation, the range of possible loss is not reasonably estimable. Global Xpress (GX) Dispute Inmarsat plc (Inmarsat), a satellite telecommunications company, and the Company are in a dispute relating to a January 2014 agreement regarding the purchase by the Company of up to $65.0 million, under certain conditions, of GX capacity from Inmarsat over several years (GX dispute). The parties are attempting to resolve the GX dispute through a contractually-stipulated arbitration process that began in October 2016. The parties dispute whether Inmarsat has met its contractual obligations with respect to the service under the agreement. In July 2017, pursuant to its contractual rights under the agreement, the Company delivered a notice of termination of the agreement to Inmarsat. In addition, the Company has filed certain counterclaims against Inmarsat. The Company has incurred legal expenses of $1.6 million in connection with the GX dispute for the year ended December 31, 2017. The Company may continue to incur significant legal fees, related expenses and management time in the future. The Company cannot predict the ultimate outcome of the GX dispute, the total costs to be incurred or the potential impact on personnel. Based on the information available at this time and management’s understanding of the GX dispute, the Company does not deem the likelihood of a material loss related to this dispute to be probable, so it has not accrued any liability related to the dispute. At this stage of the arbitration, the range of possible loss is not reasonably estimable, but could range from zero to the maximum amount payable under the contract for the services plus expenses. Other Litigation The Company, in the ordinary course of business, is a claimant or a defendant in various legal proceedings, including proceedings as to which the Company has insurance coverage and those that may involve the filing of liens against the Company or its assets. Contractual Dispute The Company’s Systems Integration business reached a settlement in the first quarter of 2016 related to a contract dispute associated with a percentage of completion project. The dispute related to the payment for work related to certain change orders. As of December 31, 2015, the Company had a $14.3 million loss representing the then total evident probable and estimable loss for the project. After the settlement, the Company recognized $2.3 million of gain in the first quarter of 2016. In the fourth quarter of 2016, the Company issued additional billings for approximately $1.0 million related to work performed in prior years under the contract. After the collection of this final billing in the fourth quarter of 2016, the Company received the certificate of final acceptance from the customer acknowledging completion of the project. The total loss incurred over the life of this project amounted to $11.2 million. The Company incurred legal expense of $0.2 million and $0.5 million in connection with the dispute for the years ended December 31, 2016 and 2015, respectively. Regulatory Matter In 2013, RigNet’s internal compliance program detected potential violations of U.S. sanctions by one of its foreign subsidiaries in connection with certain of its customers’ rigs that were moved into the territorial waters of countries sanctioned by the United States. The Company estimates that it received total revenue of approximately $0.1 million during the period related to the potential violations. The Company voluntarily self-reported the potential violations to the U.S. Treasury Department’s Office of Foreign Assets Control (OFAC) and the U.S. Department of Commerce Bureau of Industry and Security (BIS) and retained outside counsel who conducted an investigation of the matter under the supervision of the Company’s Audit Committee and submitted a report to OFAC and BIS. The Company incurred legal expenses of $0.1 million in connection with the investigation during each of the years ended December 31, 2016 and 2015. In the third quarter of 2016, the Company received a letter from BIS notifying the Company that it had concluded its investigation. BIS assessed no fines or penalties on the Company in connection with the matter. The Company does not anticipate any penalties or fines will be assessed as a result of the matter. As such, the Company released the previously accrued estimated liability of $0.8 million resulting in a decrease of general and administrative expense for the year ended December 31, 2016 in the Managed Services segment. Operating Leases The Company leases office space under lease agreements expiring on various dates through 2020. The Company recognized expense under operating leases of $4.0 million, $4.7 million and $3.7 million for the years ended December 31, 2017, 2016 and 2015, respectively. As of December 31, 2017, future minimum lease obligations were as follows (in thousands): 2018 2,394 2019 1,454 2020 886 2021 469 2022 483 Thereafter 1,268 $ 6,954 Commercial Commitments The Company enters into contracts for satellite bandwidth and other network services with certain providers. As of December 31, 2017, the Company had the following commercial commitments related to satellite and network services (in thousands): 2018 16,893 2019 7,274 2020 658 2021 641 2022 641 $ 26,107 The Company is no longer reporting $65.0 million in the above table for capacity from Inmarsat’s GX network. Please see paragraph “Global Express (GX) Dispute” above for details of the ongoing arbitration and the Company’s notice to terminate the contract with Inmarsat.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Note 10—Stock-Based Compensation The Company has two stock-based compensation plans as described below. 2010 Omnibus Incentive Plan In May 2010, the Board of Directors adopted the 2010 Omnibus Incentive Plan (2010 Plan). Under the 2010 Plan, the Board of Directors or its designated committee is authorized to issue awards representing a total of four million shares of common stock to certain directors, officers and employees of the Company. Awards may be in the form of new stock incentive awards or options including (i) incentive or non-qualified As of December 31, 2017, the Company has issued 1,145,110 options under the 2010 Plan, of which 142,711 options have been exercised, 639,918 options have been returned or forfeited and 362,481 options remain outstanding. During the year ended December 31, 2017, the Company granted a total of 231,974 RSUs to certain directors, officers and employees of the Company under the 2010 Plan. Of these, the Company granted (i) 130,852 RSUs to certain officers and employees that generally vest over a four-year period of continued employment, with 25% of the RSUs vesting on each of the first four anniversaries of the grant date, (ii) 33,586 RSUs to outside directors that vest in May 2018, and (iii) 67,536 PSUs to certain officers that generally cliff vest on the third anniversary of the grant date and are subject to continued employment and certain performance based targets. The ultimate number of PSUs issued is based on a multiple determined by certain performance based targets. As of December 31, 2017, 463,717 RSUs and shares of restricted stock have vested, 521,132 RSUs and shares of restricted stock have been forfeited and 414,768 unvested RSUs and shares of restricted stock were outstanding. 2006 Long-Term Incentive Plan In March 2006, the Board of Directors adopted the RigNet 2006 Long-Term Incentive Plan (2006 Plan). Under the 2006 Plan, the Board of Directors is authorized to issue options to purchase RigNet common stock to certain officers and employees of the Company. In general, all options granted under the 2006 Plan have a contractual term of ten years and a four-year vesting period, with 25.0% of the options vesting on each of the first four anniversaries of the grant date. The 2006 Plan authorized the issuance of three million options, which was increased to five million in January 2010, net of any options returned or forfeited. As of December 31, 2017, the Company has issued 981,125 options under the 2006 Plan, of which 745,503 options have been exercised, 217,497 options have been returned or forfeited and 18,125 options remain outstanding. The Company will issue no additional options under the 2006 Plan as the Company’s Board of Directors froze the 2006 Plan. There are no dividends related to stock options, restricted stock or common stock. Stock-based compensation expense related to the Company’s stock-based compensation plans for the years ended December 31, 2017, 2016 and 2015 was $3.7 million, $3.4 million and $3.7 million, respectively, and accordingly, reduced income for each year. There were no significant modifications to the two stock-based compensation plans during the years ended December 31, 2017, 2016 and 2015. As of December 31, 2017 and 2016, there were $6.5 million and $5.9 million, respectively, of total unrecognized compensation cost related to unvested equity awards granted and expected to vest under the 2010 Plan. This cost is expected to be recognized on a remaining weighted-average period of two years. All outstanding equity instruments are settled in stock. The Company currently does not have any awards accounted for as a liability. The fair value of each stock option award is estimated on the grant date using a Black-Scholes option valuation model, which uses certain assumptions as of the date of grant: • Expected Volatility • Expected Term non-transferability, • Risk-Free Interest Rate • Dividend Yield No options were granted in 2017. The assumptions used for grants made in the years ended December 31, 2016 and 2015 were as follows: Year Ended December 31, 2016 2015 Expected volatility 49% 44 - 47% Expected term (in years) 7 7 Risk-free interest rate 1.6 - 1.7% 1.9 - 2.0% Dividend yield — — Based on these assumptions, the weighted average fair value of options granted, per share, for the year ended December 31, 2016 and 2015 was $6.56 and $13.22, respectively. The fair value of each RSU, PSU and restricted stock award on the grant date is equal to the market price of RigNet’s stock on the date of grant. The weighted average fair value of RSUs, PSUs and restricted stock granted, per share, for the years ended December 31, 2017, 2016 and 2015 was $19.68, $12.45 and $30.68 respectively. The following table summarizes the Company’s stock option activity as of and for the years ended December 31, 2017, 2016 and 2015: Year Ended December 31, 2017 2016 2015 Number of Weighted Number of Weighted Number of Weighted (in thousands, except per share amounts) Balance, January 1, 499 $ 20.77 992 $ 20.40 947 $ 18.47 Granted — $ — 112 $ 12.80 244 $ 31.73 Exercised (70 ) $ 13.04 (223 ) $ 8.73 (80 ) $ 12.54 Forfeited (47 ) $ 27.11 (382 ) $ 26.29 (119 ) $ 30.62 Expired (1 ) $ 8.32 — $ — — $ — Balance, December 31, 381 $ 21.37 499 $ 20.77 992 $ 20.40 Exercisable, December 31, 224 $ 21.28 240 $ 18.02 579 $ 13.75 Year Ended December 31, 2017 2016 2015 (in thousands) Intrinsic value of options exercised $ 1,286 $ 591 $ 2,850 Fair value of options vested $ 837 $ 1,455 $ 884 The following table summarizes the Company’s RSU, PSU and restricted stock activity as of and for the years ended December 31, 2017 and 2016: Year Ended December 31, 2017 2016 (in thousands) Balance, January 1, 494 143 Granted 232 641 Vested (110 ) (55 ) Forfeited (180 ) (235 ) Balance, December 31, 436 494 The weighted average remaining contractual term in years for equity awards outstanding as of and for the years ended December 31, 2017, 2016 and 2015 was 1.7 years, 2.8 years and 3.7 years, respectively. At December 31, 2017 equity awards vested and expected to vest totaled 2.5 million with awards available for grant of approximately 2.6 million. The following is a summary of changes in unvested equity awards, including stock options, RSUs, PSUs and restricted stock, as of and for the years ended December 31, 2017, 2016 and 2015: Number of Weighted Average Grant (in thousands) Unvested equity awards, January 1, 2015 589 $ 20.06 Granted 336 $ 17.43 Vested (237 ) $ 17.94 Forfeited (182 ) $ 14.01 Unvested equity awards, December 31, 2015 506 $ 21.48 Granted 753 $ 11.57 Vested (169 ) $ 18.34 Forfeited (617 ) $ 13.97 Unvested equity awards, December 31, 2016 473 $ 16.62 Granted 232 $ 19.42 Vested (182 ) $ 14.16 Forfeited (227 ) $ 11.66 Unvested equity awards, December 31, 2017 296 $ 24.13

Income per Share

Income per Share	12 Months Ended
	Dec. 31, 2017
Earnings Per Share [Abstract]
Income per Share	Note 11—Income per Share Basic earnings per share (EPS) are computed by dividing net loss attributable to RigNet common stockholders by the number of basic shares outstanding. Basic shares equal the total of the common shares outstanding, weighted for the average days outstanding for the period. Basic shares exclude the dilutive effect of common shares that could potentially be issued due to exercise of stock options, vesting of restricted stock or RSUs. Diluted EPS is computed by dividing net loss attributable to RigNet common stockholders by the number of diluted shares outstanding. Diluted shares equal the total of the basic shares outstanding and all potentially issuable shares, other than antidilutive shares, if any, weighted for the average days outstanding for the period. The Company uses the treasury stock method to determine the dilutive effect. In periods when a net loss is reported, all common stock equivalents are excluded from the calculation because they would have an anti-dilutive effect, meaning the loss per share would be reduced. Therefore, in periods when a loss is reported, basic and dilutive loss per share are the same. The following table provides a reconciliation of the numerators and denominators of the basic and diluted per share computations for net income attributable to RigNet, Inc. common stockholders: Year Ended December 31, 2017 2016 2015 (in thousands) Net loss attributable to RigNet, Inc. $ (16,176 ) $ (11,507 ) $ (16,974 ) Weighted average shares outstanding, basic 18,009 17,768 17,534 Effect of dilutive securities — — — Weighted average shares outstanding, diluted 18,009 17,768 17,534 As of December 31, 2017, there were approximately 625,039 potentially issuable shares excluded from the Company’s calculation of diluted EPS. Of these, 263,662 shares were excluded due to the antidilutive position of the security. The remaining 361,377 shares were excluded because the Company incurred a loss in the period and to include them would have been anti-dilutive, meaning the loss per share would be reduced. As of December 31, 2016, there were approximately 1,120,400 potentially issuable shares excluded from the Company’s calculation of diluted EPS. Of these, 861,337 shares were excluded due to the antidilutive position of the security. The remaining 259,063 shares were excluded because the Company incurred a loss in the period and to include them would have been anti-dilutive, meaning the loss per share would be reduced.

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2017
Segment Reporting [Abstract]
Segment Information	Note 12—Segment Information Segment information has been prepared consistent with the components of the enterprise for which separate financial information is available and regularly evaluated by the chief operating decision-maker for the purpose of allocating resources and assessing performance. The Company previously operated under two reportable segments: Managed Services and Systems Integration (previously called SI&A). During the third quarter of 2017, after the Company completed the ESS acquisition, the Company reorganized its business and reportable segments. Applications and Internet-of-Things is now managed and presented as a separate segment, and was previously presented in the Managed Services segment. The reporting on this new segment will help track the Company’s progress related to this important area of focus within the business that is intended to enhance the value of the services the Company delivers to customers, including enhancing the value of the managed communications services the Company delivers to customers around the world. All historical segment financial data included herein has been recast to conform to the current year presentation. RigNet considers its business to consist of the following segments: • Managed Services. • Applications and Internet-of-Things & IoT). over-the-top machine-to-machine • Systems Integration. Corporate and eliminations primarily represents unallocated corporate office activities, interest expense, income taxes and eliminations. The Company’s business segment information as of and for the years ended December 31, 2017, 2016 and 2015 is presented below. Managed Applications and Internet-of- Things Systems Corporate and Consolidated (in thousands) 2017 Revenue $ 164,238 $ 15,626 $ 25,028 $ — $ 204,892 Cost of revenue (excluding depreciation and amortization) 101,681 10,751 18,734 — 131,166 Depreciation and amortization 23,202 1,738 2,438 3,467 30,845 Impairment of intangibles — — — — — Selling, general and administrative 16,841 1,685 1,403 32,940 52,869 Operating income (loss) $ 22,514 $ 1,452 $ 2,453 $ (36,407 ) $ (9,988 ) Total assets 181,157 32,464 16,708 (235 ) 230,094 Capital expenditures 17,066 198 — 645 17,909 2016 Revenue $ 192,538 $ 6,495 $ 21,590 $ — $ 220,623 Cost of revenue (excluding depreciation and amortization) 112,046 2,703 15,010 — 129,759 Depreciation and amortization 26,581 — 2,712 4,263 33,556 Impairment of goodwill, intangibles, property, plant and equipment — — — 397 397 Selling, general and administrative 28,422 268 2,665 28,007 59,362 Operating income (loss) $ 25,489 $ 3,524 $ 1,203 $ (32,667 ) $ (2,451 ) Total assets 203,048 — 26,169 1,755 230,972 Capital expenditures 13,794 — — 1,403 15,197 2015 Revenue $ 242,191 $ 7,530 $ 21,539 $ — $ 271,260 Cost of revenue (excluding depreciation and amortization) 129,453 3,023 30,762 — 163,238 Depreciation and amortization 26,967 — 3,104 2,400 32,471 Impairment of goodwill, intangibles, property, plant and equipment 14,262 — — — 14,262 Selling, general and administrative 35,787 268 4,120 32,466 72,641 Operating income (loss) $ 35,722 $ 4,239 $ (16,447 ) $ (34,866 ) $ (11,352 ) Total assets 254,443 — 42,850 (39,177 ) 258,116 Capital expenditures 27,099 — 227 5,364 32,690 The following table presents revenue earned from the Company’s domestic and international operations for the years ended December 31, 2017, 2016 and 2015. Revenue is based on the location where services are provided or goods are sold. Due to the mobile nature of RigNet’s customer base and the services provided, the Company works closely with its customers to ensure rig or vessel moves are closely monitored to ensure location of service information is properly reflected. Year Ended December 31, 2017 2016 2015 (in thousands) Domestic $ 63,460 $ 66,028 $ 80,134 International 141,432 154,595 191,126 Total $ 204,892 $ 220,623 $ 271,260 The following table presents goodwill and long-lived assets for the Company’s domestic and international operations as of December 31, 2017 and 2016. December 31, 2017 2016 (in thousands) Domestic $ 68,942 $ 27,682 International 58,895 70,101 Total $ 127,837 $ 97,783

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Note 13—Income Taxes Income Tax Expense The components of the income tax expense are: Year Ended December 31, 2017 2016 2015 (in thousands) Current: Federal $ — $ 23 $ 305 State 495 43 141 Foreign 2,638 4,386 7,619 Total current 3,133 4,452 8,065 Deferred: Federal (2,020 ) 458 (5,456 ) State (8 ) 419 (288 ) Foreign 2,367 496 88 Total deferred 339 1,373 (5,656 ) Income tax expense $ 3,472 $ 5,825 $ 2,409 The following table sets forth the components of income (loss) before income taxes: Year Ended December 31, 2017 2016 2015 (in thousands) Income (loss) before income taxes: United States $ (15,019 ) $ (18,361 ) $ (27,741 ) Foreign 2,294 12,889 13,490 $(12,725) $(5,472) $(14,251) Income tax expense differs from the amount computed by applying the statutory federal income tax rate of 35.0% to income (loss) before taxes as follows: Year Ended December 31, 2017 2016 2015 (in thousands) United States statutory federal income tax rate $ (4,454 ) $ (1,915 ) $ (4,988 ) Non-deductible (294 ) 290 131 Non-taxable — — (1,498 ) Noncash compensation (30 ) 761 349 U.S. tax on foreign earnings, net of tax credits (1,283 ) 587 50 Changes in valuation allowances (5,956 ) 6,681 10,358 Tax credits (699 ) (4,403 ) 410 State taxes 224 53 (130 ) Effect of operating in foreign jurisdictions 2,101 1,818 1,216 Deemed repatriation transition tax 3,807 — — Reduction of federal corporate tax rate 8,190 — — Changes in prior year estimates (26 ) 293 (58 ) Changes in uncertain tax benefits 1,798 1,243 (3,430 ) Revisions of deferred tax accounts (10 ) 313 98 Other 104 104 (99 ) Income tax expense $ 3,472 $ 5,825 $ 2,409 Deferred Tax Assets and Liabilities The Company’s deferred tax position reflects the net tax effects of the temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax reporting. Significant components of the deferred tax assets and liabilities are as follows: December 31, 2017 2016 (in thousands) Deferred tax assets: Net operating loss carryforwards $ 15,598 $ 16,474 Federal, state and foreign tax credits 17,833 21,972 Depreciation and amortization 13,009 17,907 Unrealized loss on functional currency 565 444 Allowance for doubtful accounts 704 1,390 Accruals not currently deductible 1,027 2,101 Stock-based compensation 812 1,012 Intercompany Interest 1,985 2,044 Other 351 78 Valuation allowance (45,129 ) (50,298 ) Total deferred tax assets 6,755 13,124 Deferred tax liabilities: Depreciation and amortization (605 ) (1,055 ) Tax on foreign earnings — (2,140 ) Other (280 ) (142 ) Total deferred tax liabilities (885 ) (3,337 ) Net deferred tax assets $ 5,870 $ 9,787 At December 31, 2017, on an as filed basis, the Company has U.S. domestic net operating loss carry forwards of approximately $9.0 million which will begin to expire in varying amounts in 2036, state net operating loss carry forwards of approximately $8.1 million which will expire in varying amounts beginning in 2023, and foreign net operating losses of $54.5 million of which almost all can be carried forward for an unlimited period. As of December 31, 2017, the Company, on an as filed basis, has U.S. domestic foreign tax credit carry forwards of $13.6 million which begin expiring in varying amounts in 2020. The amount reported on an as filed basis can differ from the amount recorded in the deferred tax assets of the Company’s financial statements due to the utilization or creation of assets in recording uncertain tax benefits. In assessing deferred tax assets, the Company considers whether a valuation allowance should be recorded for some or all of the deferred tax assets which may not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which the temporary differences become deductible. Among other items, the Company considers the scheduled reversal of deferred tax liabilities, projected future taxable income and available tax planning strategies. As of December 31, 2017, a valuation allowance of $45.1 million had been recorded. $27.5 million related to US federal and local deferred tax assets, $11.4 million related to Norway assets, $4.2 million related to Australia assets, $1.9 million related to United Kingdom assets, and $0.1 million related to other insignificant foreign jurisdictions that were not more likely than not to be realized. While the Company expects to realize the remaining net deferred tax assets, changes in future taxable income or in tax laws may alter this expectation and result in future increases to the valuation allowance. Previously the Company considered the earnings in its non-U.S. non-U.S. As of December 31, 2017, the Company continues to consider the excess amount for financial reporting over the tax basis of investments in its foreign subsidiaries to be indefinitely reinvested outside the United States. This determination is based on estimates that future domestic cash generation will be sufficient to meet future domestic cash needs and on its specific plan for reinvestment of the foreign subsidiaries’ undistributed earnings, with the exception of RigNet Qatar W.L.L. The Company has not provided for deferred taxes where the determination of any deferred taxes on the amount the Company considers indefinitely reinvested is not practicable. The Company has analyzed its global working capital and cash requirements and the potential tax liabilities attributable to a repatriation and has determined that it will be repatriating approximately $10.4 million from RigNet Qatar W.L.L. The Company has made a reasonable estimate of the tax effects of such repatriation, and determined that after the effects of the Transition Tax no additional liability should be recorded. Under SAB 118, we have provided a reasonable estimate of the Tax Act’s impact on its unremitted earnings. During the measurement period, the Company will continue to gather additional information to compute the full tax effects of the Tax Act on its unremitted earnings. Because the Company has asserted that all foreign undistributed earnings, excluding Qatar’s earnings, are permanently reinvested, no provision is recorded for the deferred tax liability related to other comprehensive income. Corporate Tax Reform On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act. The Tax Act makes broad and complex changes to the U.S. tax code, including, but not limited to, (1) reducing the U.S. federal corporate tax rate to 21 percent, (2) requiring a one-time The SEC staff issued SAB 118, which provides guidance on accounting for the tax effects of the Tax Act. SAB 118 provides a measurement period that should not extend beyond one year from the Tax Act enactment date for companies to complete the accounting under ASC 740. In accordance with SAB 118, a company must reflect the income tax effects of those aspects of the 2017 Tax Act for which the accounting under ASC 740 is complete. To the extent that a company’s accounting for certain income tax effects of the Tax Act is incomplete but it is able to determine a reasonable estimate, it must record a provisional estimate in the financial statements. If a company cannot determine a provisional estimate to be included in the financial statements, it should continue to apply ASC 740 on the basis of the provisions of the tax laws that were in effect immediately before the enactment of the Tax Act. For various reasons that are discussed below, the Company has not completed its accounting for the income tax effects of certain elements of the Tax Act. If the Company was able to make reasonable estimates of the effects of elements for which its analysis is not yet complete, the Company recorded provisional adjustments. If the Company was not yet able to make reasonable estimates of the impact of certain elements, the Company has not recorded any adjustments related to those elements and have continued accounting for them in accordance with ASC 740 on the basis of the tax laws in effect before the Tax Act. The Company’s accounting for the following elements of the Tax Act is incomplete. However, the Company was able to make reasonable estimates of certain effects and, therefore, recorded provisional adjustments as follows: Reduction of US Federal Corporate Tax Rate : Deemed Repatriation Transition Tax : non-U.S. Global Intangible Low Taxed Income (GILTI ): CFC-tested Uncertain Tax Benefits The Company evaluates its tax positions and recognizes only tax benefits that, more likely than not, will be sustained upon examination, including resolution of any related appeals or litigation processes, based on the technical merits of the position. The tax position is measured at the largest amount of benefit that has a greater than 50.0% likelihood of being realized upon settlement. At December 31, 2017, 2016 and 2015, the Company’s uncertain tax benefits totaling $18.8 million, $21.8 million and $19.3 million, respectively, are reported as other liabilities in the consolidated balance sheets. Changes in the Company’s gross unrecognized tax benefits are as follows: Year Ended December 31, 2017 2016 2015 (in thousands) Balance, January 1, $ 13,244 $ 15,718 $ 15,454 Additions for the current year tax — 794 1,501 Additions related to prior years 110 602 — Reductions related to settlements with taxing authorities — (3,701 ) (154 ) Reductions related to lapses in statue of limitations (327 ) (169 ) (1,083 ) Reductions related to prior years (3,390 ) — — Balance, December 31, $ 9,637 $ 13,244 $ 15,718 As of December 31, 2017, the Company’s gross unrecognized tax benefits which would impact the annual effective tax rate upon recognition were $9.6 million. In addition, as of December 31, 2017, the Company has recorded related assets, net of a valuation allowance of $2.3 million. The related asset might not be recognized in the same period as the contingent tax liability and like interest and penalties does have an impact on the annual effective tax rate. The Company has elected to include income tax related interest and penalties as a component of income tax expense. As of December 31, 2017, 2016 and 2015, the Company has accrued penalties and interest of approximately $9.2 million, $8.8 million and $7.3 million, respectively. The Company has recognized $0.3 million, $1.6 million and $0.1 million of interest and penalties in income tax expense for the years ended December 31, 2017, 2016 and 2015, respectively. To the extent interest and penalties are not assessed with respect to uncertain tax positions, accruals will be reduced and reflected as a reduction to income tax expense. The Company believes that it is reasonably possible that a decrease of up to $2.5 million in unrecognized tax benefits, including related interest and penalties, may be necessary within the coming year due to lapse in statute of limitations. The Company files income tax returns in the U.S. federal jurisdiction, and various states and foreign jurisdictions. All of the Company’s federal filings are still subject to tax examinations. With few exceptions, the Company is no longer subject to the foreign income tax examinations by tax authorities for years before 2007.

Supplemental Quarterly Financia

Supplemental Quarterly Financial Information (Unaudited)	12 Months Ended
	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Supplemental Quarterly Financial Information (Unaudited)	Note 14—Supplemental Quarterly Financial Information (Unaudited) Summarized quarterly supplemental consolidated financial information for 2017 and 2016 are as follows: 2017 Quarter Ended March 31 June 30 September 30 December 31 (in thousands, except per share data) Revenue $ 48,072 $ 49,162 $ 50,844 $ 56,814 Operating loss $ (1,067 ) $ (3,438 ) $ (2,951 ) $ (2,532 ) Net loss $ (1,987 ) $ (4,210 ) $ (4,193 ) $ (5,807 ) Net loss attributable to RigNet, Inc. $ (2,026 ) $ (4,249 ) $ (4,232 ) $ (5,669 ) Net loss per share attributable to $ (0.11 ) $ (0.24 ) $ (0.23 ) $ (0.31 ) Net loss per share attributable to $ (0.11 ) $ (0.24 ) $ (0.23 ) $ (0.31 ) Weighted average shares outstanding, basic 17,873 17,985 18,086 18,090 Weighted average shares outstanding, diluted 17,873 17,985 18,086 18,090 2016 Quarter Ended March 31 June 30 September 30 December 31 (in thousands, except per share data) Revenue $ 62,341 $ 54,911 $ 50,612 $ 52,759 Operating income (loss) $ 589 $ (3,294 ) $ 247 $ 7 Net loss $ (1,267 ) $ (4,856 ) $ (1,448 ) $ (3,726 ) Net loss attributable to RigNet, Inc. $ (1,333 ) $ (4,751 ) $ (1,658 ) $ (3,765 ) Net loss per share attributable to $ (0.08 ) $ (0.27 ) $ (0.09 ) $ (0.21 ) Net loss per share attributable to $ (0.08 ) $ (0.27 ) $ (0.09 ) $ (0.21 ) Weighted average shares outstanding, basic 17,613 17,634 17,782 17,833 Weighted average shares outstanding, diluted 17,613 17,634 17,782 17,833

Employee Benefits

Employee Benefits	12 Months Ended
	Dec. 31, 2017
Postemployment Benefits [Abstract]
Employee Benefits	Note 15 – Employee Benefits The Company maintains a 401(k)-plan pursuant to which eligible employees may make contributions through a payroll deduction. Effective January 1, 2018, the Company re-instated For the year ended December 31, 2015, the Company made matching cash contributions of 100% of each employee’s contribution up to 2.0% of that employee’s eligible compensation and 50% of each employee’s contribution between 2.0% and 6.0% of such employee’s eligible compensation, up to the maximum amount permitted by law. Effective January 1, 2016, the Company suspended the Company’s matching contributions under the 401(k) plan. The Company took this action in response to reduced oil and gas activity. The Company incurred expenses of none, none and $0.8 million for the years ended December 31, 2017, 2016 and 2015, respectively, for employer contributions.

Restructuring Costs - Cost Redu

Restructuring Costs - Cost Reduction Plans	12 Months Ended
	Dec. 31, 2017
Restructuring and Related Activities [Abstract]
Restructuring Costs - Cost Reduction Plans	Note 16 – Restructuring Costs – Cost Reduction Plans During the year ended December 31, 2017, the Company incurred a net pre-tax During the year ended December 31, 2016, the Company incurred net pre-tax During the year ended December 31, 2015, the Company instituted certain resource reallocation and additional cost reduction plans to vacate and eliminate redundant facilities and eliminate certain positions in response to deteriorating oil and gas industry market conditions including declining oil and gas prices, increased stacking and scrapping of offshore drilling rigs and declines in the Baker Hughes U.S. land rig count. The Company undertook these plans to reduce costs and improve the Company’s competitive position. For the year ended December 31, 2015, the Company incurred pre-tax

Executive Departure costs

Executive Departure costs	12 Months Ended
	Dec. 31, 2017
Compensation Related Costs [Abstract]
Executive Departure costs	Note 17 –Executive Departure costs Charles “Chip” Schneider, Senior Vice President and Chief Financial Officer, departed the Company effective December 27, 2017. In connection with the departure of Mr. Schneider, in the fourth quarter of 2017 the Company incurred a pre-tax Marty Jimmerson, the Company’s former CFO, served as Interim CEO and President from January 7, 2016 to May 31, 2016, to replace Mark Slaughter, the prior CEO and President. Mr. Jimmerson departed the Company on June 1, 2016. In connection with the departure of Mr. Slaughter, in the first quarter of 2016 the Company incurred a pre-tax

Business and Summary of Signi24

Business and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Nature of Business	Nature of Business RigNet, Inc. (the Company or RigNet) is a global technology company that provides customized communications services, applications and cybersecurity solutions enhancing customer decision making and business performance. The Company provides solutions ranging from fully-managed voice and data networks to more advanced networks and applications that include video conferencing, asset and weather monitoring, real-time data services and cybersecurity primarily under a multi-service recurring revenue model. Customers use a private extranet to manage information flows and execute mission-critical operations primarily in remote areas where conventional telecommunications infrastructure is either unreliable or unavailable. RigNet offers clients what is often the sole means of communications for their remote operations.
Basis of Presentation	Basis of Presentation The Company presents its financial statements in accordance with generally accepted accounting principles in the United States (U.S. GAAP).
Principles of Consolidation and Reporting	Principles of Consolidation and Reporting The Company’s consolidated financial statements include the accounts of RigNet, Inc. and all subsidiaries thereof. All intercompany accounts and transactions have been eliminated in consolidation. As of December 31, 2017, 2016 and 2015, non-controlling
Use of Estimates in Preparation of Financial Statements	Use of Estimates in Preparation of Financial Statements The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting periods, as well as certain financial statement disclosures. The estimates that are particularly significant to the financial statements include estimates related to the Company’s use of the percentage-of-completion
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents consist of cash on-hand
Restricted Cash	Restricted Cash As of December 31, 2017 and 2016, the Company had restricted cash of $0.1 million and $1.5 million, in current and long-term assets, respectively. The restricted cash in long-term assets is primarily used to collateralize a performance bond in the Managed Services segment (see Note 6 – “Long-Term Debtâ€). The restricted cash in current assets as of December 31, 2016 is an escrowed portion of the purchase price for the acquisition of Orgtec S.A.P.I. de C.V., d.b.a TECNOR (TECNOR).
Accounts Receivable	Accounts Receivable Trade accounts receivable are recognized as customers are billed in accordance with customer contractual agreements. The Company reports an allowance for doubtful accounts for probable credit losses existing in accounts receivable. Management determines the allowance based on a review of currently outstanding receivables and the Company’s historical write-off
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment consists of (i) telecommunication and computer equipment, (ii) furniture and other office equipment, (iii) leasehold improvements, (iv) building and (v) land. All property, plant and equipment, excluding land, is depreciated and stated at acquisition cost net of accumulated depreciation. Depreciation is provided using the straight-line method over the expected useful lives of the respective assets, which range from one to ten years. The Company assesses the value of property, plant and equipment for impairment when the Company determines that events and circumstances indicate that the recorded carrying value may not be recoverable. An impairment is determined by comparing estimated future net undiscounted cash flows to the carrying value at the time of the assessment. No impairment to property, plant and equipment was recorded in the years ended December 31, 2017 and 2016. During the year ended December 31, 2015, the Company impaired property, plant and equipment by $1.7 million, as the carrying value exceeded fair value, as a result of declines in the U.S. land rig counts. Maintenance and repair costs are charged to expense when incurred.
Intangibles	Intangibles Intangibles consist of customer relationships, covenants-not-to-compete, internal-use No impairment to intangibles was recorded in the year ended December 31, 2017 In June 2016, the Company identified a triggering event for a license in Kazakhstan associated with a decline in cash flow projections, which resulted in a $0.4 million impairment of licenses in the Corporate segment, which was the full amount of the Company’s intangibles within Kazakhstan. In July 2015, the Company identified a triggering event in the North America Land reporting unit associated with a significant decline in U.S. land rig counts since December 2014. This circumstance resulted in a reduction in the Company’s cash flow projections during the revision of internal forecasts. In July 2015, the Company conducted an intangibles impairment test and as a result of such test, recognized a $1.7 million impairment of customer relationships, the full amount within the North America Land reporting unit, which reports through the Managed Services reportable segment.
Goodwill	Goodwill Goodwill resulted from prior acquisitions as the consideration paid for the acquired businesses exceeded the fair value of acquired identifiable net tangible and intangible assets. Goodwill is reviewed for impairment at least annually, as of July 31, with additional evaluations being performed when events or circumstances indicate that the carrying value of these assets may not be recoverable. Goodwill impairment is determined using a two-step If the fair value of a reporting unit is less than its book value, goodwill of the reporting unit is considered to be impaired and the second step of the impairment test is performed to measure the amount of impairment loss, if any. The second step of the impairment test compares the implied fair value of the reporting unit’s goodwill with the book value of that goodwill. If the book value of the reporting unit’s goodwill exceeds the implied fair value of that goodwill, an impairment loss is recognized in an amount equal to that excess. The implied fair value of goodwill is determined by allocating the reporting unit’s fair value to all of its assets and liabilities other than goodwill in the same manner as a purchase price allocation. Any impairment in the value of goodwill is charged to earnings in the period such impairment is determined. The Company performs its annual impairment test on July 31, with the most recent annual test being performed as of July 31, 2017. The July 31, 2017 and 2016 tests resulted in no impairment as the fair value of each reporting unit substantially exceeded the carrying value plus goodwill of that reporting unit. As of November 30, 2017, the Company’s latest completed interim goodwill impairment testing, the fair values of the Company’s reporting units are substantially in excess of their carrying values. As such, the test resulted in no impairment. The November 30, 2017 interim test was conducted due to a change in segments after the Company completed the acquisition of ESS. As a result of the July 2015 annual impairment test, the Company recognized $10.9 million of impairment of goodwill, the full amount within the North America Land reporting unit, which reports through the Managed Services reportable segment. The North America Land reporting unit was adversely impacted by a significant decline in U.S. land rig counts since December 2014. This decline resulted in reduced internal cash flow projections causing the estimated fair value of the North America Land reporting unit to be below its carrying value. The fair value of all other reporting units substantially exceeded the carrying value plus goodwill of that reporting unit. As of December 31, 2017 and 2016, goodwill was $37.1 million and $22.0 million, respectively. In addition to the impact of acquisitions and impairments, goodwill increases or decreases in value due to the effect of foreign currency translation.
Long-Term Debt	Long-Term Debt Long-term debt is recognized in the consolidated balance sheets, net of costs incurred, in connection with obtaining debt financing. Debt financing costs are deferred and reported as a reduction to the principal amount of the debt. Such costs are amortized over the life of the debt using the effective interest rate method and included in interest expense in the Company’s consolidated financial statements.
Revenue Recognition - General	Revenue Recognition – General All revenue is recognized when persuasive evidence of an arrangement exists, the service is complete, the amount is fixed or determinable and collectability is reasonably assured. Network service fee revenue is based on fixed-price, day-rate
Revenue Recognition - Systems Integration	Revenue Recognition – Systems Integration Revenues related to long-term, fixed-price Systems Integration contracts for customized network solutions are recognized using the percentage-of-completion cost-to-cost The Company reviews all material contracts on a monthly basis and revises the estimates as appropriate for developments such as, providing services, purchasing third-party materials and equipment at costs differing from those previously estimated, and incurring or expecting to incur schedule issues. Changes in estimated final contract revenues and costs can either increase or decrease the final estimated contract profit or loss. Profits are recorded in the period in which a change in estimate is recognized, based on progress achieved through the period of change. Anticipated losses on contracts are recorded in full in the period in which they become evident. Revenue recognized in excess of amounts billed is classified as a current asset under costs and estimated earnings in excess of billings on uncompleted contracts. As of December 31, 2017 and 2016, the amount of costs and estimated earnings in excess of billings on uncompleted contracts related to Systems Integration projects was $2.4 million. Amounts billed to customers in excess of revenue recognized to date are classified as a current liability under deferred revenue. Under long-term contracts, amounts recorded in costs and estimated earnings in excess of billings on uncompleted contracts may not be realized or paid, respectively, within a one-year When estimating the amount of final contract profit or loss, the Company includes certain probable claims and unapproved change orders to customers as adjustments to final estimated revenues and probable claims to vendors, subcontractors and others as adjustments to final estimated costs. The Company records revenue on contracts relating to certain probable claims and unapproved change orders by including in revenue an amount less than or equal to the amount of costs incurred to date relating to these probable claims and unapproved change orders, thus recognizing no profit until such time as claims are finalized or change orders are approved. The amount of unapproved change orders and claim revenues is included in the Company’s Consolidated Balance Sheets as part of costs and estimated earnings in excess of billings on uncompleted contracts. As new facts become known, an adjustment to the estimated recovery is made and reflected in the current period. Besides the Systems Integration contractual dispute issue discussed in Note 9, there were no other material contract penalties, claims, settlements or changes in contract estimates and no amounts were netted in revenue during the years ended 2017, 2016, and 2015.
Stock-Based Compensation	Stock-Based Compensation The Company recognizes expense for stock-based compensation based on the fair value of options and restricted stock on the grant date of the awards. Fair value of options on the grant date is determined using the Black-Scholes model, which requires judgment in estimating the expected term of the option, risk-free interest rate, expected volatility of the Company’s stock and dividend yield of the option. Fair value of restricted stock, restricted stock units and performance share units on the grant date is equal to the market price of RigNet’s common stock on the date of grant. The Company’s policy is to recognize compensation expense for service-based awards on a straight-line basis over the requisite service period of the entire award. Stock-based compensation expense is based on awards ultimately expected to vest.
Taxes	Taxes Current income taxes are determined based on the tax laws and rates in effect in the jurisdictions and countries that the Company operates in and revenue is earned. Deferred income taxes reflect the tax effect of net operating losses, foreign tax credits and the tax effects of temporary differences between the carrying amount of assets and liabilities for financial statement and income tax purposes, as determined under enacted tax laws and rates. Valuation allowances are established when management determines that it is more likely than not that some portion or the entire deferred tax asset will not be realized. U.S Federal deferred tax liabilities are recorded for the unremitted earnings of foreign subsidiaries that are not permanently reinvested, net of potential foreign tax credits; otherwise, no U.S. Federal deferred taxes are provided on foreign subsidiaries. The financial effect of changes in tax laws or rates is accounted for in the period of enactment. From time to time, the Company engages in transactions in which the tax consequences may be subject to uncertainty. In the normal course of business, the Company prepares and files tax returns based on interpretation of tax laws and regulations, which are subject to examination by various taxing authorities. Such examinations may result in future tax and interest assessments by these taxing authorities. The Company evaluates its tax positions and recognize only tax benefits for financial purposes that, more likely than not, will be sustained upon examination, including resolutions of any related appeals or litigation processes, based on the technical merits of the position. The Company has elected to include income tax related interest and penalties as a component of income tax expense. On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act (the Tax Act). In response, the SEC staff issued SAB 118, which provides guidance on accounting for the tax effects of the Tax Act. SAB 118 provides a measurement period that should not extend beyond one year from the Tax Act enactment date for companies to complete the accounting under ASC 740. In accordance with SAB 118, a company must reflect the income tax effects of those aspects of the Act for which the accounting under ASC 740 is complete. To the extent that a company’s accounting for certain income tax effects of the Tax Act is incomplete but it is able to determine a reasonable estimate, it must record a provisional estimate in the financial statements. If a company cannot determine a provisional estimate to be included in the financial statements, it should continue to apply ASC 740 on the basis of the provisions of the tax laws that were in effect immediately before the enactment of the Tax Act.
Foreign Currency Translation	Foreign Currency Translation The U.S. dollar serves as the currency of measurement and reporting for the Company’s consolidated financial statements. The Company has certain subsidiaries with functional currencies of Norwegian kroner, British pound sterling, or Brazilian real. The functional currency of all the Company’s other subsidiaries is the U.S. dollar. Transactions occurring in currencies other than the functional currency of a subsidiary have been converted to the functional currency of that subsidiary at the exchange rate in effect at the transaction date with resulting gains and losses included in current earnings. Carrying values of monetary assets and liabilities in functional currencies other than U.S. dollars have been translated to U.S. dollars based on the U.S. exchange rate at the balance sheet date and the resulting foreign currency translation gain or loss is included in comprehensive income (loss) in the consolidated financial statements.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update No. 2014-09 2014-09), No. 2015-14 2015-14), No. 2016-08 2016-08), No. 2016-10 2016-10) No. 2016-12 2016-12), In February 2016, the FASB issued Accounting Standards Update No. 2016-02 2016-02), In August 2016, the FASB issued Accounting Standards Update No. 2016-15 2016-15), In October 2016, the FASB issued Accounting Standards Update No. 2016-16 2016-16), In November 2016, the FASB issued Accounting Standards Update No. 2016-18 2016-18),

Business and Credit Concentra25

Business and Credit Concentrations (Tables)	12 Months Ended
	Dec. 31, 2017
Risks and Uncertainties [Abstract]
Accounts Receivables, Allowance for Doubtful Accounts	The Company provides an allowance for doubtful accounts which is adjusted when the Company becomes aware of a specific customer’s inability to meet its financial obligations or as a result of changes in the overall aging of accounts receivable. Year Ended December 31, 2017 2016 2015 (in thousands) Accounts receivable $ 51,996 $ 52,996 $ 66,077 Allowance for doubtful accounts, January 1, (4,324 ) (3,972 ) (3,576 ) Current year provision for doubtful accounts (366 ) (1,095 ) (912 ) Write-offs 1,715 743 516 Allowance for doubtful accounts, December 31, (2,975 ) (4,324 ) (3,972 ) Accounts receivable, net $ 49,021 $ 48,672 $ 62,105

Business Combinations (Tables)

Business Combinations (Tables)	12 Months Ended
	Dec. 31, 2017
Energy Satellite Services [Member]
Summary of Allocation of Purchase Price	The acquisition of ESS, including goodwill, is included in the Company’s consolidated financial statements as of the acquisition date and is reflected in the Applications and Internet-of-Things Weighted Average Fair Market Values (in thousands) Accounts Receivable $ 392 Property and equipment 1,000 Covenant Not to Compete 5 3,040 Customer Relationships 7 9,870 Total identifiable intangible assets 12,910 Goodwill 8,465 Accounts Payable (567 ) Total purchase price $ 22,200
Data Technology Solutions [Member]
Summary of Allocation of Purchase Price	The acquisition of DTS, including goodwill, is included in the Company’s consolidated financial statements as of the acquisition date and is reflected in the Managed Services segment. Fair Market Values (in thousands) Property and equipment $ 4,553 Goodwill 704 Accounts Payable (152 ) Total purchase price $ 5,105
Cyphre Security Solutions [Member]
Summary of Allocation of Purchase Price	The acquisition of Cyphre, including goodwill, is included in the Company’s consolidated financial statements as of the acquisition date and is reflected in the Applications and Internet-of-Things Weighted Average Fair Market Values (in thousands) Property and equipment $ 18 Trade Name 7 1,590 Technology 7 5,571 Customer Relationships 7 332 Total identifiable intangible assets 7,493 Goodwill 4,591 Accrued Expenses (100 ) Total purchase price $ 12,002 (a) (a) Includes $3.8 million in contingent consideration estimated as of the date of acquisition.
Supplemental Pro Forma Information	The following table represents supplemental pro forma information as if the 2017 acquisitions had occurred on January 1, 2016. Year Ended December 31, 2017 2016 (in thousands, except per share amounts) Revenue $ 214,899 $ 237,352 Expenses 228,105 242,483 Net loss $ (13,206 ) $ (5,131 ) Net loss attributable to $ (13,185 ) $ (5,341 ) Net loss per share attributable to Basic $ (0.73 ) $ (0.30 ) Diluted $ (0.73 ) $ (0.30 )
Tecnor [Member]
Summary of Allocation of Purchase Price	The acquisition of TECNOR, including goodwill, is included in the Company’s consolidated financial statements as of the acquisition date and is reflected in the Managed Services segment. Weighted Average Fair Market Values (in thousands) Accounts Receivable $ 2,672 Other assets 1,280 Property and equipment 809 Backlog 2 366 Customer Relationships 7 2,210 Total identifiable intangible assets 2,576 Goodwill 6,465 Accounts Payable (1,914 ) Accrued Expenses (494 ) Total purchase price $ 11,394 (a) (a) Includes a $6.5 million contingent consideration earn-out,
Supplemental Pro Forma Information	The following table represents supplemental pro forma information as if the TECNOR acquisition had occurred on January 1, 2015. Pro forma adjustments include: • Adjust interest expense to remove interest on debt instrument previously held by TECNOR • Remove nonrecurring transaction costs incurred in 2015 prior to acquisition Year Ended December 31, 2016 2015 (in thousands, except per share amounts) Revenue $ 221,658 $ 285,329 Expenses 232,752 299,879 Net loss $ (11,094 ) $ (14,550 ) Net loss attributable to $ (11,304 ) $ (14,864 ) Net loss per share attributable to Basic $ (0.64 ) $ (0.85 ) Diluted $ (0.64 ) $ (0.85 )
Summary of Consolidated Statements of Comprehensive Income	TECNOR’s revenue and net loss included in the Consolidated Statements of Comprehensive Loss for the year ended December 31, 2016 are presented in the following table. These amounts represent actual amounts commencing immediately after the acquisition, February 4, 2016, through the year ended December 31, 2016 (in thousands): Year Ended Revenue 8,299 Net loss (287 )

Goodwill and Intangibles (Table

Goodwill and Intangibles (Tables)	12 Months Ended
	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill Balances and Changes	Goodwill balances and changes therein, by reportable segment, as of and for the years ended December 31, 2017 and 2016 are presented below. All historical segment financial data included herein has been recast to conform to the current year presentation. Managed Applications and Internet-of- Things Total (in thousands) Balance, January 1, 2016 $ 17,391 $ 667 $ 18,058 Acquisition of Tecnor 6,465 — 6,465 Foreign currency translation (2,525 ) — (2,525 ) Balance, December 31, 2016 21,331 667 21,998 Acquisition of Cyphre, DTS and ESS 704 13,056 13,760 Foreign currency translation 1,330 — 1,330 Balance, December 31, 2017 $ 23,365 $ 13,723 $ 37,088
Intangibles Activities	The following table reflects intangibles activities for the years ended December 31, 2017 and 2016: Brand Name Backlog Customer Software Licenses Technology Covenant Not Total (in thousands, except estimated lives) Intangibles Acquired 4,353 2,916 20,025 12,471 2,500 — — 42,265 Accumulated amortization and foreign currency translation, January 1, 2016 (2,288 ) (2,841 ) (14,296 ) (3,242 ) (624 ) — — (23,291 ) Balance, January 1, 2016 2,065 75 5,729 9,229 1,876 — — 18,974 Additions — 366 2,210 1,144 — — — 3,720 Impairment — — — — (397 ) — — (397 ) Amortization expense (490 ) (224 ) (1,646 ) (2,550 ) (313 ) — — (5,223 ) Foreign currency translation (342 ) (4 ) (901 ) 201 — — — (1,046 ) Balance, December 31, 2016 1,233 213 5,392 8,024 1,166 — — 16,028 Additions 1,590 — 10,202 79 — 5,903 3,040 20,814 Amortization expense (669 ) (181 ) (2,302 ) (2,517 ) (286 ) (551 ) (253 ) (6,759 ) Foreign currency translation 91 (15 ) 209 37 — — — 322 Balance, December 31, 2017 $ 2,245 $ 17 $ 13,501 $ 5,623 $ 880 $ 5,352 $ 2,787 $ 30,405 Weighted average estimated lives (years) 7.0 1.0 7.0 5.0 7.0 5.0 7.0
Amortization Expense for Intangibles	The following table sets forth amortization expense for intangibles over the next five years (in thousands): 2018 6,939 2019 5,959 2020 4,952 2021 4,574 2022 4,275 Thereafter 3,706 $ 30,405

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, plant and equipment consists of the following: Estimated December 31, Lives 2017 2016 (in years) (in thousands) Telecommunication and computer equipment 1 - 5 $ 152,480 $ 131,401 Furniture and other 5 - 7 9,544 6,968 Building 10 4,627 3,901 Land — 1,444 1,240 168,095 143,510 Less: Accumulated depreciation (107,751 ) (83,753 ) $ 60,344 $ 59,757

Long-Term Debt (Tables)

Long-Term Debt (Tables)	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Credit Facilities and Long-Term Debt Arrangements	As of December 31, 2017 and 2016, the following credit facilities and long-term debt arrangements with financial institutions were in place: December 31, 2017 2016 (in thousands) Term loan, net of unamortized deferred financing costs $ 14,503 $ 34,053 Revolving loan 43,400 27,000 Capital lease 211 415 58,114 61,468 Less: Current maturities of long-term debt (4,814 ) (8,399 ) Current maturities of capital lease (127 ) (79 ) $ 53,173 $ 52,990
Aggregate Principal Maturities of Long-Term Debt	The following table sets forth the aggregate principal maturities of long-term debt, net of deferred financing cost amortization (in thousands): 2018 4,941 2019 4,914 2020 48,259 Total debt, including current maturities $ 58,114

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Future Minimum Lease Obligations	As of December 31, 2017, future minimum lease obligations were as follows (in thousands): 2018 2,394 2019 1,454 2020 886 2021 469 2022 483 Thereafter 1,268 $ 6,954
Commercial Commitments Related to Satellite and Network Services	As of December 31, 2017, the Company had the following commercial commitments related to satellite and network services (in thousands): 2018 16,893 2019 7,274 2020 658 2021 641 2022 641 $ 26,107

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Assumptions Used for Stock Option Grants	The assumptions used for grants made in the years ended December 31, 2016 and 2015 were as follows: Year Ended December 31, 2016 2015 Expected volatility 49% 44 - 47% Expected term (in years) 7 7 Risk-free interest rate 1.6 - 1.7% 1.9 - 2.0% Dividend yield — —
Summary of Stock Option Activity	The following table summarizes the Company’s stock option activity as of and for the years ended December 31, 2017, 2016 and 2015: Year Ended December 31, 2017 2016 2015 Number of Weighted Number of Weighted Number of Weighted (in thousands, except per share amounts) Balance, January 1, 499 $ 20.77 992 $ 20.40 947 $ 18.47 Granted — $ — 112 $ 12.80 244 $ 31.73 Exercised (70 ) $ 13.04 (223 ) $ 8.73 (80 ) $ 12.54 Forfeited (47 ) $ 27.11 (382 ) $ 26.29 (119 ) $ 30.62 Expired (1 ) $ 8.32 — $ — — $ — Balance, December 31, 381 $ 21.37 499 $ 20.77 992 $ 20.40 Exercisable, December 31, 224 $ 21.28 240 $ 18.02 579 $ 13.75 Year Ended December 31, 2017 2016 2015 (in thousands) Intrinsic value of options exercised $ 1,286 $ 591 $ 2,850 Fair value of options vested $ 837 $ 1,455 $ 884
Summary of Company's RSU, PSU and Restricted Stock Activity	The following table summarizes the Company’s RSU, PSU and restricted stock activity as of and for the years ended December 31, 2017 and 2016: Year Ended December 31, 2017 2016 (in thousands) Balance, January 1, 494 143 Granted 232 641 Vested (110 ) (55 ) Forfeited (180 ) (235 ) Balance, December 31, 436 494
Summary of Changes in Unvested Equity Awards, including Stock Options, RSUs, PSUs and Restricted Stock	The weighted average remaining contractual term in years for equity awards outstanding as of and for the years ended December 31, 2017, 2016 and 2015 was 1.7 years, 2.8 years and 3.7 years, respectively. At December 31, 2017 equity awards vested and expected to vest totaled 2.5 million with awards available for grant of approximately 2.6 million. The following is a summary of changes in unvested equity awards, including stock options, RSUs, PSUs and restricted stock, as of and for the years ended December 31, 2017, 2016 and 2015: Number of Weighted Average Grant (in thousands) Unvested equity awards, January 1, 2015 589 $ 20.06 Granted 336 $ 17.43 Vested (237 ) $ 17.94 Forfeited (182 ) $ 14.01 Unvested equity awards, December 31, 2015 506 $ 21.48 Granted 753 $ 11.57 Vested (169 ) $ 18.34 Forfeited (617 ) $ 13.97 Unvested equity awards, December 31, 2016 473 $ 16.62 Granted 232 $ 19.42 Vested (182 ) $ 14.16 Forfeited (227 ) $ 11.66 Unvested equity awards, December 31, 2017 296 $ 24.13

Income per Share (Tables)

Income per Share (Tables)	12 Months Ended
	Dec. 31, 2017
Earnings Per Share [Abstract]
Reconciliation of the Numerators and Denominators of the Basic and Diluted Per Share	The following table provides a reconciliation of the numerators and denominators of the basic and diluted per share computations for net income attributable to RigNet, Inc. common stockholders: Year Ended December 31, 2017 2016 2015 (in thousands) Net loss attributable to RigNet, Inc. $ (16,176 ) $ (11,507 ) $ (16,974 ) Weighted average shares outstanding, basic 18,009 17,768 17,534 Effect of dilutive securities — — — Weighted average shares outstanding, diluted 18,009 17,768 17,534

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2017
Segment Reporting [Abstract]
Company's Business Segment Information	The Company’s business segment information as of and for the years ended December 31, 2017, 2016 and 2015 is presented below. Managed Applications and Internet-of- Things Systems Corporate and Consolidated (in thousands) 2017 Revenue $ 164,238 $ 15,626 $ 25,028 $ — $ 204,892 Cost of revenue (excluding depreciation and amortization) 101,681 10,751 18,734 — 131,166 Depreciation and amortization 23,202 1,738 2,438 3,467 30,845 Impairment of intangibles — — — — — Selling, general and administrative 16,841 1,685 1,403 32,940 52,869 Operating income (loss) $ 22,514 $ 1,452 $ 2,453 $ (36,407 ) $ (9,988 ) Total assets 181,157 32,464 16,708 (235 ) 230,094 Capital expenditures 17,066 198 — 645 17,909 2016 Revenue $ 192,538 $ 6,495 $ 21,590 $ — $ 220,623 Cost of revenue (excluding depreciation and amortization) 112,046 2,703 15,010 — 129,759 Depreciation and amortization 26,581 — 2,712 4,263 33,556 Impairment of goodwill, intangibles, property, plant and equipment — — — 397 397 Selling, general and administrative 28,422 268 2,665 28,007 59,362 Operating income (loss) $ 25,489 $ 3,524 $ 1,203 $ (32,667 ) $ (2,451 ) Total assets 203,048 — 26,169 1,755 230,972 Capital expenditures 13,794 — — 1,403 15,197 2015 Revenue $ 242,191 $ 7,530 $ 21,539 $ — $ 271,260 Cost of revenue (excluding depreciation and amortization) 129,453 3,023 30,762 — 163,238 Depreciation and amortization 26,967 — 3,104 2,400 32,471 Impairment of goodwill, intangibles, property, plant and equipment 14,262 — — — 14,262 Selling, general and administrative 35,787 268 4,120 32,466 72,641 Operating income (loss) $ 35,722 $ 4,239 $ (16,447 ) $ (34,866 ) $ (11,352 ) Total assets 254,443 — 42,850 (39,177 ) 258,116 Capital expenditures 27,099 — 227 5,364 32,690
Revenue Earned from Domestic and International Operations	The following table presents revenue earned from the Company’s domestic and international operations for the years ended December 31, 2017, 2016 and 2015. Revenue is based on the location where services are provided or goods are sold. Due to the mobile nature of RigNet’s customer base and the services provided, the Company works closely with its customers to ensure rig or vessel moves are closely monitored to ensure location of service information is properly reflected. Year Ended December 31, 2017 2016 2015 (in thousands) Domestic $ 63,460 $ 66,028 $ 80,134 International 141,432 154,595 191,126 Total $ 204,892 $ 220,623 $ 271,260
Long - Lived Assets for Both Domestic and International Operations	The following table presents goodwill and long-lived assets for the Company’s domestic and international operations as of December 31, 2017 and 2016. December 31, 2017 2016 (in thousands) Domestic $ 68,942 $ 27,682 International 58,895 70,101 Total $ 127,837 $ 97,783

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Components of the Income Tax Expense	The components of the income tax expense are: Year Ended December 31, 2017 2016 2015 (in thousands) Current: Federal $ — $ 23 $ 305 State 495 43 141 Foreign 2,638 4,386 7,619 Total current 3,133 4,452 8,065 Deferred: Federal (2,020 ) 458 (5,456 ) State (8 ) 419 (288 ) Foreign 2,367 496 88 Total deferred 339 1,373 (5,656 ) Income tax expense $ 3,472 $ 5,825 $ 2,409
Income (Loss) Before Income Taxes	The following table sets forth the components of income (loss) before income taxes: Year Ended December 31, 2017 2016 2015 (in thousands) Income (loss) before income taxes: United States $ (15,019 ) $ (18,361 ) $ (27,741 ) Foreign 2,294 12,889 13,490 $(12,725) $(5,472) $(14,251)
Income Tax Expense	Income tax expense differs from the amount computed by applying the statutory federal income tax rate of 35.0% to income (loss) before taxes as follows: Year Ended December 31, 2017 2016 2015 (in thousands) United States statutory federal income tax rate $ (4,454 ) $ (1,915 ) $ (4,988 ) Non-deductible (294 ) 290 131 Non-taxable — — (1,498 ) Noncash compensation (30 ) 761 349 U.S. tax on foreign earnings, net of tax credits (1,283 ) 587 50 Changes in valuation allowances (5,956 ) 6,681 10,358 Tax credits (699 ) (4,403 ) 410 State taxes 224 53 (130 ) Effect of operating in foreign jurisdictions 2,101 1,818 1,216 Deemed repatriation transition tax 3,807 — — Reduction of federal corporate tax rate 8,190 — — Changes in prior year estimates (26 ) 293 (58 ) Changes in uncertain tax benefits 1,798 1,243 (3,430 ) Revisions of deferred tax accounts (10 ) 313 98 Other 104 104 (99 ) Income tax expense $ 3,472 $ 5,825 $ 2,409
Significant Components of the Deferred Tax Assets and Liabilities	The Company’s deferred tax position reflects the net tax effects of the temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax reporting. Significant components of the deferred tax assets and liabilities are as follows: December 31, 2017 2016 (in thousands) Deferred tax assets: Net operating loss carryforwards $ 15,598 $ 16,474 Federal, state and foreign tax credits 17,833 21,972 Depreciation and amortization 13,009 17,907 Unrealized loss on functional currency 565 444 Allowance for doubtful accounts 704 1,390 Accruals not currently deductible 1,027 2,101 Stock-based compensation 812 1,012 Intercompany Interest 1,985 2,044 Other 351 78 Valuation allowance (45,129 ) (50,298 ) Total deferred tax assets 6,755 13,124 Deferred tax liabilities: Depreciation and amortization (605 ) (1,055 ) Tax on foreign earnings — (2,140 ) Other (280 ) (142 ) Total deferred tax liabilities (885 ) (3,337 ) Net deferred tax assets $ 5,870 $ 9,787
Changes in the Company's Gross Unrecognized Tax Benefits	Changes in the Company’s gross unrecognized tax benefits are as follows: Year Ended December 31, 2017 2016 2015 (in thousands) Balance, January 1, $ 13,244 $ 15,718 $ 15,454 Additions for the current year tax — 794 1,501 Additions related to prior years 110 602 — Reductions related to settlements with taxing authorities — (3,701 ) (154 ) Reductions related to lapses in statue of limitations (327 ) (169 ) (1,083 ) Reductions related to prior years (3,390 ) — — Balance, December 31, $ 9,637 $ 13,244 $ 15,718

Supplemental Quarterly Financ35

Supplemental Quarterly Financial Information (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Summarized Quarterly Supplemental Consolidated Financial Information	Summarized quarterly supplemental consolidated financial information for 2017 and 2016 are as follows: 2017 Quarter Ended March 31 June 30 September 30 December 31 (in thousands, except per share data) Revenue $ 48,072 $ 49,162 $ 50,844 $ 56,814 Operating loss $ (1,067 ) $ (3,438 ) $ (2,951 ) $ (2,532 ) Net loss $ (1,987 ) $ (4,210 ) $ (4,193 ) $ (5,807 ) Net loss attributable to RigNet, Inc. $ (2,026 ) $ (4,249 ) $ (4,232 ) $ (5,669 ) Net loss per share attributable to $ (0.11 ) $ (0.24 ) $ (0.23 ) $ (0.31 ) Net loss per share attributable to $ (0.11 ) $ (0.24 ) $ (0.23 ) $ (0.31 ) Weighted average shares outstanding, basic 17,873 17,985 18,086 18,090 Weighted average shares outstanding, diluted 17,873 17,985 18,086 18,090 2016 Quarter Ended March 31 June 30 September 30 December 31 (in thousands, except per share data) Revenue $ 62,341 $ 54,911 $ 50,612 $ 52,759 Operating income (loss) $ 589 $ (3,294 ) $ 247 $ 7 Net loss $ (1,267 ) $ (4,856 ) $ (1,448 ) $ (3,726 ) Net loss attributable to RigNet, Inc. $ (1,333 ) $ (4,751 ) $ (1,658 ) $ (3,765 ) Net loss per share attributable to $ (0.08 ) $ (0.27 ) $ (0.09 ) $ (0.21 ) Net loss per share attributable to $ (0.08 ) $ (0.27 ) $ (0.09 ) $ (0.21 ) Weighted average shares outstanding, basic 17,613 17,634 17,782 17,833 Weighted average shares outstanding, diluted 17,613 17,634 17,782 17,833

Business and Summary of Signi36

Business and Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	1 Months Ended		12 Months Ended
	Jun. 30, 2016	Jul. 31, 2015	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Summary Of Significant Accounting Policies [Line Items]
Maturities of cash on-hand and highly-liquid investments purchased				Three months or less
Restricted cash, current				$ 43,000	$ 139,000
Restricted cash, long-term assets				$ 1,500,000	1,514,000
Outstanding period for receivables and balances to be reviewed individually				Greater than 120 days
Impairment of property, plant and equipment				$ 0	0	$ 1,670,000
Impairment of intangibles				0
Goodwill				37,088,000	21,998,000	18,058,000
Costs and estimated earnings in excess of billings on uncompleted contracts				$ 2,400,000	2,400,000
Statutory federal income tax rate				35.00%
Managed Services [Member]
Summary Of Significant Accounting Policies [Line Items]
Goodwill				$ 23,365,000	$ 21,331,000	$ 17,391,000
Managed Services [Member] | Total North America [Member]
Summary Of Significant Accounting Policies [Line Items]
Impairment of goodwill		$ 10,900,000
Scenario, Plan [Member]
Summary Of Significant Accounting Policies [Line Items]
Statutory federal income tax rate			21.00%
Licenses [Member]
Summary Of Significant Accounting Policies [Line Items]
Intangible assets useful life				7 years
Impairment of intangibles	$ 400,000
Customer Relationships [Member]
Summary Of Significant Accounting Policies [Line Items]
Intangible assets useful life				7 years
Customer Relationships [Member] | Managed Services [Member]
Summary Of Significant Accounting Policies [Line Items]
Impairment of intangibles		$ 1,700,000
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Expected useful lives				10 years
Intangible assets useful life				7 years
Maximum [Member] | Consolidated Entity Excluding Variable Interest Entities (VIE) [Member]
Summary Of Significant Accounting Policies [Line Items]
Non-controlling interest of subsidiaries				3.00%	3.00%	3.00%
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Expected useful lives				1 year
Intangible assets useful life				1 year

Business and Credit Concentra37

Business and Credit Concentrations - Accounts Receivables, Allowance for Doubtful Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Risks and Uncertainties [Abstract]
Accounts receivable	$ 51,996	$ 52,996	$ 66,077
Allowance for doubtful accounts, January 1,	(4,324)	(3,972)	(3,576)
Current year provision for doubtful accounts	(366)	(1,095)	(912)
Write-offs	1,715	743	516
Allowance for doubtful accounts, December 31,	(2,975)	(4,324)	(3,972)
Accounts receivable, net	$ 49,021	$ 48,672	$ 62,105

Business and Credit Concentra38

Business and Credit Concentrations - Additional Information (Detail) - Customer	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Business Combination, Separately Recognized Transactions [Line Items]
Number of significant customers	0	0	0
Sales [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Percentage of revenue generated from top five customers	26.80%	28.60%	21.30%
Maximum percentage generated from customers	10.00%	10.00%	10.00%

Business Combinations - Additio

Business Combinations - Additional Information (Detail) BRL in Millions	Jan. 17, 2018USD ($)	Jan. 17, 2018BRL	Jul. 28, 2017USD ($)	Jul. 24, 2017USD ($)	May 18, 2017USD ($)	Feb. 04, 2016USD ($)	May 31, 2017USD ($)	Feb. 29, 2016USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Business Acquisition [Line Items]
Amount paid for acquisition									$ 32,205,000	$ 4,841,000
Goodwill acquired during period									13,760,000	6,465,000
Change in fair value of earnout liability									(320,000)	(1,279,000)
Data Technology Solutions [Member]
Business Acquisition [Line Items]
Amount paid for acquisition				$ 5,100,000
Goodwill acquired during period				700,000
Aggregate purchase price				$ 5,105,000
Cyphre Security Solutions [Member]
Business Acquisition [Line Items]
Amount paid for acquisition							$ 4,900,000
Stock issued for acquisition							3,300,000
Contingent consideration earn-out, estimated payment					$ 3,800,000		$ 3,800,000		3,900,000
Goodwill acquired during period					4,600,000
Aggregate purchase price					$ 12,002,000
Revenue									5,100,000
Net income (loss)									1,400,000
Acquisition related costs									3,300,000
Cyphre Security Solutions [Member] | Interest Expense [Member]
Business Acquisition [Line Items]
Accreted interest expense on earn-out liability									100,000
Tecnor [Member]
Business Acquisition [Line Items]
Amount paid for acquisition								$ 4,800,000
Contingent consideration earn-out, estimated payment						$ 6,500,000			5,800,000
Goodwill acquired during period						6,500,000
Aggregate purchase price						11,394,000
Revenue										8,299,000
Net income (loss)										(287,000)
Acquisition related costs										200,000	$ 300,000
Net working capital adjustments						100,000
Estimate maximum earnout payable						$ 21,300,000
Change in fair value of earnout liability									300,000	1,300,000
Tecnor [Member] | Interest Expense [Member]
Business Acquisition [Line Items]
Accreted interest expense on earn-out liability									$ 500,000	$ 500,000
Energy Satellite Services [Member]
Business Acquisition [Line Items]
Amount paid for acquisition			$ 22,200,000
Goodwill acquired during period			8,500,000
Aggregate purchase price			$ 22,200,000
Intelie Solucoes Em Informatica S A [Member] | Subsequent Event [Member]
Business Acquisition [Line Items]
Amount paid for acquisition	$ 3,300,000	BRL 10.6
Stock issued for acquisition	7,500,000
Intelie Solucoes Em Informatica S A [Member] | Subsequent Event [Member] | Maximum [Member]
Business Acquisition [Line Items]
Contingent consideration earn-out, estimated payment	$ 17,000,000

Business Combinations - Summary

Business Combinations - Summary of Allocation of Purchase Price (Detail) - USD ($) $ in Thousands	Jul. 28, 2017	May 18, 2017	Feb. 04, 2016	Dec. 31, 2017	Jul. 24, 2017	Dec. 31, 2016	Dec. 31, 2015
Acquired Finite Lived Intangible Assets [Line Items]
Goodwill				$ 37,088		$ 21,998	$ 18,058
Tecnor [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Accounts Receivable			$ 2,672
Other assets			1,280
Property and equipment			809
Identifiable intangible assets			2,576
Goodwill			6,465
Accounts Payable			(1,914)
Accrued Expenses			(494)
Total purchase price			$ 11,394
Tecnor [Member] | Backlog [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Estimated Useful Life			2 years
Identifiable intangible assets			$ 366
Tecnor [Member] | Customer Relationships [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Estimated Useful Life			7 years
Identifiable intangible assets			$ 2,210
Cyphre Security Solutions [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Property and equipment		$ 18
Identifiable intangible assets		7,493
Goodwill		4,591
Accrued Expenses		(100)
Total purchase price		$ 12,002
Cyphre Security Solutions [Member] | Customer Relationships [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Estimated Useful Life		7 years
Identifiable intangible assets		$ 332
Cyphre Security Solutions [Member] | Brand Name [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Estimated Useful Life		7 years
Identifiable intangible assets		$ 1,590
Cyphre Security Solutions [Member] | Technology [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Estimated Useful Life		7 years
Identifiable intangible assets		$ 5,571
Energy Satellite Services [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Accounts Receivable	$ 392
Property and equipment	1,000
Identifiable intangible assets	12,910
Goodwill	8,465
Accounts Payable	(567)
Total purchase price	$ 22,200
Energy Satellite Services [Member] | Customer Relationships [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Estimated Useful Life	7 years
Identifiable intangible assets	$ 9,870
Energy Satellite Services [Member] | Covenant Not to Compete [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Estimated Useful Life	5 years
Identifiable intangible assets	$ 3,040
Data Technology Solutions [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Property and equipment					$ 4,553
Goodwill					704
Accounts Payable					(152)
Total purchase price					$ 5,105

Business Combinations - Summa41

Business Combinations - Summary of Allocation of Purchase Price (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2017	May 31, 2017	May 18, 2017	Feb. 04, 2016
Tecnor [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Contingent consideration earn-out, estimated payment	$ 5.8			$ 6.5
Cyphre Security Solutions [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Contingent consideration earn-out, estimated payment	$ 3.9	$ 3.8	$ 3.8

Business Combinations - Supplem

Business Combinations - Supplemental Pro Forma Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Tecnor [Member]
Business Acquisition [Line Items]
Revenue		$ 221,658	$ 285,329
Expenses		232,752	299,879
Net loss		(11,094)	(14,550)
Net loss attributable to RigNet, Inc. common stockholders		$ (11,304)	$ (14,864)
Net loss per share attributable to RigNet, Inc. common stockholders:
Basic		$ (0.64)	$ (0.85)
Diluted		$ (0.64)	$ (0.85)
Cyphre Security Solutions [Member]
Business Acquisition [Line Items]
Revenue	$ 214,899	$ 237,352
Expenses	228,105	242,483
Net loss	(13,206)	(5,131)
Net loss attributable to RigNet, Inc. common stockholders	$ (13,185)	$ (5,341)
Net loss per share attributable to RigNet, Inc. common stockholders:
Basic	$ (0.73)	$ (0.30)
Diluted	$ (0.73)	$ (0.30)

Business Combinations - Summa43

Business Combinations - Summary of Consolidated Statements of Comprehensive Income (Detail) - Tecnor [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)
Acquisition Date [Line Items]
Revenue	$ 8,299
Net loss	$ (287)

Goodwill and Intangibles - Good

Goodwill and Intangibles - Goodwill Balances and Changes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Line Items]
Beginning Balance	$ 21,998	$ 18,058
Acquisition of Tecnor	13,760	6,465
Foreign currency translation	1,330	(2,525)
Ending Balance	37,088	21,998
Managed Services [Member]
Goodwill [Line Items]
Beginning Balance	21,331	17,391
Acquisition of Tecnor	704	6,465
Foreign currency translation	1,330	(2,525)
Ending Balance	23,365	21,331
Applications and Internet-of-Things [Member]
Goodwill [Line Items]
Beginning Balance	667	667
Acquisition of Tecnor	13,056
Ending Balance	$ 13,723	$ 667

Goodwill and Intangibles - Inta

Goodwill and Intangibles - Intangibles Activities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Intangibles Acquired		$ 42,265
Accumulated amortization and foreign currency translation, January 1, 2016		(23,291)
Beginning Balance	$ 16,028	18,974
Additions	20,814	3,720
Impairment		(397)
Amortization expense	(6,759)	(5,223)
Foreign currency translation	322	(1,046)
Ending Balance	30,405	16,028
Brand Name [Member]
Finite-Lived Intangible Assets [Line Items]
Intangibles Acquired		4,353
Accumulated amortization and foreign currency translation, January 1, 2016		(2,288)
Beginning Balance	1,233	2,065
Additions	1,590
Amortization expense	(669)	(490)
Foreign currency translation	91	(342)
Ending Balance	$ 2,245	1,233
Weighted average estimated lives (years)	7 years
Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Intangibles Acquired		2,916
Accumulated amortization and foreign currency translation, January 1, 2016		(2,841)
Beginning Balance	$ 213	75
Additions		366
Amortization expense	(181)	(224)
Foreign currency translation	(15)	(4)
Ending Balance	$ 17	213
Weighted average estimated lives (years)	1 year
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangibles Acquired		20,025
Accumulated amortization and foreign currency translation, January 1, 2016		(14,296)
Beginning Balance	$ 5,392	5,729
Additions	10,202	2,210
Amortization expense	(2,302)	(1,646)
Foreign currency translation	209	(901)
Ending Balance	$ 13,501	5,392
Weighted average estimated lives (years)	7 years
Software [Member]
Finite-Lived Intangible Assets [Line Items]
Intangibles Acquired		12,471
Accumulated amortization and foreign currency translation, January 1, 2016		(3,242)
Beginning Balance	$ 8,024	9,229
Additions	79	1,144
Amortization expense	(2,517)	(2,550)
Foreign currency translation	37	201
Ending Balance	$ 5,623	8,024
Weighted average estimated lives (years)	5 years
Licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Intangibles Acquired		2,500
Accumulated amortization and foreign currency translation, January 1, 2016		(624)
Beginning Balance	$ 1,166	1,876
Impairment		(397)
Amortization expense	(286)	(313)
Ending Balance	$ 880	$ 1,166
Weighted average estimated lives (years)	7 years
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Additions	$ 5,903
Amortization expense	(551)
Ending Balance	$ 5,352
Weighted average estimated lives (years)	5 years
Covenant Not to Compete [Member]
Finite-Lived Intangible Assets [Line Items]
Additions	$ 3,040
Amortization expense	(253)
Ending Balance	$ 2,787
Weighted average estimated lives (years)	7 years

Goodwill and Intangibles - Amor

Goodwill and Intangibles - Amortization Expense for Intangibles (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
2,018	$ 6,939
2,019	5,959
2,020	4,952
2,021	4,574
2,022	4,275
Thereafter	3,706
Total amortization expense of intangibles	$ 30,405	$ 16,028	$ 18,974

Property, Plant and Equipment -

Property, Plant and Equipment - Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 168,095	$ 143,510
Less: Accumulated depreciation	(107,751)	(83,753)
Property, Plant and Equipment, Net	$ 60,344	59,757
Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Lives	1 year
Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Lives	10 years
Telecommunication and Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 152,480	131,401
Telecommunication and Computer Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Lives	1 year
Telecommunication and Computer Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Lives	5 years
Furniture and Other [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 9,544	6,968
Furniture and Other [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Lives	5 years
Furniture and Other [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Lives	7 years
Building [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Lives	10 years
Property, Plant and Equipment, Gross	$ 4,627	3,901
Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 1,444	$ 1,240

Property, Plant and Equipment48

Property, Plant and Equipment - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property Plant and Equipment Useful Life and Values [Abstract]
Depreciation expense	$ 24,100,000	$ 28,300,000	$ 27,100,000
Impairment of property, plant and equipment	$ 0	$ 0	$ 1,670,000

Long-Term Debt - Credit Facilit

Long-Term Debt - Credit Facilities and Long-Term Debt Arrangements (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Long-Term Debt
Term loan, net of unamortized deferred financing costs	$ 14,503	$ 34,053
Revolving loan	43,400	27,000
Capital lease	211	415
Total debt, including current maturities	58,114	61,468
Total debt, including current maturities	58,114	61,468
Less: Current maturities of long-term debt	(4,814)	(8,399)
Current maturities of capital lease	(127)	(79)
Long-term debt, non-current portion	$ 53,173	$ 52,990

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Detail)	Nov. 06, 2017USD ($)Institution	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Jun. 30, 2016USD ($)
Debt Instrument [Line Items]
Line of credit outstanding amount		$ 43,400,000	$ 27,000,000
Deferred financing cost amortization		217,000	$ 135,000	$ 171,000
Term Loan [Member]
Debt Instrument [Line Items]
Line of credit outstanding amount		$ 15,000,000
Credit Agreement [Member]
Debt Instrument [Line Items]
Number of participating financial institutions | Institution	4
Revolving credit facility	$ 85,000,000
Maturity of Term Loan / Maturity date	Nov. 6, 2020
Debt Instrument, Description of Variable Rate Basis		LIBOR
Quarterly principal installments of Term Loan	$ 1,250,000
Weighted average interest rate		3.30%	2.50%
Interest rate		4.10%
Funded debt to Adjusted EBITDA ratio		275.00%
Fixed charge coverage ratio		125.00%
Credit Agreement [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Line of credit outstanding amount	15,000,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit outstanding amount		$ 43,400,000
Performance Bond Facility [Member]
Debt Instrument [Line Items]
Standby letters of credit issued amount		$ 2,700,000
Performance bond facility					$ 1,500,000
Maturity date of performance bond facility		Jun. 30, 2021
Standby Letters of Credit [Member]
Debt Instrument [Line Items]
Standby letters of credit outstanding		$ 3,400,000
Standby Letters of Credit [Member] | Systems Integration and Automation [Member]
Debt Instrument [Line Items]
Line of credit outstanding amount		$ 700,000
Maximum [Member] | Revolving Credit Facility [Member] | Credit Agreement [Member]
Debt Instrument [Line Items]
Sublimit for issuance of standby letters of credit	25,000,000
Maximum [Member] | Performance Bond Facility [Member]
Debt Instrument [Line Items]
Sublimit for issuance of standby letters of credit	$ 25,000,000
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | Credit Agreement [Member]
Debt Instrument [Line Items]
LIBOR plus a margin ranging	1.75%
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | Credit Agreement [Member]
Debt Instrument [Line Items]
LIBOR plus a margin ranging	2.75%

Long-Term Debt - Aggregate Prin

Long-Term Debt - Aggregate Principal Maturities of Long-Term Debt (Detail) $ in Thousands	Dec. 31, 2017USD ($)
Debt Disclosure [Abstract]
2,018	$ 4,941
2,019	4,914
2,020	48,259
Total debt, including current maturities	$ 58,114

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
KKR Capstone [Member]
Related Party Transaction [Line Items]
Purchase cost of consulting services	$ 0	$ 0	$ 300,000

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	May 31, 2017	May 18, 2017	Feb. 04, 2016
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Derivatives	$ 0	$ 0
Change in fair value of earnout liability	(320,000)	(1,279,000)
Cyphre Security Solutions [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Contingent consideration earn-out, estimated payment	3,900,000		$ 3,800,000	$ 3,800,000
Cyphre Security Solutions [Member] | Interest Expense [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Accreted interest expense on earn-out liability	100,000
Tecnor [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Contingent consideration earn-out, estimated payment	5,800,000				$ 6,500,000
Change in fair value of earnout liability	300,000	1,300,000
Tecnor [Member] | Interest Expense [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Accreted interest expense on earn-out liability	$ 500,000	$ 500,000

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Commitments And Contingencies [Line Items]
Legal expense		$ 0.9	$ 0.1	$ 0.1
Gain related to dispute settlement	$ 2.3
Revenue during potential violation period		0.1
Accrued liability			0.8
Recognized expense under operating leases		4	4.7	3.7
GX Dispute [Member]
Commitments And Contingencies [Line Items]
Legal expense		1.6
Long term purchase commitment amount, maximum		65
Uncompleted Contracts [Member] | Systems Integration and Automation [Member] | Contractual Dispute [Member]
Commitments And Contingencies [Line Items]
Legal expense			0.2	0.5
Loss recorded on disputed contract			$ 1
Additional amount billed under the contract		$ 11.2
Ultimate potential loss estimated				$ 14.3

Commitments and Contingencies55

Commitments and Contingencies - Future Minimum Lease Obligations (Detail) $ in Thousands	Dec. 31, 2017USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2,018	$ 2,394
2,019	1,454
2,020	886
2,021	469
2,022	483
Thereafter	1,268
Total	$ 6,954

Commitments and Contingencies56

Commitments and Contingencies - Commercial Commitments Related to Satellite and Network Services (Detail) $ in Thousands	Dec. 31, 2017USD ($)
Commitments and Contingencies Disclosure [Abstract]
2,018	$ 16,893
2,019	7,274
2,020	658
2,021	641
2,022	641
Other Commitment, Total	$ 26,107

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017USD ($)OptionPlan$ / sharesshares	Dec. 31, 2016USD ($)$ / sharesshares	Dec. 31, 2015USD ($)$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of stock-based compensation plans | OptionPlan	2
Dividends related to stock options, restricted stock or common stock | $	$ 0
Stock-based compensation | $	3,703,000	$ 3,389,000	$ 3,660,000
Total unrecognized compensation cost | $	$ 6,500,000	$ 5,900,000
Weighted-average period	2 years
Number of option granted | shares	0	112,000	244,000
Weighted average remaining contractual term in years for equity award	1 year 8 months 12 days	2 years 9 months 18 days	3 years 8 months 12 days
Equity awards vested and expected to vest | shares	2,500,000
Awards available for grant | shares	2,600,000
Employee Stock Option [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average fair value of options granted, per share | $ / shares		$ 6.56	$ 13.22
Restricted Stock Units RSU, Performance Share Units And Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average fair value of RSUs and restricted stock granted, per share | $ / shares	$ 19.68	$ 12.45	$ 30.68

Stock-Based Compensation - 2010

Stock-Based Compensation - 2010 Omnibus Incentive Plan - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of option granted	0	112,000	244,000
Stock options exercised	70,000	223,000	80,000
Options forfeited	47,000	382,000	119,000
Options outstanding	381,000	499,000	992,000	947,000
Restricted common stock granted, net of share repurchase from employees and share cancellations, shares	67,536
Vesting period for restricted stock	3 years
Performance Share Units (PSUs) [Member] | Officers and Employees [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted common stock granted, net of share repurchase from employees and share cancellations, shares	33,586
2010 Omnibus Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized under plan	4
Expiration of stock incentive awards and options granted	10 years
Number of option granted	1,145,110
Stock options exercised	142,711
Options forfeited	639,918
Options outstanding	362,481
Restricted common stock granted, net of share repurchase from employees and share cancellations, shares	231,974
Issuance of restricted common stock, net of share repurchase from employees and share cancellations, shares	130,852
Vesting period for restricted stock	4 years
2010 Omnibus Incentive Plan [Member] | Vest Over a Four Year Period of Continued Employment [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting percentage for restricted shares issued to officers and employees	25.00%
2010 Omnibus Incentive Plan [Member] | RSUs and Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of RSUs and restricted stock vested	463,717
Shares of RSUs and restricted stock forfeited	521,132
Shares of unvested RSUs and restricted stock	414,768

Stock-Based Compensation - 2006

Stock-Based Compensation - 2006 Long-Term Incentive Plan - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Jan. 31, 2010	Mar. 31, 2006
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period for restricted shares issued to officers and employees	3 years
Number of shares authorized under plan	0	112,000	244,000
Stock options exercised	70,000	223,000	80,000
Options forfeited	47,000	382,000	119,000
Options outstanding	381,000	499,000	992,000	947,000
2006 Long Term Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Contractual term of stock option granted		10 years
Vesting percentage for restricted shares issued to officers and employees		25.00%
Vesting period for restricted shares issued to officers and employees		4 years
Number of shares authorized under plan					5,000,000	3,000,000
Number of shares authorized under plan		981,125
Stock options exercised		745,503
Options forfeited		217,497
Options outstanding		18,125
Additional options issued		0

Stock-Based Compensation - Assu

Stock-Based Compensation - Assumptions Used for Stock Option Grants (Detail)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Expected volatility	49.00%
Expected volatility, minimum		44.00%
Expected volatility, maximum		47.00%
Expected term (in years)	7 years	7 years
Risk-free interest rate, minimum	1.60%	1.90%
Risk-free interest rate, maximum	1.70%	2.00%
Dividend yield	0.00%	0.00%

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Beginning balance, shares	499,000	992,000	947,000
Granted, shares	0	112,000	244,000
Exercised, shares	(70,000)	(223,000)	(80,000)
Forfeited, shares	(47,000)	(382,000)	(119,000)
Expired, shares	(1,000)
Ending balance, shares	381,000	499,000	992,000
Exercisable, shares	224,000	240,000	579,000
Beginning balance, weighted average exercise price	$ 20.77	$ 20.40	$ 18.47
Granted, weighted average exercise price		12.80	31.73
Exercised, weighted average exercise price	13.04	8.73	12.54
Forfeited, weighted average exercise price	27.11	26.29	30.62
Expired, weighted average exercise price	8.32
Ending balance, weighted average exercise price	21.37	20.77	20.40
Exercisable, weighted average exercise price	$ 21.28	$ 18.02	$ 13.75
Intrinsic value of options exercised	$ 1,286	$ 591	$ 2,850
Fair value of options vested	$ 837	$ 1,455	$ 884

Stock-Based Compensation - Su62

Stock-Based Compensation - Summary of Company's RSU, PSU and Restricted Stock Activity (Detail) - Restricted Stock Units RSU, Performance Share Units And Restricted Stock [Member] - shares shares in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning balance	494	143
Granted, shares	232	641
Vested, shares	(110)	(55)
Forfeited, shares	(180)	(235)
Ending balance	436	494

Stock-Based Compensation - Su63

Stock-Based Compensation - Summary of Changes in Unvested Equity Awards, Including Stock Options, RSUs, PSUs and Restricted Stock (Detail) - Unvested Equity Awards [Member] - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning balance	473	506	589
Granted, shares	232	753	336
Vested, shares	(182)	(169)	(237)
Forfeited, shares	(227)	(617)	(182)
Unvested equity awards, ending balance	296	473	506
Unvested equity awards, weighted average grant date fair value, beginning balance	$ 16.62	$ 21.48	$ 20.06
Granted, weighted average grant date fair value	19.42	11.57	17.43
Vested, weighted average grant date fair value	14.16	18.34	17.94
Forfeited, weighted average grant date fair value	11.66	13.97	14.01
Unvested equity awards, weighted average grant date fair value, ending balance	$ 24.13	$ 16.62	$ 21.48

Income per Share - Reconciliati

Income per Share - Reconciliation of the Numerators and Denominators of the Basic and Diluted per Share (Detail) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Earnings Per Share [Abstract]
Net loss attributable to RigNet, Inc. common stockholders	$ (5,669)	$ (4,232)	$ (4,249)	$ (2,026)	$ (3,765)	$ (1,658)	$ (4,751)	$ (1,333)	$ (16,176)	$ (11,507)	$ (16,974)
Weighted average shares outstanding, basic	18,090	18,086	17,985	17,873	17,833	17,782	17,634	17,613	18,009	17,768	17,534
Effect of dilutive securities									0	0	0
Weighted average shares outstanding, diluted	18,090	18,086	17,985	17,873	17,833	17,782	17,634	17,613	18,009	17,768	17,534

Income per Share - Additional I

Income per Share - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Line Items]
Potentially issuable shares excluded from calculation of diluted EPS	625,039	1,120,400
Antidilutive Position of Security [Member]
Earnings Per Share [Line Items]
Potentially issuable shares excluded from calculation of diluted EPS	263,662	861,337
Antidilutive Securities Due to Effect of Period Loss [Member]
Earnings Per Share [Line Items]
Potentially issuable shares excluded from calculation of diluted EPS	361,377	259,063

Segment Information - Additiona

Segment Information - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017Segment
Segment Reporting [Abstract]
Number of reportable segments	2

Segment Information - Company's

Segment Information - Company's Business Segment Information (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Revenue	$ 56,814	$ 50,844	$ 49,162	$ 48,072	$ 52,759	$ 50,612	$ 54,911	$ 62,341	$ 204,892	$ 220,623	$ 271,260
Cost of revenue (excluding depreciation and amortization)									131,166	129,759	163,238
Depreciation and amortization									30,845	33,556	32,471
Impairment of intangibles									0
Impairment of goodwill, intangibles, property, plant and equipment										397	14,262
Selling, general and administrative									52,869	59,362	72,641
Operating income (loss)	(2,532)	$ (2,951)	$ (3,438)	$ (1,067)	7	$ 247	$ (3,294)	$ 589	(9,988)	(2,451)	(11,352)
Total assets	230,094				230,972				230,094	230,972	258,116
Capital expenditures									17,909	15,197	32,690
Reportable Segments [Member] | Managed Services [Member]
Segment Reporting Information [Line Items]
Revenue									164,238	192,538	242,191
Cost of revenue (excluding depreciation and amortization)									101,681	112,046	129,453
Depreciation and amortization									23,202	26,581	26,967
Impairment of intangibles									0
Impairment of goodwill, intangibles, property, plant and equipment											14,262
Selling, general and administrative									16,841	28,422	35,787
Operating income (loss)									22,514	25,489	35,722
Total assets	181,157				203,048				181,157	203,048	254,443
Capital expenditures									17,066	13,794	27,099
Reportable Segments [Member] | Applications and Internet-of-Things [Member]
Segment Reporting Information [Line Items]
Revenue									15,626	6,495	7,530
Cost of revenue (excluding depreciation and amortization)									10,751	2,703	3,023
Depreciation and amortization									1,738
Impairment of intangibles									0
Selling, general and administrative									1,685	268	268
Operating income (loss)									1,452	3,524	4,239
Total assets	32,464								32,464
Capital expenditures									198
Reportable Segments [Member] | Systems Integration [Member]
Segment Reporting Information [Line Items]
Revenue									25,028	21,590	21,539
Cost of revenue (excluding depreciation and amortization)									18,734	15,010	30,762
Depreciation and amortization									2,438	2,712	3,104
Impairment of intangibles									0
Selling, general and administrative									1,403	2,665	4,120
Operating income (loss)									2,453	1,203	(16,447)
Total assets	16,708				26,169				16,708	26,169	42,850
Capital expenditures											227
Corporate and Eliminations [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization									3,467	4,263	2,400
Impairment of intangibles									0
Impairment of goodwill, intangibles, property, plant and equipment										397
Selling, general and administrative									32,940	28,007	32,466
Operating income (loss)									(36,407)	(32,667)	(34,866)
Total assets	$ (235)				$ 1,755				(235)	1,755	(39,177)
Capital expenditures									$ 645	$ 1,403	$ 5,364

Segment Information - Revenue E

Segment Information - Revenue Earned from Domestic and International Operations (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues From External Customers And Long-Lived Assets [Line Items]
Revenue	$ 56,814	$ 50,844	$ 49,162	$ 48,072	$ 52,759	$ 50,612	$ 54,911	$ 62,341	$ 204,892	$ 220,623	$ 271,260
Domestic [Member]
Revenues From External Customers And Long-Lived Assets [Line Items]
Revenue									63,460	66,028	80,134
International [Member]
Revenues From External Customers And Long-Lived Assets [Line Items]
Revenue									$ 141,432	$ 154,595	$ 191,126

Segment Information - Long - Li

Segment Information - Long - Lived Assets, Net of Accumulated Depreciation for Both Domestic and International Operations (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Revenues From External Customers And Long-Lived Assets [Line Items]
Long lived assets	$ 127,837	$ 97,783
Domestic [Member]
Revenues From External Customers And Long-Lived Assets [Line Items]
Long lived assets	68,942	27,682
International [Member]
Revenues From External Customers And Long-Lived Assets [Line Items]
Long lived assets	$ 58,895	$ 70,101

Income Taxes - Components of th

Income Taxes - Components of the Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current:
Federal		$ 23	$ 305
State	$ 495	43	141
Foreign	2,638	4,386	7,619
Total current	3,133	4,452	8,065
Deferred:
Federal	(2,020)	458	(5,456)
State	(8)	419	(288)
Foreign	2,367	496	88
Total deferred	339	1,373	(5,656)
Income tax expense	$ 3,472	$ 5,825	$ 2,409

Income Taxes - Income (Loss) Be

Income Taxes - Income (Loss) Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income (loss) before income taxes:
United States	$ (15,019)	$ (18,361)	$ (27,741)
Foreign	2,294	12,889	13,490
Income before income taxes	$ (12,725)	$ (5,472)	$ (14,251)

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended				144 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016
Income Tax [Line Items]
Statutory federal income tax rate		35.00%
U.S. domestic foreign tax credit carry forwards		$ 13,600,000
Valuation allowance		45,129,000	$ 50,298,000		$ 50,298,000
Total deferred tax assets		6,755,000	13,124,000		13,124,000
Potential tax liabilities attributable to a repatriation		2,101,000	1,818,000	$ 1,216,000
Income tax related interest and penalties		0	0		0
Income tax expense not related to uncertain tax benefits		$ 0	0		0
Transition tax on certain unrepatriated earnings of foreign subsidiaries payable period		8 years
Decrease in provisional deferred tax expense		$ 9,800,000
Provisional Transition Tax obligation		$ 13,800,000
Enacted tax rate change description		The 2017 Tax Act creates a new requirement that certain income (i.e., GILTI) earned by CFCs must be included currently in the gross income of the CFCs’ U.S. shareholder. GILTI is the excess of the shareholder’s “net CFC tested income” over the net deemed tangible income return, which is currently defined as the excess of (1) 10 percent of the aggregate of the U.S. shareholder’s pro rata share of the qualified business asset investment of each CFC with respect to which it is a U.S. shareholder over (2) the amount of certain interest expense taken into account in the determination of net CFC-tested income. Because of the complexity of the new GILTI tax rules, the Company is continuing to evaluate this provision of the Tax Act and the application of ASC 740.
Income tax examination likelihood settlement		Greater than 50.0%
Largest amount of uncertain tax benefits		50.00%
Uncertain tax benefits		$ 18,800,000	21,800,000	19,300,000	21,800,000
Unrecognized tax benefits which impact the annual effective tax rate		9,600,000
Valuation allowance related to assets		2,300,000
Accrued penalties and interest		9,200,000	8,800,000	7,300,000	8,800,000
Interest and penalties recognized		300,000	$ 1,600,000	100,000
Reductions related to lapses in statue of limitations		327,000		$ 1,083,000	$ 169,000
U S Federal [Member]
Income Tax [Line Items]
Total deferred tax assets		27,500,000
Norway [Member]
Income Tax [Line Items]
Total deferred tax assets		11,400,000
Australia [Member]
Income Tax [Line Items]
Total deferred tax assets		4,200,000
United Kingdom [Member]
Income Tax [Line Items]
Total deferred tax assets		1,900,000
Other Foreign Jurisdictions [Member]
Income Tax [Line Items]
Total deferred tax assets		100,000
Rignet Qatar WLL [Member]
Income Tax [Line Items]
Potential tax liabilities attributable to a repatriation		10,400,000
Scenario, Forecast [Member]
Income Tax [Line Items]
Reductions related to lapses in statue of limitations	$ 2,500,000
Scenario, Plan [Member]
Income Tax [Line Items]
Statutory federal income tax rate	21.00%
State and Local Jurisdiction [Member]
Income Tax [Line Items]
Net operating loss carry forward		8,100,000
Foreign Country [Member]
Income Tax [Line Items]
Net operating loss carry forward		54,500,000
Domestic Tax Authority [Member]
Income Tax [Line Items]
Net operating loss carry forward		$ 9,000,000

Income Taxes - Income Tax Expen

Income Taxes - Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
United States statutory federal income tax rate	$ (4,454)	$ (1,915)	$ (4,988)
Non-deductible expenses	(294)	290	131
Non-taxable financial income and expense			(1,498)
Noncash compensation	(30)	761	349
U.S. tax on foreign earnings, net of tax credits	(1,283)	587	50
Changes in valuation allowances	(5,956)	6,681	10,358
Tax credits	(699)	(4,403)	410
State taxes	224	53	(130)
Effect of operating in foreign jurisdictions	2,101	1,818	1,216
Deemed repatriation transition tax	3,807
Reduction of federal corporate tax rate	8,190
Changes in prior year estimates	(26)	293	(58)
Changes in uncertain tax benefits	1,798	1,243	(3,430)
Revisions of deferred tax accounts	10	313	98
Other	104	104	(99)
Income tax expense	$ 3,472	$ 5,825	$ 2,409

Income Taxes - Significant Comp

Income Taxes - Significant Components of the Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deferred tax assets:
Net operating loss carryforwards	$ 15,598	$ 16,474
Federal, state and foreign tax credits	17,833	21,972
Depreciation and amortization	13,009	17,907
Unrealized loss on functional currency	565	444
Allowance for doubtful accounts	704	1,390
Accruals not currently deductible	1,027	2,101
Stock-based compensation	812	1,012
Intercompany Interest	1,985	2,044
Other	351	78
Valuation allowance	(45,129)	(50,298)
Total deferred tax assets	6,755	13,124
Deferred tax liabilities:
Depreciation and amortization	(605)	(1,055)
Tax on foreign earnings		(2,140)
Other	(280)	(142)
Total deferred tax liabilities	(885)	(3,337)
Net deferred tax assets	$ 5,870	$ 9,787

Income Taxes - Changes in the C

Income Taxes - Changes in the Company's Gross Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended		144 Months Ended
	Dec. 31, 2017	Dec. 31, 2015	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Beginning, Balance	$ 13,244	$ 15,454	$ 15,718
Additions for the current year tax		1,501	794
Additions related to prior years	110		602
Reductions related to settlements with taxing authorities		(154)	(3,701)
Reductions related to lapses in statue of limitations	(327)	(1,083)	(169)
Reductions related to prior years	(3,390)
Ending, Balance	$ 9,637	$ 15,718	$ 13,244

Supplemental Quarterly Financ76

Supplemental Quarterly Financial Information (Unaudited) - Summarized Quarterly Supplemental Consolidated Financial Information (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Revenue	$ 56,814	$ 50,844	$ 49,162	$ 48,072	$ 52,759	$ 50,612	$ 54,911	$ 62,341	$ 204,892	$ 220,623	$ 271,260
Operating income (loss)	(2,532)	(2,951)	(3,438)	(1,067)	7	247	(3,294)	589	(9,988)	(2,451)	(11,352)
Net loss	(5,807)	(4,193)	(4,210)	(1,987)	(3,726)	(1,448)	(4,856)	(1,267)	(16,197)	(11,297)	(16,660)
Net loss attributable to RigNet, Inc. common stockholders	$ (5,669)	$ (4,232)	$ (4,249)	$ (2,026)	$ (3,765)	$ (1,658)	$ (4,751)	$ (1,333)	$ (16,176)	$ (11,507)	$ (16,974)
Net loss per share attributable to RigNet, Inc. common stockholders, basic	$ (0.31)	$ (0.23)	$ (0.24)	$ (0.11)	$ (0.21)	$ (0.09)	$ (0.27)	$ (0.08)	$ (0.90)	$ (0.65)	$ (0.97)
Net loss per share attributable to RigNet, Inc. common stockholders, diluted	$ (0.31)	$ (0.23)	$ (0.24)	$ (0.11)	$ (0.21)	$ (0.09)	$ (0.27)	$ (0.08)	$ (0.90)	$ (0.65)	$ (0.97)
Weighted average shares outstanding, basic	18,090	18,086	17,985	17,873	17,833	17,782	17,634	17,613	18,009	17,768	17,534
Weighted average shares outstanding, diluted	18,090	18,086	17,985	17,873	17,833	17,782	17,634	17,613	18,009	17,768	17,534

Employee Benefits - Additional

Employee Benefits - Additional Information (Detail) - USD ($)	Jan. 01, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Contribution Plan Disclosure [Line Items]
Employer 401(k)contribution amount		$ 0	$ 0	$ 800,000
Employee's Contribution up to 3.0% [Member] | Subsequent Event [Member]
Defined Contribution Plan Disclosure [Line Items]
Employer 401(k)matching contribution, percent of match	100.00%
Employer 401(k) matching contribution to employee percentage	3.00%
Employee's Contribution up to 3.0% - 5.0% [Member] | Subsequent Event [Member]
Defined Contribution Plan Disclosure [Line Items]
Employer 401(k)matching contribution, percent of match	50.00%
Employee's Contribution up to 3.0% - 5.0% [Member] | Subsequent Event [Member] | Minimum [Member]
Defined Contribution Plan Disclosure [Line Items]
Employer 401(k) matching contribution to employee percentage	3.00%
Employee's Contribution up to 3.0% - 5.0% [Member] | Subsequent Event [Member] | Maximum [Member]
Defined Contribution Plan Disclosure [Line Items]
Employer 401(k) matching contribution to employee percentage	5.00%
Employee's Contribution up to 2.0% [Member]
Defined Contribution Plan Disclosure [Line Items]
Employer 401(k)matching contribution, percent of match				100.00%
Employer 401(k) matching contribution to employee percentage				2.00%
Employee's Contribution 2% - 6% [Member]
Defined Contribution Plan Disclosure [Line Items]
Employer 401(k)matching contribution, percent of match				50.00%
Employee's Contribution 2% - 6% [Member] | Minimum [Member]
Defined Contribution Plan Disclosure [Line Items]
Employer 401(k) matching contribution to employee percentage				2.00%
Employee's Contribution 2% - 6% [Member] | Maximum [Member]
Defined Contribution Plan Disclosure [Line Items]
Employer 401(k) matching contribution to employee percentage				6.00%

Restructuring Costs - Cost Re78

Restructuring Costs - Cost Reduction Plans - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)Employees	Dec. 31, 2016USD ($)Employees	Dec. 31, 2015USD ($)FacilitiesEmployees
Restructuring Cost and Reserve [Line Items]
Restructuring charges, pre-tax			$ 7.4
Restructuring charges accrued	$ 0.3
Net reduction to restructuring charges		$ 1.4
General and Administrative [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges, pre-tax	$ 0.8	$ 1.9
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges, pre-tax			$ 4.5
Number of employees lay off | Employees	31	148
Number of employees reduced | Employees			123
Employee Severance [Member] | General and Administrative [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges, pre-tax			$ 3.4
Employee Severance [Member] | Cost of Revenue [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges, pre-tax			1.1
Exit Cost of Corporate Office Lease [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges, pre-tax		$ 3.3
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges, pre-tax			$ 2.9
Number of company facilities vacating | Facilities			9
Facility Closing [Member] | General and Administrative [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges, pre-tax			$ 1.4
Facility Closing [Member] | Cost of Revenue [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges, pre-tax			$ 1.5

Executive Departure Costs - Add

Executive Departure Costs - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2017	Mar. 31, 2016
Compensation Related Costs [Abstract]
Pre-tax executive departure charge	$ 1.2	$ 1.9