Boingo Wireless (WIFI) 10-K 17 Mar 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Mar. 03, 2014	Jun. 28, 2013
Document and Entity Information	'	'	'
Entity Registrant Name	'BOINGO WIRELESS INC	'	'
Entity Central Index Key	'0001169988	'	'
Document Type	'10-K	'	'
Document Period End Date	31-Dec-13	'	'
Amendment Flag	'false	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Filer Category	'Accelerated Filer	'	'
Entity Public Float	'	'	$178,983,000
Entity Common Stock, Shares Outstanding	'	35,303,944	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$27,338	$58,138
Restricted cash	545	30
Marketable securities	32,962	41,558
Accounts receivable, net	16,326	13,043
Prepaid expenses and other current assets	2,566	2,072
Deferred tax assets	1,192	1,204
Total current assets	80,929	116,045
Property and equipment, net	67,560	42,411
Goodwill	42,431	26,744
Intangible assets, net	23,413	10,594
Deferred tax assets	'	4,256
Other assets	1,210	2,482
Total assets	215,543	202,532
Current liabilities:	'	'
Accounts payable	11,642	4,990
Accrued expenses and other liabilities	16,382	10,977
Deferred revenue	19,292	17,329
Current portion of capital leases	526	42
Total current liabilities	47,842	33,338
Deferred revenue, net of current portion	21,591	24,123
Long-term portion of capital leases	473	136
Deferred tax liabilities	3,369	'
Other liabilities	1,660	436
Total liabilities	74,935	58,033
Commitments and contingencies (Note 12)	'	'
Stockholders' equity:	'	'
Preferred stock, $0.0001 par value; 5,000 shares authorized; no shares issued and outstanding	'	'
Common stock, $0.0001 par value; 100,000 shares authorized; 35,226 and 35,483 shares issued and outstanding for 2013 and 2012, respectively	4	4
Additional paid-in capital	182,927	178,219
Accumulated deficit	-43,188	-34,547
Total common stockholders' equity	139,743	143,676
Non-controlling interests	865	823
Total stockholders' equity	140,608	144,499
Total liabilities and stockholders' equity	$215,543	$202,532

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, except Per Share data, unless otherwise specified
Consolidated Balance Sheets	'	'
Preferred stock, par value (in dollars per share)	$0.00	$0.00
Preferred stock, shares authorized	5,000	5,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$0.00	$0.00
Common stock, shares authorized	100,000	100,000
Common stock, shares issued	35,226	35,483
Common stock, shares outstanding	35,226	35,483

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Consolidated Statements of Operations	'	'	'
Revenue	$106,746	$102,506	$94,558
Costs and operating expenses:	'	'	'
Network access	47,245	42,289	37,082
Network operations	18,402	14,541	15,849
Development and technology	11,432	10,772	9,433
Selling and marketing	14,244	10,255	7,409
General and administrative	15,067	12,700	11,953
Amortization of intangible assets	2,250	1,103	1,655
Total costs and operating expenses	108,640	91,660	83,381
(Loss) income from operations	-1,894	10,846	11,177
Interest and other income (expense), net	37	143	-176
(Loss) income before income taxes	-1,857	10,989	11,001
Income tax expense	1,286	2,965	4,064
Net (loss) income	-3,143	8,024	6,937
Net income attributable to non-controlling interests	650	729	642
Net (loss) income attributable to Boingo Wireless, Inc.	-3,793	7,295	6,295
Accretion of convertible preferred stock	'	'	-1,633
Net (loss) income attributable to common stockholders	($3,793)	$7,295	$4,662
Net (loss) income per share attributable to common stockholders:	'	'	'
Basic (in dollars per share)	($0.11)	$0.21	$0.19
Diluted (in dollars per share)	($0.11)	$0.20	$0.17
Weighted average shares used in computing net (loss) income per share attributable to common stockholders:	'	'	'
Basic (in shares)	35,578	34,774	24,014
Diluted (in shares)	35,578	37,317	27,481

Consolidated_Statements_of_Con

Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) (USD $)

Total

Series A Convertible Preferred Stock

Series A-2 Convertible Preferred Stock

Series B Convertible Preferred Stock

Series C Convertible Preferred Stock

Total Convertible Preferred Stock

Common Stock

Additional Paid-in Capital

Treasury Stock

Note Receivable from Stockholder

Accumulated Deficit

Non-controlling Interest

In Thousands, except Share data, unless otherwise specified

Balance at Dec. 31, 2010

($50,985)

$22,263

$6,868

$13,948

$79,890

$122,969

'

'

($4,575)

($103)

($46,504)

$197

Balance (in shares) at Dec. 31, 2010

'

5,053,000

1,105,000

3,433,000

10,983,000

'

5,835,000

'

'

'

'

'

Increase (Decrease) in Stockholders' Equity

'

'

'

'

'

'

'

'

'

'

'

'

Accretion of convertible preferred stock

-1,633

258

82

176

1,117

1,633

'

'

'

'

-1,633

'

Issuance of common stock upon conversion of preferred stock

124,602

-22,521

-6,950

-14,124

-81,007

-124,602

2

124,600

'

'

'

'

Issuance of common stock upon conversion of preferred stock (in shares)

'

-5,053,000

-1,105,000

-3,433,000

-10,983,000

'

22,846,000

'

'

'

'

'

Issuance of common stock upon initial public offering

48,297

'

'

'

'

'

1

48,296

'

'

'

'

Issuance of common stock upon initial public offering (in shares)

'

'

'

'

'

'

3,847,000

'

'

'

'

'

Issuance of common stock upon exercise and conversion of preferred stock warrants

272

'

'

'

'

'

'

272

'

'

'

'

Issuance of common stock upon exercise and conversion of preferred stock warrants (in shares)

'

'

'

'

'

'

20,000

'

'

'

'

'

Issuance of common stock upon exercise of common stock warrants (in shares)

'

'

'

'

'

'

21,000

'

'

'

'

'

Issuance of common stock upon exercise of stock options

1,028

'

'

'

'

'

'

1,028

'

'

'

'

Issuance of common stock upon exercise of stock options (in shares)

1,015,000

'

'

'

'

'

1,015,000

'

'

'

'

'

Offering costs

-2,596

'

'

'

'

'

'

-2,596

'

'

'

'

Stock-based compensation expense

3,450

'

'

'

'

'

'

3,450

'

'

'

'

Retirement of treasury stock

'

'

'

'

'

'

'

-4,575

4,575

'

'

'

Forgiveness of note receivable from stockholder

103

'

'

'

'

'

'

'

'

103

'

'

Excess (deficient) tax benefits from stock-based compensation

246

'

'

'

'

'

'

246

'

'

'

'

Non-controlling interest distributions

-642

'

'

'

'

'

'

'

'

'

'

-642

Net (loss) income

6,937

'

'

'

'

'

'

'

'

'

6,295

642

Balance at Dec. 31, 2011

129,079

'

'

'

'

'

3

170,721

'

'

-41,842

197

Balance (in shares) at Dec. 31, 2011

'

'

'

'

'

'

33,584,000

'

'

'

'

'

Increase (Decrease) in Stockholders' Equity

'

'

'

'

'

'

'

'

'

'

'

'

Issuance of common stock upon exercise of stock options

2,574

'

'

'

'

'

1

2,573

'

'

'

'

Issuance of common stock upon exercise of stock options (in shares)

1,899,000

'

'

'

'

'

1,899,000

'

'

'

'

'

Stock-based compensation expense

2,735

'

'

'

'

'

'

2,735

'

'

'

'

Excess (deficient) tax benefits from stock-based compensation

2,190

'

'

'

'

'

'

2,190

'

'

'

'

Non-controlling interest distributions

-103

'

'

'

'

'

'

'

'

'

'

-103

Net (loss) income

8,024

'

'

'

'

'

'

'

'

'

7,295

729

Balance at Dec. 31, 2012

144,499

'

'

'

'

'

4

178,219

'

'

-34,547

823

Balance (in shares) at Dec. 31, 2012

'

'

'

'

'

'

35,483,000

'

'

'

'

'

Increase (Decrease) in Stockholders' Equity

'

'

'

'

'

'

'

'

'

'

'

'

Issuance of common stock under stock incentive plans

599

'

'

'

'

'

'

599

'

'

'

'

Issuance of common stock under stock incentive plans (in shares)

'

'

'

'

'

'

465,000

'

'

'

'

'

Issuance of common stock upon exercise of stock options (in shares)

461,000

'

'

'

'

'

'

'

'

'

'

'

Stock-based compensation expense

4,506

'

'

'

'

'

'

4,506

'

'

'

'

Repurchase and retirement of common stock

-4,848

'

'

'

'

'

'

'

'

'

-4,848

'

Repurchase and retirement of common stock (in shares)

-722,000

'

'

'

'

'

-722,000

'

'

'

'

'

Excess (deficient) tax benefits from stock-based compensation

-397

'

'

'

'

'

'

-397

'

'

'

'

Non-controlling interest distributions

-608

'

'

'

'

'

'

'

'

'

'

-608

Net (loss) income

-3,143

'

'

'

'

'

'

'

'

'

-3,793

650

Balance at Dec. 31, 2013

$140,608

'

'

'

'

'

$4

$182,927

'

'

($43,188)

$865

Balance (in shares) at Dec. 31, 2013

'

'

'

'

'

'

35,226,000

'

'

'

'

'

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities	'	'	'
Net (loss) income	($3,143)	$8,024	$6,937
Adjustments to reconcile net (loss) income including non-controlling interests to net cash provided by operating activities:	'	'	'
Depreciation and amortization of property and equipment	18,940	15,958	12,301
Amortization of intangible assets	2,250	1,103	1,655
Stock-based compensation	4,506	2,735	3,450
Forgiveness on note receivable from stockholder	'	'	103
Excess tax benefits from stock-based compensation	-55	1,818	'
Change in fair value of preferred stock warrants	'	'	132
Change in fair value of contingent consideration	-367	'	'
Change in deferred income taxes	1,440	989	2,828
Changes in operating assets and liabilities, net of effect of acquisition:	'	'	'
Accounts receivable	-2,403	-3,011	734
Prepaid expenses and other assets	1,648	-347	357
Accounts payable	-242	-290	-1,236
Accrued expenses and other liabilities	-1,307	-2,506	-83
Deferred revenue	-596	123	2,351
Net cash provided by operating activities	20,671	24,596	29,529
Cash flows from investing activities	'	'	'
Decrease in restricted cash	'	435	536
Purchases of marketable securities	-33,430	-70,185	'
Proceeds from sales of marketable securities	42,026	28,627	9,373
Purchases of property and equipment	-29,500	-18,000	-16,917
Payments for patents, trademarks and domain	-40	-146	-156
Payments for business acquisitions, net of cash acquired	-19,459	-3,185	'
Other	'	-14	-171
Net cash used in investing activities	-40,403	-62,468	-7,335
Cash flows from financing activities	'	'	'
Proceeds from issuance of common stock upon initial public offering	'	'	48,297
Offering costs	'	'	-2,586
Proceeds from exercise of stock options	614	2,573	1,028
Repurchase and retirement of common stock	-4,848	'	'
Excess tax benefits from stock-based compensation	55	372	246
Payments of capital leases and notes payable	-187	-190	-420
Payments of acquired notes payable and financed liabilities	-6,079	'	'
Payments of withholding tax on net exercise of restricted stock units	-15	'	'
Payments to non-controlling interests	-608	-678	-547
Net cash (used in) provided by financing activities	-11,068	2,077	46,018
Net (decrease) increase in cash and cash equivalents	-30,800	-35,795	68,212
Cash and cash equivalents at beginning of year	58,138	93,933	25,721
Cash and cash equivalents at end of year	27,338	58,138	93,933
Supplemental disclosure of cash flow information	'	'	'
Cash paid for interest	32	11	11
Cash paid for taxes	96	737	1,357
Supplemental disclosure of non-cash investing and financing activities	'	'	'
Conversion of convertible preferred stock into common stock	'	'	124,602
Retirement of treasury stock	'	'	4,575
Property and equipment costs in accounts payable, accrued expenses and other liabilities	10,283	2,607	1,995
Accretion of convertible preferred stock	'	'	1,633
Exercise and conversion of preferred stock warrants into common stock	'	'	272
Acquisition of software, equipment and software maintenance services under capital leases	'	'	402
Assets acquired in business acquisition	39,794	'	'
Liabilities assumed in business acquisition	$16,151	'	'

The_business

The business	12 Months Ended
	Dec. 31, 2013
The business	'
The business	'
	1. The business
	Boingo Wireless, Inc. and its subsidiaries (collectively "we, "us", "our" or "the Company") is a leading global provider of mobile Internet solutions for smartphones, tablet computers, laptops, and other wireless-enabled consumer devices. The Company has more than a million small cell networks for cellular distributed antenna system ("DAS") and Wi-Fi access that reach more than one billion consumers annually. Boingo Wireless, Inc. was incorporated in April 16, 2001 in the State of Delaware. We have a diverse monetization model that enables us to generate revenues from retail sales, wholesale partnerships, and advertising across these small cell networks. Retail products include Wi-Fi subscriptions and day passes that provide access to more than 800,000 commercial hotspots worldwide, and Internet Protocol television ("IPTV") services and residential broadband for military barracks. Wholesale offerings include Wi-Fi roaming, private label Wi-Fi, location based services, and DAS, which are cellular extension networks. Advertising revenue is driven by Wi-Fi sponsorships at airports, hotels, cafes and restaurants, and public spaces. Our customers include some of the world's largest carriers, telecommunications service providers and global consumer brands, as well as Internet savvy consumers on the go and troops stationed at military bases.
	Initial public offering
	On May 3, 2011, our registration statement registering 3,846,800 shares of common stock offered by us and 1,923,200 shares offered by certain selling stockholders was declared effective by the United States Securities and Exchange Commission, and the shares began trading on the NASDAQ Global Market on May 4, 2011 under the symbol "WIFI." The proceeds from the sale of these shares are used primarily for working capital and other general corporate purposes. As a result of the initial public offering ("IPO"), we raised a total of approximately $45,701 in net proceeds after deducting underwriting discounts and commissions of approximately $3,635 and offering expenses of approximately $2,596. In connection with the IPO, all of the shares of our convertible preferred stock were converted into 22,845,764 shares of common stock and all of the warrants to purchase preferred stock were exercised and converted into 20,172 shares of common stock through net-share settlement.
	Reverse stock split
	On April 7, 2011, our board of directors approved a 5 for 1 reverse stock split of our outstanding common stock which was effected on May 3, 2011. Fractional shares were settled in cash totaling approximately $1 for common and preferred stockholders. No fractional shares were settled for option holders, and they were rounded down as a result of the reverse stock split. Shares of common stock underlying outstanding stock options and warrants and shares of our preferred stock and warrants were proportionately reduced and the respective exercise prices were proportionately increased in accordance with the terms of the agreements governing such securities. Shares of common stock reserved for issuance upon the conversion of our convertible preferred stock were proportionately reduced and the respective conversion prices were proportionately increased. All references to shares in the accompanying consolidated financial statements and the notes thereto, including but not limited to the number of shares and per share amounts, unless otherwise noted, have been adjusted to reflect the reverse stock split retroactively. Previously awarded options and warrants to purchase shares of our common and preferred stock have also been retroactively adjusted to reflect the reverse stock split.

Summary_of_significant_account

Summary of significant accounting policies	12 Months Ended
	Dec. 31, 2013
Summary of significant accounting policies	'
Summary of significant accounting policies	'
	2. Summary of significant accounting policies
	Basis of presentation and consolidation
	Our consolidated financial statements for the years ended December 31, 2013, 2012 and 2011 have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP").
	The accompanying consolidated financial statements include our accounts and our majority owned subsidiaries. We consolidate our 70% ownership of Concourse Communications Detroit, LLC, our 70% ownership of Chicago Concourse Development Group, LLC and our 75% ownership of Boingo Holding Participacoes Ltda. in accordance with Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") 810, Consolidation. Other parties' interests in consolidated entities are reported as non-controlling interests. All intercompany balances and transactions have been eliminated in consolidation.
	During the year ended December 31, 2013, the Company recorded certain out-of-period adjustments that decreased net loss attributable to common stockholders by $217. The impact of these out-of-period adjustments is not considered material, individually and in the aggregate, to any of the current or prior annual periods.
	The consolidated balance sheet as of December 31, 2012 has been revised to properly classify $2,066 of unbilled receivables from other non-current assets to accounts receivable, net. The revision has also been reflected in Note 5 to the consolidated financial statements. The impact of this revision is not material to the prior year consolidated balance sheet.
	Use of estimates
	The preparation of accompanying consolidated financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the dates of the accompanying consolidated financial statements, and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. Assets and liabilities which are subject to significant judgment and the use of estimates include the allowance for doubtful accounts, recoverability of goodwill and long-lived assets, valuation allowances with respect to deferred tax assets, uncertain tax positions, useful lives associated with property and equipment, valuation and useful lives of intangible assets, valuation of contingent consideration, and the valuation and assumptions underlying stock-based compensation and other equity instruments. On an ongoing basis, we evaluate our estimates compared to historical experience and trends, which form the basis for making judgments about the carrying value of assets and liabilities. In addition, prior to our IPO, we regularly engaged the assistance of valuation specialists in determining fair value measurements in connection with stock-based compensation and other equity instruments.
	Concentrations of credit risk
	Financial instruments that potentially subject us to significant concentrations of credit risk consist primarily of cash and cash equivalents, restricted cash, marketable securities and accounts receivable. We maintain our cash and cash equivalents, restricted cash and marketable securities with institutions with high credit ratings. We extend credit based upon the evaluation of the customer's financial condition and generally collateral is not required. We maintain an allowance for doubtful accounts based upon expected collectability of accounts receivable. We primarily estimate our allowance for doubtful accounts based on a specific review of significant outstanding accounts receivable. For the year ended December 31, 2013 two groups of affiliated entities each accounted for 14% of total revenue. For the year ended December 31, 2012, those same two groups of affiliated entities accounted for 17% and 15% of total revenue, respectively. For the year ended December 31, 2011, one group of affiliated entities accounted for 18% of total revenue. At December 31, 2013, one group of affiliated entities accounted for 12% of the total accounts receivable. At December 31, 2012, three groups of affiliated entities accounted for 26%, 16% and 10% of the total accounts receivable, respectively.
	Cash and cash equivalents
	Cash and cash equivalents include highly liquid investments that are readily convertible into known amounts of cash with original maturities of three months or less when acquired. At December 31, 2013, cash equivalents consisted of money market funds. At December 31, 2012, cash equivalents consisted of money market funds and marketable securities with original maturities of three months or less.
	Marketable securities
	Our marketable securities consist of available-for-sale securities with original maturities exceeding three months. In accordance with FASB ASC 320, Investments—Debt and Equity Securities, we have classified securities, which have readily determinable fair values and are highly liquid, as short-term because such securities are expected to be realized within a one- year period. At December 31, 2013 and 2012, we had $32,962 and $41,558, respectively, in short-term marketable securities and no long-term marketable securities.
	Marketable securities are reported at fair value with the related unrealized gains and losses reported as other comprehensive income (loss) until realized or until a determination is made that an other-than-temporary decline in market value has occurred. No significant unrealized gains and losses have been reported during the years presented. Factors considered by us in assessing whether an other-than-temporary impairment has occurred include the nature of the investment, whether the decline in fair value is attributable to specific adverse conditions affecting the investment, the financial condition of the investee, the severity and the duration of the impairment and whether we have the ability to hold the investment to maturity. When it is determined that an other-than-temporary impairment has occurred, the investment is written down to its market value at the end of the period in which it is determined that an other-than-temporary decline has occurred. The cost of marketable securities sold is based upon the specific identification method. Any realized gains or losses on the sale of investments are reflected as a component of interest and other income (expense), net.
	For the years ended December 31, 2013, 2012 and 2011, we had no significant realized or unrealized gains or losses from investments in marketable securities classified as available-for-sale.
	Restricted cash
	Restricted cash consists of letters of credit with our landlords, municipalities or venues for which we have operating agreements. Letters of credit are supported by cash deposits made by us and invested into bank certificates of deposit. At December 31, 2013 and 2012, we had $545 and $30 classified as short-term restricted cash, respectively. At December 31, 2013 and 2012, we had no restricted cash classified as long-term.
	Fair value of financial instruments
	Fair value is defined as the price that would be received from selling an asset, or paid to transfer a liability, in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at fair value, we consider the principal or most advantageous market in which it would transact, and we consider assumptions that market participants would use when pricing the asset or liability.
	The accounting guidance for fair value measurement also requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard establishes a fair value hierarchy based on the level of independent, objective evidence surrounding the inputs used to measure fair value. A financial instrument's categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The fair value hierarchy is as follows:
	•
	Level 1—Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities.
	•
	Level 2—Quoted prices for identical assets and liabilities in markets that are not active, quoted prices for similar assets and liabilities in active markets or financial instruments for which significant inputs are observable, either directly or indirectly.
	•
	Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
	The carrying amount reflected in the accompanying consolidated balance sheets for cash and cash equivalents, restricted cash, marketable securities, accounts receivable, prepaid expenses and other current assets, accounts payable, accrued expenses and other liabilities approximates fair value due to the short-term nature of these financial instruments.
	Business combinations
	The results of businesses acquired in a business combination are included in the Company's consolidated financial statements from the date of the acquisition. Purchase accounting results in assets and liabilities of an acquired business being recorded at their estimated fair values on the acquisition date. Any excess consideration over the fair value of assets acquired and liabilities assumed is recognized as goodwill.
	The Company performs valuations of assets acquired and liabilities assumed from a business acquisition and will allocate the purchase price to its respective net tangible and intangible assets. Determining the fair value of assets acquired and liabilities assumed requires management to use significant judgment and estimates including the selection of valuation methodologies, estimates of future revenues and cash flows, discount rates, royalty rates and selection of comparable companies. The Company engages the assistance of valuation specialists in concluding on fair value measurements in connection with fair values of assets and liabilities assumed in a business combination.
	Transaction costs associated with business combinations are expensed as incurred, and are included in general and administrative expenses in the consolidated statements of operations. Transaction costs were $354 and $50 for the years ended December 31, 2013 and 2012, respectively. There were no transaction costs for the year ended December 31, 2011.
	Property and equipment
	Property and equipment are generally stated at historical cost, less accumulated depreciation and amortization. The Company's cost basis includes property and equipment acquired in business combinations that were initially recorded at fair value as of the date of acquisition. Maintenance and repairs are charged to expense as incurred and the cost of additions and betterments that increase the useful lives of the assets are capitalized. Depreciation and amortization is computed over the estimated useful lives of the related asset type using the straight-line method.
	The estimated useful lives for property and equipment are as follows:
	Computer equipment	2 to 5 years
	Software	2 to 5 years
	Office equipment	3 to 5 years
	Leasehold improvements	The shorter of the estimated useful life or the remaining term of the agreements, generally ranging from 2 to 15 years
	Leasehold improvements are principally comprised of network equipment located at various managed and operated locations, primarily airports, under exclusive, long-term, non-cancelable contracts to provide wireless communication network access.
	Equipment and software under capital lease
	We lease certain data communications equipment, other equipment and software under capital lease agreements. The assets and liabilities under capital lease are recorded at the lesser of the present value of aggregate future minimum lease payments, including estimated bargain purchase options, or the fair value of the asset under lease. Assets under capital lease are depreciated using the straight-line method over the shorter of the estimated useful lives of the assets or the term of the lease agreements.
	Software development costs
	We capitalize costs associated with software developed or obtained for internal use when the preliminary project stage is completed and it is determined that the software will provide significantly enhanced capabilities and modifications. These capitalized costs are included in property and equipment and include external direct cost of services procured in developing or obtaining internal-use software and personnel and related expenses for employees who are directly associated with, and who devote time to internal-use software projects. Capitalization of these costs ceases once the project is substantially complete and the software is ready for its intended use. Once the software is ready for its intended use, the costs are amortized over the useful life of the software. Post-configuration training and maintenance costs are expensed as incurred.
	Long-lived assets
	Intangible assets consist of acquired venue contracts, technology, advertiser relationships, non-compete agreements and patents and trademarks. We record intangible assets at fair value as of the date of acquisition and amortize these finite-lived assets over the shorter of the contractual life or the estimated useful life on a straight-line basis. We estimate the useful lives of acquired intangible assets based on factors that include the planned use of each acquired intangible asset, the expected pattern of future cash flows to be derived from each acquired intangible asset and contractual periods specified in the related agreements. As such, we account for each of the venue contracts individually. We include amortization of acquired intangibles in amortization of intangible assets in the accompanying consolidated statements of operations.
	We perform an impairment review of long-lived assets held and used whenever events or changes in circumstances indicate that the carrying value may not be recoverable. Factors we consider important that could trigger an impairment review include, but are not limited to: significant under-performance relative to projected future operating results, significant changes in the manner of our use of the acquired assets or our overall business and product strategies and significant industry or economic trends. When we determine that the carrying value of a long-lived asset may not be recoverable based upon the existence of one or more of these indicators, we determine the recoverability by comparing the carrying amount of the asset to net future undiscounted cash flows that the asset is expected to generate or other indices of fair value. We would then recognize an impairment charge equal to the amount by which the carrying amount exceeds the fair market value of the asset.
	Goodwill
	Goodwill represents the excess of the purchase price over the fair value of net assets acquired in connection with the acquisition of Concourse Communication Group, LLC in June 2006, Cloud 9 Wireless, Inc. in August 2012, Endeka Group, Inc. in February 2013, and Electronic Media Systems, Inc. and Advanced Wireless Group, LLC in October 2013.
	We test goodwill for impairment in accordance with guidance provided by FASB ASC 350, Intangibles—Goodwill and Other ("ASC 350"). Goodwill is tested for impairment at least annually at the reporting unit level or whenever events or changes in circumstances indicate that goodwill might be impaired. Events or changes in circumstances which could trigger an impairment review include a significant adverse change in legal factors or in the business climate, an adverse action or assessment by a regulator, unanticipated competition, a loss of key personnel, significant changes in the manner of our use of the acquired assets or the strategy for our overall business, significant negative industry or economic trends, or significant underperformance relative to expected historical or projected future results of operations. We perform our impairment test annually as of December 31st.
	Entities have the option to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test described in FASB ASC 350. If, after assessing qualitative factors, an entity determines it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then performing the two-step impairment test is unnecessary. If deemed necessary, a two-step test is used to identify the potential impairment and to measure the amount of goodwill impairment, if any. The first step is to compare the fair value of the reporting unit with its carrying amount, including goodwill. If the fair value of the reporting unit exceeds its carrying amount, goodwill is considered not impaired; otherwise, there is an indication that goodwill may be impaired and the amount of the loss, if any, is measured by performing step two. Under step two, the impairment loss, if any, is measured by comparing the implied fair value of the reporting unit goodwill with the carrying amount of goodwill.
	Currently, we have one reporting unit, one operating segment and one reportable segment. At December 31, 2013 and 2012, all of the goodwill was attributed to our reporting unit. We tested our goodwill for impairment using a market based approach and no impairment was identified as the fair value of our reporting unit was substantially in excess of its carrying amount. To date, we have not recorded any goodwill impairment charges.
	Revenue recognition
	We generate revenue from several sources including: (i) platform service arrangements with wholesale customers that provide software licensing, network access, and professional services fees, (ii) wholesale customers that are telecom operators under long-term contracts for access to our DAS at our managed and operated locations, (iii) retail customers under subscription plans for month-to-month network access that automatically renew, and retail single-use access from sales of hourly, daily or other single-use access plans, and (iv) display advertisements and sponsorships on our walled garden sign-in pages. Software licensed by our wholesale platform services customers can only be used during the term of the service arrangements and has no utility to them upon termination of the service arrangement.
	We recognize revenue when an arrangement exists, services have been rendered, fees are fixed or determinable, no significant obligations remain related to the earned fees and collection of the related receivable is reasonably assured.
	Services provided to wholesale partners under platform service arrangements generally contain several elements including: (i) a term license to use our software to access our Wi-Fi network, (ii) access fees for network usage, and (iii) professional services for software integration and customization and to maintain the Wi-Fi service. The term license, monthly minimum network access fees and professional services are billed on a monthly basis based upon predetermined fixed rates. Once the term license for integration and customization are delivered, the fees from the arrangement are recognized ratably over the remaining term of the platform service arrangement. The initial term of platform service license agreements is generally between one to five years and the agreements generally contain renewal clauses. Revenue for network access fees in excess of the monthly minimum amounts is recognized when earned. All elements within existing platform service arrangements are generally delivered and earned concurrently throughout the term of the respective service arrangement.
	Revenue generated from access to our DAS networks consists of build-out fees and recurring access fees under certain long-term contracts with telecom operators. Build-out fees paid upfront are generally deferred and recognized ratably over the term of the estimated customer relationship period, once the build-out is complete. Minimum monthly access fees for usage of the DAS networks are non-cancellable and generally escalate on an annual basis. These minimum monthly access fees are recognized ratably over the term of the telecom operator agreement. The initial term of our contracts with telecom operators and wholesale partners generally range from three to fifteen years and the agreements generally contain renewal clauses. Revenue from network access fees in excess of the monthly minimums is recognized when earned.
	In instances where the minimum monthly network access fees escalate over the term of the wholesale service arrangement, an unbilled receivable is recognized when performance is within our control and when we have reasonable assurance that the unbilled receivable balance will be collected.
	We adopted the provisions of Accounting Standards Update ("ASU") 2009-13, Revenue Recognition (Topic 605)—Multiple-Deliverable Revenue Arrangements ("ASU 2009-13"), on a prospective basis on January 1, 2011. For multiple-deliverable arrangements entered into prior to January 1, 2011 that are accounted for under ASC 605-25, Revenue Recognition—Multiple-Deliverable Revenue Arrangements, we defer recognition of revenue for the full arrangement and recognize all revenue ratably over the wholesale service period for platform service arrangements and the term of the estimated customer relationship period for DAS arrangements, as we do not have evidence of fair value for the undelivered elements in the arrangement. For multiple-deliverable arrangements entered into or materially modified after January 1, 2011 that are accounted for under ASC 605-25, we evaluate whether or not separate units of accounting exist and then allocate the arrangement consideration to all units of accounting based on the relative selling price method using estimated selling prices if vendor specific objective evidence and third party evidence is not available. We recognize the revenue associated with the separate units of accounting upon completion of such services or ratably over the wholesale service period for platform service arrangements and the term of the estimated customer relationship period for DAS arrangements.
	Subscription fees from retail customers are paid monthly in advance and revenue is deferred for the portions of monthly recurring subscription fees collected in advance. We do not have a stated or published refund policy for our Wi-Fi service, although our customer service representatives will provide a refund on a case-by-case basis. These amounts are not significant and are recorded as contra-revenue in the period the refunds are made. Subscription fee revenue is recognized ratably over the subscription period. Revenue generated from retail single-use access is recognized when earned.
	Advertising revenue is generated from advertisements on our managed and operated or partner networks. In determining whether an arrangement exists, we ensure that a binding arrangement is in place, such as a standard insertion order or a fully executed customer-specific agreement. Obligations pursuant to our advertising revenue arrangements typically include a minimum number of units or the satisfaction of certain performance criteria. Advertising and other revenue is recognized when the services are performed.
	Network access
	Network access costs consist primarily of revenue share payments to venue owners where our managed and operated hotspots are located, usage-based fees to our roaming network partners for access to their networks, depreciation of equipment related to network build-out projects in our managed and operated locations, and bandwidth and other Internet connectivity expenses in our managed and operated locations.
Advertising, marketing and promotion costs
Advertising production costs are expensed the first time the advertisement is run. No advertising production costs were capitalized for the years ended December 31, 2013, 2012 and 2011. All other costs of advertising, marketing and promotion are expensed as incurred. Advertising expenses charged to operations totaled $2,302, $2,374 and $1,393 for the years ended December 31, 2013, 2012 and 2011, respectively.
Stock-based compensation
Our stock-based compensation consists of stock options and restricted stock units ("RSU") granted to employees and non-employees.
We recognize stock-based compensation expense in accordance with guidance provided by FASB ASC 718, Compensation—Stock Compensation ("ASC 718"). We measure employee stock-based compensation cost at grant date, based on the estimated fair value of the award and recognize the cost on a straight-line basis, net of estimated forfeitures, over the employee requisite service period. We estimate the fair value of stock options using a Black-Scholes option pricing model. The model requires input of assumptions regarding expected term, expected volatility, dividend yield, and a risk-free interest rate. The weighted average assumptions that were used to calculate the grant date fair value of our employee stock option grants for the following periods are as follows:
	December 31,
	2013			2012			2011
Expected term (years)		6.25			5.9			6.4
Expected volatility		49.31	%		48.9	%		49.8	%
Risk-free interest rate		1.34	%		0.9	%		2.4	%
Dividend yield		0	%		0	%		0	%
The expected term of employee stock options represents the weighted-average period that the stock options are expected to remain outstanding. In estimating the expected term for options granted to employees, we applied the simplified method from the Security Exchange Commission ("SEC") Staff Accounting Bulletin ("SAB") Topic 14, Share-Based Payment ("SAB Topic 14"), where options are granted at-the-money. Where options were not granted at-the-money, the expected term of employee stock options represents the weighted-average period that the stock options are expected to remain outstanding and is calculated based upon actual historical exercise and post-vesting cancellations, adjusted for expected future exercise behavior.
We determine the fair value of common stock underlying the stock option awards by reference to third party sales of our common stock. Prior to our IPO, the fair value of common stock underlying the stock option awards was determined with the assistance of a third-party valuation specialist.
We determined the expected volatility assumption using the frequency of daily historical prices of comparable public companies' common stock for a period equal to the expected term of the options in accordance with guidance in ASC 718 and SAB Topic 14. We will continue to monitor peer companies and other relevant factors, including our volatility after there is enough history, used to measure expected volatility for future stock option grants.
The risk-free interest rate assumption is based upon observed interest rates on the United States government securities appropriate for the expected term of our employee stock options.
The dividend yield assumption is based on our history and expectation of dividend payouts for which no cash dividends have been declared or paid on our common stock, and for which none are anticipated in the foreseeable future.
As stock-based compensation expense recognized in our accompanying consolidated statements of operations is based on awards ultimately expected to vest, the amount has been reduced for estimated forfeitures. ASC 718 requires forfeitures to be estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. Forfeitures were estimated based on our historical experience and future expectations.
Compensation expense for non-employee stock-based awards is recognized in accordance with ASC 718 and FASB ASC 505, Equity. Stock option awards issued to non-employees are accounted for at fair value using the Black-Scholes option pricing model. Management believes that the fair value of the stock options is more reliably measured than the fair value of the services received. We record compensation expense based on the then-current fair value of the stock options at each financial reporting date. Compensation recorded during the service period is adjusted in subsequent periods for changes in the stock options' fair value until the earlier of the date at which the non-employee's performance is complete or a performance commitment is reached, which is generally when the stock award vests. There was $30, $372 and $515 of stock-based compensation expense recognized for non-employee stock-based awards for the years ended December 31, 2013, 2012 and 2011, respectively.
Income taxes
We account for income taxes in accordance with FASB ASC 740, Accounting for Income Taxes ("ASC 740"), which requires the recognition of deferred tax assets and liabilities for the future consequences of events that have been recognized in our accompanying consolidated financial statements or tax returns. The measurement of the deferred items is based on enacted tax laws. In the event the future consequences of differences between financial reporting bases and the tax bases of our assets and liabilities result in a deferred tax asset, ASC 740 requires an evaluation of the probability of being able to realize the future benefits indicated by such asset. A valuation allowance related to a deferred tax asset is recorded when it is more likely than not that some portion or the entire deferred tax asset will not be realized. As part of the process of preparing our accompanying consolidated financial statements, we are required to estimate our income taxes in each of the jurisdictions in which we operate. We also assess temporary differences resulting from differing treatment of items, such as deferred revenue, for tax and accounting differences. We record a valuation allowance to reduce the deferred tax assets to the amount of future tax benefit that is more likely than not to be realized.
ASC 740 prescribes a recognition threshold and measurement methodology to recognize and measure an income tax position taken, or expected to be taken, in a tax return. The evaluation of a tax position is based on a two-step approach. The first step requires an entity to evaluate whether the tax position would "more likely than not" be sustained upon examination by the appropriate taxing authority. The second step requires the tax position be measured at the largest amount of tax benefit that is greater than 50% likely of being realized upon ultimate settlement. In addition, previously recognized benefits from tax positions that no longer meet the new criteria would no longer be recognized. Changes in recognition or measurement are reflected in the period in which the change occurs.
Non-controlling interests
Non-controlling interests are comprised of minority holdings in Concourse Communications Detroit, LLC ("CCG Detroit"), Chicago Concourse Development Group, LLC ("CCDG") and Boingo Holding Participacoes Ltda ("BHPL").
Under the terms of the limited liability company ("LLC") agreement for CCG Detroit ("Detroit Operating Agreement") profits and losses are allocated to the controlling and non-controlling owners based on specified terms in the Detroit Operating Agreement which reflect the relative risk and reward of each owner. The profit and loss allocation in the Detroit Operating Agreement specifies that the non-controlling owners' allocated profits are limited to the fixed distribution amounts and losses are limited to the non-controlling owners capital account balance with losses in excess of their capital account being fully allocated to the controlling common unit holder. There is no specified term in the Detroit Operating Agreement, but the term of the annual fixed distribution obligation to the non-controlling owner is the same as the term of the venue agreement between CCG Detroit and Detroit Metropolitan Wayne County Airport—which has a seven year initial term with options to extend for an additional four years. We allocate profits and losses in CCG Detroit based on the attribution in the Detroit Operating Agreement. CCG Detroit has generated losses which reduced the non-controlling owners capital account to zero in 2009 resulting in an allocation to the controlling interest holder all operating losses and deficits created by the annual fixed distributions to the non-controlling interest holder. The fixed distributions were terminated during September 2013 concurrent with the termination of CCG Detroit's agreement with Detroit Metropolitan Wayne County Airport. For the years ended December 31, 2013, 2012 and 2011, we made distributions of $48, $121 and $85, respectively, to non-controlling interest holders of CCG Detroit.
Under the terms of the LLC agreement for CCDG, we are required to distribute annually to the CCDG non-controlling interest holders 30% of allocated net profits less capital expenditures of the preceding year. For the years ended December 31, 2013, 2012 and 2011, we made distributions of $560, $557 and $462, respectively, to non-controlling interest holders of CCDG.
BHPL was formed at the end of 2012. Under the terms of the LLC agreement for BHPL, we attributed profits and losses to the non-controlling interest in BHPL in proportion to their holdings. For the year ended December 31, 2013, we made no distributions to the non-controlling interest holder of BHPL.
Convertible preferred stock
The convertible preferred stock contained puttable redemption features and deemed liquidation preferences upon a change-in-control, which were considered outside of the control the Company. Accretion of related issuance costs and dividends were recorded as a charge against retained earnings, or in the absence of retained earnings by charges against additional paid-in capital until fully depleted, then against the accumulated deficit. We accrete issuance costs and dividends to the earliest redemption date. For the year ended December 31, 2011, we accreted our convertible preferred stock through to their conversion date into common stock on May 3, 2011 in connection with our IPO. At December 31, 2013 and 2012, we had no preferred stock issued or outstanding.
Warrants exercisable into convertible preferred stock
We account for preferred stock warrants as liabilities when the underlying preferred stock contains either puttable or mandatorily redeemable features. We issued warrants which were exercisable into the Series B convertible preferred stock in connection with capital lease arrangements. We determined that the preferred stock warrants contained puttable features as a result of the redemption provisions and deemed liquidation preferences upon a change-in-control. Accordingly, the warrants were recorded as a non-current liability and were carried at their fair value at date of issuance with decreases or increases in fair value at each reporting date recorded as other income or expense through to the final measurement date upon the exercise of the warrants. The warrants were exercisable either through cash payment of the exercise price or through net-share settlement at the option of the holder. Our preferred stock warrants outstanding of 25,196 were exercised and converted under the net-share settlement provisions into 20,172 shares of our common stock on May 3, 2011, in connection with our IPO.
Net (loss) income per share attributable to common stockholders
Basic net (loss) income per share attributable to common stockholders is calculated by dividing (loss) income attributable to common stockholders by the weighted average number of shares of common stock outstanding during the period. Diluted net income per share attributable to common stockholders adjusts the basic weighted average number of shares of common stock outstanding for the potential dilution that could occur if stock options, RSUs, common stock warrants, preferred stock warrants and the convertible preferred stock were exercised or converted into common stock. Our convertible preferred stockholders were entitled to receive dividends and were not contractually obligated to share in our net income with common stockholders. The common stockholders are not entitled to receive any dividends.
Segment and geographic information
We operate as one reportable segment; a service provider of mobile Internet solutions across our managed and operated network and aggregated network for mobile devices such as laptops, smartphones, tablet computers and other wireless-enabled consumer devices. This single segment is consistent with the internal organization structure and the manner in which operations are reviewed and managed by our Chief Executive Officer, the chief operating decision maker.
Revenue is predominantly generated and all significant long-lived tangible assets are held in the United States of America. We do not disclose sales by geographic area because to do so would be impracticable. The following is a summary of our revenue by primary revenue source:
	Year Ended December 31,
	2013			2012			2011
Revenue:
Wholesale	$	49,942		$	49,495		$	43,707
Retail subscription		34,325			32,716			29,033
Retail single-use		10,129			13,429			16,054
Advertising and other		12,350			6,866			5,764
Total revenue	$	106,746		$	102,506		$	94,558
Reclassifications
Certain 2012 and 2011 amounts have been reclassified to conform to the current year presentation.
Recent accounting pronouncements
In July 2013, the FASB issued ASU 2013-11, Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists ("ASU 2013-11"). This ASU requires the netting of unrecognized tax benefits (UTBs) against a deferred tax asset for a loss or other carryforward that would apply in the settlement of the uncertain tax positions. The UTBs will be netted against all available same-jurisdiction loss or other tax carryforwards that would be utilized, rather than only against carryforwards that are created by the UTBs. ASU 2013-11 will require prospective application with optional retrospective application, and will be effective for reporting periods beginning after December 15, 2013. Early adoption is permitted. We have effectively adopted the provisions of this requirement as of the date of issuance of ASU 2013-11 as we have historically presented our UTBs as a reduction of our deferred tax assets for a loss or other carryforward rather than as a liability when the uncertain tax position would reduce the loss or other carryforward under the tax law.
In February 2013, the FASB issued ASU 2013-02, Comprehensive Income—Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income ("ASU 2013-02"). This ASU requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income ("AOCI") by component. In addition, an entity is required to present, either on the face of the statement where net income (loss) is presented or in the notes, significant amounts reclassified out of AOCI by the respective line items of net income (loss) but only if the amount reclassified is required under GAAP to be reclassified to net income (loss) in its entirety in the same reporting period. For other amounts that are not required under GAAP to be reclassified in their entirety to net income (loss), an entity is required to cross-reference to other disclosures required under GAAP that provide additional detail about those amounts. ASU 2013-02 was effective prospectively for reporting periods beginning after December 15, 2012. We adopted this standard effective January 1, 2013. The adoption of this standard did not have any impact on our consolidated financial statements.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2013
Acquisitions	'
Acquisitions	'
	3. Acquisitions
	Electronic Media Systems, Inc. and Advanced Wireless Group, LLC
	On October 31, 2013, we acquired all outstanding stock of Electronic Media Systems, Inc. and all membership interests in its subsidiary, Advanced Wireless Group, LLC, not otherwise owned by Electronic Media Systems, Inc. such that we are now the beneficial owner of all membership interests of Advanced Wireless, Group, LLC (collectively, "AWG"). AWG operates public Wi-Fi in seventeen U.S. airports including Los Angeles International, Charlotte/Douglas International, Miami International, Minneapolis-St. Paul International, Detroit Metropolitan Airport, and Boston's Logan International. We have included the operating results of AWG in our consolidated financial statements since the date of acquisition.
	The acquisition has been accounted for under the acquisition method of accounting in accordance with FASB ASC 805, Business Combinations. As such, the assets acquired and liabilities assumed are recorded at their acquisition-date fair values. The total purchase price was $17,380, which includes cash paid at closing, holdback consideration to be paid and the fair value of additional contingent consideration that would be due and payable upon the successful extension of a specified airport Wi-Fi contract. The total purchase price includes estimated net equity adjustments that may be subject to additional adjustments.
	The fair value of the contingent consideration is based on Level 3 inputs. Further changes in the fair value of the contingent consideration will be recorded through operating (loss) income. We allocated the excess of the purchase price over the fair value of assets acquired and liabilities assumed to goodwill, which is primarily not deductible for tax purposes. The goodwill arising from the AWG acquisition is attributable primarily to expected synergies and other benefits, including the acquired workforce, from combining AWG with us.
	The deferred tax liabilities are provisional pending the filing of AWG's final short period 2013 tax returns. The contingent consideration was valued at the date of acquisition using a discount rate of 3.1% and is expected to be paid in 2014. The identifiable intangible assets were primarily valued using the excess earnings, relief from royalty, with-and-without and replacement cost methods using discount rates ranging from 12.0% to 14.0% and royalty rates of 0.5%.
	The amortizable intangible assets are being amortized straight-line over their estimated useful lives. The following summarizes the preliminary purchase price allocation:
		Estimated Fair Value			Weighted Average
					Estimated Useful
					Life (years)
	Consideration:
	Cash paid	$	14,800
	Holdback consideration		1,600
	Contingent consideration		980
	Total consideration	$	17,380
	Recognized amounts of identifiable assets acquired and liabilities assumed:
	Cash	$	215
	Restricted cash		515
	Accounts receivable		988
	Other current assets		609
	Property and equipment		2,297
	Accounts payable		(563	)
	Accrued expenses		(515	)
	Other current liabilities		(134	)
	Capital lease obligations		(932	)
	Other non-current liabilities		(130	)
	Deferred tax liabilities		(3,561	)
	Net tangible liabilities acquired		(1,211	)
	Existing airport contracts and relationships		4,700			6.7
	Technology		270			6
	Trademark and tradename		120			3
	Non-compete agreement		3,590			5
	Goodwill		9,911
	Total purchase price	$	17,380
	Endeka Group, Inc.
	On February 22, 2013, we acquired all outstanding stock of Endeka Group, Inc. ("Endeka"). Endeka is a provider of commercial wireless broadband and IPTV services at certain military bases, as well as Wi-Fi services to certain federal law enforcement training facilities. We acquired Endeka because Endeka's portfolio of venues and management team are natural additions to our managed network business. We have included the operating results of Endeka in our consolidated financial statements since the date of acquisition.
	The acquisition has been accounted for under the acquisition method of accounting in accordance with FASB ASC 805. As such, the assets acquired and liabilities assumed are recorded at their acquisition-date fair values. The total purchase price was $6,498, which includes cash paid at closing, holdback consideration to be paid and the fair value of additional contingent consideration comprised of two components: (i) a payment ("Build Payment") if the amount of the capital expenditures incurred for the substantial completion of a specified build project is less than a target; and (ii) a payment ("Milestone Payment") based on revenue generated by certain contracts in fiscal year 2014. There is no maximum to the contingent consideration payments for the Milestone Payment. We do not expect to make any payments associated with the Build Payment. The holdback consideration will be paid in 2014 and the Milestone Payment will be paid on February 28, 2015.
	The fair value of the contingent consideration is based on Level 3 inputs. Further changes in the fair value of the contingent consideration will be recorded through operating (loss) income. We allocated the excess of the purchase price over the fair value of assets acquired and liabilities assumed to goodwill, which is not deductible for tax purposes. The goodwill arising from the Endeka acquisition is attributable primarily to expected synergies and other benefits, including the acquired workforce, from combining Endeka with us.
	The contingent consideration was valued at the date of acquisition using a discounted cash flow method with probability weighted cash flows and a discount rate of 50.5%. The identifiable intangible assets were primarily valued using the excess earnings, relief from royalty, and replacement cost methods using discount rates ranging from 40.0% to 50.0% and royalty rates ranging from 0.5% to 1.5%, where applicable.
	The amortizable intangible assets are being amortized straight-line over their estimated useful lives. The following summarizes the final purchase price allocation:
		Estimated Fair Value			Estimated Useful
					Life (years)
	Consideration:
	Cash paid	$	4,894
	Holdback consideration		275
	Contingent consideration		1,329
	Total consideration	$	6,498
	Recognized amounts of identifiable assets acquired and liabilities assumed:
	Cash	$	20
	Other current assets		44
	Property and equipment		4,617
	Other assets		12
	Accounts payable		(992	)
	Other current liabilities		(211	)
	Notes payable and financed liabilities		(6,476	)
	Deferred tax liabilities		(2,637	)
	Net tangible liabilities acquired		(5,623	)
	Existing customer contracts and relationships		4,770			10
	Technology		930			6
	Trademark and tradename		300			10
	Non-compete agreement		250			2
	Other intangibles		95			10
	Goodwill		5,776
Total purchase price	$	6,498
Pro forma results (Unaudited)
The following table presents the unaudited pro forma results of the Company for the years ended December 31, 2013 and 2012 as if the acquisitions of Endeka and AWG had occurred on January 1, 2012. These results are not intended to reflect the actual operations of the Company had the acquisition occurred on January 1, 2012. Acquisition transaction costs have been excluded from the pro forma net (loss) income. We did not record any incremental income taxes for pro forma net (loss) income because we established a valuation allowance in 2013. Income taxes for purposes of the 2012 pro forma net (loss) income were computed based on the statutory tax rates.
	For the Years Ended
	December 31,
	2013			2012
	(Unaudited)
Revenue	$	114,492		$	110,957
Net (loss) income	$	(4,945	)	$	5,991
Cloud 9 Wireless, Inc.
On August 6, 2012, we acquired the assets of Cloud 9 Wireless, Inc. ("Cloud 9") for $3,500 plus the assumption of certain liabilities. Cloud 9 provides Wi-Fi sponsorship and location-based advertising at airports, hotels, bars and restaurants, and recreational areas in the U.S. and Canada. The acquisition has been accounted for under the acquisition method of accounting in accordance with the FASB ASC 805. The excess of the acquisition consideration over the fair value of assets acquired and liabilities assumed is allocated to goodwill, which is deductible for tax purposes. Goodwill is attributable primarily to expected synergies and other benefits, including the acquired workforce, from combining Cloud 9 with us. Cloud 9 was consolidated into our results of operations starting August 6, 2012, the acquisition date. Cloud 9 has been integrated into the Company's product offering; therefore, it is not practical to disclose actual and pro forma financial results for Cloud 9 since the acquisition.
The following table summarizes the allocation of the total purchase price as of August 6, 2012:
Current assets	$	899
Property, plant and equipment		65
Intangible and other assets		1,758
Goodwill		1,232
Current liabilities		(454	)
Net assets acquired	$	3,500
The intangible assets are all definite-lived intangibles and are recognized on a straight-line basis over their weighted average lives of approximately 5 years.

Cash_and_cash_equivalents_and_

Cash and cash equivalents and marketable securities	12 Months Ended
	Dec. 31, 2013
Cash and cash equivalents and marketable securities	'
Cash and cash equivalents and marketable securities	'
	4. Cash and cash equivalents and marketable securities
	Cash and cash equivalents, and marketable securities consisted of the following:
		December 31,
		2013		2012
	Cash and cash equivalents:
	Cash	$	3,655	$	16,677
	Money market accounts		23,683		39,001
	Marketable securities		—		2,460
	Total cash and cash equivalents	$	27,338	$	58,138
	Short-term marketable securities:
	Marketable securities	$	32,962	$	41,558
	Total short-term marketable securities	$	32,962	$	41,558
	All contractual maturities of marketable securities were less than one year at December 31, 2013 and 2012. These consist primarily of corporate securities which include commercial paper and corporate debt instruments including notes issued by foreign or domestic corporations which pay in U.S. dollars and carry a rating of A or better.
	For the years ended December 31, 2013, 2012 and 2011, interest income was $181, $183 and $37, respectively, which is included in interest and other income (expense), net in the accompanying consolidated statements of operations.

Accounts_receivables_net_and_o

Accounts receivables, net and other receivables	12 Months Ended
	Dec. 31, 2013
Accounts receivables, net and other receivables	'
Accounts receivables, net and other receivables	'
	5. Accounts receivables, net and other receivables
	Accounts receivable, net of allowances for doubtful accounts and other receivables consisted of the following:
		December 31,
		2013			2012
	Trade receivables, net of allowances	$	12,799		$	10,977
	Unbilled access fees		2,036			1,957
	Unbilled platform service arrangements		1,491			109
	Accounts receivable, net	$	16,326		$	13,043
	Unbilled access fees	$	264		$	838
	Unbilled platform service arrangements		16			287
	Non-current other receivables	$	280		$	1,125
	Access fees are recorded under long-term contracts with our wholesale partners that are telecom operators for access to our DAS at our managed and operated locations. Platform service fees are recorded under long-term contracts with our wholesale partners. These access and platform service fees escalate on an annual basis from which we receive fixed contractual payments and recognize revenue ratably over the term of the contracts.
	Included in accounts receivables, net for the periods indicated was the allowance for doubtful accounts which consisted of the following:
		Allowance for Doubtful Accounts
	Balance, December 31, 2010	$	107
	Additions charged to operations		115
	Deductions from reserves, net		(45	)
	Balance, December 31, 2011		177
	Additions charged to operations		45
	Deductions from reserves, net		(43	)
	Balance, December 31, 2012		179
	Additions charged to operations		209
	Deductions from reserves, net		(43	)
	Balance, December 31, 2013	$	345

Accrued_expenses_and_other_lia

Accrued expenses and other liabilities	12 Months Ended
	Dec. 31, 2013
Accrued expenses and other liabilities	'
Accrued expenses and other liabilities	'
	6. Accrued expenses and other liabilities
	Accrued expenses and other liabilities consisted of the following:
		December 31,
		2013		2012
	Salaries and wages	$	3,024	$	3,312
	Revenue share		4,598		3,676
	Accrued partner network		736		1,134
	Accrued for construction in progress		2,717		1,003
	Deferred rent		853		791
	Holdback liabilities		1,875		—
	Contingent consideration		980		—
	Other		1,599		1,061
	Total accrued expenses and other liabilities	$	16,382	$	10,977

Property_and_equipment

Property and equipment	12 Months Ended
	Dec. 31, 2013
Property and equipment	'
Property and equipment	'
	7. Property and equipment
	The following is a summary of property and equipment, at cost less accumulated depreciation and amortization:
		December 31,
		2013			2012
	Leasehold improvements	$	97,462		$	72,119
	Construction in progress		18,157			6,295
	Computer equipment		7,372			7,493
	Software		10,452			7,519
	Office equipment		412			411
	Total property and equipment		133,855			93,837
	Less: accumulated depreciation and amortization		(66,295	)		(51,426	)
	Total property and equipment, net	$	67,560		$	42,411
	Included in property and equipment at December 31, 2013 and 2012 was equipment acquired under capital leases totaling $1,220 and $402, respectively, and related accumulated depreciation and amortization of $191 and $224, respectively.
	Depreciation and amortization expense is allocated as follows on the accompanying consolidated statements of operations:
		For the Years Ended
		December 31,
		2013			2012			2011
	Network access	$	12,651		$	11,948		$	8,867
	Network operations		4,091			2,844			2,444
	Development and technology		1,992			1,049			873
	General and administrative		206			117			117
	Total depreciation and amortization of property and equipment	$	18,940		$	15,958		$	12,301

Goodwill_and_intangible_assets

Goodwill and intangible assets	12 Months Ended
	Dec. 31, 2013
Goodwill and intangible assets	'
Goodwill and intangible assets	'
	8. Goodwill and intangible assets
	Goodwill
	The following table sets forth the changes in our goodwill balance, for all periods presented:
		Goodwill
	Balance, December 31, 2011	$	25,512
	Acquisition of Cloud 9		1,232
	Balance, December 31, 2012		26,744
	Acquisition of Endeka		5,776
	Acquisition of AWG		9,911
	Balance, December 31, 2013	$	42,431
	Intangible assets
	The following table sets forth the changes in our intangible assets balance, for all periods presented:
		Intangible
		Assets
	Balance, December 31, 2011	$	9,846
	Additions		1,851
	Amortization expense		(1,103	)
	Balance, December 31, 2012		10,594
	Additions		15,069
	Amortization expense		(2,250	)
	Balance, December 31, 2013	$	23,413
	Intangible assets at December 31, 2013 consist of the following:
		Weighted		Historical		Accumulated			Net
		Average		Cost		Amortization
		Life
	Venue contracts	10 years		$	36,356	$	(19,314	)	$	17,042
	Non-compete agreements	5 years			3,840		(224	)		3,616
	Technology	6 years			2,300		(441	)		1,859
	Advertiser relationships	5 years			70		(20	)		50
	Patents, trademarks and other	6 years			1,408		(562	)		846
				$	43,974	$	(20,561	)	$	23,413
	Intangible assets at December 31, 2012 consist of the following:
		Weighted		Historical		Accumulated			Net
		Average		Cost		Amortization
		Life
	Venue contracts	11 years		$	26,886	$	(17,783	)	$	9,103
	Technology	5 years			1,110		(93	)		1,017
	Advertiser relationships	5 years			70		(6	)		64
	Patents, trademarks and other	5 years			839		(429	)		410
	Total			$	28,905	$	(18,311	)	$	10,594
	Amortization expense for fiscal years 2014 through 2018 and thereafter is as follows:
	Year	Amortization
		Expense
	2014	$	3,681
	2015		3,525
	2016		3,451
	2017		3,218
	2018		2,370
	Thereafter		7,168
		$	23,413

Fair_value_measurement

Fair value measurement	12 Months Ended
	Dec. 31, 2013
Fair value measurement	'
Fair value measurement	'
	9. Fair value measurement
	The following table sets forth our financial assets that are measured at fair value on a recurring basis:
	At December 31, 2013	Level 1			Level 2		Level 3		Total
	Assets:
	Cash equivalents	$	23,683		$	—	$	—	$	23,683
	Marketable securities		—			32,962		—		32,962
	Restricted cash		545			—		—		545
	Total assets	$	24,228		$	32,962	$	—	$	57,190
	Liabilities:
	Contingent consideration	$	—		$	—	$	1,942	$	1,942
	Total liabilities	$	—		$	—	$	1,942	$	1,942
	At December 31, 2012	Level 1			Level 2		Total
	Assets:
	Cash equivalents	$	39,001		$	2,460	$	41,461
	Marketable securities		—			41,558		41,558
	Restricted cash		30			—		30
	Total assets	$	39,031		$	44,018	$	83,049
	Our marketable securities utilize Level 2 inputs and consist primarily of corporate securities which include commercial paper and corporate debt instruments including notes issued by foreign or domestic corporations which pay in U.S. dollars and carry a rating of A or better. We have evaluated the various types of securities in our investment portfolio to determine an appropriate fair value hierarchy level based upon trading activity and the observability of market inputs. Due to variations in trading volumes and the lack of quoted market prices in active markets, our fixed maturities are classified as Level 2 securities.
	The fair value of our fixed maturity marketable securities is derived through the use of a third party pricing source or recent reported trades for identical or similar securities, making adjustments through the reporting date based upon available market observable data.
	The Company used the income approach to value the contingent consideration as of December 31, 2013. The contingent consideration used a discounted cash flow method with probability weighted cash flows and a discount rate of 25.0% for Endeka. The contingent consideration used a discount rate of 3.1% for AWG. The following table presents a reconciliation of the beginning and ending amounts related to the fair value of contingent consideration for the Endeka and AWG acquisitions, categorized as Level 3:
	Beginning balance, January 1, 2013	$	—
	Contingent consideration for acquisition of businesses		2,309
	Change in fair value		(367	)
	Balance, December 31, 2013	$	1,942

Stockholders_equity

Stockholders' equity	12 Months Ended
	Dec. 31, 2013
Stockholders' equity	'
Stockholders' equity	'
	10. Stockholders' equity
	Convertible preferred stock
	Each share of Series A, Series A-2, Series B and Series C convertible preferred stock was immediately convertible, at the holder's option, into shares of common stock based on the formula of the issuance price divided by the conversion price. The conversion price was $3.00 for Series A and B convertible preferred stock, $4.026072935 for Series A-2 convertible preferred stock and $4.95835 for Series C convertible preferred stock. Each share of Series A and Series B convertible preferred stock was convertible into one share of common stock. Series A-2 convertible preferred stock was convertible into shares of common stock as obtained by multiplying the number of shares of the convertible stock by $4.30 and dividing the result by the conversion price of $4.026072935 per share, which approximates a 1 for 1.07 shares of common stock conversion rate. Series C convertible preferred stock was convertible into shares of common stock as obtained by multiplying the number of shares of the convertible stock by $5.95 and dividing the result by the conversion price of $4.95835 per share, which approximates a 1 for 1.2 shares of common stock conversion rate. Conversion of each share of Series A, Series A-2, Series B and Series C convertible preferred stock was automatic upon the completion of our IPO.
	The holders of the Series A, Series A-2, Series B and Series C convertible preferred stock were also entitled to receive cumulative dividends, whether or not earned or declared, out of funds legally available therefore, at the rate of $0.15 per share per annum for the Series A and Series B convertible preferred stock, $0.215 for the Series A-2 convertible preferred stock and $0.2975 for the Series C convertible preferred stock (the "accruing dividends"). Accruing dividends accrued on each share of convertible preferred stock from the date of issuance until the earlier of (i) a liquidation, dissolution or winding up of the company, including an acquisition, consolidation or merger, or the sale of all or substantially all of the assets of the company (a "liquidation event") and (ii) the date of redemption. We accrued dividends in the year ended December 31, 2011, which were accreted in the respective carrying values of the convertible preferred stock before they were converted into common stock.
	Reserve for unissued shares
	At December 31, 2013 and 2012, we are authorized to issue up to 100,000,000 shares of common stock. We are required to reserve and keep available out of our authorized but unissued shares of common stock such number of shares sufficient to effect the exercise of all outstanding common stock warrants, plus shares granted and available for grant under our Amended and Restated 2001 Stock Incentive Plan (the "2001 Plan") and 2011 Equity Incentive Plan (the "2011 Plan").
	The amount of such shares of common stock reserved for these purposes is as follows:
		December 31,		December 31,
		2013		2012
		(in thousands)
	Outstanding stock options under the 2001 Plan		1,859		2,345
	Outstanding stock options under the 2011 Plan		3,096		2,700
	Outstanding RSUs under the 2011 Plan		753		—
	Shares available for grant under the 2011 Plan		3,259		2,811
	Total		8,967		7,856
	Note receivable from stockholder
	During 2002, we granted 290,000 shares of restricted common stock to an officer at the deemed fair value of $0.30 per share in exchange for cash proceeds of approximately $9 and issuance of a partial recourse note ("Note") of approximately $78 payable with an interest rate equal to the applicable federal rate. On January 11, 2011, we forgave the Note and the principal and interest outstanding of $103 was expensed as compensation. Interest accrued on the Note, and was included in interest and other income (expense), net in the accompanying consolidated statements of operations.
	Treasury stock
	On July 29, 2011, we approved the retirement of all 1,256,608 outstanding shares of treasury stock. The treasury stock, at cost, of $4,575 was transferred to additional paid-in capital in the accompanying consolidated statements of convertible preferred stock and stockholder's equity (deficit).
	Common stock warrants
	On June 28, 2011, our 26,322 common stock warrants outstanding were exercised into 21,525 shares of common stock on a net exercise basis.

Income_taxes

Income taxes	12 Months Ended
	Dec. 31, 2013
Income taxes	'
Income taxes	'
	11. Income taxes
	The income tax expense (benefit) by jurisdiction consists of the following for the years ended December 31:
		2013			2012			2011
	U.S. federal:
	Current	$	(402	)	$	1,651		$	1,971
	Deferred		983			1,189			2,261
	Total U.S. federal	$	581		$	2,840		$	4,232
	U.S. state and local:
	Current	$	248		$	327		$	1,092
	Deferred		457			(202	)		(1,260	)
	Total U.S. state and local	$	705		$	125		$	(168	)
	Income taxes differ from the amounts computed by applying the U.S. federal income tax rate to pretax income before income taxes as a result of the following for the years ended December 31:
		2013			2012			2011
	Federal statutory rate		34	%		34	%		34	%
	State and local		(5.7	)		1.1			(0.7	)
	Foreign rate differential		(3.2	)		—			—
	Stock options		(0.7	)		(2.6	)		1.9
	Non-controlling interests		15.2			(2.2	)		(2.0	)
	Valuation allowance		(119.1	)		—			—
	Transaction costs		(6.7	)		—			—
	Purchase price adjustments		6.6			—			—
	Revaluation of deferred tax assets		2.8			—			—
	Uncertain tax positions		(2.9	)		—			3.7
	Return to provision		9.3			(5.3	)		0.2
	Other		1.1			2			(0.1	)
	Income taxes		(69.3	)%		27	%		37	%
	We have a foreign subsidiary in the United Kingdom, which has generated losses since inception resulting in an $644 deferred tax asset with a corresponding valuation allowance as of December 31, 2013. We also have a majority owned foreign subsidiary in Brazil, which has generated losses since inception resulting in a $69 deferred tax assets with a corresponding valuation allowance as of December 31, 2013. Foreign loss before income taxes was $559, $61, and $45 for 2013, 2012, and 2011, respectively.
	Deferred income tax reflects the tax effects of temporary differences that gave rise to significant portions of our deferred tax assets and liabilities and consisted of the following for the years ended December 31, 2013 and December 31, 2012; respectively:
		2013			2012
	Deferred tax assets:
	Net operating loss carryforwards	$	3,508		$	1,917
	Outside basis differences for U.S. partnerships		2,842			3,289
	Stock options		3,018			2,086
	Deferred revenue		516			873
	Deferred compensation		355			340
	State taxes		34			5
	Other		404			347
	Valuation allowance		(3,963	)		(1,669	)
	Net deferred tax assets		6,714			7,188
	Deferred tax liabilities:
	Intangible assets		(6,737	)		(1,539	)
	Property and equipment		(2,154	)		(189	)
	Net deferred tax liabilities		(8,891	)		(1,728	)
	Net deferred taxes	$	(2,177	)	$	5,460
	In assessing the realizability of deferred tax assets, we consider whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. As of December 31, 2013 and 2012, we had federal net operating loss carryforwards of approximately $20,389 and $15,283, respectively, state net operating loss carryforwards of approximately $37,153 and $29,955, respectively, and foreign net operating loss carryforwards of $3,425 and $1,588, respectively. The federal net operating loss carryforwards will begin to expire in 2025, and our foreign net operating loss carryforwards have an indefinite life. Our state net operating loss carryforwards are principally related to California net operating losses and will begin to expire in 2015. Our ability to utilize certain of our net operating loss carryforwards may be limited in the event that a change in ownership, as defined in the Internal Revenue Code, occurs in the future.
	The following table sets forth the changes in the valuation allowance, for all periods presented:
		Valuation
		Allowance
	Balance, December 31, 2010	$	3,109
	Decrease credited to operations		(1,287	)
	Balance, December 31, 2011		1,822
	Additions charged to operations		51
	Decrease credited to operations		(204	)
	Balance, December 31, 2012		1,669
	Additions charged to operations		2,294
	Decrease credited to operations		—
	Balance, December 31, 2013	$	3,963
	During the year ended December 31, 2013, we recorded a $2,294 increase in our valuation allowance on our federal deferred tax assets, primarily due to changes in our expectations regarding our ability to realize these deferred tax assets. This resulted from a determination that it was more likely than not that certain federal net deferred tax assets would not be realized. We recently won some significant new contracts for the build out of residential broadband and IPTV networks for troops stationed on military bases that will now require us to make investments and incur losses in advance of experiencing any direct benefit from them including generation of revenues.
	During the year ended December 31, 2011, we recorded a $1,287 release to the valuation allowance on our state net deferred tax assets, due to changes in our expectations regarding our ability to realize these deferred tax assets. This resulted from a determination that it was more likely than not that certain state net deferred tax assets would be realized. The remaining valuation allowance primarily relates to the deferred tax assets for state net operating losses that the Company believes is not more likely than not to be realized before expiration.
	In reaching the determination of the valuation allowance, we have evaluated all significant available positive and negative evidence including, but not limited to, our three year cumulative results, trends in our business, expected future results and the character, amount and expiration periods of our net deferred tax assets. The underlying assumptions we used in forecasting future income required significant judgment and took into account our recent performance.
	During 2013, 2012 and 2011, we realized excess windfall tax benefits of approximately $55, $2,190 and $246, respectively, from stock option exercises. These benefits decreased income taxes payable and were recorded as an increase to additional paid-in capital in the accompanying consolidated balance sheets. In accordance with the reporting requirements under ASC 718, we did not include excess windfall tax benefits resulting from stock option exercises as components of our gross deferred tax assets and corresponding valuation allowance disclosures, as tax attributes related to those windfall tax benefits should not be recognized until they result in a reduction of taxes payable. The tax effected amount of gross unrealized net operating loss carryforwards excluded under ASC 718 was approximately $5,847 at December 31, 2013. When realized, those excess windfall tax benefits are credited to additional paid-in capital.
	We recognized interest and penalties related to income tax matters in income taxes which were not material during the years ended December 31, 2013, 2012, and 2011.
	We identify, evaluate and measure all uncertain tax positions taken or to be taken on tax returns and record liabilities for the amount of these positions that may not be sustained, or may only partially be sustained, upon examination by the relevant taxing authorities. Although we believe that our estimates and judgments were reasonable, actual results may differ from these estimates. Some or all of these judgments are subject to review by the taxing authorities. As of December 31, 2013 and 2012, we had $445 and $392 in uncertain tax positions, respectively, $106 of which is a reduction to deferred tax assets, which is presented net of uncertain tax positions, in the accompanying consolidated balance sheets. We accrue interest and penalties related to unrecognized tax benefits as a component of income taxes. As of December 31, 2013, we have accrued $53 for related interest, net of federal income tax benefits, and penalties recorded in income tax expense on our consolidated statements of operations. There were no significant accrued interest and penalties as of December 31, 2012.
A reconciliation of our unrecognized tax benefits, excluding interest and penalties, is as follows:
	Uncertain Tax Positions
Balance, December 31, 2012	$	392
Additions for current period tax positions		—
Balance, December 31, 2013	$	392
Our annual income taxes and the determination of the resulting deferred tax assets and liabilities involve a significant amount of judgment. Our judgments, assumptions and estimates relative to current income taxes take into account current tax laws, their interpretation of current tax laws and possible outcomes of current and future audits conducted by foreign and domestic tax authorities. We operate within federal, state and international taxing jurisdictions and are subject to audit in these jurisdictions. These audits can involve complex issues which may require an extended period of time to resolve. We are subject to taxation in the United States and in various states. Our tax years 2010 and forward are subject to examination by the IRS and our tax years 2007 and forward are subject to examination by material state jurisdictions. However, due to prior year loss carryovers, the IRS and state tax authorities may examine any tax years for which the carryovers are used to offset future taxable income. We are currently subject to examination by the IRS for our 2011 tax year. Although the ultimate outcome is unknown, we believe that any adjustments that may result from examination is not likely to have a material, adverse effect on our consolidated results of operations, financial position or cash flows.

Commitments_and_contingencies

Commitments and contingencies	12 Months Ended
	Dec. 31, 2013
Commitments and contingencies	'
Commitments and contingencies	'
	12. Commitments and contingencies
	Capital and operating leases
	We lease space in managed and operated locations, primarily airports, under exclusive long-term, non-cancellable contracts to provide Wi-Fi connectivity and cellular phone access to our DAS network. Minimum rent expense is recorded on a straight-line basis over the term of the lease. Rent expense from our leases for the years ended December 31, 2013, 2012 and 2011 was $20,234, $16,760 and $15,511, respectively.
	We lease equipment, primarily data communication equipment and database software under non-cancellable capital leases that expired in October 2011. The leases were collateralized by the equipment under the lease. Interest expense associated with the capital leases for the years ended December 31, 2013, 2012 and 2011 was $15, $11 and $8, respectively. We also lease office space under non-cancellable operating leases. Rent expense for our leases of office facilities for the years ended December 31, 2013, 2012 and 2011 was $1,227, $1,209 and $1,323, respectively. Included in rent expense for the years ended December 31, 2013, 2012 and 2011 was sublease income of $54, $52 and $32, respectively.
	Future minimum lease obligations under non-cancellable operating and capital leases at December 31, 2013 are as follows:
	Years ended December 31,	Capital			Operating
		Leases			Leases and
					Airport
					Guarantees
	2014	$	662		$	10,819
	2015		383			8,830
	2016		312			6,985
	2017		81			5,869
	2018		—			4,059
	Thereafter		—			14,477
	Minimum lease payments		1,438		$	51,039
	Less: Amounts representing interest ranging from 1.0% to 6.5%		(439	)
	Minimum lease payments	$	999
	Current portion	$	526
	Non-current portion	$	473
	Letters of credit
	In October 2013, we entered into a Letter of Credit ("Letter of Credit") Authorization agreement with Silicon Valley Bank ("SVB") for a one year term. The Letter of Credit is irrevocable and serves as a performance guarantee that will allow our customer to draw up to $1,800 if we are in default. There have been no drafts drawn under this Letter of Credit as of December 31, 2013.
	Legal proceedings
	From time to time, we may be subject to claims, suits, investigations and proceedings arising out of the normal course of business. We are not currently a party to any litigation that we believe could have a material adverse effect on our business, financial position, results of operations or cash flows.
	Indemnification
	Indemnification provisions in our third-party service provider agreements provide that we will indemnify, hold harmless, and reimburse the indemnified parties on a case-by-case basis for losses suffered or incurred by the indemnified parties in connection with any claim by any third party as a result of our website, advertising, marketing, payment processing, collection or customer service activities. The maximum potential amount of future payments we could be required to make under these indemnification provisions is undeterminable. We have never paid a claim, nor have we been sued in connection with these indemnification provisions. At December 31, 2013 and 2012, we have not accrued a liability for these guarantees, because the likelihood of incurring a payment obligation in connection with these guarantees is not probable.
	Employment contracts
	We have entered into employment contracts with six of our officers. These contracts generally provide for severance benefits, including salary continuation, if employment is terminated by us for substantial cause or by the officer for convenience. In addition, in order to assure that they would continue to provide independent leadership consistent with our best interests in the event of an actual or threatened change in control, the contract also generally provides for certain protections in the event of such a change in control. These protections include the payment of certain severance benefits, including salary continuation, upon the termination of employment following a change in control.

Stock_repurchases

Stock repurchases	12 Months Ended
	Dec. 31, 2013
Stock repurchases	'
Stock repurchases	'
	13. Stock repurchases
	On April 1, 2013, the Company approved a stock repurchase program to repurchase up to $10,000 of the Company's common stock in the open market, exclusive of any commissions, markups or expenses. The stock repurchased will be retired and will resume the status of authorized but unissued shares of common stock. During the year ended December 31, 2013, we repurchased and retired approximately 722,000 shares under this program for approximately $4,820, excluding commissions paid, at an average price per share of $6.68. As of December 31, 2013, the remaining approved amount for repurchases was approximately $5,180.

Stock_incentive_plans

Stock incentive plans	12 Months Ended
	Dec. 31, 2013
Stock incentive plans	'
Stock incentive plans	'
	14. Stock incentive plans
	In March 2011, our board of directors approved the 2011 Plan. The 2011 Plan provides for the grant of incentive and nonstatutory stock options, stock appreciation rights, restricted shares of our common stock, stock units, and performance cash awards. As of January 1st of each year, the number of shares of common stock reserved for issuance under the 2011 Plan shall automatically be increased by a number equal to the lesser of (a) 4.5% of the total number of shares of common stock then outstanding, (b) 3,000,000 shares of common stock or (c) as determined by our board of directors. As of December 31, 2013, 7,108,013 shares of common stock are reserved for issuance. As of December 31, 2013, options to purchase 5,026,486 shares of common stock and 799,289 RSUs have been granted under the 2011 Plan.
	No further awards will be made under our 2001 Plan and it will be terminated. Options outstanding under the 2001 Plan will continue to be governed by their existing terms. As of December 31, 2013, options to purchase 1,858,543 shares of common stock were outstanding under the 2001 Plan.
	The following table summarizes our stock-based compensation expense included in the consolidated statements of operations for 2013, 2012 and 2011:
		Years ended
		December 31,
		2013			2012		2011
	Network operations	$	888		$	352	$	463
	Development and technology		380			352		577
	Selling and marketing		1,045			571		650
	General and administrative		2,193			1,460		1,733
	Total stock-based compensation expense	$	4,506		$	2,735	$	3,423
	Stock option awards
	We grant stock option awards to both employees and non-employee directors. The grant date for these awards is the same as the measurement date. The stock option awards generally vest over a four year service period with 25% vesting when the individual completes 12 months of continuous service and the remaining 75% vesting monthly thereafter. These awards are valued as of the measurement date and the stock-based compensation expense, net of estimated and actual forfeitures, is recognized on a straight-line basis over the requisite service period. A summary of the activity for stock option awards for 2013, 2012 and 2011 is presented below:
		Number			Weighted		Weighted-		Aggregate
		of			Average		Average		Intrinsic
		Options			Exercise		Remaining		Value
		(000's)			Price		Contract
							Life
							(years)
	Outstanding at December 31, 2010		5,288		$	1.25		6.3	$	38,279
	Granted		2,381		$	13.02
	Exercised		(1,015	)	$	1.01
	Canceled/forfeited		(53	)	$	6.58
	Outstanding at December 31, 2011		6,601		$	5.5		7	$	30,996
	Granted		1,391		$	8.29
	Exercised		(1,899	)	$	1.36
	Canceled/forfeited		(1,048	)	$	11.85
	Outstanding at December 31, 2012		5,045		$	6.5		6.4	$	14,742
	Granted		1,351		$	6.73
	Exercised		(461	)	$	1.33
	Canceled/forfeited		(980	)	$	10.2
	Outstanding at December 31, 2013		4,955		$	6.31		6.6	$	9,535
	Vested, exercisable and expected to vest at December 31, 2013		4,788		$	6.25		6.5	$	9,520
	Exercisable at December 31, 2013		2,739		$	4.52		4.8	$	9,329
	The aggregate intrinsic value in the table above represents the difference between the estimated fair value of our common stock at December 31, 2013 and the option exercise price, multiplied by the number of in-the-money options at December 31, 2013. The intrinsic value changes are based on the estimated fair value of our common stock.
	Stock options to purchase 461,000, 1,899,000 and 1,015,000 shares of our common stock were exercised during the years ended December 31, 2013, 2012 and 2011 for cash proceeds of $614, $2,573 and $1,028, respectively. The total intrinsic value of stock options exercised for the years ended December 31, 2013, 2012 and 2011 was $2,662, $14,901 and $9,754, respectively. We realized $55, $2,190 and $246 of tax benefits for the deductions from stock option exercises during 2013, 2012 and 2011, respectively.
	The weighted average grant date fair value of options granted for the years ended December 31, 2013, 2012 and 2011 was $6.60, $8.10 and $6.68, respectively.
	At December 31, 2013, the total remaining stock-based compensation expense for unvested stock option awards is $7,345, which is expected to be recognized over a weighted average period of 2.95 years.
	Restricted stock unit awards
	During the year ended December 31, 2013, we issued RSUs to executive and non-executive personnel and members of our board of directors. The executive and non-executive RSUs generally vest over a two year period with 50% of the RSUs vesting when the individual completes 12 months of continuous service and the remaining 50% vesting on a quarterly basis thereafter. The board of directors RSUs generally vests over a one year period for existing members and 25% per year over a four year period for new members. A summary of the RSU activity in 2013 is as follows:
		Number			Weighted
		of			Average
		Shares			Grant Date
		(000's)			Fair Value
	Nonvested at December 31, 2012		—		$	—
	Granted		799		$	6.21
	Vested		(6	)	$	6.39
	Canceled/forfeited		(40	)	$	6.05
	Nonvested at December 31, 2013		753		$	6.22
	The RSUs that vested during the year ended December 31, 2013 resulted from the accelerated vesting for an employee that retired during 2013. At December 31, 2013, the total remaining stock-based compensation expense for unvested RSU awards is $2,750, which is expected to be recognized over a weighted average period of 1.4 years.

Employee_benefit_plan

Employee benefit plan	12 Months Ended
	Dec. 31, 2013
Employee benefit plan	'
Employee benefit plan	'
	15. Employee benefit plan
	We have a defined contribution savings plan in accordance with Section 401(k) of the Internal Revenue Code. This plan covers substantially all employees who meet the IRS requirements and allows participants to defer a portion of their annual compensation on a pre-tax basis. Company contributions to the plan may be made at the discretion of the board of directors. Employer contributions of $330, $347 and $285 were made to the plan by us in 2013, 2012 and 2011, respectively.

Net_loss_income_per_share_attr

Net (loss) income per share attributable to common stockholders	12 Months Ended
	Dec. 31, 2013
Net (loss) income per share attributable to common stockholders	'
Net (loss) income per share attributable to common stockholders	'
	16. Net (loss) income per share attributable to common stockholders
	The following table sets forth the computation of basic and diluted net (loss) income per share attributable to common stockholders:
		Years ended December 31,
		2013			2012		2011
		(in thousands)
	Numerator:
	Net (loss) income attributable to common stockholders, basic and diluted	$	(3,793	)	$	7,295	$	4,662
	Denominator:
	Weighted average common stock, basic		35,578			34,774		24,014
	Effect of dilutive stock options		—			2,543		3,457
	Effect of dilutive common stock warrants		—			—		10
	Weighted average common stock, diluted		35,578			37,317		27,481
	Net (loss) income per share attributable to common stockholders:
	Basic	$	(0.11	)	$	0.21	$	0.19
	Diluted	$	(0.11	)	$	0.2	$	0.17
	For the year ended December 31, 2013, we excluded all stock options and RSUs from the computation of diluted net loss per share due to the net loss for the period. The following outstanding securities were not included in the computation of diluted net income per share as the inclusion would have been anti-dilutive for the years ended December 31, 2012 and 2011:
		Years ended
		December 31,
		2012			2011
		(in thousands)
	Convertible preferred stock		—			7,699
	Stock options		2,518			2,172
	Preferred stock warrants		—			26
	Total		2,518			9,897

Quarterly_financial_data_unaud

Quarterly financial data (unaudited)	12 Months Ended
	Dec. 31, 2013
Quarterly financial data (unaudited)	'
Quarterly financial data (unaudited)	'
	17. Quarterly financial data (unaudited)
	Summarized unaudited quarterly financial data are as follows:
		2013
		March 31			June 30			September 30		December 31
	Revenue	$	23,134		$	26,239		$	28,607	$	28,766
	(Loss) income from operations		(1,502	)	$	(424	)	$	784	$	(752	)
	Net (loss) income attributable to common stockholders		(1,121	)	$	(399	)	$	354	$	(2,627	)
	Basic (loss) earnings per share	$	(0.03	)	$	(0.01	)	$	0.01	$	(0.07	)
	Diluted (loss) earnings per share	$	(0.03	)	$	(0.01	)	$	0.01	$	(0.07	)
		2012
		March 31			June 30			September 30		December 31
	Revenue	$	24,187		$	24,302		$	26,017	$	28,000
	Income from operations	$	2,407		$	2,236		$	4,129	$	2,074
	Net income attributable to common stockholders	$	1,657		$	1,461		$	2,777	$	1,400
	Basic earnings per share	$	0.05		$	0.04		$	0.08	$	0.04
	Diluted earnings per share	$	0.05		$	0.04		$	0.07	$	0.04
		2011
		March 31			June 30			September 30		December 31
	Revenue	$	21,028		$	22,943		$	24,688	$	25,899
	Income from operations	$	1,729		$	2,427		$	2,981	$	4,040
	Net (loss) income attributable to common stockholders	$	(148	)	$	1,293		$	1,662	$	1,855
	Basic (loss) earnings per share	$	(0.03	)	$	0.06		$	0.05	$	0.06
	Diluted (loss) earnings per share	$	(0.03	)	$	0.05		$	0.05	$	0.05
	Earnings (loss) per share are computed separately for each quarter and the full year using the respective weighted average shares. Therefore, the sum of the quarterly earnings (loss) per share amounts may not equal the annual amounts reported.

Subsequent_events

Subsequent events	12 Months Ended
	Dec. 31, 2013
Subsequent events	'
Subsequent events	'
	18. Subsequent events
	In March 2014, we granted 203,000 options for common stock with an exercise price of $6.10 per share and issued 1,340,200 RSUs to executive and non-executive personnel.

Summary_of_significant_account1

Summary of significant accounting policies (Policies)	12 Months Ended
	Dec. 31, 2013
Summary of significant accounting policies	'
Basis of presentation and consolidation	'
	Basis of presentation and consolidation
	Our consolidated financial statements for the years ended December 31, 2013, 2012 and 2011 have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP").
	The accompanying consolidated financial statements include our accounts and our majority owned subsidiaries. We consolidate our 70% ownership of Concourse Communications Detroit, LLC, our 70% ownership of Chicago Concourse Development Group, LLC and our 75% ownership of Boingo Holding Participacoes Ltda. in accordance with Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") 810, Consolidation. Other parties' interests in consolidated entities are reported as non-controlling interests. All intercompany balances and transactions have been eliminated in consolidation.
	During the year ended December 31, 2013, the Company recorded certain out-of-period adjustments that decreased net loss attributable to common stockholders by $217. The impact of these out-of-period adjustments is not considered material, individually and in the aggregate, to any of the current or prior annual periods.
	The consolidated balance sheet as of December 31, 2012 has been revised to properly classify $2,066 of unbilled receivables from other non-current assets to accounts receivable, net. The revision has also been reflected in Note 5 to the consolidated financial statements. The impact of this revision is not material to the prior year consolidated balance sheet.
Use of estimates	'
	Use of estimates
	The preparation of accompanying consolidated financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the dates of the accompanying consolidated financial statements, and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. Assets and liabilities which are subject to significant judgment and the use of estimates include the allowance for doubtful accounts, recoverability of goodwill and long-lived assets, valuation allowances with respect to deferred tax assets, uncertain tax positions, useful lives associated with property and equipment, valuation and useful lives of intangible assets, valuation of contingent consideration, and the valuation and assumptions underlying stock-based compensation and other equity instruments. On an ongoing basis, we evaluate our estimates compared to historical experience and trends, which form the basis for making judgments about the carrying value of assets and liabilities. In addition, prior to our IPO, we regularly engaged the assistance of valuation specialists in determining fair value measurements in connection with stock-based compensation and other equity instruments.
Concentrations of credit risk	'
	Concentrations of credit risk
	Financial instruments that potentially subject us to significant concentrations of credit risk consist primarily of cash and cash equivalents, restricted cash, marketable securities and accounts receivable. We maintain our cash and cash equivalents, restricted cash and marketable securities with institutions with high credit ratings. We extend credit based upon the evaluation of the customer's financial condition and generally collateral is not required. We maintain an allowance for doubtful accounts based upon expected collectability of accounts receivable. We primarily estimate our allowance for doubtful accounts based on a specific review of significant outstanding accounts receivable. For the year ended December 31, 2013 two groups of affiliated entities each accounted for 14% of total revenue. For the year ended December 31, 2012, those same two groups of affiliated entities accounted for 17% and 15% of total revenue, respectively. For the year ended December 31, 2011, one group of affiliated entities accounted for 18% of total revenue. At December 31, 2013, one group of affiliated entities accounted for 12% of the total accounts receivable. At December 31, 2012, three groups of affiliated entities accounted for 26%, 16% and 10% of the total accounts receivable, respectively.
Cash and cash equivalents	'
	Cash and cash equivalents
	Cash and cash equivalents include highly liquid investments that are readily convertible into known amounts of cash with original maturities of three months or less when acquired. At December 31, 2013, cash equivalents consisted of money market funds. At December 31, 2012, cash equivalents consisted of money market funds and marketable securities with original maturities of three months or less.
Marketable securities	'
	Marketable securities
	Our marketable securities consist of available-for-sale securities with original maturities exceeding three months. In accordance with FASB ASC 320, Investments—Debt and Equity Securities, we have classified securities, which have readily determinable fair values and are highly liquid, as short-term because such securities are expected to be realized within a one- year period. At December 31, 2013 and 2012, we had $32,962 and $41,558, respectively, in short-term marketable securities and no long-term marketable securities.
	Marketable securities are reported at fair value with the related unrealized gains and losses reported as other comprehensive income (loss) until realized or until a determination is made that an other-than-temporary decline in market value has occurred. No significant unrealized gains and losses have been reported during the years presented. Factors considered by us in assessing whether an other-than-temporary impairment has occurred include the nature of the investment, whether the decline in fair value is attributable to specific adverse conditions affecting the investment, the financial condition of the investee, the severity and the duration of the impairment and whether we have the ability to hold the investment to maturity. When it is determined that an other-than-temporary impairment has occurred, the investment is written down to its market value at the end of the period in which it is determined that an other-than-temporary decline has occurred. The cost of marketable securities sold is based upon the specific identification method. Any realized gains or losses on the sale of investments are reflected as a component of interest and other income (expense), net.
	For the years ended December 31, 2013, 2012 and 2011, we had no significant realized or unrealized gains or losses from investments in marketable securities classified as available-for-sale.
Restricted cash	'
	Restricted cash
	Restricted cash consists of letters of credit with our landlords, municipalities or venues for which we have operating agreements. Letters of credit are supported by cash deposits made by us and invested into bank certificates of deposit. At December 31, 2013 and 2012, we had $545 and $30 classified as short-term restricted cash, respectively. At December 31, 2013 and 2012, we had no restricted cash classified as long-term.
Fair value of financial instruments	'
	Fair value of financial instruments
	Fair value is defined as the price that would be received from selling an asset, or paid to transfer a liability, in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at fair value, we consider the principal or most advantageous market in which it would transact, and we consider assumptions that market participants would use when pricing the asset or liability.
	The accounting guidance for fair value measurement also requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard establishes a fair value hierarchy based on the level of independent, objective evidence surrounding the inputs used to measure fair value. A financial instrument's categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The fair value hierarchy is as follows:
	•
	Level 1—Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities.
	•
	Level 2—Quoted prices for identical assets and liabilities in markets that are not active, quoted prices for similar assets and liabilities in active markets or financial instruments for which significant inputs are observable, either directly or indirectly.
	•
	Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
	The carrying amount reflected in the accompanying consolidated balance sheets for cash and cash equivalents, restricted cash, marketable securities, accounts receivable, prepaid expenses and other current assets, accounts payable, accrued expenses and other liabilities approximates fair value due to the short-term nature of these financial instruments.
Business combinations	'
	Business combinations
	The results of businesses acquired in a business combination are included in the Company's consolidated financial statements from the date of the acquisition. Purchase accounting results in assets and liabilities of an acquired business being recorded at their estimated fair values on the acquisition date. Any excess consideration over the fair value of assets acquired and liabilities assumed is recognized as goodwill.
	The Company performs valuations of assets acquired and liabilities assumed from a business acquisition and will allocate the purchase price to its respective net tangible and intangible assets. Determining the fair value of assets acquired and liabilities assumed requires management to use significant judgment and estimates including the selection of valuation methodologies, estimates of future revenues and cash flows, discount rates, royalty rates and selection of comparable companies. The Company engages the assistance of valuation specialists in concluding on fair value measurements in connection with fair values of assets and liabilities assumed in a business combination.
	Transaction costs associated with business combinations are expensed as incurred, and are included in general and administrative expenses in the consolidated statements of operations. Transaction costs were $354 and $50 for the years ended December 31, 2013 and 2012, respectively. There were no transaction costs for the year ended December 31, 2011.
Property and equipment	'
	Property and equipment
	Property and equipment are generally stated at historical cost, less accumulated depreciation and amortization. The Company's cost basis includes property and equipment acquired in business combinations that were initially recorded at fair value as of the date of acquisition. Maintenance and repairs are charged to expense as incurred and the cost of additions and betterments that increase the useful lives of the assets are capitalized. Depreciation and amortization is computed over the estimated useful lives of the related asset type using the straight-line method.
	The estimated useful lives for property and equipment are as follows:
	Computer equipment	2 to 5 years
	Software	2 to 5 years
	Office equipment	3 to 5 years
	Leasehold improvements	The shorter of the estimated useful life or the remaining term of the agreements, generally ranging from 2 to 15 years
	Leasehold improvements are principally comprised of network equipment located at various managed and operated locations, primarily airports, under exclusive, long-term, non-cancelable contracts to provide wireless communication network access.
Equipment and software under capital lease	'
	Equipment and software under capital lease
	We lease certain data communications equipment, other equipment and software under capital lease agreements. The assets and liabilities under capital lease are recorded at the lesser of the present value of aggregate future minimum lease payments, including estimated bargain purchase options, or the fair value of the asset under lease. Assets under capital lease are depreciated using the straight-line method over the shorter of the estimated useful lives of the assets or the term of the lease agreements.
Software development costs	'
	Software development costs
	We capitalize costs associated with software developed or obtained for internal use when the preliminary project stage is completed and it is determined that the software will provide significantly enhanced capabilities and modifications. These capitalized costs are included in property and equipment and include external direct cost of services procured in developing or obtaining internal-use software and personnel and related expenses for employees who are directly associated with, and who devote time to internal-use software projects. Capitalization of these costs ceases once the project is substantially complete and the software is ready for its intended use. Once the software is ready for its intended use, the costs are amortized over the useful life of the software. Post-configuration training and maintenance costs are expensed as incurred.
Long-lived assets	'
	Long-lived assets
	Intangible assets consist of acquired venue contracts, technology, advertiser relationships, non-compete agreements and patents and trademarks. We record intangible assets at fair value as of the date of acquisition and amortize these finite-lived assets over the shorter of the contractual life or the estimated useful life on a straight-line basis. We estimate the useful lives of acquired intangible assets based on factors that include the planned use of each acquired intangible asset, the expected pattern of future cash flows to be derived from each acquired intangible asset and contractual periods specified in the related agreements. As such, we account for each of the venue contracts individually. We include amortization of acquired intangibles in amortization of intangible assets in the accompanying consolidated statements of operations.
	We perform an impairment review of long-lived assets held and used whenever events or changes in circumstances indicate that the carrying value may not be recoverable. Factors we consider important that could trigger an impairment review include, but are not limited to: significant under-performance relative to projected future operating results, significant changes in the manner of our use of the acquired assets or our overall business and product strategies and significant industry or economic trends. When we determine that the carrying value of a long-lived asset may not be recoverable based upon the existence of one or more of these indicators, we determine the recoverability by comparing the carrying amount of the asset to net future undiscounted cash flows that the asset is expected to generate or other indices of fair value. We would then recognize an impairment charge equal to the amount by which the carrying amount exceeds the fair market value of the asset.
Goodwill	'
	Goodwill
	Goodwill represents the excess of the purchase price over the fair value of net assets acquired in connection with the acquisition of Concourse Communication Group, LLC in June 2006, Cloud 9 Wireless, Inc. in August 2012, Endeka Group, Inc. in February 2013, and Electronic Media Systems, Inc. and Advanced Wireless Group, LLC in October 2013.
	We test goodwill for impairment in accordance with guidance provided by FASB ASC 350, Intangibles—Goodwill and Other ("ASC 350"). Goodwill is tested for impairment at least annually at the reporting unit level or whenever events or changes in circumstances indicate that goodwill might be impaired. Events or changes in circumstances which could trigger an impairment review include a significant adverse change in legal factors or in the business climate, an adverse action or assessment by a regulator, unanticipated competition, a loss of key personnel, significant changes in the manner of our use of the acquired assets or the strategy for our overall business, significant negative industry or economic trends, or significant underperformance relative to expected historical or projected future results of operations. We perform our impairment test annually as of December 31st.
	Entities have the option to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test described in FASB ASC 350. If, after assessing qualitative factors, an entity determines it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then performing the two-step impairment test is unnecessary. If deemed necessary, a two-step test is used to identify the potential impairment and to measure the amount of goodwill impairment, if any. The first step is to compare the fair value of the reporting unit with its carrying amount, including goodwill. If the fair value of the reporting unit exceeds its carrying amount, goodwill is considered not impaired; otherwise, there is an indication that goodwill may be impaired and the amount of the loss, if any, is measured by performing step two. Under step two, the impairment loss, if any, is measured by comparing the implied fair value of the reporting unit goodwill with the carrying amount of goodwill.
	Currently, we have one reporting unit, one operating segment and one reportable segment. At December 31, 2013 and 2012, all of the goodwill was attributed to our reporting unit. We tested our goodwill for impairment using a market based approach and no impairment was identified as the fair value of our reporting unit was substantially in excess of its carrying amount. To date, we have not recorded any goodwill impairment charges.
Revenue recognition	'
	Revenue recognition
	We generate revenue from several sources including: (i) platform service arrangements with wholesale customers that provide software licensing, network access, and professional services fees, (ii) wholesale customers that are telecom operators under long-term contracts for access to our DAS at our managed and operated locations, (iii) retail customers under subscription plans for month-to-month network access that automatically renew, and retail single-use access from sales of hourly, daily or other single-use access plans, and (iv) display advertisements and sponsorships on our walled garden sign-in pages. Software licensed by our wholesale platform services customers can only be used during the term of the service arrangements and has no utility to them upon termination of the service arrangement.
	We recognize revenue when an arrangement exists, services have been rendered, fees are fixed or determinable, no significant obligations remain related to the earned fees and collection of the related receivable is reasonably assured.
	Services provided to wholesale partners under platform service arrangements generally contain several elements including: (i) a term license to use our software to access our Wi-Fi network, (ii) access fees for network usage, and (iii) professional services for software integration and customization and to maintain the Wi-Fi service. The term license, monthly minimum network access fees and professional services are billed on a monthly basis based upon predetermined fixed rates. Once the term license for integration and customization are delivered, the fees from the arrangement are recognized ratably over the remaining term of the platform service arrangement. The initial term of platform service license agreements is generally between one to five years and the agreements generally contain renewal clauses. Revenue for network access fees in excess of the monthly minimum amounts is recognized when earned. All elements within existing platform service arrangements are generally delivered and earned concurrently throughout the term of the respective service arrangement.
	Revenue generated from access to our DAS networks consists of build-out fees and recurring access fees under certain long-term contracts with telecom operators. Build-out fees paid upfront are generally deferred and recognized ratably over the term of the estimated customer relationship period, once the build-out is complete. Minimum monthly access fees for usage of the DAS networks are non-cancellable and generally escalate on an annual basis. These minimum monthly access fees are recognized ratably over the term of the telecom operator agreement. The initial term of our contracts with telecom operators and wholesale partners generally range from three to fifteen years and the agreements generally contain renewal clauses. Revenue from network access fees in excess of the monthly minimums is recognized when earned.
	In instances where the minimum monthly network access fees escalate over the term of the wholesale service arrangement, an unbilled receivable is recognized when performance is within our control and when we have reasonable assurance that the unbilled receivable balance will be collected.
	We adopted the provisions of Accounting Standards Update ("ASU") 2009-13, Revenue Recognition (Topic 605)—Multiple-Deliverable Revenue Arrangements ("ASU 2009-13"), on a prospective basis on January 1, 2011. For multiple-deliverable arrangements entered into prior to January 1, 2011 that are accounted for under ASC 605-25, Revenue Recognition—Multiple-Deliverable Revenue Arrangements, we defer recognition of revenue for the full arrangement and recognize all revenue ratably over the wholesale service period for platform service arrangements and the term of the estimated customer relationship period for DAS arrangements, as we do not have evidence of fair value for the undelivered elements in the arrangement. For multiple-deliverable arrangements entered into or materially modified after January 1, 2011 that are accounted for under ASC 605-25, we evaluate whether or not separate units of accounting exist and then allocate the arrangement consideration to all units of accounting based on the relative selling price method using estimated selling prices if vendor specific objective evidence and third party evidence is not available. We recognize the revenue associated with the separate units of accounting upon completion of such services or ratably over the wholesale service period for platform service arrangements and the term of the estimated customer relationship period for DAS arrangements.
	Subscription fees from retail customers are paid monthly in advance and revenue is deferred for the portions of monthly recurring subscription fees collected in advance. We do not have a stated or published refund policy for our Wi-Fi service, although our customer service representatives will provide a refund on a case-by-case basis. These amounts are not significant and are recorded as contra-revenue in the period the refunds are made. Subscription fee revenue is recognized ratably over the subscription period. Revenue generated from retail single-use access is recognized when earned.
	Advertising revenue is generated from advertisements on our managed and operated or partner networks. In determining whether an arrangement exists, we ensure that a binding arrangement is in place, such as a standard insertion order or a fully executed customer-specific agreement. Obligations pursuant to our advertising revenue arrangements typically include a minimum number of units or the satisfaction of certain performance criteria. Advertising and other revenue is recognized when the services are performed.
Network access	'
	Network access
	Network access costs consist primarily of revenue share payments to venue owners where our managed and operated hotspots are located, usage-based fees to our roaming network partners for access to their networks, depreciation of equipment related to network build-out projects in our managed and operated locations, and bandwidth and other Internet connectivity expenses in our managed and operated locations.
Advertising, marketing and promotion costs	'
	Advertising, marketing and promotion costs
	Advertising production costs are expensed the first time the advertisement is run. No advertising production costs were capitalized for the years ended December 31, 2013, 2012 and 2011. All other costs of advertising, marketing and promotion are expensed as incurred. Advertising expenses charged to operations totaled $2,302, $2,374 and $1,393 for the years ended December 31, 2013, 2012 and 2011, respectively.
Stock-based compensation	'
	Stock-based compensation
	Our stock-based compensation consists of stock options and restricted stock units ("RSU") granted to employees and non-employees.
	We recognize stock-based compensation expense in accordance with guidance provided by FASB ASC 718, Compensation—Stock Compensation ("ASC 718"). We measure employee stock-based compensation cost at grant date, based on the estimated fair value of the award and recognize the cost on a straight-line basis, net of estimated forfeitures, over the employee requisite service period. We estimate the fair value of stock options using a Black-Scholes option pricing model. The model requires input of assumptions regarding expected term, expected volatility, dividend yield, and a risk-free interest rate. The weighted average assumptions that were used to calculate the grant date fair value of our employee stock option grants for the following periods are as follows:
		December 31,
		2013			2012			2011
	Expected term (years)		6.25			5.9			6.4
	Expected volatility		49.31	%		48.9	%		49.8	%
	Risk-free interest rate		1.34	%		0.9	%		2.4	%
	Dividend yield		0	%		0	%		0	%
	The expected term of employee stock options represents the weighted-average period that the stock options are expected to remain outstanding. In estimating the expected term for options granted to employees, we applied the simplified method from the Security Exchange Commission ("SEC") Staff Accounting Bulletin ("SAB") Topic 14, Share-Based Payment ("SAB Topic 14"), where options are granted at-the-money. Where options were not granted at-the-money, the expected term of employee stock options represents the weighted-average period that the stock options are expected to remain outstanding and is calculated based upon actual historical exercise and post-vesting cancellations, adjusted for expected future exercise behavior.
	We determine the fair value of common stock underlying the stock option awards by reference to third party sales of our common stock. Prior to our IPO, the fair value of common stock underlying the stock option awards was determined with the assistance of a third-party valuation specialist.
	We determined the expected volatility assumption using the frequency of daily historical prices of comparable public companies' common stock for a period equal to the expected term of the options in accordance with guidance in ASC 718 and SAB Topic 14. We will continue to monitor peer companies and other relevant factors, including our volatility after there is enough history, used to measure expected volatility for future stock option grants.
	The risk-free interest rate assumption is based upon observed interest rates on the United States government securities appropriate for the expected term of our employee stock options.
	The dividend yield assumption is based on our history and expectation of dividend payouts for which no cash dividends have been declared or paid on our common stock, and for which none are anticipated in the foreseeable future.
	As stock-based compensation expense recognized in our accompanying consolidated statements of operations is based on awards ultimately expected to vest, the amount has been reduced for estimated forfeitures. ASC 718 requires forfeitures to be estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. Forfeitures were estimated based on our historical experience and future expectations.
	Compensation expense for non-employee stock-based awards is recognized in accordance with ASC 718 and FASB ASC 505, Equity. Stock option awards issued to non-employees are accounted for at fair value using the Black-Scholes option pricing model. Management believes that the fair value of the stock options is more reliably measured than the fair value of the services received. We record compensation expense based on the then-current fair value of the stock options at each financial reporting date. Compensation recorded during the service period is adjusted in subsequent periods for changes in the stock options' fair value until the earlier of the date at which the non-employee's performance is complete or a performance commitment is reached, which is generally when the stock award vests. There was $30, $372 and $515 of stock-based compensation expense recognized for non-employee stock-based awards for the years ended December 31, 2013, 2012 and 2011, respectively.
Income taxes	'
	Income taxes
	We account for income taxes in accordance with FASB ASC 740, Accounting for Income Taxes ("ASC 740"), which requires the recognition of deferred tax assets and liabilities for the future consequences of events that have been recognized in our accompanying consolidated financial statements or tax returns. The measurement of the deferred items is based on enacted tax laws. In the event the future consequences of differences between financial reporting bases and the tax bases of our assets and liabilities result in a deferred tax asset, ASC 740 requires an evaluation of the probability of being able to realize the future benefits indicated by such asset. A valuation allowance related to a deferred tax asset is recorded when it is more likely than not that some portion or the entire deferred tax asset will not be realized. As part of the process of preparing our accompanying consolidated financial statements, we are required to estimate our income taxes in each of the jurisdictions in which we operate. We also assess temporary differences resulting from differing treatment of items, such as deferred revenue, for tax and accounting differences. We record a valuation allowance to reduce the deferred tax assets to the amount of future tax benefit that is more likely than not to be realized.
	ASC 740 prescribes a recognition threshold and measurement methodology to recognize and measure an income tax position taken, or expected to be taken, in a tax return. The evaluation of a tax position is based on a two-step approach. The first step requires an entity to evaluate whether the tax position would "more likely than not" be sustained upon examination by the appropriate taxing authority. The second step requires the tax position be measured at the largest amount of tax benefit that is greater than 50% likely of being realized upon ultimate settlement. In addition, previously recognized benefits from tax positions that no longer meet the new criteria would no longer be recognized. Changes in recognition or measurement are reflected in the period in which the change occurs.
Non-controlling interests	'
	Non-controlling interests
	Non-controlling interests are comprised of minority holdings in Concourse Communications Detroit, LLC ("CCG Detroit"), Chicago Concourse Development Group, LLC ("CCDG") and Boingo Holding Participacoes Ltda ("BHPL").
	Under the terms of the limited liability company ("LLC") agreement for CCG Detroit ("Detroit Operating Agreement") profits and losses are allocated to the controlling and non-controlling owners based on specified terms in the Detroit Operating Agreement which reflect the relative risk and reward of each owner. The profit and loss allocation in the Detroit Operating Agreement specifies that the non-controlling owners' allocated profits are limited to the fixed distribution amounts and losses are limited to the non-controlling owners capital account balance with losses in excess of their capital account being fully allocated to the controlling common unit holder. There is no specified term in the Detroit Operating Agreement, but the term of the annual fixed distribution obligation to the non-controlling owner is the same as the term of the venue agreement between CCG Detroit and Detroit Metropolitan Wayne County Airport—which has a seven year initial term with options to extend for an additional four years. We allocate profits and losses in CCG Detroit based on the attribution in the Detroit Operating Agreement. CCG Detroit has generated losses which reduced the non-controlling owners capital account to zero in 2009 resulting in an allocation to the controlling interest holder all operating losses and deficits created by the annual fixed distributions to the non-controlling interest holder. The fixed distributions were terminated during September 2013 concurrent with the termination of CCG Detroit's agreement with Detroit Metropolitan Wayne County Airport. For the years ended December 31, 2013, 2012 and 2011, we made distributions of $48, $121 and $85, respectively, to non-controlling interest holders of CCG Detroit.
	Under the terms of the LLC agreement for CCDG, we are required to distribute annually to the CCDG non-controlling interest holders 30% of allocated net profits less capital expenditures of the preceding year. For the years ended December 31, 2013, 2012 and 2011, we made distributions of $560, $557 and $462, respectively, to non-controlling interest holders of CCDG.
	BHPL was formed at the end of 2012. Under the terms of the LLC agreement for BHPL, we attributed profits and losses to the non-controlling interest in BHPL in proportion to their holdings. For the year ended December 31, 2013, we made no distributions to the non-controlling interest holder of BHPL.
Convertible preferred stock	'
	Convertible preferred stock
	The convertible preferred stock contained puttable redemption features and deemed liquidation preferences upon a change-in-control, which were considered outside of the control the Company. Accretion of related issuance costs and dividends were recorded as a charge against retained earnings, or in the absence of retained earnings by charges against additional paid-in capital until fully depleted, then against the accumulated deficit. We accrete issuance costs and dividends to the earliest redemption date. For the year ended December 31, 2011, we accreted our convertible preferred stock through to their conversion date into common stock on May 3, 2011 in connection with our IPO. At December 31, 2013 and 2012, we had no preferred stock issued or outstanding.
Warrants exercisable into convertible preferred stock	'
	Warrants exercisable into convertible preferred stock
	We account for preferred stock warrants as liabilities when the underlying preferred stock contains either puttable or mandatorily redeemable features. We issued warrants which were exercisable into the Series B convertible preferred stock in connection with capital lease arrangements. We determined that the preferred stock warrants contained puttable features as a result of the redemption provisions and deemed liquidation preferences upon a change-in-control. Accordingly, the warrants were recorded as a non-current liability and were carried at their fair value at date of issuance with decreases or increases in fair value at each reporting date recorded as other income or expense through to the final measurement date upon the exercise of the warrants. The warrants were exercisable either through cash payment of the exercise price or through net-share settlement at the option of the holder. Our preferred stock warrants outstanding of 25,196 were exercised and converted under the net-share settlement provisions into 20,172 shares of our common stock on May 3, 2011, in connection with our IPO.
Net (loss) income per share attributable to common stockholders	'
	Net (loss) income per share attributable to common stockholders
	Basic net (loss) income per share attributable to common stockholders is calculated by dividing (loss) income attributable to common stockholders by the weighted average number of shares of common stock outstanding during the period. Diluted net income per share attributable to common stockholders adjusts the basic weighted average number of shares of common stock outstanding for the potential dilution that could occur if stock options, RSUs, common stock warrants, preferred stock warrants and the convertible preferred stock were exercised or converted into common stock. Our convertible preferred stockholders were entitled to receive dividends and were not contractually obligated to share in our net income with common stockholders. The common stockholders are not entitled to receive any dividends.
Segment and geographic information	'
	Segment and geographic information
	We operate as one reportable segment; a service provider of mobile Internet solutions across our managed and operated network and aggregated network for mobile devices such as laptops, smartphones, tablet computers and other wireless-enabled consumer devices. This single segment is consistent with the internal organization structure and the manner in which operations are reviewed and managed by our Chief Executive Officer, the chief operating decision maker.
	Revenue is predominantly generated and all significant long-lived tangible assets are held in the United States of America. We do not disclose sales by geographic area because to do so would be impracticable. The following is a summary of our revenue by primary revenue source:
		Year Ended December 31,
		2013			2012			2011
	Revenue:
	Wholesale	$	49,942		$	49,495		$	43,707
	Retail subscription		34,325			32,716			29,033
	Retail single-use		10,129			13,429			16,054
	Advertising and other		12,350			6,866			5,764
	Total revenue	$	106,746		$	102,506		$	94,558
Reclassifications	'
	Reclassifications
	Certain 2012 and 2011 amounts have been reclassified to conform to the current year presentation.
Recent accounting pronouncements	'
	Recent accounting pronouncements
	In July 2013, the FASB issued ASU 2013-11, Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists ("ASU 2013-11"). This ASU requires the netting of unrecognized tax benefits (UTBs) against a deferred tax asset for a loss or other carryforward that would apply in the settlement of the uncertain tax positions. The UTBs will be netted against all available same-jurisdiction loss or other tax carryforwards that would be utilized, rather than only against carryforwards that are created by the UTBs. ASU 2013-11 will require prospective application with optional retrospective application, and will be effective for reporting periods beginning after December 15, 2013. Early adoption is permitted. We have effectively adopted the provisions of this requirement as of the date of issuance of ASU 2013-11 as we have historically presented our UTBs as a reduction of our deferred tax assets for a loss or other carryforward rather than as a liability when the uncertain tax position would reduce the loss or other carryforward under the tax law.
	In February 2013, the FASB issued ASU 2013-02, Comprehensive Income—Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income ("ASU 2013-02"). This ASU requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income ("AOCI") by component. In addition, an entity is required to present, either on the face of the statement where net income (loss) is presented or in the notes, significant amounts reclassified out of AOCI by the respective line items of net income (loss) but only if the amount reclassified is required under GAAP to be reclassified to net income (loss) in its entirety in the same reporting period. For other amounts that are not required under GAAP to be reclassified in their entirety to net income (loss), an entity is required to cross-reference to other disclosures required under GAAP that provide additional detail about those amounts. ASU 2013-02 was effective prospectively for reporting periods beginning after December 15, 2012. We adopted this standard effective January 1, 2013. The adoption of this standard did not have any impact on our consolidated financial statements.

Summary_of_significant_account2

Summary of significant accounting policies (Tables)	12 Months Ended
	Dec. 31, 2013
Summary of significant accounting policies	'
Schedule of estimated useful lives for property and equipment	'
	Computer equipment	2 to 5 years
	Software	2 to 5 years
	Office equipment	3 to 5 years
	Leasehold improvements	The shorter of the estimated useful life or the remaining term of the agreements, generally ranging from 2 to 15 years
Schedule of weighted average assumptions used to calculate the grant date fair values of employee stock option grants	'
		December 31,
		2013			2012			2011
	Expected term (years)		6.25			5.9			6.4
	Expected volatility		49.31	%		48.9	%		49.8	%
	Risk-free interest rate		1.34	%		0.9	%		2.4	%
	Dividend yield		0	%		0	%		0	%
Summary of the entity's revenue by primary revenue source	'
		Year Ended December 31,
		2013			2012			2011
	Revenue:
	Wholesale	$	49,942		$	49,495		$	43,707
	Retail subscription		34,325			32,716			29,033
	Retail single-use		10,129			13,429			16,054
	Advertising and other		12,350			6,866			5,764
	Total revenue	$	106,746		$	102,506		$	94,558

Acquisitions_Tables

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2013
Acquisition	'
Schedule of the unaudited pro forma results	'
		For the Years Ended
		December 31,
		2013			2012
		(Unaudited)
	Revenue	$	114,492		$	110,957
	Net (loss) income	$	(4,945	)	$	5,991
Endeka	'
Acquisition	'
Summary of the purchase price allocation	'
		Estimated Fair Value			Estimated Useful
					Life (years)
	Consideration:
	Cash paid	$	4,894
	Holdback consideration		275
	Contingent consideration		1,329
	Total consideration	$	6,498
	Recognized amounts of identifiable assets acquired and liabilities assumed:
	Cash	$	20
	Other current assets		44
	Property and equipment		4,617
	Other assets		12
	Accounts payable		(992	)
	Other current liabilities		(211	)
	Notes payable and financed liabilities		(6,476	)
	Deferred tax liabilities		(2,637	)
	Net tangible liabilities acquired		(5,623	)
	Existing customer contracts and relationships		4,770			10
	Technology		930			6
	Trademark and tradename		300			10
	Non-compete agreement		250			2
	Other intangibles		95			10
	Goodwill		5,776
	Total purchase price	$	6,498
Cloud 9 Wireless, Inc.	'
Acquisition	'
Summary of the purchase price allocation	'
	The following table summarizes the allocation of the total purchase price as of August 6, 2012:
	Current assets	$	899
	Property, plant and equipment		65
	Intangible and other assets		1,758
	Goodwill		1,232
	Current liabilities		(454	)
	Net assets acquired	$	3,500
AWG	'
Acquisition	'
Summary of the purchase price allocation	'
		Estimated Fair Value			Weighted Average
					Estimated Useful
					Life (years)
	Consideration:
	Cash paid	$	14,800
	Holdback consideration		1,600
	Contingent consideration		980
	Total consideration	$	17,380
	Recognized amounts of identifiable assets acquired and liabilities assumed:
	Cash	$	215
	Restricted cash		515
	Accounts receivable		988
	Other current assets		609
	Property and equipment		2,297
	Accounts payable		(563	)
	Accrued expenses		(515	)
	Other current liabilities		(134	)
	Capital lease obligations		(932	)
	Other non-current liabilities		(130	)
	Deferred tax liabilities		(3,561	)
	Net tangible liabilities acquired		(1,211	)
	Existing airport contracts and relationships		4,700			6.7
	Technology		270			6
	Trademark and tradename		120			3
	Non-compete agreement		3,590			5
	Goodwill		9,911
	Total purchase price	$	17,380

Cash_and_cash_equivalents_and_1

Cash and cash equivalents and marketable securities (Tables)	12 Months Ended
	Dec. 31, 2013
Cash and cash equivalents and marketable securities	'
Schedule of Cash and cash equivalents, and marketable securities	'
		December 31,
		2013		2012
	Cash and cash equivalents:
	Cash	$	3,655	$	16,677
	Money market accounts		23,683		39,001
	Marketable securities		—		2,460
	Total cash and cash equivalents	$	27,338	$	58,138
	Short-term marketable securities:
	Marketable securities	$	32,962	$	41,558
	Total short-term marketable securities	$	32,962	$	41,558

Accounts_receivables_net_and_o1

Accounts receivables, net and other receivables (Tables)	12 Months Ended
	Dec. 31, 2013
Accounts receivables, net and other receivables	'
Schedule of accounts receivable, net of allowances for doubtful accounts and other receivables	'
		December 31,
		2013			2012
	Trade receivables, net of allowances	$	12,799		$	10,977
	Unbilled access fees		2,036			1,957
	Unbilled platform service arrangements		1,491			109
	Accounts receivable, net	$	16,326		$	13,043
	Unbilled access fees	$	264		$	838
	Unbilled platform service arrangements		16			287
	Non-current other receivables	$	280		$	1,125
Schedule of allowance for doubtful accounts	'
		Allowance for Doubtful Accounts
	Balance, December 31, 2010	$	107
	Additions charged to operations		115
	Deductions from reserves, net		(45	)
	Balance, December 31, 2011		177
	Additions charged to operations		45
	Deductions from reserves, net		(43	)
	Balance, December 31, 2012		179
	Additions charged to operations		209
	Deductions from reserves, net		(43	)
	Balance, December 31, 2013	$	345

Accrued_expenses_and_other_lia1

Accrued expenses and other liabilities (Tables)	12 Months Ended
	Dec. 31, 2013
Accrued expenses and other liabilities	'
Schedule of accrued expenses and other liabilities	'
		December 31,
		2013		2012
	Salaries and wages	$	3,024	$	3,312
	Revenue share		4,598		3,676
	Accrued partner network		736		1,134
	Accrued for construction in progress		2,717		1,003
	Deferred rent		853		791
	Holdback liabilities		1,875		—
	Contingent consideration		980		—
	Other		1,599		1,061
	Total accrued expenses and other liabilities	$	16,382	$	10,977

Property_and_equipment_Tables

Property and equipment (Tables)	12 Months Ended
	Dec. 31, 2013
Property and equipment	'
Summary of property and equipment, at cost less accumulated depreciation and amortization	'
		December 31,
		2013			2012
	Leasehold improvements	$	97,462		$	72,119
	Construction in progress		18,157			6,295
	Computer equipment		7,372			7,493
	Software		10,452			7,519
	Office equipment		412			411
	Total property and equipment		133,855			93,837
	Less: accumulated depreciation and amortization		(66,295	)		(51,426	)
	Total property and equipment, net	$	67,560		$	42,411
Schedule of depreciation and amortization expense	'
		For the Years Ended
		December 31,
		2013			2012			2011
	Network access	$	12,651		$	11,948		$	8,867
	Network operations		4,091			2,844			2,444
	Development and technology		1,992			1,049			873
	General and administrative		206			117			117
	Total depreciation and amortization of property and equipment	$	18,940		$	15,958		$	12,301

Goodwill_and_intangible_assets1

Goodwill and intangible assets (Tables)	12 Months Ended
	Dec. 31, 2013
Goodwill and intangible assets	'
Schedule of changes in goodwill	'
		Goodwill
	Balance, December 31, 2011	$	25,512
	Acquisition of Cloud 9		1,232
	Balance, December 31, 2012		26,744
	Acquisition of Endeka		5,776
	Acquisition of AWG		9,911
	Balance, December 31, 2013	$	42,431
Schedule of changes in intangible assets	'
		Intangible
		Assets
	Balance, December 31, 2011	$	9,846
	Additions		1,851
	Amortization expense		(1,103	)
	Balance, December 31, 2012		10,594
	Additions		15,069
	Amortization expense		(2,250	)
	Balance, December 31, 2013	$	23,413
Schedule of intangible assets	'
	Intangible assets at December 31, 2013 consist of the following:
		Weighted		Historical		Accumulated			Net
		Average		Cost		Amortization
		Life
	Venue contracts	10 years		$	36,356	$	(19,314	)	$	17,042
	Non-compete agreements	5 years			3,840		(224	)		3,616
	Technology	6 years			2,300		(441	)		1,859
	Advertiser relationships	5 years			70		(20	)		50
	Patents, trademarks and other	6 years			1,408		(562	)		846
				$	43,974	$	(20,561	)	$	23,413
	Intangible assets at December 31, 2012 consist of the following:
		Weighted		Historical		Accumulated			Net
		Average		Cost		Amortization
		Life
	Venue contracts	11 years		$	26,886	$	(17,783	)	$	9,103
	Technology	5 years			1,110		(93	)		1,017
	Advertiser relationships	5 years			70		(6	)		64
	Patents, trademarks and other	5 years			839		(429	)		410
	Total			$	28,905	$	(18,311	)	$	10,594
Schedule of amortization expense for fiscal years 2014 through 2018 and thereafter	'
	Year	Amortization
		Expense
	2014	$	3,681
	2015		3,525
	2016		3,451
	2017		3,218
	2018		2,370
	Thereafter		7,168
		$	23,413

Fair_value_measurement_Tables

Fair value measurement (Tables)	12 Months Ended
	Dec. 31, 2013
Fair value measurement	'
Schedule of financial assets that are measured at fair value on a recurring basis	'
	At December 31, 2013	Level 1			Level 2		Level 3		Total
	Assets:
	Cash equivalents	$	23,683		$	—	$	—	$	23,683
	Marketable securities		—			32,962		—		32,962
	Restricted cash		545			—		—		545
	Total assets	$	24,228		$	32,962	$	—	$	57,190
	Liabilities:
	Contingent consideration	$	—		$	—	$	1,942	$	1,942
	Total liabilities	$	—		$	—	$	1,942	$	1,942
	At December 31, 2012	Level 1			Level 2		Total
	Assets:
	Cash equivalents	$	39,001		$	2,460	$	41,461
	Marketable securities		—			41,558		41,558
	Restricted cash		30			—		30
	Total assets	$	39,031		$	44,018	$	83,049
Schedule of reconciliation of the beginning and ending amounts related to the fair value of contingent consideration for the Endeka and AWG acquisitions, categorized as Level 3	'
	Beginning balance, January 1, 2013	$	—
	Contingent consideration for acquisition of businesses		2,309
	Change in fair value		(367	)
	Balance, December 31, 2013	$	1,942

Stockholders_equity_Tables

Stockholders' equity (Tables)	12 Months Ended
	Dec. 31, 2013
Stockholders' equity	'
Schedule of amount of shares of common stock reserved	'
		December 31,		December 31,
		2013		2012
		(in thousands)
	Outstanding stock options under the 2001 Plan		1,859		2,345
	Outstanding stock options under the 2011 Plan		3,096		2,700
	Outstanding RSUs under the 2011 Plan		753		—
	Shares available for grant under the 2011 Plan		3,259		2,811
	Total		8,967		7,856

Income_taxes_Tables

Income taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income taxes	'
Schedule of income tax expense (benefit) by jurisdiction	'
		2013			2012			2011
	U.S. federal:
	Current	$	(402	)	$	1,651		$	1,971
	Deferred		983			1,189			2,261
	Total U.S. federal	$	581		$	2,840		$	4,232
	U.S. state and local:
	Current	$	248		$	327		$	1,092
	Deferred		457			(202	)		(1,260	)
	Total U.S. state and local	$	705		$	125		$	(168	)
Schedule of reconciliation of tax rates	'
		2013			2012			2011
	Federal statutory rate		34	%		34	%		34	%
	State and local		(5.7	)		1.1			(0.7	)
	Foreign rate differential		(3.2	)		—			—
	Stock options		(0.7	)		(2.6	)		1.9
	Non-controlling interests		15.2			(2.2	)		(2.0	)
	Valuation allowance		(119.1	)		—			—
	Transaction costs		(6.7	)		—			—
	Purchase price adjustments		6.6			—			—
	Revaluation of deferred tax assets		2.8			—			—
	Uncertain tax positions		(2.9	)		—			3.7
	Return to provision		9.3			(5.3	)		0.2
	Other		1.1			2			(0.1	)
	Income taxes		(69.3	)%		27	%		37	%
Schedule of deferred tax assets and liabilities	'
		2013			2012
	Deferred tax assets:
	Net operating loss carryforwards	$	3,508		$	1,917
	Outside basis differences for U.S. partnerships		2,842			3,289
	Stock options		3,018			2,086
	Deferred revenue		516			873
	Deferred compensation		355			340
	State taxes		34			5
	Other		404			347
	Valuation allowance		(3,963	)		(1,669	)
	Net deferred tax assets		6,714			7,188
	Deferred tax liabilities:
	Intangible assets		(6,737	)		(1,539	)
	Property and equipment		(2,154	)		(189	)
	Net deferred tax liabilities		(8,891	)		(1,728	)
	Net deferred taxes	$	(2,177	)	$	5,460
Schedule of changes in the valuation allowance	'
		Valuation
		Allowance
	Balance, December 31, 2010	$	3,109
	Decrease credited to operations		(1,287	)
	Balance, December 31, 2011		1,822
	Additions charged to operations		51
	Decrease credited to operations		(204	)
	Balance, December 31, 2012		1,669
	Additions charged to operations		2,294
	Decrease credited to operations		—
	Balance, December 31, 2013	$	3,963
Schedule of reconciliation of unrecognized tax benefits, excluding interest and penalties	'
		Uncertain Tax Positions
	Balance, December 31, 2012	$	392
	Additions for current period tax positions		—
	Balance, December 31, 2013	$	392

Commitments_and_contingencies_

Commitments and contingencies (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments and contingencies	'
Schedule of future minimum lease obligations under non-cancellable operating and capital leases	'
	Years ended December 31,	Capital			Operating
		Leases			Leases and
					Airport
					Guarantees
	2014	$	662		$	10,819
	2015		383			8,830
	2016		312			6,985
	2017		81			5,869
	2018		—			4,059
	Thereafter		—			14,477
	Minimum lease payments		1,438		$	51,039
	Less: Amounts representing interest ranging from 1.0% to 6.5%		(439	)
	Minimum lease payments	$	999
	Current portion	$	526
	Non-current portion	$	473

Stock_incentive_plans_Tables

Stock incentive plans (Tables)	12 Months Ended
	Dec. 31, 2013
Stock incentive plans	'
Schedule of recognized stock-based compensation expense	'
		Years ended
		December 31,
		2013			2012		2011
	Network operations	$	888		$	352	$	463
	Development and technology		380			352		577
	Selling and marketing		1,045			571		650
	General and administrative		2,193			1,460		1,733
	Total stock-based compensation expense	$	4,506		$	2,735	$	3,423
Schedule of stock option activity	'
		Number			Weighted		Weighted-		Aggregate
		of			Average		Average		Intrinsic
		Options			Exercise		Remaining		Value
		(000's)			Price		Contract
							Life
							(years)
	Outstanding at December 31, 2010		5,288		$	1.25		6.3	$	38,279
	Granted		2,381		$	13.02
	Exercised		(1,015	)	$	1.01
	Canceled/forfeited		(53	)	$	6.58
	Outstanding at December 31, 2011		6,601		$	5.5		7	$	30,996
	Granted		1,391		$	8.29
	Exercised		(1,899	)	$	1.36
	Canceled/forfeited		(1,048	)	$	11.85
	Outstanding at December 31, 2012		5,045		$	6.5		6.4	$	14,742
	Granted		1,351		$	6.73
	Exercised		(461	)	$	1.33
	Canceled/forfeited		(980	)	$	10.2
	Outstanding at December 31, 2013		4,955		$	6.31		6.6	$	9,535
	Vested, exercisable and expected to vest at December 31, 2013		4,788		$	6.25		6.5	$	9,520
	Exercisable at December 31, 2013		2,739		$	4.52		4.8	$	9,329
Summary of the RSU activity	'
		Number			Weighted
		of			Average
		Shares			Grant Date
		(000's)			Fair Value
	Nonvested at December 31, 2012		—		$	—
	Granted		799		$	6.21
	Vested		(6	)	$	6.39
	Canceled/forfeited		(40	)	$	6.05
	Nonvested at December 31, 2013		753		$	6.22

Net_loss_income_per_share_attr1

Net (loss) income per share attributable to common stockholders (Tables)	12 Months Ended
	Dec. 31, 2013
Net (loss) income per share attributable to common stockholders	'
Schedule of computation of basic and diluted net (loss) income per share attributable to common stockholders	'
		Years ended December 31,
		2013			2012		2011
		(in thousands)
	Numerator:
	Net (loss) income attributable to common stockholders, basic and diluted	$	(3,793	)	$	7,295	$	4,662
	Denominator:
	Weighted average common stock, basic		35,578			34,774		24,014
	Effect of dilutive stock options		—			2,543		3,457
	Effect of dilutive common stock warrants		—			—		10
	Weighted average common stock, diluted		35,578			37,317		27,481
	Net (loss) income per share attributable to common stockholders:
	Basic	$	(0.11	)	$	0.21	$	0.19
	Diluted	$	(0.11	)	$	0.2	$	0.17
Schedule of outstanding securities not included in computation of diluted net income per share	'
		Years ended
		December 31,
		2012			2011
		(in thousands)
	Convertible preferred stock		—			7,699
	Stock options		2,518			2,172
	Preferred stock warrants		—			26
	Total		2,518			9,897

Quarterly_financial_data_unaud1

Quarterly financial data (unaudited) (Tables)	12 Months Ended
	Dec. 31, 2013
Quarterly financial data (unaudited)	'
Schedule of quarterly financial data	'
		2013
		March 31			June 30			September 30		December 31
	Revenue	$	23,134		$	26,239		$	28,607	$	28,766
	(Loss) income from operations		(1,502	)	$	(424	)	$	784	$	(752	)
	Net (loss) income attributable to common stockholders		(1,121	)	$	(399	)	$	354	$	(2,627	)
	Basic (loss) earnings per share	$	(0.03	)	$	(0.01	)	$	0.01	$	(0.07	)
	Diluted (loss) earnings per share	$	(0.03	)	$	(0.01	)	$	0.01	$	(0.07	)
		2012
		March 31			June 30			September 30		December 31
	Revenue	$	24,187		$	24,302		$	26,017	$	28,000
	Income from operations	$	2,407		$	2,236		$	4,129	$	2,074
	Net income attributable to common stockholders	$	1,657		$	1,461		$	2,777	$	1,400
	Basic earnings per share	$	0.05		$	0.04		$	0.08	$	0.04
	Diluted earnings per share	$	0.05		$	0.04		$	0.07	$	0.04
		2011
		March 31			June 30			September 30		December 31
	Revenue	$	21,028		$	22,943		$	24,688	$	25,899
	Income from operations	$	1,729		$	2,427		$	2,981	$	4,040
	Net (loss) income attributable to common stockholders	$	(148	)	$	1,293		$	1,662	$	1,855
	Basic (loss) earnings per share	$	(0.03	)	$	0.06		$	0.05	$	0.06
	Diluted (loss) earnings per share	$	(0.03	)	$	0.05		$	0.05	$	0.05

The_business_Details

The business (Details) (Minimum)	12 Months Ended
	Dec. 31, 2013
	item
Minimum	'
The business	'
Number of small cell networks for cellular distributed antenna system	1,000,000
Number of customers	1,000,000,000
Number of commercial hotspots worldwide for which Wi-Fi subscriptions and day passes provide access	800,000

The_business_Details_2

The business (Details 2) (USD $)	0 Months Ended
In Thousands, except Share data, unless otherwise specified	3-May-11
Initial public offering	'
Common stock offered (in shares)	3,846,800
Public offering of common stock held by selling stockholders (in shares)	1,923,200
Proceeds from initial public offering after deducting underwriting discount, commission and offering expenses	$45,701
Underwriting discounts and commissions on public offering	3,635
Offering expenses on public offering	2,596
Issuance of common stock upon conversion of preferred stock (in shares)	22,845,764
Issuance of common stock upon exercise and conversion of preferred stock warrants (in shares)	20,172
Reverse stock split	'
Ratio for reverse stock split of outstanding common stock	5
Fractional shares settled in cash for common and preferred stockholders	$1
Number of fractional shares settled in cash for common and preferred stockholders	0

Summary_of_significant_account3

Summary of significant accounting policies (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Basis of presentation	'	'
Decrease in net loss attributable to common stockholders due to certain out-of-period adjustments	$217	'
Reclassified portion of unbilled receivables	'	$2,066
Concourse Communications Detroit, LLC	'	'
Principles of consolidation	'	'
Percentage of ownership in subsidiaries	70.00%	'
Chicago Concourse Development Group, LLC	'	'
Principles of consolidation	'	'
Percentage of ownership in subsidiaries	70.00%	'
Boingo Holding Participacoes Ltda.	'	'
Principles of consolidation	'	'
Percentage of ownership in subsidiaries	75.00%	'

Summary_of_significant_account4

Summary of significant accounting policies (Details 2) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Marketable securities	'	'	'
Short-term marketable securities	$32,962	$41,558	'
Long-term marketable securities	0	0	'
Restricted cash	'	'	'
Short-term restricted cash related to letters of credit	545	30	'
Restricted cash classified as long-term	0	0	'
Business combinations	'	'	'
Transaction costs associated with business combinations	$354	$50	$0
Total revenue | Affiliated entities	'	'	'
Concentrations of credit risk	'	'	'
Concentration risk percentage	'	'	18.00%
Number of groups of affiliated entities	2	2	1
Total revenue | Affiliated entities group one	'	'	'
Concentrations of credit risk	'	'	'
Concentration risk percentage	14.00%	17.00%	'
Total revenue | Affiliated entities group two	'	'	'
Concentrations of credit risk	'	'	'
Concentration risk percentage	14.00%	15.00%	'
Total accounts receivable | Affiliated entities	'	'	'
Concentrations of credit risk	'	'	'
Concentration risk percentage	12.00%	'	'
Number of groups of affiliated entities	1	3	'
Total accounts receivable | Affiliated entities group one	'	'	'
Concentrations of credit risk	'	'	'
Concentration risk percentage	'	26.00%	'
Total accounts receivable | Affiliated entities group two	'	'	'
Concentrations of credit risk	'	'	'
Concentration risk percentage	'	16.00%	'
Total accounts receivable | Affiliated entities group three	'	'	'
Concentrations of credit risk	'	'	'
Concentration risk percentage	'	10.00%	'

Summary_of_significant_account5

Summary of significant accounting policies (Details 3) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
	item
Goodwill	'	'
Number of reporting units	1	'
Number of operating segments	1	'
Number of reportable segments	1	'
Goodwill impairment charges	$0	$0
Computer equipment | Minimum	'	'
Property and equipment	'	'
Estimated useful lives	'2 years	'
Computer equipment | Maximum	'	'
Property and equipment	'	'
Estimated useful lives	'5 years	'
Software | Minimum	'	'
Property and equipment	'	'
Estimated useful lives	'2 years	'
Software | Maximum	'	'
Property and equipment	'	'
Estimated useful lives	'5 years	'
Office equipment | Minimum	'	'
Property and equipment	'	'
Estimated useful lives	'3 years	'
Office equipment | Maximum	'	'
Property and equipment	'	'
Estimated useful lives	'5 years	'
Leasehold improvements | Minimum	'	'
Property and equipment	'	'
Estimated useful lives	'2 years	'
Leasehold improvements | Maximum	'	'
Property and equipment	'	'
Estimated useful lives	'15 years	'

Summary_of_significant_account6

Summary of significant accounting policies (Details 4) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	item
Advertising, marketing and promotion costs	'	'	'
Capitalized advertising production costs	$0	$0	$0
Advertising expenses	2,302	2,374	1,393
Assumptions that were used to calculate the grant date fair value of employee stock option grants	'	'	'
Expected term	'6 years 3 months	'5 years 10 months 24 days	'6 years 4 months 24 days
Expected volatility (as a percent)	49.31%	48.90%	49.80%
Risk-free interest rate (as a percent)	1.34%	0.90%	2.40%
Dividend yield (as a percent)	0.00%	0.00%	0.00%
Stock-based compensation expense recognized for non-employee	$30	$372	$515
Dividends declared on common stock (in dollars per share)	$0	'	'
Dividends paid on common stock (in dollars per share)	$0	'	'
Number of dividend payouts anticipated in the foreseeable future	0	'	'
Platform service arrangements | Minimum	'	'	'
Revenue recognition	'	'	'
Term of the arrangement used to determine revenue recognition	'1 year	'	'
Platform service arrangements | Maximum	'	'	'
Revenue recognition	'	'	'
Term of the arrangement used to determine revenue recognition	'5 years	'	'
Telecom operations and wholesale partner arrangements | Minimum	'	'	'
Revenue recognition	'	'	'
Term of the arrangement used to determine revenue recognition	'3 years	'	'
Telecom operations and wholesale partner arrangements | Maximum	'	'	'
Revenue recognition	'	'	'
Term of the arrangement used to determine revenue recognition	'15 years	'	'

Summary_of_significant_account7

Summary of significant accounting policies (Details 5) (USD $)

0 Months Ended

12 Months Ended

12 Months Ended

In Thousands, except Share data, unless otherwise specified

3-May-11

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2009

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Concourse Communications Detroit, LLC

Concourse Communications Detroit, LLC

Concourse Communications Detroit, LLC

Concourse Communications Detroit, LLC

Chicago Concourse Development Group, LLC

Chicago Concourse Development Group, LLC

Chicago Concourse Development Group, LLC

BHPL

Non-controlling interests

'

'

'

'

'

'

'

'

'

'

'

'

Initial term of Detroit Operating Agreement

'

'

'

'

'7 years

'

'

'

'

'

'

'

Optional extension period of Detroit Operating Agreement

'

'

'

'

'4 years

'

'

'

'

'

'

'

Non-controlling owners capital account amount

'

$865

$823

'

'

'

'

$0

'

'

'

'

Percentage of net profits less capital expenditures of the preceding year allocated to non-controlling interest holders

'

'

'

'

'

'

'

'

30.00%

'

'

'

Distributions to non-controlling interest holders

'

$608

$678

$547

$48

$121

$85

'

$560

$557

$462

$0

Convertible preferred stock

'

'

'

'

'

'

'

'

'

'

'

'

Preferred stock issued (in shares)

'

0

0

'

'

'

'

'

'

'

'

'

Preferred stock outstanding (in shares)

'

0

0

'

'

'

'

'

'

'

'

'

Warrants exercisable into convertible preferred stock

'

'

'

'

'

'

'

'

'

'

'

'

Preferred stock warrants outstanding (in shares)

25,196

'

'

'

'

'

'

'

'

'

'

'

Issuance of common stock upon exercise and conversion of preferred stock warrants (in shares)

20,172

'

'

'

'

'

'

'

'

'

'

'

Summary_of_significant_account8

Summary of significant accounting policies (Details 6) (USD $)

3 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2011

Sep. 30, 2011

Jun. 30, 2011

Mar. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

item

Primary revenue source

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of reportable segments

'

'

'

'

'

'

'

'

'

'

'

'

1

'

'

Revenue

$28,766

$28,607

$26,239

$23,134

$28,000

$26,017

$24,302

$24,187

$25,899

$24,688

$22,943

$21,028

$106,746

$102,506

$94,558

Wholesale

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Primary revenue source

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

'

'

'

'

'

'

'

'

'

'

'

'

49,942

49,495

43,707

Retail subscription

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Primary revenue source

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

'

'

'

'

'

'

'

'

'

'

'

'

34,325

32,716

29,033

Retail single-use

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Primary revenue source

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

'

'

'

'

'

'

'

'

'

'

'

'

10,129

13,429

16,054

Advertising and other

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Primary revenue source

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

'

'

'

'

'

'

'

'

'

'

'

'

$12,350

$6,866

$5,764

Acquisitions_Details

Acquisitions (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Feb. 22, 2013

Feb. 22, 2013

Feb. 22, 2013

Feb. 22, 2013

Feb. 22, 2013

Feb. 22, 2013

Feb. 22, 2013

Feb. 22, 2013

Feb. 22, 2013

Dec. 31, 2013

Aug. 06, 2012

Dec. 31, 2013

Oct. 31, 2013

Oct. 31, 2013

Oct. 31, 2013

Oct. 31, 2013

Oct. 31, 2013

Oct. 31, 2013

Oct. 31, 2013

Oct. 31, 2013

Oct. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

In Thousands, unless otherwise specified

Endeka

Endeka

Endeka

Endeka

Endeka

Endeka

Endeka

Endeka

Endeka

Endeka

Cloud 9 Wireless, Inc.

Cloud 9 Wireless, Inc.

AWG

AWG

AWG

AWG

AWG

AWG

AWG

AWG

AWG

AWG

Endeka and AWG

Endeka and AWG

Existing contracts and relationships

Technology

Trademark and tradename

Non-compete agreement

Other intangibles

Identifiable intangible assets

Identifiable intangible assets

Contingent consideration

Contingent consideration

item

Existing contracts and relationships

Technology

Trademark and tradename

Non-compete agreement

Identifiable intangible assets

Identifiable intangible assets

Identifiable intangible assets

Contingent consideration

Contingent consideration

Minimum

Maximum

item

Minimum

Maximum

Acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of U.S. airports where the acquired entity operates public Wi-Fi

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

17

'

'

'

'

'

'

'

'

'

'

'

Number of components of contingent consideration

'

'

'

'

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Discount rate (as a percent)

'

'

'

'

'

'

'

'

'

40.00%

50.00%

50.50%

25.00%

'

'

'

'

'

'

'

'

12.00%

14.00%

3.10%

3.10%

'

'

Royalty rates (as a percent)

'

'

'

'

'

'

'

'

'

0.50%

1.50%

'

'

'

'

'

'

'

'

'

0.50%

'

'

'

'

'

'

Estimated Fair Value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash paid

'

'

'

$4,894

'

'

'

'

'

'

'

'

'

$3,500

'

$14,800

'

'

'

'

'

'

'

'

'

'

'

Holdback consideration

'

'

'

275

'

'

'

'

'

'

'

'

'

'

'

1,600

'

'

'

'

'

'

'

'

'

'

'

Contingent consideration

-980

'

'

1,329

'

'

'

'

'

'

'

'

'

'

'

980

'

'

'

'

'

'

'

'

'

'

'

Total consideration

'

'

'

6,498

'

'

'

'

'

'

'

'

'

'

'

17,380

'

'

'

'

'

'

'

'

'

'

'

Recognized amounts of identifiable assets acquired and liabilities assumed:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash

'

'

'

20

'

'

'

'

'

'

'

'

'

'

'

215

'

'

'

'

'

'

'

'

'

'

'

Restricted cash

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

515

'

'

'

'

'

'

'

'

'

'

'

Accounts receivable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

988

'

'

'

'

'

'

'

'

'

'

'

Other current assets

'

'

'

44

'

'

'

'

'

'

'

'

'

'

'

609

'

'

'

'

'

'

'

'

'

'

'

Current assets

'

'

'

'

'

'

'

'

'

'

'

'

'

899

'

'

'

'

'

'

'

'

'

'

'

'

'

Property and equipment

'

'

'

4,617

'

'

'

'

'

'

'

'

'

65

'

2,297

'

'

'

'

'

'

'

'

'

'

'

Other assets

'

'

'

12

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intangible and other assets

'

'

'

'

'

'

'

'

'

'

'

'

'

1,758

'

'

'

'

'

'

'

'

'

'

'

'

'

Accounts payable

'

'

'

-992

'

'

'

'

'

'

'

'

'

'

'

-563

'

'

'

'

'

'

'

'

'

'

'

Accrued expenses

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-515

'

'

'

'

'

'

'

'

'

'

'

Other current liabilities

'

'

'

-211

'

'

'

'

'

'

'

'

'

'

'

-134

'

'

'

'

'

'

'

'

'

'

'

Capital lease obligations

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-932

'

'

'

'

'

'

'

'

'

'

'

Other non-current liabilities

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-130

'

'

'

'

'

'

'

'

'

'

'

Current liabilities

'

'

'

'

'

'

'

'

'

'

'

'

'

-454

'

'

'

'

'

'

'

'

'

'

'

'

'

Notes payable and financed liabilities

'

'

'

-6,476

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred tax liabilities

'

'

'

-2,637

'

'

'

'

'

'

'

'

'

'

'

-3,561

'

'

'

'

'

'

'

'

'

'

'

Net tangible liabilities acquired

'

'

'

-5,623

'

'

'

'

'

'

'

'

'

'

'

-1,211

'

'

'

'

'

'

'

'

'

'

'

Intangibles

'

'

'

'

4,770

930

300

250

95

'

'

'

'

'

'

'

4,700

270

120

3,590

'

'

'

'

'

'

'

Goodwill

42,431

26,744

25,512

5,776

'

'

'

'

'

'

'

'

'

1,232

'

9,911

'

'

'

'

'

'

'

'

'

'

'

Net assets acquired

'

'

'

'

'

'

'

'

'

'

'

'

'

3,500

'

'

'

'

'

'

'

'

'

'

'

'

'

Total purchase price

'

'

'

6,498

'

'

'

'

'

'

'

'

'

'

'

17,380

'

'

'

'

'

'

'

'

'

'

'

Estimated Useful Life

'

'

'

'

'10 years

'6 years

'10 years

'2 years

'10 years

'

'

'

'

'

'5 years

'

'6 years 8 months 12 days

'6 years

'3 years

'5 years

'

'

'

'

'

'

'

Pro forma results

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

114,492

110,957

Net (loss) income

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

($4,945)

$5,991

Cash_and_cash_equivalents_and_2

Cash and cash equivalents and marketable securities (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Cash and cash equivalents:	'	'	'	'
Cash	$3,655	$16,677	'	'
Money market accounts	23,683	39,001	'	'
Marketable securities	'	2,460	'	'
Total cash and cash equivalents	27,338	58,138	93,933	25,721
Short-term marketable securities:	'	'	'	'
Marketable securities	32,962	41,558	'	'
Total short-term marketable securities	32,962	41,558	'	'
Interest income	$181	$183	$37	'

Accounts_receivables_net_and_o2

Accounts receivables, net and other receivables (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounts receivables, net and other receivables	'	'	'
Trade receivables, net of allowances	$12,799	$10,977	'
Unbilled access fees	2,036	1,957	'
Unbilled platform service arrangements	1,491	109	'
Accounts receivable, net	16,326	13,043	'
Unbilled access fees	264	838	'
Unbilled platform service arrangements	16	287	'
Non-current other receivables	280	1,125	'
Allowance for doubtful accounts	'	'	'
Balance at the beginning of the period	179	177	107
Additions charged to operations	209	45	115
Deductions from reserves, net	-43	-43	-45
Balance at the end of the period	$345	$179	$177

Accrued_expenses_and_other_lia2

Accrued expenses and other liabilities (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accrued expenses and other liabilities	'	'
Salaries and wages	$3,024	$3,312
Revenue share	4,598	3,676
Accrued partner network	736	1,134
Accrued for construction in progress	2,717	1,003
Deferred rent	853	791
Holdback liabilities	1,875	'
Contingent consideration	980	'
Other	1,599	1,061
Total accrued expenses and other liabilities	$16,382	$10,977

Property_and_equipment_Details

Property and equipment (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property and equipment	'	'	'
Total property and equipment	$133,855	$93,837	'
Less: accumulated depreciation and amortization	-66,295	-51,426	'
Total property and equipment, net	67,560	42,411	'
Depreciation and amortization allocation	'	'	'
Total depreciation and amortization of property and equipment	18,940	15,958	12,301
Network access	'	'	'
Depreciation and amortization allocation	'	'	'
Total depreciation and amortization of property and equipment	12,651	11,948	8,867
Network operations	'	'	'
Depreciation and amortization allocation	'	'	'
Total depreciation and amortization of property and equipment	4,091	2,844	2,444
Development and technology	'	'	'
Depreciation and amortization allocation	'	'	'
Total depreciation and amortization of property and equipment	1,992	1,049	873
General and administrative	'	'	'
Depreciation and amortization allocation	'	'	'
Total depreciation and amortization of property and equipment	206	117	117
Leasehold improvements	'	'	'
Property and equipment	'	'	'
Total property and equipment	97,462	72,119	'
Construction in progress	'	'	'
Property and equipment	'	'	'
Total property and equipment	18,157	6,295	'
Computer equipment	'	'	'
Property and equipment	'	'	'
Total property and equipment	7,372	7,493	'
Software	'	'	'
Property and equipment	'	'	'
Total property and equipment	10,452	7,519	'
Office equipment	'	'	'
Property and equipment	'	'	'
Total property and equipment	$412	$411	'

Property_and_equipment_Details1

Property and equipment (Details 2) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Property and equipment	'	'
Total property and equipment	$133,855	$93,837
Accumulated depreciation and amortization	66,295	51,426
Equipment acquired under capital leases	'	'
Property and equipment	'	'
Total property and equipment	1,220	402
Accumulated depreciation and amortization	$191	$224

Goodwill_and_intangible_assets2

Goodwill and intangible assets (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Aug. 06, 2012	Dec. 31, 2013	Feb. 22, 2013	Dec. 31, 2013	Oct. 31, 2013
In Thousands, unless otherwise specified				Cloud 9	Cloud 9	Endeka	Endeka	AWG	AWG
Changes in goodwill	'	'	'	'	'	'	'	'	'
Balance at the beginning of the period	$42,431	$26,744	$25,512	'	$1,232	'	$5,776	'	$9,911
Acquisition	'	'	'	1,232	'	5,776	'	9,911	'
Balance at the end of the period	$42,431	$26,744	$25,512	'	$1,232	'	$5,776	'	$9,911

Goodwill_and_intangible_assets3

Goodwill and intangible assets (Details 2) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Changes in intangible assets	'	'	'
Balance at the beginning of the period	$10,594	$9,846	'
Additions	15,069	1,851	'
Amortization expense	-2,250	-1,103	-1,655
Balance at the end of the period	$23,413	$10,594	$9,846

Goodwill_and_intangible_assets4

Goodwill and intangible assets (Details 3) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

In Thousands, unless otherwise specified

Venue contracts

Venue contracts

Non-compete agreements

Technology

Technology

Advertiser relationships

Advertiser relationships

Patents, trademarks and other

Patents, trademarks and other

Intangible assets

'

'

'

'

'

'

'

'

'

'

'

'

Weighted Average Life

'

'

'

'10 years

'11 years

'5 years

'6 years

'5 years

'5 years

'5 years

'6 years

'5 years

Historical Cost

$43,974

$28,905

'

$36,356

$26,886

$3,840

$2,300

$1,110

$70

$70

$1,408

$839

Accumulated Amortization

-20,561

-18,311

'

-19,314

-17,783

-224

-441

-93

-20

-6

-562

-429

Net Book Value

23,413

10,594

9,846

17,042

9,103

3,616

1,859

1,017

50

64

846

410

Amortization expense for fiscal years 2014 through 2018 and thereafter

'

'

'

'

'

'

'

'

'

'

'

'

2014

3,681

'

'

'

'

'

'

'

'

'

'

'

2015

3,525

'

'

'

'

'

'

'

'

'

'

'

2016

3,451

'

'

'

'

'

'

'

'

'

'

'

2017

3,218

'

'

'

'

'

'

'

'

'

'

'

2018

2,370

'

'

'

'

'

'

'

'

'

'

'

Thereafter

7,168

'

'

'

'

'

'

'

'

'

'

'

Net Book Value

$23,413

$10,594

$9,846

$17,042

$9,103

$3,616

$1,859

$1,017

$50

$64

$846

$410

Fair_value_measurement_Details

Fair value measurement (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Assets:	'	'
Restricted cash	$545	$30
Recurring basis | Level 1	'	'
Assets:	'	'
Cash equivalents	23,683	39,001
Restricted cash	545	30
Total assets	24,228	39,031
Recurring basis | Level 2	'	'
Assets:	'	'
Cash equivalents	'	2,460
Marketable securities	32,962	41,558
Total assets	32,962	44,018
Recurring basis | Level 3	'	'
Liabilities:	'	'
Contingent consideration	1,942	'
Total liabilities	1,942	'
Recurring basis | Total	'	'
Assets:	'	'
Cash equivalents	23,683	41,461
Marketable securities	32,962	41,558
Restricted cash	545	30
Total assets	57,190	83,049
Liabilities:	'	'
Contingent consideration	1,942	'
Total liabilities	$1,942	'

Fair_value_measurement_Details1

Fair value measurement (Details 2) (Fair value of contingent consideration, USD $)	0 Months Ended	12 Months Ended		0 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Feb. 22, 2013	Dec. 31, 2013	Dec. 31, 2013	Oct. 31, 2013	Dec. 31, 2013
	Endeka	Endeka	Endeka and AWG	AWG	AWG
Fair value measurement	'	'	'	'	'
Discount rate (as a percent)	50.50%	25.00%	'	3.10%	3.10%
Reconciliation between the beginning and ending balances of preferred stock warrants	'	'	'	'	'
Contingent consideration for acquisition of businesses	'	'	$2,309	'	'
Change in fair value	'	'	-367	'	'
Balance at the end of the period	'	'	$1,942	'	'

Stockholders_equity_Details

Stockholders' equity (Details) (USD $)

0 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

In Thousands, except Share data, unless otherwise specified

Jul. 29, 2011

Jun. 28, 2011

Jan. 11, 2011

Dec. 31, 2011

Dec. 31, 2002

Dec. 31, 2013

Dec. 31, 2012

3-May-11

Dec. 31, 2010

Jun. 28, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Jul. 31, 2001

Dec. 31, 2011

Feb. 28, 2002

Dec. 31, 2011

Dec. 31, 2003

Dec. 31, 2011

Sep. 30, 2006

Common stock warrants

2001 Plan

2001 Plan

2011 Plan

2011 Plan

Series A convertible preferred stock

Series A convertible preferred stock

Series A-2 convertible preferred stock

Series A-2 convertible preferred stock

Series B convertible preferred stock

Series B convertible preferred stock

Series C convertible preferred stock

Series C convertible preferred stock

Stockholders' equity (deficit)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Conversion price (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$3

'

$4.03

'

$3

'

$4.96

Convertible preferred stock conversion ratio

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1

'

1.07

'

1

'

1.2

Multiplier for number of shares converted (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$4.30

'

'

'

$5.95

Cumulative dividends per annum on preferred stock (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$0.15

'

$0.22

'

$0.15

'

$0.30

'

Common stock authorized (in shares)

'

'

'

'

'

100,000,000

100,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common Stock reserved

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding stock options (in shares)

'

'

'

6,601,000

'

4,955,000

5,045,000

'

5,288,000

'

1,858,543

2,345,000

3,096,000

2,700,000

'

'

'

'

'

'

'

'

Outstanding RSUs (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

753,000

'

'

'

'

'

'

'

'

'

Number of shares available for grant (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

3,259,000

2,811,000

'

'

'

'

'

'

'

'

Total (in shares)

'

'

'

'

'

8,967,000

7,856,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Note receivable from stockholder

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restricted common stock (in shares)

'

'

'

'

290,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restricted common stock at deemed fair value (in dollars per share)

'

'

'

'

$0.30

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash proceeds from restricted common stock granted

'

'

'

'

$9

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Note receivable from shareholder with an interest rate equal to the applicable federal rate

'

'

'

'

78

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Forgiveness of note receivable from stockholder and principal and interest outstanding

'

'

103

103

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Treasury stock

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Retirement of outstanding shares of treasury stock

1,256,608

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Retirement of treasury stock

$4,575

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock warrants

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock warrants outstanding (in shares)

'

'

'

'

'

'

'

25,196

'

26,322

'

'

'

'

'

'

'

'

'

'

'

'

Warrants exercised into shares (in shares)

'

21,525

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income_taxes_Details

Income taxes (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
U.S. federal:	'	'	'
Current	($402)	$1,651	$1,971
Deferred	983	1,189	2,261
Total U.S. federal	581	2,840	4,232
U.S. state and local:	'	'	'
Current	248	327	1,092
Deferred	457	-202	-1,260
Total U.S. state and local	705	125	-168
Reconciliation from U.S. federal statutory tax rate to effective income taxes rate	'	'	'
Federal statutory rate (as a percent)	34.00%	34.00%	34.00%
State and local (as a percent)	-5.70%	1.10%	-0.70%
Foreign rate differential (as a percent)	-3.20%	'	'
Stock options (as a percent)	-0.70%	-2.60%	1.90%
Non-controlling interests (as a percent)	15.20%	-2.20%	-2.00%
Valuation allowance (as a percent)	-119.10%	'	'
Transaction costs (as a percent)	-6.70%	'	'
Purchase price adjustments (as a percent)	6.60%	'	'
Revaluation of deferred tax assets (as a percent)	2.80%	'	'
Uncertain tax positions (as a percent)	-2.90%	'	3.70%
Return to provision (as a percent)	9.30%	-5.30%	0.20%
Other (as a percent)	1.10%	2.00%	-0.10%
Income taxes (as a percent)	-69.30%	27.00%	37.00%
Deferred tax assets:	'	'	'
Net operating loss carryforwards	3,508	1,917	'
Outside basis differences for U.S. partnerships	2,842	3,289	'
Stock options	3,018	2,086	'
Deferred revenue	516	873	'
Deferred compensation	355	340	'
State taxes	34	5	'
Other	404	347	'
Valuation allowance	-3,963	-1,669	-1,822
Net deferred tax assets	6,714	7,188	'
Deferred tax liabilities:	'	'	'
Intangible assets	-6,737	-1,539	'
Property and equipment	-2,154	-189	'
Net deferred tax liabilities	-8,891	-1,728	'
Net deferred taxes	-2,177	5,460	'
Net operating loss carryforwards	'	'	'
Amount of net operating loss carryforwards	5,847	'	'
Release to the valuation allowance	-2,294	-51	'
Foreign loss before income taxes	559	61	45
Period of cumulative results for determination of releasing valuation allowance	'3 years	'	'
Changes in the valuation allowance	'	'	'
Balance at the beginning of the period	1,669	1,822	3,109
Additions charged to operations	-2,294	-51	'
Decrease credited to operations	'	-204	-1,287
Balance at the end of the period	3,963	1,669	1,822
Windfall tax benefits from stock option exercises	55	2,190	246
United Kingdom	'	'	'
Net operating loss carryforwards	'	'	'
Foreign subsidiary deferred tax asset	644	'	'
Brazil	'	'	'
Net operating loss carryforwards	'	'	'
Foreign subsidiary deferred tax asset	69	'	'
Federal	'	'	'
Net operating loss carryforwards	'	'	'
Amount of net operating loss carryforwards	20,389	15,283	'
State	'	'	'
Net operating loss carryforwards	'	'	'
Amount of net operating loss carryforwards	37,153	29,955	'
Release to the valuation allowance	'	'	1,287
Changes in the valuation allowance	'	'	'
Additions charged to operations	'	'	1,287
Foreign	'	'	'
Net operating loss carryforwards	'	'	'
Amount of net operating loss carryforwards	$3,425	$1,588	'

Income_taxes_Details_2

Income taxes (Details 2) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Income taxes	'	'
Uncertain tax positions	$445	$392
Uncertain tax positions, reduction to deferred tax assets	106	'
Accrued interest, net of federal income tax benefits, and penalties	53	'
Reconciliation of unrecognized tax benefits	'	'
Balance at the beginning of the period	392	392
Balance at the end of the period	$392	$392

Commitments_and_contingencies_1

Commitments and contingencies (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Commitments and contingencies	'	'	'
Rent expense for leases	$20,234	$16,760	$15,511
Interest expense associated with the capital leases	15	11	8
Rent expense for leases of office facilities	1,227	1,209	1,323
Sublease income included in rent expenses	54	52	32
Capital Leases	'	'	'
2014	662	'	'
2015	383	'	'
2016	312	'	'
2017	81	'	'
Minimum lease payments	1,438	'	'
Less: Amounts representing interest ranging from 1.0% to 6.5%	-439	'	'
Capital leases minimum lease payments	999	'	'
Current portion	526	42	'
Non-current portion	473	136	'
Operating Leases and Airport Guarantees	'	'	'
2014	10,819	'	'
2015	8,830	'	'
2016	6,985	'	'
2017	5,869	'	'
2018	4,059	'	'
Thereafter	14,477	'	'
Minimum lease payments	$51,039	'	'
Maximum	'	'	'
Capital Leases	'	'	'
Interest rate (as a percent)	6.50%	'	'
Minimum	'	'	'
Capital Leases	'	'	'
Interest rate (as a percent)	1.00%	'	'

Commitments_and_contingencies_2

Commitments and contingencies (Details 2) (USD $)	1 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Oct. 31, 2013	Dec. 31, 2013
		item
Employment contracts	'	'
Number of officers with whom the entity entered into employment contracts	'	6
Letter of Credit | Silicon Valley Bank ("SVB") Agreement	'	'
Letters of credit	'	'
Term period of letter of Credit agreement	'1 year	'
Amount of letter of Credit which allow customer to draw	$1,800	'
Number of drafts drawn under Letter of Credit	'	0

Stock_repurchases_Details

Stock repurchases (Details) (USD $)	0 Months Ended	12 Months Ended	0 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2013	Apr. 02, 2013
			Maximum
Equity, Class of Treasury Stock	'	'	'
Amount of common stock approved by the entity for a stock repurchase program	'	'	$10,000
Number of shares repurchased and retired under the stock repurchase program	'	722	'
Value of shares repurchased and retired under the stock repurchase program excluding commissions paid	'	4,820	'
Average price under the stock repurchase program (in dollars per share)	'	$6.68	'
Remaining amount authorized for the share repurchase program	$5,180	'	'

Stock_incentive_plans_Details

Stock incentive plans (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Stock incentive plans	'	'	'	'
Number of options to purchase shares of common stock granted (in shares)	1,351,000	1,391,000	2,381,000	'
Number of options to purchase shares of common stock outstanding (in shares)	4,955,000	5,045,000	6,601,000	5,288,000
RSUs	'	'	'	'
Stock incentive plans	'	'	'	'
Number of RSUs granted (in shares)	799,000	'	'	'
2011 Plan	'	'	'	'
Stock incentive plans	'	'	'	'
Common stock shares reserved for issuance	7,108,013	'	'	'
Annual percentage increase alternative, increase in common stock reserved for issuance as a percentage of common stock outstanding	4.50%	'	'	'
Annual fixed increase alternative, increase in shares of common stock reserved for issuance (in shares)	3,000,000	'	'	'
Number of options to purchase shares of common stock outstanding (in shares)	3,096,000	2,700,000	'	'
2011 Plan | Stock Options	'	'	'	'
Stock incentive plans	'	'	'	'
Number of options to purchase shares of common stock granted (in shares)	5,026,486	'	'	'
2011 Plan | RSUs	'	'	'	'
Stock incentive plans	'	'	'	'
Number of RSUs granted (in shares)	799,289	'	'	'
2001 Plan	'	'	'	'
Stock incentive plans	'	'	'	'
Number of options to purchase shares of common stock outstanding (in shares)	1,858,543	2,345,000	'	'
2001 Plan | Stock Options	'	'	'	'
Stock incentive plans	'	'	'	'
Number of options to purchase shares of common stock outstanding (in shares)	0	'	'	'

Stock_incentive_plans_Details_

Stock incentive plans (Details 2) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Recognized stock-based compensation expense	'	'	'
Total stock-based compensation	$4,506	$2,735	$3,423
Network operations	'	'	'
Recognized stock-based compensation expense	'	'	'
Total stock-based compensation	888	352	463
Development and technology	'	'	'
Recognized stock-based compensation expense	'	'	'
Total stock-based compensation	380	352	577
Selling and marketing	'	'	'
Recognized stock-based compensation expense	'	'	'
Total stock-based compensation	1,045	571	650
General and administrative	'	'	'
Recognized stock-based compensation expense	'	'	'
Total stock-based compensation	$2,193	$1,460	$1,733

Stock_incentive_plans_Details_1

Stock incentive plans (Details 3) (Stock Options)	12 Months Ended
	Dec. 31, 2013
Stock Options	'
Stock incentive plans	'
Vesting period	'4 years
Vesting percentage when the individual completes 12 months of continuous service	25.00%
Continuous service period of individual	'12 months
Vesting percentage on a monthly basis	75.00%

Stock_incentive_plans_Details_2

Stock incentive plans (Details 4) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Number of Options	'	'	'	'
Outstanding at the beginning of the period (in shares)	5,045	6,601	5,288	'
Granted (in shares)	1,351	1,391	2,381	'
Exercised (in shares)	-461	-1,899	-1,015	'
Canceled/forfeited (in shares)	-980	-1,048	-53	'
Outstanding at the end of the period (in shares)	4,955	5,045	6,601	5,288
Vested, exercisable and expected to vest at the end of the period (in shares)	4,788	'	'	'
Exercisable at the end of the period (in shares)	2,739	'	'	'
Weighted Average Exercise Price	'	'	'	'
Outstanding at the beginning of the period (in dollars per share)	$6.50	$5.50	$1.25	'
Granted (in dollars per share)	$6.73	$8.29	$13.02	'
Exercised (in dollars per share)	$1.33	$1.36	$1.01	'
Canceled/forfeited (in dollars per share)	$10.20	$11.85	$6.58	'
Outstanding at the end of the period (in dollars per share)	$6.31	$6.50	$5.50	$1.25
Vested and expected to vest at the end of the period (in dollars per share)	$6.25	'	'	'
Exercisable at the end of the period (in dollars per share)	$4.52	'	'	'
Weighted-Average Remaining Contract Life (years)	'	'	'	'
Outstanding	'6 years 7 months 6 days	'6 years 4 months 24 days	'7 years	'6 years 3 months 18 days
Vested and expected to vest at the end of the period	'6 years 6 months	'	'	'
Exercisable at the end of the period	'4 years 9 months 18 days	'	'	'
Aggregate Intrinsic Value	'	'	'	'
Outstanding at the beginning of the period	$14,742	$30,996	$38,279	'
Outstanding at the end of the period	9,535	14,742	30,996	38,279
Vested and expected to vest at the end of the period	9,520	'	'	'
Exercisable at the end of the period	9,329	'	'	'
Cash proceeds from exercise of stock option	614	2,573	1,028	'
Total intrinsic value of stock options exercised (in dollars)	2,662	14,901	9,754	'
Tax benefits for the deductions from stock option exercises	$55	$2,190	$246	'
Weighted average grant-date fair value of stock options granted (in dollars per share)	$6.60	$8.10	$6.68	'

Stock_incentive_plans_Details_3

Stock incentive plans (Details 5) (Unvested stock option, USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013
Unvested stock option	'
Stock incentive plans	'
Total stock-based compensation expense	$7,345
Weighted average period over which unrecognized compensation expense is expected to be recognized	'2 years 11 months 12 days

Stock_incentive_plans_Details_4

Stock incentive plans (Details 6) (RSU, USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013
Number of Shares	'
Granted (in shares)	799,000
Vested (in shares)	-6,000
Canceled/forfeited (in shares)	-40,000
Nonvested at the end of the period (in shares)	753,000
Weighted Average Grant-Date Fair Value	'
Granted (In dollars per share)	$6.21
Vested (In dollars per share)	$6.39
Canceled/forfeited (In dollars per share)	$6.05
Nonvested at the end of the period (In dollars per share)	$6.22
Total stock-based compensation expense	$2,750
Weighted average period over which unrecognized compensation expense is expected to be recognized	'1 year 4 months 24 days
Executive and non executive	'
Stock incentive plans	'
Vesting period	'2 years
Vesting percentage when the individual completes 12 months of continuous service	50.00%
Continuous service period of individual	'12 months
Vesting percentage on a quarterly basis	50.00%
Existing members	'
Stock incentive plans	'
Vesting period	'1 year
New members	'
Stock incentive plans	'
Vesting period	'4 years
Annual vesting percentage	25.00%

Employee_benefit_plan_Details

Employee benefit plan (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee benefit plan	'	'	'
Employer contributions made to the plan	$330	$347	$285

Net_loss_income_per_share_attr2

Net (loss) income per share attributable to common stockholders (Details) (USD $)

3 Months Ended

12 Months Ended

In Thousands, except Per Share data, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2011

Sep. 30, 2011

Jun. 30, 2011

Mar. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Numerator:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net (loss) income attributable to common stockholders, basic and diluted

'

'

'

'

'

'

'

'

'

'

'

'

($3,793)

$7,295

$4,662

Denominator:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average common shares, basic

'

'

'

'

'

'

'

'

'

'

'

'

35,578

34,774

24,014

Effect of dilutive stock options (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

2,543

3,457

Effect of dilutive common stock warrants (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10

Weighted average common stock, diluted

'

'

'

'

'

'

'

'

'

'

'

'

35,578

37,317

27,481

Net (loss) income per share attributable to common stockholders:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Basic (in dollars per share)

($0.07)

$0.01

($0.01)

($0.03)

$0.04

$0.08

$0.04

$0.05

$0.06

$0.05

$0.06

($0.03)

($0.11)

$0.21

$0.19

Diluted (in dollars per share)

($0.07)

$0.01

($0.01)

($0.03)

$0.04

$0.07

$0.04

$0.05

$0.05

$0.05

$0.05

($0.03)

($0.11)

$0.20

$0.17

Anti-dilutive securities

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Anti-dilutive securities excluded from the computation of diluted net income per share

'

'

'

'

'

'

'

'

'

'

'

'

'

2,518

9,897

Convertible preferred stocks

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Anti-dilutive securities

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Anti-dilutive securities excluded from the computation of diluted net income per share

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7,699

Stock options

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Anti-dilutive securities

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Anti-dilutive securities excluded from the computation of diluted net income per share

'

'

'

'

'

'

'

'

'

'

'

'

'

2,518

2,172

Preferred stock warrants

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Anti-dilutive securities

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Anti-dilutive securities excluded from the computation of diluted net income per share

'

'

'

'

'

'

'

'

'

'

'

'

'

'

26

Quarterly_financial_data_unaud2

Quarterly financial data (unaudited) (Details) (USD $)	3 Months Ended												12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Quarterly financial data (unaudited)	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'
Revenue	$28,766	$28,607	$26,239	$23,134	$28,000	$26,017	$24,302	$24,187	$25,899	$24,688	$22,943	$21,028	$106,746	$102,506	$94,558
(Loss) income from operations	-752	784	-424	-1,502	2,074	4,129	2,236	2,407	4,040	2,981	2,427	1,729	-1,894	10,846	11,177
Net (loss) income attributable to common stockholders	($2,627)	$354	($399)	($1,121)	$1,400	$2,777	$1,461	$1,657	$1,855	$1,662	$1,293	($148)	($3,793)	$7,295	$4,662
Basic (loss) earnings per share (in dollars per share)	($0.07)	$0.01	($0.01)	($0.03)	$0.04	$0.08	$0.04	$0.05	$0.06	$0.05	$0.06	($0.03)	($0.11)	$0.21	$0.19
Diluted (loss) earnings per share (in dollars per share)	($0.07)	$0.01	($0.01)	($0.03)	$0.04	$0.07	$0.04	$0.05	$0.05	$0.05	$0.05	($0.03)	($0.11)	$0.20	$0.17

Subsequent_events_Details

Subsequent events (Details) (USD $)	12 Months Ended				1 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Mar. 31, 2014	Mar. 31, 2014
				RSU	Subsequent event	Subsequent event
					Options	Executive and non executive personnel
						RSU
Subsequent events	'	'	'	'	'	'
Number of options for common stock granted (in shares)	1,351,000	1,391,000	2,381,000	'	2,030,000	'
Exercise price (in dollars per share)	$6.73	$8.29	$13.02	'	$6.10	'
Issued (in shares)	'	'	'	799,000	'	1,340,200