GTT Communications (GTTNQ) 10-K 18 Mar 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Mar. 18, 2014	Jun. 30, 2013
Document and Entity Information [Abstract]	'	'	'
Entity Registrant Name	'GTT Communications, Inc.	'	'
Entity Central Index Key	'0001315255	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Filer Category	'Smaller Reporting Company	'	'
Trading Symbol	'gtt	'	'
Entity Common Stock, Shares Outstanding	'	23,615,566	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Period Focus	'FY	'	'
Document Fiscal Year Focus	'2013	'	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Public Float	'	'	$46,547,468

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
ASSETS	'	'
Cash and cash equivalents	$5,785	$4,726
Accounts receivable, net of allowances of $702 and $748, respectively	22,305	11,003
Deferred contract costs	1,975	1,346
Prepaid expenses and other current assets	2,878	1,877
Total current assets	32,943	18,952
Property and equipment, net	20,450	5,494
Intangible assets, net	43,618	20,903
Other assets	7,726	2,614
Goodwill	67,019	49,793
Total assets	171,756	97,756
LIABILITIES AND STOCKHOLDERS' EQUITY	'	'
Accounts payable	20,983	12,857
Accrued expenses and other current liabilities	26,999	13,301
Short-term debt	6,500	7,848
Deferred revenue	6,797	6,588
Total current liabilities	61,279	40,594
Long-term debt	85,960	34,981
Deferred revenue	1,480	234
Warrant liability	12,295	2,288
Other long-term liabilities	1,232	2,620
Total liabilities	162,246	80,717
Commitments and contingencies	'	'
Stockholders' equity:	'	'
Common stock, par value $.0001 per share, 80,000,000 shares authorized, 23,311,023, and 19,129,765 shares issued and outstanding as of December 31, 2013 and 2012, respectively	2	2
Additional paid-in capital	76,014	63,207
Accumulated deficit	-66,226	-45,437
Accumulated other comprehensive loss	-280	-733
Total stockholders' equity	9,510	17,039
Total liabilities and stockholders' equity	$171,756	$97,756

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Allowance for doubtful accounts receivable, current (in dollars)	$702	$748
Common stock, par value (in dollars per share)	$0.00	$0.00
Common stock, shares authorized	80,000,000	80,000,000
Common stock, shares, issued	23,311,023	19,129,765
Common stock, shares, outstanding	23,311,023	19,129,765

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Revenue:	'	'
Telecommunications services	$157,368	$107,877
Operating expenses:	'	'
Cost of telecommunications services	102,815	76,000
Selling, general and administrative expense	31,675	18,957
Restructuring costs, employee termination and other items	7,677	701
Depreciation and amortization	17,157	7,296
Total operating expenses	159,324	102,954
Operating (loss) income	-1,956	4,923
Other expense:	'	'
Interest expense, net	-8,408	-4,686
Loss on debt extinguishment	-706	0
Other expense, net	-11,724	-1,054
Total other expense	-20,838	-5,740
Loss before income taxes	-22,794	-817
Income tax (benefit) expense	-2,005	746
Net loss	($20,789)	($1,563)
Loss per share:	'	'
Basic (in dollars per share)	($0.95)	($0.08)
Diluted (in dollars per share)	($0.95)	($0.08)
Weighted average shares:	'	'
Basic (in shares)	21,985,241	18,960,347
Diluted (in shares)	21,985,241	18,960,347

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Loss (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Statement of Other Comprehensive Income [Abstract]	'	'
Net loss	($20,789)	($1,563)
Other comprehensive income (loss):	'	'
Foreign currency translation	453	-294
Comprehensive loss	($20,336)	($1,857)

Consolidated_Statement_of_Stoc

Consolidated Statement of Stockholders' Equity (USD $)	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]
In Thousands, except Share data, unless otherwise specified
Balance at Dec. 31, 2011	$18,131	$2	$62,442	($43,874)	($439)
Balance (in shares) at Dec. 31, 2011	'	18,674,860	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'
Share-based compensation for options issued	210	'	210	'	'
Share-based compensation for restricted stock issued	400	'	400	'	'
Share-based compensation for restricted stock issued (in shares)	'	406,248	'	'	'
Shares issued in connection with nLayer earn-out	0	'	'	'	'
Stock options exercised	3	'	3	'	'
Stock options exercised (in shares)	'	48,657	'	'	'
Tax benefit from stock option plans	152	'	152	'	'
Net loss	-1,563	'	'	-1,563	'
Foreign currency translation	-294	'	'	'	'
Balance at Dec. 31, 2012	17,039	2	63,207	-45,437	-733
Balance (in shares) at Dec. 31, 2012	'	19,129,765	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'
Share-based compensation for options issued	363	'	363	'	'
Share-based compensation for restricted stock issued	1,103	'	1,103	'	'
Share-based compensation for restricted stock issued (in shares)	'	722,357	'	'	'
Tax witholding related to the vesting of restricted stock units	-120	'	-120	'	'
Tax witholding related to the vesting of restricted stock units (in shares)	'	-32,297	'	'	'
Shares issued in connection with nLayer earn-out	1,650	'	1,650	'	'
Shares issued in connection with nLayer earnout (in shares)	'	356,122	'	'	'
Stock issued in private offering	6,182	'	6,182	'	'
Stock issued in private offering (in shares)	'	2,060,595	'	'	'
Stock options exercised	43	'	43	'	'
Stock options exercised (in shares)	92,125	92,125	'	'	'
Stock issued on debt extinguishment	3,586	'	3,586	'	'
Stock issued on debt extinguishment (in shares)	'	982,356	'	'	'
Net loss	-20,789	'	'	-20,789	'
Foreign currency translation	453	'	'	'	'
Balance at Dec. 31, 2013	$9,510	$2	$76,014	($66,226)	($280)
Balance (in shares) at Dec. 31, 2013	'	23,311,023	'	'	'

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:	'	'
Net loss	($20,789)	($1,563)
Adjustments to reconcile net loss to net cash provided by operating activities:	'	'
Depreciation and amortization	17,157	7,296
Shared-based compensation	1,466	610
Debt discount amortization	601	303
Change in fair value of warrant liability	8,658	1,072
Loss on debt extinguishment	706	0
Tax benefit for stock options	0	-152
Change in fair value of nLayer earn-out	1,978	0
Changes in operating assets and liabilities, net of effects of acquisitions:	'	'
Accounts receivable, net	485	1,017
Deferred contract costs	-619	517
Prepaid expenses and other current assets	5,252	361
Other assets	-4,533	-601
Accounts payable	604	-4,109
Accrued expenses and other current liabilities	-6,987	-1,382
Deferred revenue and other long-term liabilities	-1,300	644
Net cash provided by operating activities	2,679	4,013
Cash flows from investing activities:	'	'
Acquisition of businesses, net of cash acquired	-51,884	-13,833
Purchases of customer lists	-4,042	-1,723
Purchases of property and equipment	-4,053	-1,839
Net cash used in investing activities	-59,979	-17,395
Cash flows from financing activities:	'	'
Repayments of promissory note	-237	-472
Proceeds from (repayment of) line of credit, net	3,000	-3,100
Repayment of term loan	-28,544	-3,500
Proceeds from term loan	65,794	14,500
Proceeds from mezzanine debt, net of discount	11,651	7,214
Repayment of subordinate notes payable	-85	-105
Tax withholding related to the vesting of restricted stock units	-120	0
Tax benefit for stock options	0	152
Exercise of stock options	43	3
Stock issued in private offering	6,182	0
Net cash provided by financing activities	57,684	14,692
Effect of exchange rate changes on cash	675	167
Net increase in cash and cash equivalents	1,059	1,477
Cash and cash equivalents at beginning of year	4,726	3,249
Cash and cash equivalents at end of year	5,785	4,726
Supplemental disclosure of cash flow information:	'	'
Cash paid for interest	7,412	4,759
Supplemental disclosure of non-cash investing and financing activities:	'	'
Common stock issued in connection with the extinguishment of subordinated notes and accrued interest thereon	2,880	0
Measurement period adjustment related to PacketExchange acquisition	0	744
Adjustment related to August 2010 sales novations	0	2,885
Shares issued in connection with nLayer earn-out	1,650	0
Tinet [Member]	'	'
Supplemental disclosure of non-cash investing and financing activities:	'	'
Fair value of Tinet net assets acquired (Note 3)	59,925	0
IDC [Member]	'	'
Supplemental disclosure of non-cash investing and financing activities:	'	'
Fair value of Tinet net assets acquired (Note 3)	$4,167	$0

ORGANIZATION_AND_BUSINESS

ORGANIZATION AND BUSINESS	12 Months Ended
	Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
ORGANIZATION AND BUSINESS	'
	ORGANIZATION AND BUSINESS
	Organization and Business
	GTT Communications, Inc. (“GTT” or the “Company”) is a Delaware corporation which was incorporated on January 3, 2005. GTT operates a global Tier 1 IP network with one of the most interconnected Ethernet service platforms around the world. GTT provides highly reliable, scalable and secure cloud networking services. Our clients trust us to deliver solutions with simplicity, speed, and agility.

SIGNIFICANT_ACCOUNTING_POLICIE

SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
SIGNIFICANT ACCOUNTING POLICIES	'
	SIGNIFICANT ACCOUNTING POLICIES
	Basis of Presentation of Consolidated Financial Statements and Use of Estimates
	The consolidated financial statements include the accounts of the Company and it's subsidiaries. All significant intercompany transactions and balances have been eliminated in consolidation.
	The preparation of the consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenue and expenses during the reporting period. Significant accounting estimates to be made by management include allowances for doubtful accounts, valuation of goodwill and other long-lived assets, accrual for billing disputes, and valuation of equity instruments. Because of the uncertainty inherent in such estimates, actual results may differ from these estimates.
	Revenue Recognition
	The Company provides data connectivity solutions, such as dedicated circuit access, access aggregation and hubbing and managed network services to its customers. Certain of the Company’s current revenue activities have features that may be considered multiple elements. The Company believes that there is insufficient evidence to determine each element’s fair value and as a result, in those arrangements where there are multiple elements, revenue is recorded ratably over the term of the arrangement.
	Network Services and Support.   The Company’s services are provided pursuant to contracts that typically provide for payments of recurring charges on a monthly basis for use of the services over a committed term. Each service contract has a fixed monthly cost and a fixed term, in addition to a fixed installation charge (if applicable). At the end of the initial term of most service contracts, the contracts roll forward on a month-to-month or other periodic basis and continue to bill at the same fixed recurring rate. If any cancellation or termination charges become due from the customer as a result of early cancellation or termination of a service contract, those amounts are calculated pursuant to a formula specified in each contract. Recurring costs relating to supply contracts are recognized ratably over the term of the contract.
	Non-recurring Fees, Deferred Revenue.  Non-recurring fees for data connectivity typically take the form of one-time, non-refundable provisioning fees established pursuant to service contracts. The amount of the provisioning fee included in each contract is generally determined by marking up or passing through the corresponding charge from the Company’s supplier, imposed pursuant to the Company’s purchase agreement. Non-recurring revenue earned for providing provisioning services in connection with the delivery of recurring communications services is recognized ratably over the contractual term of the recurring service starting upon commencement of the service contract term. Fees recorded or billed from these provisioning services are initially recorded as deferred revenue then recognized ratably over the contractual term of the recurring service. Installation costs related to provisioning incurred by the Company from independent third party suppliers, directly attributable and necessary to fulfill a particular service contract, and which costs would not have been incurred but for the occurrence of that service contract, are recorded as deferred contract costs and expensed proportionally over the contractual term of service in the same manner as the deferred revenue arising from that contract. Deferred costs do not exceed deferred upfront fees. Based on operating activity, the Company believes the initial contractual term is the best estimate of the period of earnings.
	Other Revenue.   From time to time, the Company recognizes revenue in the form of fixed or determinable cancellation (pre-installation) or termination (post-installation) charges imposed pursuant to the service contract. This revenue is earned when a customer cancels or terminates a service agreement prior to the end of its committed term. This revenue is recognized when billed if collectability is reasonably assured. In addition, the Company from time to time sells equipment in connection with data networking applications. The Company recognizes revenue from the sale of equipment at the contracted selling price when title to the equipment passes to the customer (generally F.O.B. origin) and when collectability is reasonably assured.
	Translation of Foreign Currencies
	These consolidated financial statements have been reported in U.S. Dollars by translating asset and liability amounts of foreign subsidiaries at the closing exchange rate, equity amounts at historical rates, and the results of operations and cash flow at the average exchange rate prevailing during the periods reported.
	A summary of exchange rates used is as follows:
		U.S. Dollar / British Pounds Sterling				U.S. Dollar / Euro
		2013		2012		2013		2012
	Closing exchange rate at December 31	1.65		1.62		1.38		1.32
	Average exchange rate during the period	1.56		1.58		1.33		1.29
	Transactions denominated in foreign currencies are recorded at the rates of exchange prevailing at the time of the transaction. Monetary assets and liabilities denominated in foreign currencies are translated at the rate of exchange prevailing at the balance sheet date. Exchange differences arising upon settlement of a transaction are reported in the consolidated statements of operations in other income.
	Other Expense, Net
	The Company recognized other expense, net, of $11.7 million and $1.1 million for the years ended December 31, 2013 and 2012, respectively, which includes the warrant liability of $8.7 million that was marked to market in 2013 as well as the $2.0 million change in fair value of the earn-out related to the nLayer acquisition on April 30, 2012 for the year ended December 31, 2013.
	Accounts Receivable, Net
	Accounts receivable balances are stated at amounts due from the customer net of an allowance for doubtful accounts. Credit extended is based on an evaluation of the customer’s financial condition and is granted to qualified customers on an unsecured basis.
	The Company, pursuant to its standard service contracts, is entitled to impose a finance charge of a certain percentage per month with respect to all amounts that are past due. The Company’s standard terms require payment within 30 days of the date of the invoice. The Company treats invoices as past due when they remain unpaid, in whole or in part, beyond the payment time set forth in the applicable service contract.
	The Company determines its allowance for doubtful accounts by considering a number of factors, including the length of time trade receivables are past due, the customer’s current ability to pay its obligation to the Company, and the condition of the general economy and the industry as a whole. Specific reserves are also established on a case-by-case basis by management. The Company writes off accounts receivable when they become uncollectible. Credit losses have historically been within management’s expectations. Actual bad debts, when determined, reduce the allowance, the adequacy of which management then reassesses. The Company writes off accounts after a determination by management that the amounts at issue are no longer likely to be collected, following the exercise of reasonable collection efforts, and upon management’s determination that the costs of pursuing collection outweigh the likelihood of recovery. As of both December 31, 2013 and 2012, the total allowance for doubtful accounts was $0.7 million.
	Other Comprehensive Loss
	In addition to net loss, comprehensive loss includes charges or credits to equity occurring other than as a result of transactions with stockholders. For the Company, this consists of foreign currency translation adjustments.
	Share-Based Compensation
	Accounting Standards Codification (“ASC”) Topic 718, Compensation - Stock Compensation requires the Company to measure and recognize compensation expense for all share-based payment awards made to employees and directors based on estimated fair values.
	Share-based compensation expense recognized under ASC Topic 718 was $1.5 million for the year ended December 31, 2013 and $0.6 million for the year ended December 31, 2012. For the years ended December 31, 2013 and 2012, share-based compensation expense related to stock option grants was approximately $0.4 million and $0.2 million, respectively.  Share-based compensation expense related to restricted stock awards was $1.1 million for the year ended December 31, 2013 and $0.4 million for the year ended December 31, 2012. Share-based compensation expense is included in selling general and administrative expense on the accompanying consolidated statements of operations. See Note 10 for additional information.
	ASC Topic 718 requires companies to estimate the fair value of share-based payment awards on the date of grant using an option-pricing model. The value of the portion of the award that is ultimately expected to vest is recognized as expense over the requisite service periods in the Company’s consolidated statement of operations.
	Share-based compensation expense recognized in the Company’s consolidated statements of operations for the years ended December 31, 2013 and 2012, included compensation expense for share-based payment awards based on the grant date fair value estimated in accordance with the provisions of ASC Topic 718. The Company follows the straight-line single option method of attributing the value of stock-based compensation to expense. As stock-based compensation expense recognized in the consolidated statement of operations for the years ended December 31, 2013 and 2012 is based on awards ultimately expected to vest, it has been reduced for estimated forfeitures. ASC Topic 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.
	The Company uses the Black-Scholes option-pricing model as its method of valuation for share-based awards granted. The Company’s determination of fair value of share-based payment awards on the date of grant using an option-pricing model is affected by the Company’s stock price as well as assumptions regarding a number of complex and subjective variables. These variables include, but are not limited to; the Company’s expected stock price volatility over the term of the awards and the expected term of the awards.
	The Company accounts for non-employee stock-based compensation expense in accordance with ASC Topic 505, Equity-Based Payments to Non-Employees. The Company did not issue any options or shares to non-employees in 2013 and 2012.
	Cash and Cash Equivalents
	Included in cash and cash equivalents are deposits with financial institutions as well as short-term money market instruments, certificates of deposit and debt instruments with maturities of three months or less when purchased.
	Accounting for Derivative Instruments
	The Company accounts for derivative instruments in accordance with ASC 815, Derivatives and Hedging, which establishes accounting and reporting standards for derivative instruments and hedging activities, including certain derivative instruments imbedded in other financial instruments or contracts. The Company also considers the ASC 815 Subtopic 40, Contracts in Entity’s Own Equity, which provides criteria for determining whether freestanding contracts that are settled in a company’s own stock, including common stock warrants, should be designated as either an equity instrument, an asset or as a liability.
	The Company also considers in ASC 815, the guidance for determining whether an equity-linked financial instrument (or embedded feature) issued by an entity is indexed to the entity’s stock, and therefore, qualifying for the first part of the scope exception. As a result, the Company recorded a warrant liability in the amount of $1.3 million in 2013 and $0.8 million in 2012. As of December 31, 2013, the warrant liability was marked to market which resulted in a loss of $8.7 million in 2013. The balance of the warrant liability was $12.3 million at December 31, 2013. See Note 12 for additional information.
	Taxes
	The Company accounts for income taxes in accordance with ASC Topic 740, Income Taxes. Under ASC Topic 740, deferred tax assets are recognized for future deductible temporary differences and for net operating loss and tax credit carry-forwards, and deferred tax liabilities are recognized for temporary differences that will result in taxable amounts in future years. Deferred tax assets and liabilities are measured using the enacted tax rates expected to apply to taxable income in the periods in which the deferred tax asset or liability is expected to be realized or settled. A valuation allowance is provided to offset the net deferred tax asset if, based upon the available evidence, management determines that it is more likely than not that some or all of the deferred tax asset will not be realized.
	The Company may, from time to time, be assessed interest and/or penalties by taxing jurisdictions, although any such assessments historically have been minimal and immaterial to its financial results. The Company’s federal, state and international tax returns for 2009, 2010, 2011 and 2012 are still open. In the event the Company has received an assessment for interest and/or penalties, it has been classified in the consolidated statements of operations as other general and administrative costs.
	The Company is liable in certain cases for collecting regulatory fees and/or certain sales taxes from its customers and remitting the fees and taxes to the applicable governing authorities. The Company records taxes applicable under ASC Topic 605, Subtopic 45, Revenue Recognition - Principal Agent Considerations, on a net basis.
	Net Loss Per Share
	Basic loss per share is computed by dividing net loss available to common stockholders by the weighted average number of common shares outstanding. Diluted earnings per share reflect, in periods with earnings and in which they have a dilutive effect, the effect of common shares issuable upon exercise of stock options and warrants.
	The table below details the calculations of earnings per share (in thousands, except for share and per share amounts):
		Year Ended December 31,
		2013				2012
	Numerator for basic and diluted EPS – loss available to common stockholders	$	(20,789	)		$	(1,563	)
	Denominator for basic EPS – weighted average shares	21,985,241				18,960,347
	Effect of dilutive securities	—				—
	Denominator for diluted EPS – weighted average shares	21,985,241				18,960,347
	Loss per share: basic	$	(0.95	)		$	(0.08	)
	Loss per share: diluted	$	(0.95	)		$	(0.08	)
	The table below details the anti-dilutive common share items that were excluded in the computation of earnings per share (amounts in thousands):
		Year Ended December 31,
		2013			2012
	BIA warrant	1,055			698
	Plexus warrant	960			714
	Alcentra warrant	329			—
	Stock options	1,698			1,395
	Totals	4,042			2,807
	Software Capitalization
	Internal Use Software - The Company recognizes internal use software in accordance with ASC Topic 350-40, Internal-Use Software, which requires that certain costs incurred in purchasing or developing software for internal use be capitalized as internal use software development costs and included in fixed assets. Amortization of the software begins when the software is ready for its intended use.
	Property and Equipment
Property and equipment are stated at cost, net of accumulated depreciation computed using the straight-line method and in accordance with ASC 360, Property, Plant, and Equipment. Depreciation on these assets is computed over the estimated useful lives of the assets ranging from three to seven years. Leasehold improvements are amortized over the shorter of the term of the lease, excluding optional extensions, or the useful life. Depreciable lives used by the Company for its classes of assets are as follows:
Furniture and Fixtures	7 years
Network Equipment	5 years
Leasehold Improvements	up to 10 years
Computer Hardware and Software	3-5 years
ASC 360-10-35, Impairment or Disposal of Long-Lived Assets, provides guidance for recognition and measurement of the impairment of long-lived assets to be held, used and disposed of by sale. The Company reviews long-lived assets to be held and used for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. If the carrying amount of an asset exceeds its estimated future undiscounted cash flows, the asset is considered to be impaired. Impairment losses are measured as the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of are reported at the lower of the carrying amount or fair value less costs to sell.
Goodwill
Goodwill is the excess purchase price paid over identified intangible and tangible net assets of acquired businesses. Goodwill is not amortized, and is tested for impairment at the reporting unit level annually or when there are any indications of impairment, as required by ASC Topic 350, Intangibles - Goodwill and Other. ASC Topic 350 provides guidance on financial accounting and reporting related to goodwill and other intangibles, other than the accounting at acquisition for goodwill and other intangibles. A reporting unit is an operating segment, or component of an operating segment, for which discrete financial information is available and is regularly reviewed by management. We have one reporting unit to which goodwill is assigned.
In September 2011, the FASB issued Accounting Standards Update (“ASU”) No. 2011-08, Intangibles - Goodwill and Other (Topic 350): Testing Goodwill for Impairment. ASU 2011-08 is intended to simplify how entities, both public and nonpublic, test goodwill for impairment. ASU 2011-08 permits an entity 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 Topic 350, Intangibles - Goodwill and Other. The first step tests for impairment by applying fair value-based tests. The second step, if deemed necessary, measures the impairment by applying fair value-based tests to specific assets and liabilities. Application of the goodwill impairment test requires significant judgments including estimation of future cash flows, which is dependent on internal forecasts, estimation of the long-term rate of growth for the Company, the useful life over which cash flows will occur, and determination of the Company’s cost of capital. Changes in these estimates and assumptions could materially affect the determination of fair value and conclusions on goodwill impairment.
Intangibles
Intangible assets are accounted for in accordance with ASC Topic 350, Intangibles — Goodwill and Other. Intangible assets arose from business combinations and consist of customer contracts, acquired technology and restrictive covenants related to employment agreements that are amortized, on a straight-line basis, over periods of up to five years.
ASC 360-10-35, Impairment or Disposal of Long-Lived Assets, provides guidance for recognition and measurement of the impairment of long-lived assets to be held, used and disposed of by sale. The Company reviews long-lived assets to be held and used for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. If the carrying amount of an asset exceeds its estimated future undiscounted cash flows, the asset is considered to be impaired. Impairment losses are measured as the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of are reported at the lower of the carrying amount or fair value less costs to sell.
Fair Value of Financial Instruments
The fair values of the Company’s assets and liabilities that qualify as financial instruments under ASC Topic 825, Financial Instruments, including cash and cash equivalents, accounts receivable, accounts payable, short-term debt, and accrued expenses are carried at cost, which approximates fair value due to the short-term maturity of these instruments. The reported amounts of long-term obligations approximate fair value, given management’s evaluation of the instruments’ current rates compared to market rates of interest and other factors.
Accrued Carrier Expenses
The Company accrues estimated charges owed to its suppliers for services. The Company bases this accrual on the supplier contract, the individual service order executed with the supplier for that service, the length of time the service has been active, and the overall supplier relationship.
Disputed Carrier Expenses
It is common in the telecommunications industry for users and suppliers to engage in disputes over amounts billed (or not billed) in error or over interpretation of contract terms. The disputed carrier cost included in the consolidated financial statements includes disputed but unresolved amounts claimed as due by suppliers, unless management is confident, based upon its experience and its review of the relevant facts and contract terms, that the outcome of the dispute will not result in liability for the Company. Management estimates this liability and reconciles the estimates with actual results as disputes are resolved, or as the appropriate statute of limitations with respect to a given dispute expires.
For the year ended December 31, 2013, open disputes totaled approximately $7.3 million. Based upon its experience with each vendor and similar disputes in the past, and based upon management review of the facts and contract terms applicable to each dispute, management has determined that the most likely outcome is that the Company will be liable for approximately $2.3 million in connection with these disputes as of December 31, 2013. As of December 31, 2012, open disputes totaled approximately $4.1 million and the Company determined the liability from these disputes to be $1.1 million.
Recent Accounting Pronouncements
In July 2013, the FASB issued ASU 2013-11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists. Under current GAAP, there is no explicit guidance on the presentation of unrecognized tax benefits when such carryforwards exist, which has led to diversity in practice. ASU 2013-11 requires entities to present an unrecognized tax benefit as a reduction of a deferred tax asset for a net operating loss ("NOL") carryforward whenever the NOL or tax credit carryforward would be available to reduce the additional taxable income or tax due if the tax position is disallowed. The ASU is effective for fiscal years beginning after December 15, 2013, and interim periods within those years. The adoption of this guidance is not expected to have a material effect on our consolidated results of operations or financial condition.
Management does not believe that any recently issued, but not yet effective, accounting standards if currently adopted would have a material effect on the Company’s consolidated financial statements or the Company’s future results of operations.

ACQUISITIONS

ACQUISITIONS	12 Months Ended
	Dec. 31, 2013
Business Combinations [Abstract]	'
ACQUISITIONS	'
	ACQUISITIONS
	IDC
	On February 1, 2013, the Company entered into a stock purchase agreement with IDC Global Incorporated (“IDC”), a privately held company in Chicago. IDC owns and operates two data center facilities and its own metro optical fiber network in Chicago. The two data center facilities' fiber connects to 350 East Cermak, which is the largest multi-story data center property in the world. IDC provides cloud networking, co-location, and managed cloud services to nearly 100 clients with a focus on providing multi-location enterprises with a complete portfolio of cloud infrastructure services.
	Pursuant to the agreement, the Company acquired 100% of the issued and outstanding shares of capital stock of IDC for an aggregate purchase price of $4.6 million, which amount is subject to adjustment to the extent that IDC’s net working capital as of the closing of the transaction is determined to be greater or less than the estimated net working capital as of such date provided by IDC. For the year ended December 31, 2013, the Company has concluded that no adjustment will be made in regards to the IDC purchase price.
	The Company accounted for the acquisition using the acquisition method of accounting with GTT treated as the acquiring entity. Accordingly, consideration paid by the Company to complete the acquisition of IDC has been allocated to IDC’s assets and liabilities based upon their estimated fair values as of the date of completion of the acquisition, February 1, 2013. The Company estimated the fair value of IDC’s assets and liabilities based on discussions with IDC’s management, due diligence and information presented in financial statements. The following table summarizes the purchase price and the assets acquired and liabilities assumed as of the acquisition date at estimated fair value:
		Amounts in
		thousands
	Purchase Price:
	Cash consideration paid	$	3,593
	Fair value of liabilities assumed	1,338
	Total consideration	$	4,931
	Purchase Price Allocation:
	Acquired Assets
	Current assets	$	187
	Property and equipment	798
	Other assets	82
	Intangible assets	3,100
	Total fair value of assets acquired	4,167
	Goodwill	764
	Total consideration	$	4,931
	Intangible assets acquired include $3.1 million related to customer relationships with a weighted-average useful life of 5 years. Customer relationships are amortized on a straight-line basis based on the expected period of benefit.
	Amortization expense of $0.6 million has been recorded for the year ended December 31, 2013. Estimated amortization expense related to customer relationships created as a result of the IDC acquisition for each of the years subsequent to December 31, 2013, is as follows (amounts in thousands):
	2014	$	620
	2015	620
	2016	620
	2017	620
	2018	52
	Total	$	2,532
	Goodwill in the amount of $0.8 million was recorded as a result of the acquisition of IDC. Goodwill is calculated as the excess of the consideration transferred over the net assets recognized and represents the estimated future economic benefits arising from other assets acquired that could not be individually identified and separately recognized. The Company completed a 338(h)10 election in 2013 and concluded that goodwill is deductible for tax purposes.
	Tinet
	On April 30, 2013, the Company acquired from Neutral Tandem, Inc. (doing business as Inteliquent) all of the equity interests (the “Interests”) in NT Network Services, LLC and NT Network Services, LLC SCS (collectively, “Tinet”), which, together with the subsidiaries of such companies, comprise the data transport business of Inteliquent.  The acquisition was pursuant to an equity purchase agreement between the Company and Inteliquent on April 30, 2013.
	Pursuant to the agreement, the Company paid Inteliquent an aggregate purchase price of $52.5 million for the Interests, in cash, subject to a net working capital adjustment and an adjustment based on the cash and cash equivalents and amount of indebtedness of Tinet immediately prior to the acquisition. In addition, the Company will provide certain services to Inteliquent without charge for up to three years after the closing.  These services are provided under a separate service agreement that is valued at $2.0 million.
	To fund the Company’s acquisition of Tinet, the Company arranged financing with a new senior lender, Webster Bank, N.A. (“Webster”), on April 30, 2013. The Company entered into a credit agreement with Webster that, among other matters, provided for a term loan in the aggregate principal amount of $65.0 million and a revolving line of credit in the aggregate principal amount of $5.0 million. The financing is described in detail in Note 12.
	The Company accounted for the acquisition using the acquisition method of accounting with GTT treated as the acquiring entity. Accordingly, consideration paid by the Company to complete the acquisition of Tinet has been preliminarily allocated to Tinet's assets and liabilities based upon their estimated fair values as of the date of completion of the acquisition, April 30, 2013. The Company estimated the fair value of the acquired companies assets and liabilities based on discussions with management, due diligence and information presented in financial statements.
	The recorded amounts for acquired assets and liabilities assumed are provisional and subject to change. The Company will finalize the amounts recognized as it obtains the information necessary to complete the analysis. In accordance with US GAAP, the Company expects to finalize these amounts before April 30, 2014. The following table summarizes the purchase price and the assets acquired and liabilities assumed as of the acquisition date at estimated fair value:
		Amounts in
		thousands
	Purchase Price:
	Cash consideration paid	$	49,158
	Liabilities assumed
	Accounts payable	4,179
	Accrued expenses and other current liabilities	20,607
	Deferred revenue	2,443
	Total fair value of liabilities assumed	27,229
	Total consideration	$	76,387
	Purchase Price Allocation:
	Acquired assets
	Accounts receivable	$	11,601
	Prepaid expenses	1,137
	Other current assets	5,101
	Property and equipment	15,004
	Other assets	1,282
	Intangible assets	25,800
	Total fair value of assets acquired	59,925
	Goodwill	16,462
	Total consideration	$	76,387
	Intangible assets acquired include $25.0 million related to customer relationships with a weighted-average useful life of 5 years and $0.8 million related to the trade name. Customer relationships are amortized on a straight-line basis based on the expected period of benefit. The trade name is assessed as an indefinite-lived asset and is not amortized, but rather tested for impairment at least annually by comparing the estimated fair values to their carrying values.
	Amortization expense of $3.3 million has been recorded for the year ended December 31, 2013. Estimated amortization expense related to customer relationships created as a result of the Tinet acquisition for each of the years subsequent to December 31, 2013, is as follows (amounts in thousands):
	2014	$	5,000
	2015	5,000
	2016	5,000
	2017	5,000
	2018	1,667
Total	$	21,667
Goodwill in the amount of $16.5 million was recorded as a result of the acquisition of Tinet. Goodwill is calculated as the excess of the consideration transferred over the net assets recognized and represents the estimated future economic benefits arising from other assets acquired that could not be individually identified and separately recognized. The Company completed a 338(g) election for the Tinet Group in 2013 and concluded that goodwill is deductible for earnings and profit purposes.
The following schedule presents unaudited consolidated pro forma results of operations as if the Tinet acquisition had occurred on January 1, 2012. This information does not purport to be indicative of the actual results that would have occurred if the Tinet acquisition had actually been completed on January 1, 2012, nor is it necessarily indicative of the future operating results or the financial position of the combined company. The unaudited pro forma results of operations do not reflect the cost of any integration activities or benefits that may result from synergies that may be derived from any integration activities.
	Year Ended December 31,
	2013			2012
Amounts in thousands, except per share and share data
Revenue	$	185,526		$	179,971
Net loss	$	(23,920	)	$	(45,612	)
Net loss per share:
Basic	$	(1.09	)	$	(2.41	)
Diluted	$	(1.09	)	$	(2.41	)
Basic	21,985,241			18,960,347
Diluted	21,985,241			18,960,347

GOODWILL_AND_INTANGIBLE_ASSETS

GOODWILL AND INTANGIBLE ASSETS	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
GOODWILL AND INTANGIBLE ASSETS	'
	GOODWILL AND INTANGIBLE ASSETS
	During the third quarter of 2013, the Company completed its annual goodwill impairment testing in accordance with ASC Topic 350, Intangibles — Goodwill and Other.  After performing the qualitative assessment, the Company determined that it is more likely than not that the fair value of the reporting unit is greater than its carrying amount; therefore, the first and second steps of the goodwill impairment test are unnecessary and concluded that no impairment existed.
	The Company recorded goodwill in the amount of $0.8 million during the quarter ended March 31, 2013 in connection with the IDC acquisition and in accordance with ASC Topic 350, Intangibles — Goodwill and Other. Additionally, $3.1 million of the IDC purchase price was allocated to intangible assets related to customer relationships which are subject to straight-line amortization.
	During the quarter ended June 30, 2013, the Company recorded goodwill in the amount of $16.5 million in connection with the Tinet acquisition and in accordance with ASC Topic 350, Intangibles — Goodwill and Other. Additionally, $25.0 million of the Tinet purchase price was allocated to intangible assets related to customer relationships and $0.8 million to the trade name.
	The Company entered into sales novation agreements during 2013, which assigned and transferred to the Company certain service level agreements and all rights under those agreements, as well as certain supply agreements and obligations thereunder. The Company valued the customer relationships from the novation agreements and recorded $4.0 million in intangible assets.
	In accordance with US GAAP, goodwill and intangible assets with indefinite lives are not amortized, but rather tested for impairment at least annually by comparing the estimated fair values to their carrying values. Acquired trade names are assessed as indefinite lived assets because there is no foreseeable limit on the period of time over which they are expected to contribute cash flows.
	The changes in the carrying amount of goodwill for the year ended December 31, 2013 are as follows (amounts in thousands):
	Balance, January 1, 2012	$	40,950
	Goodwill associated with the nLayer acquisition	7,759
	Measurement period adjustment related to the PacketExchange acquisition	744
	Goodwill associated with the Electra acquisition	340
	Balance, December 31, 2012	49,793
	Goodwill associated with the IDC acquisition	764
	Goodwill associated with the Tinet acquisition	16,462
	Balance, December 31, 2013	$	67,019
	The following table summarizes the Company’s intangible assets as of December 31, 2013 and December 31, 2012 (amounts in thousands):
				December 31, 2013
		Amortization		Gross Asset		Accumulated		Net Book
		Period		Cost		Amortization		Value
	Customer contracts	3-7 years		$	58,611	$	16,218	$	42,393
	Carrier contracts	1 year		151		151		—
	Noncompete agreements	3-5 years		4,331		3,906		425
	Software	7 years		4,935		4,935		—
	Trade name (non-amortizing)	N/A		800		—		800
				$	68,828	$	25,210	$	43,618
				December 31, 2012
		Amortization		Gross Asset		Accumulated		Net Book
		Period		Cost		Amortization		Value
	Customer contracts	4-7 years		$	26,471	$	6,802	$	19,669
	Carrier contracts	1 year		151		151		—
	Noncompete agreements	4-5 years		4,331		3,593		738
	Software	7 years		4,935		4,439		496
				$	35,888	$	14,985	$	20,903
	Amortization expense was $10.2 million and $4.8 million for the year ended December 31, 2013 and 2012, respectively.
	Estimated amortization expense related to intangible assets subject to amortization at December 31, 2013 in each of the years subsequent to December 31, 2013 is as follows (amounts in thousands):
	2014	$	11,883
	2015	10,539
	2016	9,629
	2017	8,054
	2018	2,713
	Total	$	42,818

FAIR_VALUE_MEASUREMENTS

FAIR VALUE MEASUREMENTS	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
FAIR VALUE MEASUREMENTS	'
	FAIR VALUE MEASUREMENTS
	The Company accounts for fair value measurements in accordance with ASC 820, Fair Value Measurements, as it relates to financial assets and financial liabilities. ASC 820 establishes a framework for measuring fair value in accounting principles generally accepted in the United States of America and expands disclosures about fair value measurements. ASC 820 applies under other previously issued accounting pronouncements that require or permit fair value measurements, but does not require any new fair value measurements.
	ASC 820 defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. ASC 820 establishes a fair value hierarchy that distinguishes between (1) market participant assumptions developed based on market data obtained from independent sources (observable inputs) and (2) an entity’s own assumptions about market participant assumptions developed based on the best information available in the circumstances (unobservable inputs).
	The fair value hierarchy consists of three broad levels, which gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (level 1) and the lowest priority to unobservable inputs (level 3). The three levels of the fair value hierarchy under ASC 820 are described as follows:
	•	Level 1 - Unadjusted quoted prices in active markets for identical assets or liabilities that are accessible at the measurement date.
	•	Level 2 - Inputs other than quoted prices included within level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs include quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; inputs other than quoted prices that are observable for the asset or liability; and inputs that are derived principally from or corroborated by observable market data by correlation or other means.
	•	Level 3 - Inputs that are unobservable for the asset or liability.
	The following section describes the valuation methodologies that we used to measure financial instruments at fair value.
	The Company considers the valuation of its warrant liability as a level 3 liability based on unobservable inputs. The Company uses the Black-Scholes pricing model to measure the fair value of the warrant liability. As of December 31, 2013, the model required the input of highly subjective assumptions including volatility of 63%, expected term of 3 years, and risk-free interest rate of 0%.
	The sellers of nLayer may elect to receive up to one-half of the post-closing payments to which they become entitled in the form of common stock of the Company.  The Company considers the valuation of the nLayer earn-out as a level 3 liability based on unobservable inputs and measures the fair value of the option to take the stock using the Black-Scholes pricing model.  As of December 31, 2013, the model required the input of highly subjective assumptions including volatility of 60%, expected term of 3 months, and a risk-free interest rate of 0.1%.
	The following table presents the liabilities that are measured and recognized at fair value on a recurring basis classified under the appropriate level of the fair value hierarchy as of December 31, 2013 and 2012 (amounts in thousands):
		31-Dec-13
		Level 1			Level 2		Level 3		Total
	Liabilities:
	Warrant liability	$	—		$	—	$	12,295	$	12,295
	nLayer earn-out	—			—		2,900		2,900
		31-Dec-12
		Level 1			Level 2		Level 3		Total
	Liabilities:
	Warrant liability	$	—		$	—	$	2,288	$	2,288
	nLayer earn-out	$	—		$	—	$	6,200	$	6,200
	Rollforward of level 3 liabilities are as follows (amounts in thousands):
	Warrant Liability
	Balance, January 1, 2012	$	430
	Issuance of warrants	786
	Change in fair value of warrant liability	1,072
	Balance, December 31, 2012	2,288
	Issuance of warrants	1,349
	Change in fair value of warrant liability	8,658
	Balance, December 31, 2013	$	12,295
	nLayer Earn-out
	Balance, December 31, 2012	$	6,200
	nLayer earn-out paid in cash	(3,628		)
	nLayer earn-out paid in equity	(1,650		)
	Change in the fair value of the nLayer earn-out	1,978
	Balance, December 31, 2013	$	2,900
	During 2012, there was no change in the fair value of the initial $6.2 million liability related to the nLayer earn-out.
	The carrying amounts of cash equivalents, receivables, accounts payable, and accrued expenses approximate fair value due to the immediate or short-term maturity of these financial instruments. The fair value of notes payable is determined using current applicable rates for similar instruments as of the balance sheet date and approximates the carrying value of such debt.
	Assets and liabilities measured at a fair value on a non-recurring basis include goodwill, tangible assets, and intangible assets. Such assets are reviewed quarterly for impairment indicators. If a triggering event has occurred, the assets are remeasured when the estimated fair value of the corresponding asset group is less than the carrying value. The fair value measurements, in such instances, are based on significant unobservable inputs (level 3). There were no impairments recorded during the year ended December 31, 2013.

PROPERTY_AND_EQUIPMENT

PROPERTY AND EQUIPMENT	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
PROPERTY AND EQUIPMENT	'
	PROPERTY AND EQUIPMENT
	The following table summarizes the Company’s property and equipment at December 31, 2013 and 2012 (amounts in thousands):
		2013			2012
	Network equipment	$	30,485		$	8,710
	Computer software	3,423			3,353
	Leasehold improvements	757			744
	Furniture and fixtures	259			256
	Property and equipment, gross	34,924			13,063
	Less accumulated depreciation and amortization	(14,474		)	(7,569		)
	Property and equipment, net	$	20,450		$	5,494
	Depreciation expense associated with property and equipment was $6.9 million and $2.5 million for the years ended December 31, 2013 and 2012, respectively.

ACCRUED_EXPENSES_AND_OTHER_CUR

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES	12 Months Ended
	Dec. 31, 2013
Payables and Accruals [Abstract]	'
ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES	'
	ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES
	The following table summarizes the Company’s accrued expenses and other current liabilities as of December 31, 2013 and 2012 (amounts in thousands):
		2013		2012
	Accrued compensation and benefits	$	4,257	$	1,056
	Accrued interest payable	379		610
	Accrued taxes	3,407		843
	Accrued carrier costs	13,085		3,912
	nLayer earn-out	2,900		6,200
	Accrued other	2,971		680
		$	26,999	$	13,301

INCOME_TAXES

INCOME TAXES	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
INCOME TAXES	'
	INCOME TAXES
	The components of the provision for income taxes for the years ended December 31, 2013 and 2012 are as follows (amounts in thousands):
		2013				2012
	Current:
	Federal	$	—			$	219
	State	(8		)		144
	Foreign	720				279
	Subtotal	712				642
	Deferred:
	Federal	(6,000		)		(285		)
	State	(803		)		(93		)
	Foreign	1,439				(167		)
	Subtotal	(5,364		)		(545		)
	Change in valuation allowance	2,647				649
	Provision for income taxes	$	(2,005	)		$	746
	The provision for income taxes differs from the amount computed by applying the U.S. federal statutory income tax rate to income before income taxes for the reasons set forth below for the years ended December 31, 2013 and 2012:
		2013			2012
	U.S. federal statutory income tax rate	35	%		35	%
	Permanent items	(10.23	)%		(4.26	)%
	State taxes, net of federal benefit	(0.13	)%		(13.12	)%
	Foreign tax rate differential	1.55	%		(15.79	)%
	Change in valuation allowance	(14.17	)%		(98.81	)%
	Unrecognized tax positions	(1.31	)%		—	%
	Italian IRAP tax	(1.60	)%		—	%
	Prior year AMT	0.11	%		(6.74	)%
	Return to provision adjustments	(0.29	)%		12.37	%
	Effective Tax Rate	8.93	%		(91.35	)%
	In 2013, loss before income taxes of $22.8 million consisted of a $23.6 million domestic loss and $0.8 million foreign income. In 2012, income before income taxes of $0.8 million consisted of $0.4 million domestic and $0.4 million foreign income.
	As of December 31, 2013, the Company has net operating loss ("NOL") carryforwards of approximately $31.0 million for tax purposes which will be available to offset future income. The NOL carryforwards consist of $19.3 million in foreign NOL carryforwards, which have an indefinite life, and $11.7 million in U.S. NOL carryforward. If not used, these carryforwards will expire between 2020 and 2030. The Company's U.S. NOL carryforward are limited under Section 382 of the Internal Revenue Code ("IRC"). In future periods, an aggregate, tax effected amount of $0.8 million of NOL's will be recorded to Additional paid-in-capital when carried forward excess tax benefits from stock based compensation are utilized to reduce future cash tax payments.
	Deferred income taxes reflect the net effects of net operating loss carryforwards and the temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Significant components of the Company's deferred tax assets and liabilities at December 31, 2013 and 2012 are as follows (amounts in thousands):
			2013				2012
	Deferred tax assets:
	Net operating loss carryforwards		$	8,442			$	5,400
	Capital loss and trade deficit loss carryforwards		745				—
	Allowance for doubtful accounts		860				85
	Fixed assets		286				320
	Intangible Assets		5,585				—
	Mark to market adjustment		3,794				402
	Stock compensation		671				503
	Miscellaneous items		1,435				244
	Total deferred tax assets before valuation allowance		21,818				6,954
	Less: Valuation allowance		(19,806		)		(6,708		)
	Total deferred tax assets		2,012				246
	Deferred tax liabilities:
	Intangibles		—				780
	Miscellaneous items		239				274
	Total deferred tax liabilities		239				1,054
	Net deferred tax liability		$	(1,773	)		$	808
	As of December 31, 2012, the Company provided a full valuation allowance against its net deferred tax assets since, based on the application of the criteria in ASC 740, it concluded that it was more likely than not that the benefits of these assets would not be realized in the future. Following the criteria in ASC 740, the Company reviews this valuation allowance on a quarterly basis assessing the positive and negative evidence to determine if it is more likely than not that some or all of the deferred tax assets will be realized. Based on its assessment as of December 31, 2013, the Company determined that the release of a significant component of this valuation allowance was appropriate, therefore; the Company recorded a $2.9 million benefit for releasing valuation allowance previously provided for on certain UK deferred tax assets. This conclusion was based on management's consideration of various factors, including the Company's improved operating performance, its cumulative operating results or the prior twelve quarters and the outlook regarding the Company's prospective operating performance. As of December 31, 2013 the Company's valuation allowance relates mainly to capital loss carryforwards and net operating losses in the United States, Italy, France, Hong Kong, and certain UK assets, except to the extent that those assets are expected to be realized through the continuing amortization of the Company's deferred tax liabilities for intangible assets. This valuation allowance was determined based on the Company's application of the guidance in ASC 740 and its conclusion that it was more likely than not that the benefits of these assets would not be realized in the future. The Company will continue to assess the need to maintain this valuation allowance at each reporting date.
	Earnings are considered to be permanently reinvested and, accordingly, no U.S. federal and state income taxes have been provided thereon. Upon distribution of those earnings in the form of dividends or otherwise, the Company could be subject to both U.S. income taxes (subject to an adjustment for foreign tax credits) and withholding taxes payable to various foreign countries.
	The Company has performed an analysis of all open years, December 31, 2009 to December 31, 2012 and the expected tax positions to be taken at the balance sheet date. At December 31, 2013, approximately $1.9 million of unrecognized tax expense including penalties and interest in conjunction with its activities in certain countries where a permanent establishment may give rise to corporate income taxes. Of the $1.9 million recorded, $1.5 million was established through purchase price accounting. The gross unrecognized tax expense amount is not expected to materially change in the next 12 months. The following table presents a reconciliation of the beginning and ending amounts of unrecognized tax expense:
		2013				2012
	Balance, January 1	$	—			$	—
	Changes for tax positions of prior years	1,851				—
	Increases for tax positions related to the current year	—				—
	Settlements and lapsing of statues of limitations	—				—
	Balance, December 31	$	1,851			$	—

RESTRUCTURING_COSTS_EMPLOYEE_T

RESTRUCTURING COSTS, EMPLOYEE TERMINATION AND OTHER ITEMS	12 Months Ended
	Dec. 31, 2013
Restructuring and Related Activities [Abstract]	'
RESTRUCTURING COSTS, EMPLOYEE TERMINATION AND OTHER ITEMS	'
	RESTRUCTURING COSTS, EMPLOYEE TERMINATION AND OTHER ITEMS
	During the year ended December 31, 2013, the Company incurred costs associated with executing and closing the IDC and Tinet acquisitions, including payroll and employee severance costs, professional fees, termination costs associated with network grooming, and travel expenses. During the year ended December 31, 2013, the Company incurred $7.7 million in costs associated with executing and closing the IDC and Tinet acquisitions.
	The restructuring charges and accruals established by the Company, and activities related thereto, are summarized as follows for the year ended December 31, 2013 (amounts in thousands):
		Charges Net		Cash		Total
		of Reversals		Payments
	Balance, December 31, 2012	$	—	$	—	$	—
	Employment costs	4,600		4,564		36
	Professional fees	1,565		1,246		319
	Integration expenses	1,282		891		391
	Travel and other expenses	230		221		9
	Balance, December 31, 2013	$	7,677	$	6,922	$	755

EMPLOYEE_STOCKBASED_COMPENSATI

EMPLOYEE STOCK-BASED COMPENSATION BENEFITS	12 Months Ended
	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
EMPLOYEE STOCK-BASED COMPENSATION BENEFITS	'
	EMPLOYEE STOCK-BASED COMPENSATION BENEFITS
	Stock-Based Compensation Plan
	The Company adopted its 2006 Employee, Director and Consultant Stock Plan (the “2006 Plan”) in October 2006. In addition to stock options, the Company may also grant restricted stock or other stock-based awards under the 2006 Plan. The maximum number of shares issuable over the term of the 2006 Plan is limited to 3,500,000 shares.
	The Company adopted its 2011 Employee, Director and Consultant Stock Plan (the “2011 Plan”) in June 2011.  In addition to stock options, the Company may also grant restricted stock or other stock-based awards under the 2011 Plan. The maximum number of shares issuable over the term of the 2011 Plan is limited to 3,000,000 shares.  The 2006 Plan will continue according to its terms.
	The Plan permits the granting of stock options and restricted stock to employees (including employee directors and officers) and consultants of the Company, and non-employee directors of the Company. Options granted under the Plan have an exercise price of at least 100% of the fair market value of the underlying stock on the grant date and expire no later than ten years from the grant date. The options generally vest over four years with 25% of the option shares becoming exercisable one year from the date of grant and the remaining 75% annually or quarterly over the following three years. The Compensation Committee of the Board of Directors, as administrator of the Plan, has the discretion to use a different vesting schedule.
	Stock Options
	Due to the Company’s limited history as a public company, the Company has estimated expected volatility based on the historical volatility of certain comparable companies as determined by management. The risk-free interest rate assumption is based upon observed interest rates at the time of grant appropriate for the term of the Company’s employee stock options. The dividend yield assumption is based on the Company’s intent not to issue a dividend under its dividend policy. The Company uses the simplified method under ASC Topic 718, Compensation - Stock Compensation, to estimate the options’ expected term. Assumptions used in the calculation of the stock option expense were as follows:
			2013		2012
	Volatility		60.2% - 63.4%		61.9% - 64.0%
	Risk free rate		1.0% - 1.9%		.08% - 1.8%
	Term		6.25		6.25
	Dividend yield		—	%	—	%
	Stock-based compensation expense recognized in the accompanying consolidated statement of operations for the year ended December 31, 2013 is based on awards ultimately expected to vest, reduced for estimated forfeitures. ASC Topic 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. Forfeiture assumptions were based upon management’s estimate.
	The fair value of each stock option grant to employees is estimated on the date of grant. The fair value of each stock option grant to non-employees is estimated on the applicable performance commitment date, performance completion date or interim financial reporting date.
	During the years ended December 31, 2013 and 2012, the Company recognized compensation expense related to stock options of $0.4 million and $0.2 million, respectively, related to stock options issued to employees and consultants, which is included in selling, general and administrative expense on the accompanying consolidated statements of operations.
	During the year ended December 31, 2013, 486,750 options were granted pursuant to the Plan. The following table summarizes information concerning options outstanding as of December 31, 2013:
			Options		Weighted Average		Weighted			Weighted Average	Aggregate
					Exercise Price		Average			Remaining	Intrinsic
							Fair Value			Contractual	Value
										Life (Years)
	Balance at December 31, 2012		1,395,250		$	1.49	$	0.43		7.23	$	1,834,685
	Granted		486,750		3.64		2.07			—	—
	Exercised		(92,125	)	—		—			—	279,830
	Forfeited		(92,375	)	1.03		0.56			—	594,455
	Balance at December 31, 2013		1,697,500		$	2.09	$	0.47		7.31	$	7,962,468
	Exercisable		829,913		$	4.34	$	0.93		5.81	$	4,885,047
	As of December 31, 2013, the vested portion of share-based compensation expense was $0.8 million. As of December 31, 2013, the unvested portion of share-based compensation expense attributable to stock options and the period in which such expense is expected to vest and be recognized is as follows (amounts in thousands):
	2014	$	427
	2015	370
	2016	284
	2017	97
	Total	$	1,178
	The fair value of share-based compensation for options that vested as of December 31, 2013 was $1.2 million.
	Restricted Stock
	The Company expenses restricted shares granted in accordance with the provisions of ASC Topic 718. The fair value of the restricted shares issued is amortized on a straight-line basis over the vesting periods. During the year ended December 31, 2013 and 2012, the Company recognized compensation expense related to restricted stock of $1.1 million and $0.4 million, respectively, which is included in selling, general and administrative expense on the accompanying consolidated statements of operations.
	Following table summarizes restricted stock activity during the years ended December 31, 2013 and 2012:
			2013				2012
			Shares		Weighted		Shares		Weighted
					Average				Average
					Fair				Fair
					Value				Value
	Nonvested Balance at January 1,		660,001		$	1.66	536,125		$	1.04
	Granted		727,357		3.58		406,248		2.08
	Forfeited		(5,000	)	3.4		—		—
	Vested		(405,420	)	5.02		(282,372	)	2.38
	Nonvested Balance at December 31,		976,938		$	2.96	660,001		$	1.66
	As of December 31, 2013, the non-vested portion of share-based compensation expense attributable to restricted stock amounts to $1.1 million which is expected to vest and be recognized during a weighted-average period of 2.9 years.

DEFINED_CONTRIBUTION_PLAN

DEFINED CONTRIBUTION PLAN	12 Months Ended
	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]	'
DEFINED CONTRIBUTION PLAN	'
	DEFINED CONTRIBUTION PLAN
	The Company has a defined contribution retirement plan under Section 401(k) of the IRC that covers substantially all U.S. based employees. Eligible employees may contribute amounts to the plan, via payroll withholding, subject to certain limitations. During 2013 and 2012, the Company matched 40% of employees’ contributions to the plan. The Company’s 401(k) expense was $179,000 in 2013 and $84,000 in 2012.

DEBT

DEBT	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
DEBT	'
	DEBT
	The following summarizes the debt activity of the Company during the year ended December 31, 2013 (amounts in thousands):
		Total Debt			Senior Term Loan			Line of Credit			Mezzanine Notes		Subordinated Notes			Promissory Note
	Debt obligation as of December 31, 2012	$	42,829		$	24,500		$	—		$	15,481	$	2,611		$	237
	Issuance, net of discount	83,445			65,794			6,000			11,651		—			—
	Debt discount amortization	601			—			—			578		23			—
	Payments	(31,866		)	(28,544		)	(3,000		)	—		(85		)	(237		)
	Extinguishment of debt	(2,549		)	—			—			—		(2,549		)	—
	Debt obligation as of December 31, 2013	$	92,460		$	61,750		$	3,000		$	27,710	$	—		$	—
	Estimated annual commitments for debt maturities net of unamortized discounts are as follows at December 31, 2013 (amounts in thousands):
		Total Debt
	2014	$	6,500
	2015	6,500
	2016	79,460
	Total	$	92,460
	Senior Term Loan and Line of Credit
	On April 30, 2013, to fund the Company’s acquisition of Tinet, the Company arranged financing with a new senior lender, Webster. The Company entered into an agreement (the "Credit Agreement") with Webster that provided for a term loan in the aggregate principal amount of $65.0 million and a revolving line of credit in the aggregate principal amount of $5.0 million.
	The term loan matures on March 31, 2016, unless, on or before December 31, 2015, the maturity date of the mezzanine facility has been extended to (or beyond) September 30, 2018, or repaid in full or refinanced with the written consent of the lenders holding more than 50% of the outstanding obligations  (the “Required Lenders") and replaced with subordinated indebtedness having a maturity date acceptable to the Required Lenders, in which case the maturity date will automatically extend to April 30, 2018.
	The Company will repay the Webster term loan in twenty (20) quarterly principal installments with each payment of principal being accompanied by a payment of accrued interest, beginning in September 2013. The interest rate applicable to the Credit Agreement is the higher of LIBOR or 1% plus a margin of 5.5%. As of December 31, 2013, the interest rate was 6.5%.
	On April 30, 2013, the Company prepaid in full all indebtedness outstanding under its existing credit facilities with Silicon Valley Bank and terminated the collateral agreements related thereto, including under the syndicated credit agreement dated as of May 23, 2012, as amended, by and among the Company and certain of its United States subsidiaries, which consisted of approximately $26.0 million in principal and accrued and unpaid interest, and under the Amended and Restated Loan and Security Agreement dated as of June 29, 2011, as amended, by and among certain of the Company’s foreign subsidiaries, which consisted of approximately $1.5 million in principal and accrued and unpaid interest.
	On July 11, 2013, the Company entered into an amendment to the Credit Agreement that increased the revolving line-of-credit from $5.0 million to $7.5 million. As part of the amendment, Webster and GTT achieved broader-based commitments, expanding the Credit Agreement to include, East West Bank, Fifth Third Bank, Brown Brothers Harriman and Co., BDCA Funding LLC, and Crescent Capital. The obligations of the Company under the Credit Agreement are secured by substantially all of the Company’s tangible and intangible assets.
	On December 30, 2013, the Company entered into an amendment to the July 11, 2013 Credit Agreement that increased the revolving line-of-credit by $7.5 million, increasing the maximum borrowings under the line-of-credit to $15.0 million. The Company also issued a letter of credit facility of $4.0 million, which is a sublimit within the line-of-credit. As of December 31, 2013, the Company is in compliance with the reporting and financial covenants stated in the Credit Agreement.
	Mezzanine Notes
	On June 6, 2011, the Company entered into a note purchase agreement (the “Purchase Agreement”) with BIA Digital Partners SBIC II LP (“BIA”).  The Purchase Agreement provided for a total commitment of $12.5 million, of which $7.5 million was immediately funded (the “BIA Notes”).  The BIA Notes were issued at a discount to face value of $0.4 million and the discount is being amortized, into interest expense, over the life of the notes. The remaining $5.0 million of the committed financing was available to be called by the Company on or before August 11, 2011, subject to extension to December 31, 2011 at the sole option of BIA.  On September 19, 2011, BIA agreed to extend the commitment period and funded the Company an additional $1.0 million. The additional funding was issued at a discount to face value of $45,000, due to the warrants issued, and the discount is being amortized, into interest expense, over the life of the notes.
	On April 30, 2012, in connection with the nLayer acquisition, the Company entered into an amended and restated note purchase agreement (the "Amended Note Purchase Agreement") with BIA and Plexus Fund II, L.P. (“Plexus”). The Amended Note Purchase Agreement provided for an increase in the total financing commitment by $8.0 million, of which $6.0 million was immediately funded (the "Plexus Notes"). The Company called on the remaining $2.0 million on December 31, 2012. The funding by Plexus was issued at a total discount to face value of $0.8 million, due to the warrants issued, and the discount is being amortized into interest expense over the life of the notes.
	On April 30, 2013, the Company arranged financing through an increase in the Company’s existing mezzanine financing arrangement, in the form of a modification to its existing note purchase agreement (the “Second Amended Note Purchase Agreement”) with BIA and Plexus that expands the amount of borrowing under the Amended Note Purchase Agreement on April 30, 2012 and adds BNY Mellon-Alcentra Mezzanine III, L.P. (“Alcentra”) as a new note purchaser and lender thereunder (together with BIA and Plexus, the “Note Holders”). The Second Amended Note Purchase Agreement provides for a total financing commitment of $11.5 million, of which $8.5 million was immediately funded, (the “BIA Notes” and together with the "Plexus Notes", the “Notes”) and issued at a discount to face value of $1.3 million, due to the warrants issued. The discount is being amortized, into interest expense, over the life of the Notes.
	On November 1, 2013, the remaining $3.0 million of the committed financing was called on by the Company and the original interest rate of 13.5% per annum was reduced to 11.0% per annum for the entire outstanding Notes of $29.5 million. No warrants were issued.
	On December 30, 2013, the Company modified the Second Amended Note Purchase Agreement ( the "Third Amended Note Purchase Agreement") with BIA, Plexus, and Alcentra, expanding the total financing commitment by $10.0 million, of which $1.5 million was immediately funded. This additional financing commitment has no warrant issuances required. The remaining $8.5 million of the committed financing may be called by the Company, subject to certain conditions, on or before December 31, 2014. The Third Amended Note Purchase Agreement increases the maximum borrowings to $38.0 million with the Notes maturing on June 6, 2016, and shall bear interest at a rate of 11.0% per annum.
	The obligations of the Company under the Third Amended Note Purchase Agreement are secured by a second lien on substantially all of Company’s tangible and intangible assets. Pursuant to a pledge agreement, dated June 6, 2011, by and between BIA and the Company, the obligations of the Company are also secured by a pledge in all of the equity interests of the Company in its respective United States subsidiaries and a pledge of 65% of the voting equity interests and all of the non-voting equity interests of the Company in its respective non-United States subsidiaries.
	Concurrent with entering into the Third Amended Note Purchase Agreement, Webster and the Note Holders entered into an intercreditor and subordination agreement which governs, among other things, ranking and collateral access for the respective lenders.
	Warrants
	On June 6, 2011, pursuant to the Purchase Agreement, the Company issued to BIA a warrant to purchase from the Company 634,648 shares of the Company’s common stock, at an exercise price equal to $1.144 per share (as adjusted from time to time as provided in the Purchase Agreement). Upon the additional $1.0 million funding, the Company issued to BIA an additional warrant to purchase from the Company 63,225 shares of the Company’s common stock, at an exercise price equal to $1.181 per share.
	On April 30, 2012, pursuant to the Amended Note Purchase Agreement, the Company issued to Plexus a warrant to purchase from the Company 535,135 shares of the Company’s common stock at an exercise price equal to $2.208 per share (as adjusted from time to time as provided in the warrant). On December 31, 2012, the Company issued to Plexus an additional warrant to purchase from the Company 178,378 shares of the Company’s common stock, at an exercise price equal to $2.542 per share (as adjusted from time to time as provided in the warrant). Upon a change of control (as defined in the Amended Note Purchase Agreement), the repayment of the Notes prior to the maturity date of the Notes, the occurrence of an event of default under the Notes or the maturity date of the Notes, the holder of the warrant shall have the option to require the Company to repurchase from the holder the warrant and any shares received upon exercise of the warrant and then held by the holder, which repurchase would be at a price equal to the greater of the closing price of the Company’s common stock on such date or a price determined by reference to the Company’s adjusted enterprise value on such date, in each case, with respect to any warrant, less the exercise price per share.
	On April 30, 2013, pursuant to the Second Amended Note Purchase Agreement, the Company issued to Plexus a warrant to purchase from the Company 246,911 shares of the Company’s common stock, to BIA a warrant to purchase 356,649 shares of the Company’s common stock, and to Alcentra a warrant to purchase from the Company 329,214 shares of the Company’s common stock, each at an exercise price equal to $3.306 per share. All the warrants issued by the Company expire on June 6, 2016.
	The Company evaluated the down round ratchet feature embedded in the warrants and after considering ASC 480, Distinguishing Liabilities from Equity, which establishes standards for how an issuer classifies and measures in its statement of financial position certain financial instruments with characteristics of both liabilities and equity, and ASC 815,  Derivatives and Hedging, the Company concluded the warrants should be treated as a derivative and recorded a liability for the original fair value amount of $2.6 million on the respective dates of issuance.  During the year ended December 31, 2013, the warrant liability was marked to market which resulted in a loss of $8.7 million.  The balance of the warrant liability was $12.3 million as of December 31, 2013, which is included in other long-term liabilities.
	Subordinated Notes
	On February 8, 2010, the Company completed a financing transaction in which it sold debt and common stock (“February 2010 Units”), resulting in $2.4 million of proceeds to the Company.  The February 2010 Units consisted of $1.5 million in aggregate principal amount of the Company’s subordinated notes due February 8, 2012, and $0.9 million of the Company’s common stock. The subordinated notes were issued at a discount to face value of $0.2 million and the discount is being amortized into interest expense over the life of the notes. Interest on the subordinated notes accrues at 10% per annum. In May 2011, $1.4 million of the February 2010 Units subordinated notes were amended to mature in four equal installments on March 31, June 30, September 30 and December 31, 2013. The remaining $0.1 million of the February 2010 Units subordinated notes were paid off in February 2012.
	On December 31, 2010, the Company completed a financing transaction in which it sold debt and common stock (“December 2010 Units”), resulting in $2.2 million of proceeds to the Company.  The December 2010 Units consisted of $1.1 million in aggregate principal amount of the Company’s subordinated notes due December 31, 2013 and $1.1 million of the Company’s common stock. On February 16, 2011, the Company and the holders of the December 2010 Units amended the offering solely to increase the aggregate principal amount available for issuance, resulting in an additional $0.4 million of proceeds to the Company, consisting of $0.2 million in the aggregate principal amount of the Company’s subordinated notes due December 31, 2013, and $0.2 million of the Company’s common stock.  The subordinated notes were issued at a discount to face value of $0.3 million and the discount is being amortized into interest expense over the life of the notes. Interest on the subordinated notes accrues at 10% per annum. All accrued interest as of December 31, 2012 was paid.
	On March 28, 2013, the Company issued 2,259,617 shares of its common stock in a transaction exempt from registration under the Securities Act of 1933, as amended. The purchase price of the common stock in this private offering was $3.00 per share, representing a 15% discount to the average closing price of the common stock for the 30-day period preceding the closing of the offering. On April 30, 2013, the Company issued 783,334 shares of its common stock for a purchase price of $3.00 per share, representing the average closing price of the stock for that day.
	Among the purchasers of the common stock in the private offering on March 28, 2013, were certain of the holders of subordinated notes due 2013, who agreed to accept payment for the principal amount of their notes and the accrued but unpaid interest thereon in the form of common stock. Out of the $2.7 million aggregate principal amount of the Company’s subordinated notes due 2013 outstanding before this private offering, the holders of $2.6 million in aggregate principal amount of the notes accepted common stock in the private offering in full satisfaction of their notes. The Company issued an aggregate of 982,356 shares of common stock to these investors, in payment of the principal amount of their notes and accrued but unpaid interest in the aggregate amount of $0.3 million. The remainder of the common stock issued in the private offering was paid for in cash.
	As a result of the 15% discount to the average closing price of the common stock, GTT recorded a loss in the amount of $0.7 million on the 982,356 shares that were issued to extinguish the subordinate notes. In accordance with ASC Topic 470-50-40, Derecognition – General, these losses were included in debt extinguishment loss in the consolidated statements of operations for the year ended December 31, 2013.
	The shares of common stock sold in the private offering are restricted securities under the Securities Act of 1933. The Company entered into a Registration Rights Agreement with the purchasers of common stock in the private offering, pursuant to which the Company agreed to file with the Securities and Exchange Commission a registration statement related to the resale of such common stock by the investors.
	The previous balance of the subordinated notes of $2.7 million included $2.3 million due to a related party, Universal Telecommunications, Inc. H. Brian Thompson, the Company’s Executive Chairman of the Board of Directors, is also the head of Universal Telecommunications, Inc., his own private equity investment and advisory firm. Also, included in the previous balance was $0.2 million of the subordinated notes held by officers and directors of the Company.
	On December 31, 2013, the remaining total outstanding principal of the subordinated notes of $22,000 was paid, along with accrued interest of $2,000.
	Promissory Note
	As part of the June 2011 acquisition of PacketExchange, the Company assumed a promissory note of approximately $0.7 million. During the quarter ended March 31, 2013, the remaining balance of $0.2 million was paid.

CONCENTRATIONS

CONCENTRATIONS	12 Months Ended
	Dec. 31, 2013
Risks and Uncertainties [Abstract]	'
CONCENTRATIONS	'
	CONCENTRATIONS
	Financial instruments potentially subjecting the Company to a significant concentration of credit risk consist primarily of cash and cash equivalents. At times during the periods presented, the Company had funds in excess of $250,000 insured by the U.S. Federal Deposit Insurance Corporation, or in excess of similar Deposit Insurance programs outside of the United States, on deposit at various financial institutions. As of December 31, 2013, approximately $4.2 million of the Company’s deposits were held at institutions as balances in excess of the U.S. Federal Deposit Insurance Corporation and international insured deposit limits for those institutions. However, management believes the Company is not exposed to significant credit risk due to the financial position of the depository institutions in which those deposits are held.
	For the year ended December 31, 2013, no single customer exceeded 10% of total consolidated revenue. For the year ended December 31, 2012, no single customer exceeded 10% of total consolidated revenue.

COMMITMENTS_AND_CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
COMMITMENTS AND CONTINGENCIES	'
	COMMITMENTS AND CONTINGENCIES
	Office Space and Operating Leases
	Office facility leases may provide for escalations of rent or rent abatements and payment of pro rata portions of building operating expenses. The Company currently leases facilities in McLean, Virginia (lease expires July 2014), London (United Kingdom) (lease expires May 2017), Denver, Colorado (lease expires January 2015) and with the acquisition of PacketExchange, in London (United Kingdom) (lease expires April 2014). In connection with the acquisition of Tinet, the Company has additional facilities in Cagliari, Italy (lease expires 2016), Milan, Italy (lease expires July 2014), Frankfurt, Germany (lease expires 2022) and Chicago, IL (lease expires May 2014). The Company leases data center space in Chicago, IL that expires in May 2015 and December 2017.
	The Company records rent expense using the straight-line method over the term of the lease agreement. Office facility rent expense was $1.2 million and $0.8 million for the years ended December 31, 2013 and 2012, respectively.
	Estimated annual commitments under non-cancelable operating leases are as follows at December 31, 2013 (amounts in thousands):
		Office Space		Other
	2014	$	974	$	453
	2015	765		444
	2016	765		345
	2017	473		345
	2018	353		—
	2019 and beyond	1,410		—
		$	4,740	$	1,587
	Commitments - Supply agreements
	As of December 31, 2013, the Company had supplier agreement purchase obligations of $46.7 million associated with the telecommunications services that the Company has contracted to purchase from its vendors. The Company’s contracts are generally such that the terms and conditions in the vendor and client customer contracts are substantially the same in terms of duration. The back-to-back nature of the Company’s contracts means that the largest component of its contractual obligations is generally mirrored by its customer’s commitment to purchase the services associated with those obligations.
	Estimated annual commitments under supplier contractual agreements are as follows at December 31, 2013 (amounts in thousands):
		Supplier
		Agreements
	2014	$	9,168
	2015	14,409
	2016	14,521
	2017	2,138
	2018	735
	2019 and beyond	5,707
		$	46,678
	If a customer disconnects its service before the term ordered from the vendor expires, and if GTT were unable to find another customer for the capacity, GTT may be subject to an early termination liability. Under standard telecommunications industry practice (commonly referred to in the industry as “portability”), this early termination liability may be waived by the vendor if GTT were to order replacement service with the vendor of equal or greater value to the service cancelled. Additionally, the Company maintains some fixed network costs and from time to time, if it deems portions of the network are not economically beneficial, the Company may disconnect those portions and potentially incur early termination liabilities.
	“Take-or-Pay” Purchase Commitments
	Some of the Company’s supplier purchase agreements call for the Company to make monthly payments to suppliers whether or not the Company is currently utilizing the underlying capacity in that particular month (commonly referred to in the industry as “take-or-pay” commitments). As of December 31, 2013 and 2012, the Company’s aggregate monthly obligations under such take-or-pay commitments over the remaining term of all of those contracts totaled $4.3 million and $2.6 million, respectively.
	Contingencies - Legal proceedings
	From time to time, the Company is a party to legal proceedings arising in the normal course of its business. Aside from the matters discussed below, the Company does not believe that it is a party to any pending legal action that could reasonably be expected to have a material adverse effect on its business or operating results, financial position or cash flows.
	The Company filed a civil complaint against Artel, LLC on June 15, 2012 in the Fairfax County Virginia Circuit Court; docket number CL2012-04735, alleging breach of contract with respect to telecommunication services provided by the Company. In response to the Company’s complaint, Artel filed a counterclaim against the Company based on allegations of breach of contract and certain business torts. On December 20, 2013, the Court entered a judgment against the Company in the amount of $3.4 million.  The Court suspended the judgment, subject to a letter of credit during GTT’s appeal, which is presently pending in the Supreme Court of Virginia.  While the final outcome cannot be predicted, the Company has not accrued for this contingency as it believes it has a meritorious position on appeal and intends to contest the judgment vigorously.

FOREIGN_OPERATIONS

FOREIGN OPERATIONS	12 Months Ended
	Dec. 31, 2013
Foreign Operations [Abstract]	'
FOREIGN OPERATIONS	'
	FOREIGN OPERATIONS
	The Company’s operations are located primarily in the United States and Europe. The Company’s financial data by geographic area is as follows:
		US		ITALY		UK		OTHER		Total GTT
	2013
	Revenues by geographic area	$	88,995	$	39,959	$	23,481	$	4,933	$	157,368
	Long-lived assets at December 31	$	73,462	$	46,510	$	11,109	$	6	$	131,087
	2012
	Revenues by geographic area	$	82,430	$	—	$	20,648	$	4,799	$	107,877
	Long-lived assets at December 31	$	63,492	$	—	$	12,679	$	19	$	76,190

SIGNIFICANT_ACCOUNTING_POLICIE1

SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Basis of Presentation of Consolidated Financial Statements	'
	The consolidated financial statements include the accounts of the Company and it's subsidiaries. All significant intercompany transactions and balances have been eliminated in consolidation.
Use of Estimates	'
	The preparation of the consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenue and expenses during the reporting period. Significant accounting estimates to be made by management include allowances for doubtful accounts, valuation of goodwill and other long-lived assets, accrual for billing disputes, and valuation of equity instruments. Because of the uncertainty inherent in such estimates, actual results may differ from these estimates.
Revenue Recognition	'
	Revenue Recognition
	The Company provides data connectivity solutions, such as dedicated circuit access, access aggregation and hubbing and managed network services to its customers. Certain of the Company’s current revenue activities have features that may be considered multiple elements. The Company believes that there is insufficient evidence to determine each element’s fair value and as a result, in those arrangements where there are multiple elements, revenue is recorded ratably over the term of the arrangement.
	Network Services and Support.   The Company’s services are provided pursuant to contracts that typically provide for payments of recurring charges on a monthly basis for use of the services over a committed term. Each service contract has a fixed monthly cost and a fixed term, in addition to a fixed installation charge (if applicable). At the end of the initial term of most service contracts, the contracts roll forward on a month-to-month or other periodic basis and continue to bill at the same fixed recurring rate. If any cancellation or termination charges become due from the customer as a result of early cancellation or termination of a service contract, those amounts are calculated pursuant to a formula specified in each contract. Recurring costs relating to supply contracts are recognized ratably over the term of the contract.
	Non-recurring Fees, Deferred Revenue.  Non-recurring fees for data connectivity typically take the form of one-time, non-refundable provisioning fees established pursuant to service contracts. The amount of the provisioning fee included in each contract is generally determined by marking up or passing through the corresponding charge from the Company’s supplier, imposed pursuant to the Company’s purchase agreement. Non-recurring revenue earned for providing provisioning services in connection with the delivery of recurring communications services is recognized ratably over the contractual term of the recurring service starting upon commencement of the service contract term. Fees recorded or billed from these provisioning services are initially recorded as deferred revenue then recognized ratably over the contractual term of the recurring service. Installation costs related to provisioning incurred by the Company from independent third party suppliers, directly attributable and necessary to fulfill a particular service contract, and which costs would not have been incurred but for the occurrence of that service contract, are recorded as deferred contract costs and expensed proportionally over the contractual term of service in the same manner as the deferred revenue arising from that contract. Deferred costs do not exceed deferred upfront fees. Based on operating activity, the Company believes the initial contractual term is the best estimate of the period of earnings.
	Other Revenue.   From time to time, the Company recognizes revenue in the form of fixed or determinable cancellation (pre-installation) or termination (post-installation) charges imposed pursuant to the service contract. This revenue is earned when a customer cancels or terminates a service agreement prior to the end of its committed term. This revenue is recognized when billed if collectability is reasonably assured. In addition, the Company from time to time sells equipment in connection with data networking applications. The Company recognizes revenue from the sale of equipment at the contracted selling price when title to the equipment passes to the customer (generally F.O.B. origin) and when collectability is reasonably assured.
Translation of Foreign Currencies	'
	Transactions denominated in foreign currencies are recorded at the rates of exchange prevailing at the time of the transaction. Monetary assets and liabilities denominated in foreign currencies are translated at the rate of exchange prevailing at the balance sheet date. Exchange differences arising upon settlement of a transaction are reported in the consolidated statements of operations in other income.
	Translation of Foreign Currencies
	These consolidated financial statements have been reported in U.S. Dollars by translating asset and liability amounts of foreign subsidiaries at the closing exchange rate, equity amounts at historical rates, and the results of operations and cash flow at the average exchange rate prevailing during the periods reported.
Accounts Receivable, Net	'
	Accounts Receivable, Net
	Accounts receivable balances are stated at amounts due from the customer net of an allowance for doubtful accounts. Credit extended is based on an evaluation of the customer’s financial condition and is granted to qualified customers on an unsecured basis.
	The Company, pursuant to its standard service contracts, is entitled to impose a finance charge of a certain percentage per month with respect to all amounts that are past due. The Company’s standard terms require payment within 30 days of the date of the invoice. The Company treats invoices as past due when they remain unpaid, in whole or in part, beyond the payment time set forth in the applicable service contract.
	The Company determines its allowance for doubtful accounts by considering a number of factors, including the length of time trade receivables are past due, the customer’s current ability to pay its obligation to the Company, and the condition of the general economy and the industry as a whole. Specific reserves are also established on a case-by-case basis by management. The Company writes off accounts receivable when they become uncollectible. Credit losses have historically been within management’s expectations. Actual bad debts, when determined, reduce the allowance, the adequacy of which management then reassesses. The Company writes off accounts after a determination by management that the amounts at issue are no longer likely to be collected, following the exercise of reasonable collection efforts, and upon management’s determination that the costs of pursuing collection outweigh the likelihood of recovery. As of both December 31, 2013 and 2012, the total allowance for doubtful accounts was $0.7 million.
Other Comprehensive Loss	'
	Other Comprehensive Loss
	In addition to net loss, comprehensive loss includes charges or credits to equity occurring other than as a result of transactions with stockholders. For the Company, this consists of foreign currency translation adjustments.
Share-Based Compensation	'
	Share-Based Compensation
	Accounting Standards Codification (“ASC”) Topic 718, Compensation - Stock Compensation requires the Company to measure and recognize compensation expense for all share-based payment awards made to employees and directors based on estimated fair values.
	Share-based compensation expense recognized under ASC Topic 718 was $1.5 million for the year ended December 31, 2013 and $0.6 million for the year ended December 31, 2012. For the years ended December 31, 2013 and 2012, share-based compensation expense related to stock option grants was approximately $0.4 million and $0.2 million, respectively.  Share-based compensation expense related to restricted stock awards was $1.1 million for the year ended December 31, 2013 and $0.4 million for the year ended December 31, 2012. Share-based compensation expense is included in selling general and administrative expense on the accompanying consolidated statements of operations. See Note 10 for additional information.
	ASC Topic 718 requires companies to estimate the fair value of share-based payment awards on the date of grant using an option-pricing model. The value of the portion of the award that is ultimately expected to vest is recognized as expense over the requisite service periods in the Company’s consolidated statement of operations.
	Share-based compensation expense recognized in the Company’s consolidated statements of operations for the years ended December 31, 2013 and 2012, included compensation expense for share-based payment awards based on the grant date fair value estimated in accordance with the provisions of ASC Topic 718. The Company follows the straight-line single option method of attributing the value of stock-based compensation to expense. As stock-based compensation expense recognized in the consolidated statement of operations for the years ended December 31, 2013 and 2012 is based on awards ultimately expected to vest, it has been reduced for estimated forfeitures. ASC Topic 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.
	The Company uses the Black-Scholes option-pricing model as its method of valuation for share-based awards granted. The Company’s determination of fair value of share-based payment awards on the date of grant using an option-pricing model is affected by the Company’s stock price as well as assumptions regarding a number of complex and subjective variables. These variables include, but are not limited to; the Company’s expected stock price volatility over the term of the awards and the expected term of the awards.
	The Company accounts for non-employee stock-based compensation expense in accordance with ASC Topic 505, Equity-Based Payments to Non-Employees. The Company did not issue any options or shares to non-employees in 2013 and 2012.
Cash and Cash Equivalents	'
	Cash and Cash Equivalents
	Included in cash and cash equivalents are deposits with financial institutions as well as short-term money market instruments, certificates of deposit and debt instruments with maturities of three months or less when purchased.
Accounting for Derivative Instruments	'
	Accounting for Derivative Instruments
	The Company accounts for derivative instruments in accordance with ASC 815, Derivatives and Hedging, which establishes accounting and reporting standards for derivative instruments and hedging activities, including certain derivative instruments imbedded in other financial instruments or contracts. The Company also considers the ASC 815 Subtopic 40, Contracts in Entity’s Own Equity, which provides criteria for determining whether freestanding contracts that are settled in a company’s own stock, including common stock warrants, should be designated as either an equity instrument, an asset or as a liability.
	The Company also considers in ASC 815, the guidance for determining whether an equity-linked financial instrument (or embedded feature) issued by an entity is indexed to the entity’s stock, and therefore, qualifying for the first part of the scope exception. As a result, the Company recorded a warrant liability in the amount of $1.3 million in 2013 and $0.8 million in 2012. As of December 31, 2013, the warrant liability was marked to market which resulted in a loss of $8.7 million in 2013. The balance of the warrant liability was $12.3 million at December 31, 2013.
Taxes	'
	Taxes
	The Company accounts for income taxes in accordance with ASC Topic 740, Income Taxes. Under ASC Topic 740, deferred tax assets are recognized for future deductible temporary differences and for net operating loss and tax credit carry-forwards, and deferred tax liabilities are recognized for temporary differences that will result in taxable amounts in future years. Deferred tax assets and liabilities are measured using the enacted tax rates expected to apply to taxable income in the periods in which the deferred tax asset or liability is expected to be realized or settled. A valuation allowance is provided to offset the net deferred tax asset if, based upon the available evidence, management determines that it is more likely than not that some or all of the deferred tax asset will not be realized.
	The Company may, from time to time, be assessed interest and/or penalties by taxing jurisdictions, although any such assessments historically have been minimal and immaterial to its financial results. The Company’s federal, state and international tax returns for 2009, 2010, 2011 and 2012 are still open. In the event the Company has received an assessment for interest and/or penalties, it has been classified in the consolidated statements of operations as other general and administrative costs.
	The Company is liable in certain cases for collecting regulatory fees and/or certain sales taxes from its customers and remitting the fees and taxes to the applicable governing authorities. The Company records taxes applicable under ASC Topic 605, Subtopic 45, Revenue Recognition - Principal Agent Considerations, on a net basis.
Net Loss Per Share	'
	Net Loss Per Share
	Basic loss per share is computed by dividing net loss available to common stockholders by the weighted average number of common shares outstanding. Diluted earnings per share reflect, in periods with earnings and in which they have a dilutive effect, the effect of common shares issuable upon exercise of stock options and warrants.
Software Capitalization	'
	Software Capitalization
	Internal Use Software - The Company recognizes internal use software in accordance with ASC Topic 350-40, Internal-Use Software, which requires that certain costs incurred in purchasing or developing software for internal use be capitalized as internal use software development costs and included in fixed assets. Amortization of the software begins when the software is ready for its intended use.
Property and Equipment	'
	Property and Equipment
	Property and equipment are stated at cost, net of accumulated depreciation computed using the straight-line method and in accordance with ASC 360, Property, Plant, and Equipment. Depreciation on these assets is computed over the estimated useful lives of the assets ranging from three to seven years. Leasehold improvements are amortized over the shorter of the term of the lease, excluding optional extensions, or the useful life. Depreciable lives used by the Company for its classes of assets are as follows:
	Furniture and Fixtures	7 years
	Network Equipment	5 years
	Leasehold Improvements	up to 10 years
	Computer Hardware and Software	3-5 years
Goodwill	'
	Goodwill
	Goodwill is the excess purchase price paid over identified intangible and tangible net assets of acquired businesses. Goodwill is not amortized, and is tested for impairment at the reporting unit level annually or when there are any indications of impairment, as required by ASC Topic 350, Intangibles - Goodwill and Other. ASC Topic 350 provides guidance on financial accounting and reporting related to goodwill and other intangibles, other than the accounting at acquisition for goodwill and other intangibles. A reporting unit is an operating segment, or component of an operating segment, for which discrete financial information is available and is regularly reviewed by management. We have one reporting unit to which goodwill is assigned.
	In September 2011, the FASB issued Accounting Standards Update (“ASU”) No. 2011-08, Intangibles - Goodwill and Other (Topic 350): Testing Goodwill for Impairment. ASU 2011-08 is intended to simplify how entities, both public and nonpublic, test goodwill for impairment. ASU 2011-08 permits an entity 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 Topic 350, Intangibles - Goodwill and Other. The first step tests for impairment by applying fair value-based tests. The second step, if deemed necessary, measures the impairment by applying fair value-based tests to specific assets and liabilities. Application of the goodwill impairment test requires significant judgments including estimation of future cash flows, which is dependent on internal forecasts, estimation of the long-term rate of growth for the Company, the useful life over which cash flows will occur, and determination of the Company’s cost of capital. Changes in these estimates and assumptions could materially affect the determination of fair value and conclusions on goodwill impairment.
Intangibles	'
	Intangibles
	Intangible assets are accounted for in accordance with ASC Topic 350, Intangibles — Goodwill and Other. Intangible assets arose from business combinations and consist of customer contracts, acquired technology and restrictive covenants related to employment agreements that are amortized, on a straight-line basis, over periods of up to five years.
	ASC 360-10-35, Impairment or Disposal of Long-Lived Assets, provides guidance for recognition and measurement of the impairment of long-lived assets to be held, used and disposed of by sale. The Company reviews long-lived assets to be held and used for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. If the carrying amount of an asset exceeds its estimated future undiscounted cash flows, the asset is considered to be impaired. Impairment losses are measured as the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of are reported at the lower of the carrying amount or fair value less costs to sell.
Fair Value of Financial Instruments	'
	Fair Value of Financial Instruments
	The fair values of the Company’s assets and liabilities that qualify as financial instruments under ASC Topic 825, Financial Instruments, including cash and cash equivalents, accounts receivable, accounts payable, short-term debt, and accrued expenses are carried at cost, which approximates fair value due to the short-term maturity of these instruments. The reported amounts of long-term obligations approximate fair value, given management’s evaluation of the instruments’ current rates compared to market rates of interest and other factors.
Accrued Carrier Expenses	'
	Accrued Carrier Expenses
	The Company accrues estimated charges owed to its suppliers for services. The Company bases this accrual on the supplier contract, the individual service order executed with the supplier for that service, the length of time the service has been active, and the overall supplier relationship.
Disputed Carrier Expenses	'
	Disputed Carrier Expenses
	It is common in the telecommunications industry for users and suppliers to engage in disputes over amounts billed (or not billed) in error or over interpretation of contract terms. The disputed carrier cost included in the consolidated financial statements includes disputed but unresolved amounts claimed as due by suppliers, unless management is confident, based upon its experience and its review of the relevant facts and contract terms, that the outcome of the dispute will not result in liability for the Company. Management estimates this liability and reconciles the estimates with actual results as disputes are resolved, or as the appropriate statute of limitations with respect to a given dispute expires.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In July 2013, the FASB issued ASU 2013-11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists. Under current GAAP, there is no explicit guidance on the presentation of unrecognized tax benefits when such carryforwards exist, which has led to diversity in practice. ASU 2013-11 requires entities to present an unrecognized tax benefit as a reduction of a deferred tax asset for a net operating loss ("NOL") carryforward whenever the NOL or tax credit carryforward would be available to reduce the additional taxable income or tax due if the tax position is disallowed. The ASU is effective for fiscal years beginning after December 15, 2013, and interim periods within those years. The adoption of this guidance is not expected to have a material effect on our consolidated results of operations or financial condition.
	Management does not believe that any recently issued, but not yet effective, accounting standards if currently adopted would have a material effect on the Company’s consolidated financial statements or the Company’s future results of operations.

SIGNIFICANT_ACCOUNTING_POLICIE2

SIGNIFICANT ACCOUNTING POLICIES (Tables)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Schedule of Differences between Reported Amount and Reporting Currency Denominated Amount	'
	A summary of exchange rates used is as follows:
		U.S. Dollar / British Pounds Sterling				U.S. Dollar / Euro
		2013		2012		2013		2012
	Closing exchange rate at December 31	1.65		1.62		1.38		1.32
	Average exchange rate during the period	1.56		1.58		1.33		1.29
Schedule of Earnings Per Share, Basic and Diluted	'
	The table below details the calculations of earnings per share (in thousands, except for share and per share amounts):
		Year Ended December 31,
		2013				2012
	Numerator for basic and diluted EPS – loss available to common stockholders	$	(20,789	)		$	(1,563	)
	Denominator for basic EPS – weighted average shares	21,985,241				18,960,347
	Effect of dilutive securities	—				—
	Denominator for diluted EPS – weighted average shares	21,985,241				18,960,347
	Loss per share: basic	$	(0.95	)		$	(0.08	)
	Loss per share: diluted	$	(0.95	)		$	(0.08	)
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	'
	The table below details the anti-dilutive common share items that were excluded in the computation of earnings per share (amounts in thousands):
		Year Ended December 31,
		2013			2012
	BIA warrant	1,055			698
	Plexus warrant	960			714
	Alcentra warrant	329			—
	Stock options	1,698			1,395
	Totals	4,042			2,807
Schedule Of Property Plan And Equipment Estimated Useful Life	'
	Depreciable lives used by the Company for its classes of assets are as follows:
	Furniture and Fixtures	7 years
	Network Equipment	5 years
	Leasehold Improvements	up to 10 years
	Computer Hardware and Software	3-5 years

ACQUISITIONS_Tables

ACQUISITIONS (Tables)	12 Months Ended
	Dec. 31, 2013
Business Acquisition [Line Items]	'
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	'
	Estimated amortization expense related to intangible assets subject to amortization at December 31, 2013 in each of the years subsequent to December 31, 2013 is as follows (amounts in thousands):
	2014	$	11,883
	2015	10,539
	2016	9,629
	2017	8,054
	2018	2,713
	Total	$	42,818
IDC [Member]	'
Business Acquisition [Line Items]	'
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	'
	The following table summarizes the purchase price and the assets acquired and liabilities assumed as of the acquisition date at estimated fair value:
		Amounts in
		thousands
	Purchase Price:
	Cash consideration paid	$	3,593
	Fair value of liabilities assumed	1,338
	Total consideration	$	4,931
	Purchase Price Allocation:
	Acquired Assets
	Current assets	$	187
	Property and equipment	798
	Other assets	82
	Intangible assets	3,100
	Total fair value of assets acquired	4,167
	Goodwill	764
	Total consideration	$	4,931
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	'
	Estimated amortization expense related to customer relationships created as a result of the IDC acquisition for each of the years subsequent to December 31, 2013, is as follows (amounts in thousands):
	2014	$	620
	2015	620
	2016	620
	2017	620
	2018	52
	Total	$	2,532
Tinet [Member]	'
Business Acquisition [Line Items]	'
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	'
	The following table summarizes the purchase price and the assets acquired and liabilities assumed as of the acquisition date at estimated fair value:
		Amounts in
		thousands
	Purchase Price:
	Cash consideration paid	$	49,158
	Liabilities assumed
	Accounts payable	4,179
	Accrued expenses and other current liabilities	20,607
	Deferred revenue	2,443
	Total fair value of liabilities assumed	27,229
	Total consideration	$	76,387
	Purchase Price Allocation:
	Acquired assets
	Accounts receivable	$	11,601
	Prepaid expenses	1,137
	Other current assets	5,101
	Property and equipment	15,004
	Other assets	1,282
	Intangible assets	25,800
	Total fair value of assets acquired	59,925
	Goodwill	16,462
	Total consideration	$	76,387
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	'
	Estimated amortization expense related to customer relationships created as a result of the Tinet acquisition for each of the years subsequent to December 31, 2013, is as follows (amounts in thousands):
	2014	$	5,000
	2015	5,000
	2016	5,000
	2017	5,000
	2018	1,667
	Total	$	21,667
Business Acquisition, Pro Forma Information	'
	The unaudited pro forma results of operations do not reflect the cost of any integration activities or benefits that may result from synergies that may be derived from any integration activities.
		Year Ended December 31,
		2013			2012
	Amounts in thousands, except per share and share data
	Revenue	$	185,526		$	179,971
	Net loss	$	(23,920	)	$	(45,612	)
	Net loss per share:
	Basic	$	(1.09	)	$	(2.41	)
	Diluted	$	(1.09	)	$	(2.41	)
	Basic	21,985,241			18,960,347
	Diluted	21,985,241			18,960,347

GOODWILL_AND_INTANGIBLE_ASSETS1

GOODWILL AND INTANGIBLE ASSETS (Tables)	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Schedule of Goodwill	'
	The changes in the carrying amount of goodwill for the year ended December 31, 2013 are as follows (amounts in thousands):
	Balance, January 1, 2012	$	40,950
	Goodwill associated with the nLayer acquisition	7,759
	Measurement period adjustment related to the PacketExchange acquisition	744
	Goodwill associated with the Electra acquisition	340
	Balance, December 31, 2012	49,793
	Goodwill associated with the IDC acquisition	764
	Goodwill associated with the Tinet acquisition	16,462
	Balance, December 31, 2013	$	67,019
Schedule of Finite-Lived Intangible Assets	'
	The following table summarizes the Company’s intangible assets as of December 31, 2013 and December 31, 2012 (amounts in thousands):
				December 31, 2013
		Amortization		Gross Asset		Accumulated		Net Book
		Period		Cost		Amortization		Value
	Customer contracts	3-7 years		$	58,611	$	16,218	$	42,393
	Carrier contracts	1 year		151		151		—
	Noncompete agreements	3-5 years		4,331		3,906		425
	Software	7 years		4,935		4,935		—
	Trade name (non-amortizing)	N/A		800		—		800
				$	68,828	$	25,210	$	43,618
				December 31, 2012
		Amortization		Gross Asset		Accumulated		Net Book
		Period		Cost		Amortization		Value
	Customer contracts	4-7 years		$	26,471	$	6,802	$	19,669
	Carrier contracts	1 year		151		151		—
	Noncompete agreements	4-5 years		4,331		3,593		738
	Software	7 years		4,935		4,439		496
				$	35,888	$	14,985	$	20,903
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	'
	Estimated amortization expense related to intangible assets subject to amortization at December 31, 2013 in each of the years subsequent to December 31, 2013 is as follows (amounts in thousands):
	2014	$	11,883
	2015	10,539
	2016	9,629
	2017	8,054
	2018	2,713
	Total	$	42,818

FAIR_VALUE_MEASUREMENTS_Tables

FAIR VALUE MEASUREMENTS (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Inputs, Liabilities, Quantitative Information	'
	The following table presents the liabilities that are measured and recognized at fair value on a recurring basis classified under the appropriate level of the fair value hierarchy as of December 31, 2013 and 2012 (amounts in thousands):
		31-Dec-13
		Level 1			Level 2		Level 3		Total
	Liabilities:
	Warrant liability	$	—		$	—	$	12,295	$	12,295
	nLayer earn-out	—			—		2,900		2,900
		31-Dec-12
		Level 1			Level 2		Level 3		Total
	Liabilities:
	Warrant liability	$	—		$	—	$	2,288	$	2,288
	nLayer earn-out	$	—		$	—	$	6,200	$	6,200
Fair Value Liabilities Roll Forward	'
	Rollforward of level 3 liabilities are as follows (amounts in thousands):
	Warrant Liability
	Balance, January 1, 2012	$	430
	Issuance of warrants	786
	Change in fair value of warrant liability	1,072
	Balance, December 31, 2012	2,288
	Issuance of warrants	1,349
	Change in fair value of warrant liability	8,658
	Balance, December 31, 2013	$	12,295
	nLayer Earn-out
	Balance, December 31, 2012	$	6,200
	nLayer earn-out paid in cash	(3,628		)
	nLayer earn-out paid in equity	(1,650		)
	Change in the fair value of the nLayer earn-out	1,978
	Balance, December 31, 2013	$	2,900

PROPERTY_AND_EQUIPMENT_Tables

PROPERTY AND EQUIPMENT (Tables)	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Property, Plant and Equipment	'
	The following table summarizes the Company’s property and equipment at December 31, 2013 and 2012 (amounts in thousands):
		2013			2012
	Network equipment	$	30,485		$	8,710
	Computer software	3,423			3,353
	Leasehold improvements	757			744
	Furniture and fixtures	259			256
	Property and equipment, gross	34,924			13,063
	Less accumulated depreciation and amortization	(14,474		)	(7,569		)
	Property and equipment, net	$	20,450		$	5,494

ACCRUED_EXPENSES_AND_OTHER_CUR1

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2013
Payables and Accruals [Abstract]	'
Schedule of Accounts Payable and Accrued Liabilities	'
	The following table summarizes the Company’s accrued expenses and other current liabilities as of December 31, 2013 and 2012 (amounts in thousands):
		2013		2012
	Accrued compensation and benefits	$	4,257	$	1,056
	Accrued interest payable	379		610
	Accrued taxes	3,407		843
	Accrued carrier costs	13,085		3,912
	nLayer earn-out	2,900		6,200
	Accrued other	2,971		680
		$	26,999	$	13,301

INCOME_TAXES_Tables

INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Schedule of Components of Income Tax Expense (Benefit)	'
	The components of the provision for income taxes for the years ended December 31, 2013 and 2012 are as follows (amounts in thousands):
		2013				2012
	Current:
	Federal	$	—			$	219
	State	(8		)		144
	Foreign	720				279
	Subtotal	712				642
	Deferred:
	Federal	(6,000		)		(285		)
	State	(803		)		(93		)
	Foreign	1,439				(167		)
	Subtotal	(5,364		)		(545		)
	Change in valuation allowance	2,647				649
	Provision for income taxes	$	(2,005	)		$	746
Schedule of Effective Income Tax Rate Reconciliation	'
	The provision for income taxes differs from the amount computed by applying the U.S. federal statutory income tax rate to income before income taxes for the reasons set forth below for the years ended December 31, 2013 and 2012:
		2013			2012
	U.S. federal statutory income tax rate	35	%		35	%
	Permanent items	(10.23	)%		(4.26	)%
	State taxes, net of federal benefit	(0.13	)%		(13.12	)%
	Foreign tax rate differential	1.55	%		(15.79	)%
	Change in valuation allowance	(14.17	)%		(98.81	)%
	Unrecognized tax positions	(1.31	)%		—	%
	Italian IRAP tax	(1.60	)%		—	%
	Prior year AMT	0.11	%		(6.74	)%
	Return to provision adjustments	(0.29	)%		12.37	%
	Effective Tax Rate	8.93	%		(91.35	)%
Schedule of Deferred Tax Assets and Liabilities	'
	Deferred income taxes reflect the net effects of net operating loss carryforwards and the temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Significant components of the Company's deferred tax assets and liabilities at December 31, 2013 and 2012 are as follows (amounts in thousands):
			2013				2012
	Deferred tax assets:
	Net operating loss carryforwards		$	8,442			$	5,400
	Capital loss and trade deficit loss carryforwards		745				—
	Allowance for doubtful accounts		860				85
	Fixed assets		286				320
	Intangible Assets		5,585				—
	Mark to market adjustment		3,794				402
	Stock compensation		671				503
	Miscellaneous items		1,435				244
	Total deferred tax assets before valuation allowance		21,818				6,954
	Less: Valuation allowance		(19,806		)		(6,708		)
	Total deferred tax assets		2,012				246
	Deferred tax liabilities:
	Intangibles		—				780
	Miscellaneous items		239				274
	Total deferred tax liabilities		239				1,054
	Net deferred tax liability		$	(1,773	)		$	808
Schedule of Unrecognized Tax Benefits Roll Forward	'
	The following table presents a reconciliation of the beginning and ending amounts of unrecognized tax expense:
		2013				2012
	Balance, January 1	$	—			$	—
	Changes for tax positions of prior years	1,851				—
	Increases for tax positions related to the current year	—				—
	Settlements and lapsing of statues of limitations	—				—
	Balance, December 31	$	1,851			$	—

RESTRUCTURING_COSTS_EMPLOYEE_T1

RESTRUCTURING COSTS, EMPLOYEE TERMINATION AND OTHER ITEMS (Tables)	12 Months Ended
	Dec. 31, 2013
Restructuring and Related Activities [Abstract]	'
Schedule of Restructuring and Related Costs	'
	The restructuring charges and accruals established by the Company, and activities related thereto, are summarized as follows for the year ended December 31, 2013 (amounts in thousands):
		Charges Net		Cash		Total
		of Reversals		Payments
	Balance, December 31, 2012	$	—	$	—	$	—
	Employment costs	4,600		4,564		36
	Professional fees	1,565		1,246		319
	Integration expenses	1,282		891		391
	Travel and other expenses	230		221		9
	Balance, December 31, 2013	$	7,677	$	6,922	$	755

EMPLOYEE_STOCKBASED_COMPENSATI1

EMPLOYEE STOCK-BASED COMPENSATION BENEFITS (Tables)	12 Months Ended
	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	'
	Assumptions used in the calculation of the stock option expense were as follows:
			2013		2012
	Volatility		60.2% - 63.4%		61.9% - 64.0%
	Risk free rate		1.0% - 1.9%		.08% - 1.8%
	Term		6.25		6.25
	Dividend yield		—	%	—	%
Schedule of Share-based Compensation, Stock Options, Activity	'
	During the year ended December 31, 2013, 486,750 options were granted pursuant to the Plan. The following table summarizes information concerning options outstanding as of December 31, 2013:
			Options		Weighted Average		Weighted			Weighted Average	Aggregate
					Exercise Price		Average			Remaining	Intrinsic
							Fair Value			Contractual	Value
										Life (Years)
	Balance at December 31, 2012		1,395,250		$	1.49	$	0.43		7.23	$	1,834,685
	Granted		486,750		3.64		2.07			—	—
	Exercised		(92,125	)	—		—			—	279,830
	Forfeited		(92,375	)	1.03		0.56			—	594,455
	Balance at December 31, 2013		1,697,500		$	2.09	$	0.47		7.31	$	7,962,468
	Exercisable		829,913		$	4.34	$	0.93		5.81	$	4,885,047
Share Based Compensation Expenses Expected To Vest and Recognized	'
	As of December 31, 2013, the unvested portion of share-based compensation expense attributable to stock options and the period in which such expense is expected to vest and be recognized is as follows (amounts in thousands):
	2014	$	427
	2015	370
	2016	284
	2017	97
	Total	$	1,178
Schedule of Share-based Compensation, Restricted Stock Units Award Activity	'
	Following table summarizes restricted stock activity during the years ended December 31, 2013 and 2012:
			2013				2012
			Shares		Weighted		Shares		Weighted
					Average				Average
					Fair				Fair
					Value				Value
	Nonvested Balance at January 1,		660,001		$	1.66	536,125		$	1.04
	Granted		727,357		3.58		406,248		2.08
	Forfeited		(5,000	)	3.4		—		—
	Vested		(405,420	)	5.02		(282,372	)	2.38
	Nonvested Balance at December 31,		976,938		$	2.96	660,001		$	1.66

DEBT_Tables

DEBT (Tables)	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Schedule of Debt	'
	The following summarizes the debt activity of the Company during the year ended December 31, 2013 (amounts in thousands):
		Total Debt			Senior Term Loan			Line of Credit			Mezzanine Notes		Subordinated Notes			Promissory Note
	Debt obligation as of December 31, 2012	$	42,829		$	24,500		$	—		$	15,481	$	2,611		$	237
	Issuance, net of discount	83,445			65,794			6,000			11,651		—			—
	Debt discount amortization	601			—			—			578		23			—
	Payments	(31,866		)	(28,544		)	(3,000		)	—		(85		)	(237		)
	Extinguishment of debt	(2,549		)	—			—			—		(2,549		)	—
	Debt obligation as of December 31, 2013	$	92,460		$	61,750		$	3,000		$	27,710	$	—		$	—
Schedule Of Estimated Annual Commitment For Debt Maturities	'
	Estimated annual commitments for debt maturities net of unamortized discounts are as follows at December 31, 2013 (amounts in thousands):
		Total Debt
	2014	$	6,500
	2015	6,500
	2016	79,460
	Total	$	92,460

COMMITMENTS_AND_CONTINGENCIES_

COMMITMENTS AND CONTINGENCIES (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Schedule of Future Minimum Rental Payments for Operating Leases	'
	Estimated annual commitments under non-cancelable operating leases are as follows at December 31, 2013 (amounts in thousands):
		Office Space		Other
	2014	$	974	$	453
	2015	765		444
	2016	765		345
	2017	473		345
	2018	353		—
	2019 and beyond	1,410		—
		$	4,740	$	1,587
Contractual Obligation, Fiscal Year Maturity Schedule	'
	Estimated annual commitments under supplier contractual agreements are as follows at December 31, 2013 (amounts in thousands):
		Supplier
		Agreements
	2014	$	9,168
	2015	14,409
	2016	14,521
	2017	2,138
	2018	735
	2019 and beyond	5,707
		$	46,678

FOREIGN_OPERATIONS_Tables

FOREIGN OPERATIONS (Tables)	12 Months Ended
	Dec. 31, 2013
Foreign Operations [Abstract]	'
Schedule Of Revenue From External Customers And Long Lived Assets By Entity Wide Foreign Operations	'
	The Company’s operations are located primarily in the United States and Europe. The Company’s financial data by geographic area is as follows:
		US		ITALY		UK		OTHER		Total GTT
	2013
	Revenues by geographic area	$	88,995	$	39,959	$	23,481	$	4,933	$	157,368
	Long-lived assets at December 31	$	73,462	$	46,510	$	11,109	$	6	$	131,087
	2012
	Revenues by geographic area	$	82,430	$	—	$	20,648	$	4,799	$	107,877
	Long-lived assets at December 31	$	63,492	$	—	$	12,679	$	19	$	76,190

SIGNIFICANT_ACCOUNTING_POLICIE3

SIGNIFICANT ACCOUNTING POLICIES (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2012
Accounting Policies [Abstract]	'	'	'	'
Closing exchange rate at December 31	1.65	1.65	1.62	1.62
Average exchange rate during the period	1.33	1.56	1.29	1.58

SIGNIFICANT_ACCOUNTING_POLICIE4

SIGNIFICANT ACCOUNTING POLICIES (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Accounting Policies [Abstract]	'	'
Other expense, net of income	$11,724,000	$1,054,000
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Allowance for doubtful accounts receivable	700,000	700,000
Level 3 [Member] | Warranty liability [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Change in fair value	8,658,000	1,072,000
Level 3 [Member] | nLayer earn-out [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Change in fair value	$1,978,000	'

SIGNIFICANT_ACCOUNTING_POLICIE5

SIGNIFICANT ACCOUNTING POLICIES (Details Textual 1) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Shared-based compensation	$1,466,000	$610,000
Warrant liability	1,300,000	800,000
Gain (loss) on mark to market warrant liability	8,700,000	'
Warrant liability	12,295,000	2,288,000
Amortization period	'P5Y	'
Loss contingency, estimate of possible loss	7,300,000	4,100,000
Loss contingency, range of possible loss, maximum	2,300,000	1,100,000
Stock Option [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Shared-based compensation	400,000	200,000
Restricted Stock [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Shared-based compensation	$1,100,000	$400,000

SIGNIFICANT_ACCOUNTING_POLICIE6

SIGNIFICANT ACCOUNTING POLICIES (Details 1) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Accounting Policies [Abstract]	'	'
Numerator for basic and diluted EPS b loss available to common stockholders (in dollars)	($20,789)	($1,563)
Denominator for basic EPS - weighted average shares	21,985,241	18,960,347
Effect of dilutive securities	0	0
Denominator for diluted EPS - weighted average shares	21,985,241	18,960,347
Loss per share: basic (in dollars per share)	($0.95)	($0.08)
Loss per share: diluted (in dollars per share)	($0.95)	($0.08)

SIGNIFICANT_ACCOUNTING_POLICIE7

SIGNIFICANT ACCOUNTING POLICIES (Details 2)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'
Anti-dilutive items	4,042	2,807
Bia Warrant [Member]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'
Anti-dilutive items	1,055	698
Plexus Warrant [Member]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'
Anti-dilutive items	960	714
Alecentra Warrants [Member]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'
Anti-dilutive items	329	0
Stock Options [Member]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'
Anti-dilutive items	1,698	1,395

SIGNIFICANT_ACCOUNTING_POLICIE8

SIGNIFICANT ACCOUNTING POLICIES (Details 3)	12 Months Ended
	Dec. 31, 2013
Furniture and Fixtures [Member]	'
Property, Plant and Equipment [Line Items]	'
Property, Plant and Equipment, Useful Life	'7 years
Network Equipment [Member]	'
Property, Plant and Equipment [Line Items]	'
Property, Plant and Equipment, Useful Life	'5 years
Leasehold Improvements [Member] | Maximum [Member]	'
Property, Plant and Equipment [Line Items]	'
Property, Plant and Equipment, Useful Life	'10 years
Computer Hardware and Software [Member] | Maximum [Member]	'
Property, Plant and Equipment [Line Items]	'
Property, Plant and Equipment, Useful Life	'5 years
Computer Hardware and Software [Member] | Minimum [Member]	'
Property, Plant and Equipment [Line Items]	'
Property, Plant and Equipment, Useful Life	'3 years

ACQUISITIONS_Details_Textual

ACQUISITIONS (Details Textual) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Jul. 11, 2013

Feb. 01, 2013

Mar. 31, 2013

Feb. 01, 2013

Dec. 31, 2013

Mar. 31, 2013

Jun. 30, 2013

Apr. 30, 2013

Jun. 30, 2013

Apr. 30, 2013

Apr. 30, 2013

Dec. 31, 2013

Jun. 30, 2013

Apr. 30, 2013

Apr. 30, 2013

Apr. 30, 2013

Line of Credit [Member]

IDC [Member]

IDC [Member]

IDC [Member]

IDC [Member]

IDC [Member]

Tinet [Member]

Tinet [Member]

Tinet [Member]

Tinet [Member]

Tinet [Member]

Tinet [Member]

Tinet [Member]

Tinet [Member]

Tinet [Member]

Tinet [Member]

Revolving Credit Facility [Member]

facility

Customer Relationships [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Trade Names [Member]

Trade Names [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Senior Term Loan [Member]

Line of Credit [Member]

Inteliquent [Member]

client

Revolving Credit Facility [Member]

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of facilities acquired

'

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of clients acquired

'

'

'

'

100

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business acquisition, percentage of voting interests acquired

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business acquisition, cost of acquired entity, purchase price

'

'

'

'

$4,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Acquired finite-lived intangible asset, amount

'

'

'

'

'

'

3,100,000

'

3,100,000

'

'

'

'

25,000,000

'

25,000,000

'

'

'

Acquired finite-lived intangible assets, weighted average useful life

'

'

'

'

'

'

'5 years

'

'

'

'

'

'

'5 years

'

'

'

'

'

Acquired indefinite-lived intangible asset, amount

'

'

'

'

'

'

'

'

'

'

'

800,000

800,000

'

'

'

'

'

'

Amortization of acquired intangible assets

'

'

'

'

'

'

'

600,000

'

'

'

'

'

'

3,300,000

'

'

'

'

Goodwill

67,019,000

49,793,000

40,950,000

'

764,000

800,000

'

'

'

16,500,000

16,462,000

'

'

'

'

'

'

'

'

Payments to acquire businesses, gross

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

52,500,000

Contingent consideration, term of services

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'3 years

Contingent consideration, at fair value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,000,000

Debt face amount

'

'

'

$7,500,000

'

'

'

'

'

'

'

'

'

'

'

'

$65,000,000

$5,000,000

'

ACQUISITIONS_Purchase_Price_De

ACQUISITIONS (Purchase Price) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Feb. 01, 2013	Mar. 31, 2013	Apr. 30, 2013	Jun. 30, 2013
In Thousands, unless otherwise specified				IDC [Member]	IDC [Member]	Tinet [Member]	Tinet [Member]
Purchase Price:	'	'	'	'	'	'	'
Cash consideration paid	'	'	'	$3,593	'	$49,158	'
Liabilities assumed	'	'	'	'	'	'	'
Accounts payable	'	'	'	'	'	4,179	'
Accrued expenses and other current liabilities	'	'	'	'	'	20,607	'
Deferred revenue	'	'	'	'	'	2,443	'
Total fair value of liabilities assumed	'	'	'	1,338	'	27,229	'
Total consideration	'	'	'	4,931	'	76,387	'
Acquired Assets	'	'	'	'	'	'	'
Accounts receivable	'	'	'	'	'	11,601	'
Prepaid expenses	'	'	'	'	'	1,137	'
Other current assets	'	'	'	'	'	5,101	'
Current assets	'	'	'	187	'	'	'
Property and equipment	'	'	'	798	'	15,004	'
Other assets	'	'	'	82	'	1,282	'
Intangible assets	'	'	'	3,100	'	25,800	'
Total fair value of assets acquired	'	'	'	4,167	'	59,925	'
Goodwill	67,019	49,793	40,950	764	800	16,462	16,500
Total consideration	'	'	'	$4,931	'	$76,387	'

ACQUISITIONS_Estimated_Amortiz

ACQUISITIONS (Estimated Amortization Expense) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Business Acquisition [Line Items]	'	'
2014	$11,883	'
2015	10,539	'
2016	9,629	'
2017	8,054	'
2018	2,713	'
Net Book Value	42,818	20,903
IDC [Member] | Customer Relationships [Member]	'	'
Business Acquisition [Line Items]	'	'
2014	620	'
2015	620	'
2016	620	'
2017	620	'
2018	52	'
Net Book Value	2,532	'
Tinet [Member] | Customer Relationships [Member]	'	'
Business Acquisition [Line Items]	'	'
2014	5,000	'
2015	5,000	'
2016	5,000	'
2017	5,000	'
2018	1,667	'
Net Book Value	$21,667	'

ACQUISITIONS_Pro_Forma_Results

ACQUISITIONS (Pro Forma Results) (Details) (Tinet [Member], USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Tinet [Member]	'	'
Business Acquisition [Line Items]	'	'
Revenue	$185,526	$179,971
Net loss	($23,920)	($45,612)
Net loss per share, Basic (in dollars per share)	($1.09)	($2.41)
Net loss per share, Diluted (in dollars per share)	($1.09)	($2.41)
Weighted average shares outstanding, Basic (in shares)	21,985,241	18,960,347
Weighted average shares outstanding, Diluted (in shares)	21,985,241	18,960,347

GOODWILL_AND_INTANGIBLE_ASSETS2

GOODWILL AND INTANGIBLE ASSETS (Details Textual) (USD $)

12 Months Ended

3 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Mar. 31, 2013

Feb. 01, 2013

Jun. 30, 2013

Apr. 30, 2013

Jun. 30, 2013

Apr. 30, 2013

Mar. 31, 2013

Feb. 01, 2013

Jun. 30, 2013

Apr. 30, 2013

Dec. 31, 2013

IDC [Member]

IDC [Member]

Tinet [Member]

Tinet [Member]

Tinet [Member]

Tinet [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Trade Names [Member]

Trade Names [Member]

IDC [Member]

IDC [Member]

Tinet [Member]

Tinet [Member]

Novation Agreement [Member]

Schedule of Goodwill and Intangible Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill

$67,019,000

$49,793,000

$40,950,000

$800,000

$764,000

$16,500,000

$16,462,000

'

'

'

'

'

'

'

Acquired finite-lived intangible asset, amount

'

'

'

'

'

'

'

'

'

3,100,000

3,100,000

25,000,000

25,000,000

4,000,000

Finite-lived intangible assets, amortization method

'

'

'

'

'

'

'

'

'

'straight-line

'

'

'

'

Acquired indefinite-lived intangible asset, amount

'

'

'

'

'

'

'

800,000

800,000

'

'

'

'

'

Amortization of intangible assets

$10,200,000

$4,800,000

'

'

'

'

'

'

'

'

'

'

'

'

GOODWILL_AND_INTANGIBLE_ASSETS3

GOODWILL AND INTANGIBLE ASSETS (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Mar. 31, 2013

Feb. 01, 2013

Dec. 31, 2013

Jun. 30, 2013

Apr. 30, 2013

In Thousands, unless otherwise specified

nLayer [Member]

PacketExchange [Member]

Electra [Member]

IDC [Member]

IDC [Member]

IDC [Member]

Tinet [Member]

Tinet [Member]

Tinet [Member]

Goodwill [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

Beginning balance

$67,019

$49,793

$40,950

'

'

'

'

$800

$764

'

$16,500

$16,462

Goodwill associated with acquisition

'

'

'

7,759

'

340

764

'

'

16,462

'

'

Measurement period adjustment

'

'

'

'

744

'

'

'

'

'

'

'

Ending balance

$67,019

$49,793

$40,950

'

'

'

'

$800

$764

'

$16,500

$16,462

GOODWILL_AND_INTANGIBLE_ASSETS4

GOODWILL AND INTANGIBLE ASSETS (Details 1) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Schedule of Intangible Assets [Line Items]	'	'
Gross Asset Cost	'	35,888
Accumulated Amortization	25,210	14,985
Net Book Value	42,818	20,903
Gross Asset Cost	68,828	'
Net Book Value	43,618	20,903
Trade Names [Member]	'	'
Schedule of Intangible Assets [Line Items]	'	'
Trade name (non-amortizing)	800	'
Customer Contracts [Member]	'	'
Schedule of Intangible Assets [Line Items]	'	'
Gross Asset Cost	58,611	26,471
Accumulated Amortization	16,218	6,802
Net Book Value	42,393	19,669
Customer Contracts [Member] | Minimum [Member]	'	'
Schedule of Intangible Assets [Line Items]	'	'
Amortization Period	'3 years	'4 years
Customer Contracts [Member] | Maximum [Member]	'	'
Schedule of Intangible Assets [Line Items]	'	'
Amortization Period	'7 years	'7 years
Carrier Contracts [Member]	'	'
Schedule of Intangible Assets [Line Items]	'	'
Amortization Period	'1 year	'1 year
Gross Asset Cost	151	151
Accumulated Amortization	151	151
Net Book Value	0	0
Noncompete Agreements [Member]	'	'
Schedule of Intangible Assets [Line Items]	'	'
Gross Asset Cost	4,331	4,331
Accumulated Amortization	3,906	3,593
Net Book Value	425	738
Noncompete Agreements [Member] | Minimum [Member]	'	'
Schedule of Intangible Assets [Line Items]	'	'
Amortization Period	'3 years	'4 years
Noncompete Agreements [Member] | Maximum [Member]	'	'
Schedule of Intangible Assets [Line Items]	'	'
Amortization Period	'5 years	'5 years
Software [Member]	'	'
Schedule of Intangible Assets [Line Items]	'	'
Amortization Period	'7 years	'7 years
Gross Asset Cost	4,935	4,935
Accumulated Amortization	4,935	4,439
Net Book Value	0	496

GOODWILL_AND_INTANGIBLE_ASSETS5

GOODWILL AND INTANGIBLE ASSETS (Details 2) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Goodwill and Intangible Assets Disclosure [Abstract]	'	'
2014	$11,883	'
2015	10,539	'
2016	9,629	'
2017	8,054	'
2018	2,713	'
Net Book Value	$42,818	$20,903

FAIR_VALUE_MEASUREMENTS_Detail

FAIR VALUE MEASUREMENTS (Details Textual) (USD $)	12 Months Ended			12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012
		Warranty liability [Member]	Warranty liability [Member]	nLayer earn-out [Member]	nLayer earn-out [Member]	Level 3 [Member]	Level 3 [Member]	Level 3 [Member]	Level 3 [Member]	Level 3 [Member]
						Warranty liability [Member]	Warranty liability [Member]	Warranty liability [Member]	nLayer earn-out [Member]	nLayer earn-out [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'	'	'	'	'	'	'	'	'
Fair value assumptions, expected term, simplified method	'	'Black-Scholes pricing model	'	'Black-Scholes pricing model	'	'	'	'	'	'
Fair value assumptions, weighted average volatility rate	'	63.00%	'	60.00%	'	'	'	'	'	'
Fair value assumptions, expected term	'	'3 years	'	'3 months	'	'	'	'	'	'
Fair value assumptions, risk free interest rate	'	0.00%	'	0.10%	'	'	'	'	'	'
Liabilities, fair value	'	$12,295,000	$2,288,000	$2,900,000	$6,200,000	$12,295,000	$2,288,000	$430,000	$2,900,000	$6,200,000
Asset impairment charges	$0	'	'	'	'	'	'	'	'	'

FAIR_VALUE_MEASUREMENTS_Detail1

FAIR VALUE MEASUREMENTS (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Warranty liability [Member]	'	'	'
Liabilities:	'	'	'
Liabilities	$12,295	$2,288	'
nLayer earn-out [Member]	'	'	'
Liabilities:	'	'	'
Liabilities	2,900	6,200	'
Level 1 [Member] | Warranty liability [Member]	'	'	'
Liabilities:	'	'	'
Liabilities	0	0	'
Level 1 [Member] | nLayer earn-out [Member]	'	'	'
Liabilities:	'	'	'
Liabilities	0	0	'
Level 2 [Member] | Warranty liability [Member]	'	'	'
Liabilities:	'	'	'
Liabilities	0	0	'
Level 2 [Member] | nLayer earn-out [Member]	'	'	'
Liabilities:	'	'	'
Liabilities	0	0	'
Level 3 [Member] | Warranty liability [Member]	'	'	'
Liabilities:	'	'	'
Liabilities	12,295	2,288	430
Level 3 [Member] | nLayer earn-out [Member]	'	'	'
Liabilities:	'	'	'
Liabilities	$2,900	$6,200	'

FAIR_VALUE_MEASUREMENTS_Detail2

FAIR VALUE MEASUREMENTS (Details 1) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Warranty liability [Member]	'	'
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]	'	'
Balance	$12,295	$2,288
nLayer earn-out [Member]	'	'
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]	'	'
Balance	2,900	6,200
Level 3 [Member] | Warranty liability [Member]	'	'
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]	'	'
Balance	2,288	430
Issuance of warrants	1,349	786
Change in fair value	8,658	1,072
Balance	12,295	2,288
Level 3 [Member] | nLayer earn-out [Member]	'	'
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]	'	'
Balance	6,200	'
nLayer earn-out paid in cash	-3,628	'
nLayer earn-out paid in equity	-1,650	'
Change in fair value	1,978	'
Balance	$2,900	'

PROPERTY_AND_EQUIPMENT_Details

PROPERTY AND EQUIPMENT (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	$34,924	$13,063
Less accumulated depreciation and amortization	-14,474	-7,569
Property and equipment, net	20,450	5,494
Network Equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	30,485	8,710
Computer Software [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	3,423	3,353
Leasehold Improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	757	744
Furniture and Fixtures [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	$259	$256

PROPERTY_AND_EQUIPMENT_Details1

PROPERTY AND EQUIPMENT (Details Textual) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Abstract]	'	'
Depreciation expense	$6.90	$2.50

ACCRUED_EXPENSES_AND_OTHER_CUR2

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Payables and Accruals [Abstract]	'	'
Accrued compensation and benefits	$4,257	$1,056
Accrued interest payable	379	610
Accrued taxes	3,407	843
Accrued carrier costs	13,085	3,912
nLayer earn-out	2,900	6,200
Accrued other	2,971	680
Accrued Liabilities and Other Liabilities	$26,999	$13,301

INCOME_TAXES_Details

INCOME TAXES (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current:	'	'
Federal	$0	$219
State	-8	144
Foreign	720	279
Subtotal	712	642
Deferred:	'	'
Federal	-6,000	-285
State	-803	-93
Foreign	1,439	-167
Subtotal	-5,364	-545
Change in valuation allowance	2,647	649
Provision for income taxes	($2,005)	$746

INCOME_TAXES_Details_1

INCOME TAXES (Details 1)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]	'	'
U.S. federal statutory income tax rate	35.00%	35.00%
Permanent Items	-10.23%	-4.26%
State taxes, net of defined benefit	-0.13%	-13.12%
Foreign tax rate differential	1.55%	-15.79%
Change in valuation allowance	-14.17%	-98.81%
Unrecognized tax positions	-1.31%	0.00%
Italian IRAP tax	-1.60%	0.00%
Prior year AMT	0.11%	-6.74%
Return to provision adjustments	-0.29%	12.37%
Effective Tax Rate	8.93%	-91.35%

INCOME_TAXES_Details_Textual

INCOME TAXES (Details Textual) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]	'	'
Income (loss) from continuing operations before income taxes, extraordinary items, noncontrolling interest	($22.80)	$0.80
Income (loss) from continuing operations before income taxes, extraordinary items, noncontrolling interest, domestic	-23.6	0.4
Income (loss) from continuing operations before income taxes, extraordinary items, noncontrolling interest, foreign	-0.8	0.4
Operating Loss Carryforwards [Line Items]	'	'
Operating loss carryforwards	31	'
Operating loss carryforwards, future tax affected amounts to be recorded to additional paid-in capital	0.8	'
Domestic Tax Authority [Member]	'	'
Operating Loss Carryforwards [Line Items]	'	'
Operating loss carryforwards	11.7	'
Foreign Tax Authority [Member]	'	'
Operating Loss Carryforwards [Line Items]	'	'
Operating loss carryforwards	$19.30	'
Minimum [Member]	'	'
Operating Loss Carryforwards [Line Items]	'	'
Operating loss carryforwards, expiration dates	'2020	'
Maximum [Member]	'	'
Operating Loss Carryforwards [Line Items]	'	'
Operating loss carryforwards, expiration dates	'2030	'

INCOME_TAXES_Details_2

INCOME TAXES (Details 2) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Deferred tax assets:	'	'
Net operating loss carryforwards	$8,442	$5,400
Capital loss and trade deficit loss carryforwards	745	0
Allowance for doubtful accounts	860	85
Fixed assets	286	320
Intangible Assets	5,585	0
Mark to market adjustment	3,794	402
Stock compensation	671	503
Miscellaneous items	1,435	244
Total deferred tax assets before valuation allowance	21,818	6,954
Less: valuation allowance	-19,806	-6,708
Total deferred tax assets	2,012	246
Deferred tax liabilities:	'	'
Identified intangibles	0	780
Miscellaneous items	239	274
Total deferred tax liabilities	239	1,054
Net deferred tax liability	($1,773)	$808

INCOME_TAXES_Details_Textual_1

INCOME TAXES (Details Textual 1) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Valuation Allowance [Line Items]	'	'	'
Change in valuation allowance	$2,647,000	$649,000	'
Unrecognized tax benefits	1,851,000	0	0
Unrecognized tax benefits, portion established through purchase price accounting	1,500,000	'	'
Foreign Tax Authority [Member]	'	'	'
Valuation Allowance [Line Items]	'	'	'
Change in valuation allowance	$2,900,000	'	'

INCOME_TAXES_Details_3

INCOME TAXES (Details 3) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]	'	'
Balance, January 1	$0	$0
Changes for tax positions of prior years	1,851	0
Increases for tax positions related to the current year	0	0
Settlements and lapsing of statues of limitations	0	0
Balance, December 31	$1,851	$0

RESTRUCTURING_COSTS_EMPLOYEE_T2

RESTRUCTURING COSTS, EMPLOYEE TERMINATION AND OTHER ITEMS (Details Textual) (Idc and Tilnet Acquisitions [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013
Idc and Tilnet Acquisitions [Member]	'
Restructuring Cost and Reserve [Line Items]	'
Restructuring charges	$7,700

RESTRUCTURING_COSTS_EMPLOYEE_T3

RESTRUCTURING COSTS, EMPLOYEE TERMINATION AND OTHER ITEMS (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

In Thousands, unless otherwise specified

Employment costs [Member]

Professional fees [Member]

Integration expenses [Member]

Travel and other expenses [Member]

Charges Net Of Reversals [Member]

Charges Net Of Reversals [Member]

Charges Net Of Reversals [Member]

Charges Net Of Reversals [Member]

Charges Net Of Reversals [Member]

Charges Net Of Reversals [Member]

Cash Payments [Member]

Cash Payments [Member]

Cash Payments [Member]

Cash Payments [Member]

Cash Payments [Member]

Cash Payments [Member]

Employment costs [Member]

Professional fees [Member]

Integration expenses [Member]

Travel and other expenses [Member]

Employment costs [Member]

Professional fees [Member]

Integration expenses [Member]

Travel and other expenses [Member]

Restructuring Reserve [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Beginning balance

$755

$0

'

'

'

'

$7,677

$0

'

'

'

'

$6,922

$0

'

'

'

'

Restructuring charges

'

'

36

319

391

9

'

'

4,600

1,565

1,282

230

'

'

4,564

1,246

891

221

Ending balance

$755

$0

'

'

'

'

$7,677

$0

'

'

'

'

$6,922

$0

'

'

'

'

EMPLOYEE_STOCKBASED_COMPENSATI2

EMPLOYEE STOCK-BASED COMPENSATION BENEFITS (Details Textual) (USD $)

12 Months Ended

1 Months Ended

12 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Jun. 30, 2011

Oct. 31, 2006

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Restricted Stock [Member]

Restricted Stock [Member]

Employees and Consultants [Member]

Employees and Consultants [Member]

Periodic Vesting [Member]

Employee Director Consultant Stock Plan [Member]

Employee Director Consultant Stock Plan [Member]

Employee Director Consultant Stock Plan [Member]

Stock Option 25 [Member]

Stock Option 25 [Member]

Stock Option 75 [Member]

Periodic Vesting [Member]

Periodic Vesting [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

New stock issues in period (in shares)

'

'

'

'

'

'

'

3,000,000

3,500,000

'

'

'

'

Options, exercise price, percent

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

Award expiration period

'

'

'

'

'

'

'

'

'

'10 years

'

'

'

Options, vested and expected to vest, outstanding, weighted average remaining contractual term

'

'

'

'

'

'

'

'

'

'

'4 years

'

'3 years

Shared-based compensation

$1,466,000

$610,000

$1,100,000

$400,000

$400,000

$200,000

'

'

'

'

'

'

'

Options granted (in shares)

486,750

'

'

'

486,750

'

'

'

'

'

'

'

'

Options, vested, fair value

800,000

'

'

'

'

'

'

'

'

'

'

'

'

Share-based compensation expenses expected to vest and recognized

$1,178,000

'

'

'

'

'

'

'

'

'

'

'

'

Awards outstanding, weighted average remaining contractual terms

'

'

'2 years 10 months 23 days

'

'

'

'

'

'

'

'

'

'

Award vesting rights, percentage

'

'

'

'

'

'

'

'

'

'

'

25.00%

'

Percent of awards vesting after initial year

'

'

'

'

'

'

'

'

'

'

'

'

75.00%

EMPLOYEE_STOCKBASED_COMPENSATI3

EMPLOYEE STOCK-BASED COMPENSATION BENEFITS (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'	'
Volatility,Minimum	60.20%	61.90%
Volatility,Maximum	63.40%	64.00%
Risk free rate,Minimum	1.00%	0.80%
Risk free rate,Maximum	1.90%	1.80%
Term	'6 years 3 months	'6 years 3 months
Dividend yield	0.00%	0.00%

EMPLOYEE_STOCKBASED_COMPENSATI4

EMPLOYEE STOCK-BASED COMPENSATION BENEFITS (Details 1) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Options	'	'
Options, Balance at December 31, 2012 (in shares)	1,395,250	'
Options, Granted (in shares)	486,750	'
Options, Exercised (in shares)	-92,125	'
Options, Forfeited (in shares)	-92,375	'
Options, Balance at December 31, 2013 (in shares)	1,697,500	1,395,250
Options, Exercisable (in shares)	829,913	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]	'	'
Weighted Average Exercise Price, Balance at December 31, 2012	$1.49	'
Weighted Average Exercise Price, Granted	$3.64	'
Weighted Average Exercise Price, Exercised	$0	'
Weighted Average Exercise Price, Forfeited	$1.03	'
Weighted Average Exercise Price, Balance at December 31, 2013	$2.09	$1.49
Weighted Average Exercise Price, Exercisable	$4.34	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]	'	'
Weighted Average Fair Value, Granted	$2.07	'
Weighted Average Fair Value, Exercised	$0	'
Weighted Average Fair Value, Forfeited	$0.56	'
Weighted Average Fair Value, Outstanding	$0.47	$0.43
Weighted Average Fair Value, Exercisable	$0.93	'
Weighted Average Remaining Contractual Life (Years), Balance	'7 years 3 months 23 days	'7 years 2 months 23 days
Weighted Average Remaining Contractual Life (Years), Exercisable	'5 years 9 months 23 days	'
Weighted Average Aggregate Intrinsic Value, Granted (in dollars)	0	'
Weighted Average Aggregate Intrinsic Value, Exercised (in dollars)	279,830	'
Weighted Average Aggregate Intrinsic Value, Forfeited (in dollars)	594,455	'
Weighted Average Aggregate Intrinsic Value, Outstanding (in dollars)	7,962,468	1,834,685
Weighted Average Aggregate Intrinsic Value, Exercisable (in dollars)	$4,885,047	'

EMPLOYEE_STOCKBASED_COMPENSATI5

EMPLOYEE STOCK-BASED COMPENSATION BENEFITS (Details 2) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
2014	$427
2015	370
2016	284
2017	97
Total	$1,178

EMPLOYEE_STOCKBASED_COMPENSATI6

EMPLOYEE STOCK-BASED COMPENSATION BENEFITS (Details 3) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Shares	'	'
Shares, Nonvested Balance at January 1, (in shares)	660,001	536,125
Shares, Granted (in shares)	727,357	406,248
Shares, Forfeited (in shares)	-5,000	0
Shares, Vested (in shares)	-405,420	-282,372
Shares, Nonvested Balance at December 31, (in shares)	976,938	660,001
Weighted Average Fair Value	'	'
Weighted Average Fair Value, Nonvested Balance at January 1,	$1.66	$1.04
Weighted Average Fair Value, Granted	$3.58	$2.08
Weighted Average Fair Value, Forfeited	$3.40	$0
Weighted Average Fair Value, Vested	$5.02	$2.38
Weighted Average Fair Value, Nonvested Balance at December 31,	$2.96	$1.66

DEFINED_CONTRIBUTION_PLAN_Deta

DEFINED CONTRIBUTION PLAN (Details Textual) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]	'	'
Defined contribution plan, employer matching contribution, percent	40.00%	40.00%
Defined contribution plan, cost recognized	$179	$84

DEBT_Details

DEBT (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Debt [Roll Forward]	'	'
Beginning balance	$42,829	'
Issuance, net of discount	83,445	'
Debt discount amortization	601	303
Payments	-31,866	'
Extinguishment of debt	-2,549	'
Ending balance	92,460	42,829
Senior Term Loan [Member]	'	'
Debt [Roll Forward]	'	'
Beginning balance	24,500	'
Issuance, net of discount	65,794	'
Debt discount amortization	0	'
Payments	-28,544	'
Extinguishment of debt	0	'
Ending balance	61,750	'
Line of Credit [Member]	'	'
Debt [Roll Forward]	'	'
Beginning balance	0	'
Issuance, net of discount	6,000	'
Debt discount amortization	0	'
Payments	-3,000	'
Extinguishment of debt	0	'
Ending balance	3,000	'
Mezzanine Debt [Member]	'	'
Debt [Roll Forward]	'	'
Beginning balance	15,481	'
Issuance, net of discount	11,651	'
Debt discount amortization	578	'
Payments	0	'
Extinguishment of debt	0	'
Ending balance	27,710	'
Subordinated Notes [Member]	'	'
Debt [Roll Forward]	'	'
Beginning balance	2,611	'
Issuance, net of discount	0	'
Debt discount amortization	23	'
Payments	-85	'
Extinguishment of debt	-2,549	'
Ending balance	0	'
Promissory Note [Member]	'	'
Debt [Roll Forward]	'	'
Beginning balance	237	'
Issuance, net of discount	0	'
Debt discount amortization	0	'
Payments	-237	'
Extinguishment of debt	0	'
Ending balance	$0	'

DEBT_Details_1

DEBT (Details 1) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Debt Disclosure [Abstract]	'	'
2014	$6,500	'
2015	6,500	'
2016	79,460	'
Debt and Capital Lease Obligations	$92,460	$42,829

DEBT_Details_Textual

DEBT (Details Textual) (USD $)

12 Months Ended

0 Months Ended

1 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

0 Months Ended

1 Months Ended

12 Months Ended

0 Months Ended

3 Months Ended

12 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Apr. 30, 2013

Mar. 28, 2013

Apr. 30, 2013

Jun. 30, 2011

Jun. 06, 2011

Apr. 30, 2013

Apr. 30, 2012

Dec. 31, 2012

Apr. 30, 2013

Dec. 31, 2013

Apr. 30, 2013

Sep. 19, 2011

Jun. 06, 2011

Feb. 16, 2011

Jun. 06, 2011

Apr. 30, 2013

Apr. 30, 2013

Nov. 01, 2013

Oct. 31, 2013

Dec. 30, 2013

Jun. 06, 2011

Dec. 31, 2013

Dec. 30, 2013

Apr. 30, 2013

Dec. 31, 2013

Apr. 30, 2013

Sep. 19, 2011

Dec. 30, 2013

Jul. 11, 2013

Apr. 30, 2013

Dec. 30, 2013

Apr. 30, 2013

Dec. 31, 2012

Apr. 30, 2012

Apr. 30, 2013

Apr. 30, 2012

Apr. 30, 2012

Dec. 31, 2010

Feb. 08, 2010

Feb. 28, 2010

Dec. 31, 2013

Mar. 28, 2013

31-May-11

Feb. 16, 2011

Dec. 31, 2013

Dec. 31, 2013

Mar. 28, 2013

Mar. 31, 2013

Dec. 31, 2013

Jun. 06, 2011

Dec. 31, 2013

Private Offering [Member]

Private Offering [Member]

Bia Warrant [Member]

Bia Warrant [Member]

Bia Warrant [Member]

Plexus Warrant [Member]

Plexus Warrant [Member]

Plexus Warrant [Member]

BNY Warrant [Member]

Warrant [Member]

Warrant [Member]

Note [Member]

Note [Member]

Note [Member]

Note Immediately [Member]

Credit Agreement May 2012 [Member]

Amended and Restated Loan and Security Agreement June 2011 [Member]

Amended Note Purchase [Member]

Amended Note Purchase [Member]

Third Amended Note Purchase Agreement [Member]

Third Amended Note Purchase Agreement [Member]

Third Amended Note Purchase Agreement [Member]

Third Amended Note Purchase Agreement [Member]

Senior Debt [Member]

Senior Debt [Member]

Senior Debt [Member]

Line of Credit [Member]

Line of Credit [Member]

Line of Credit [Member]

Line of Credit [Member]

Line of Credit [Member]

Amended Note Purchase [Member]

Amended Note Purchase [Member]

Amended Note Purchase [Member]

Amended Note Purchase [Member]

Amended Note Purchase [Member]

Term Loan [Member]

Subordinated Notes [Member]

Subordinated Notes [Member]

Subordinated Notes [Member]

Subordinated Notes [Member]

Subordinated Notes [Member]

Subordinated Notes [Member]

Subordinated Notes [Member]

Subordinated Notes [Member]

Subordinated Notes [Member]

Subordinated Promissory Notes Due December 31, 2013 [Member]

Subordinated Promissory Notes Due December 31, 2013 [Member]

Subordinated Promissory Notes Due December 31, 2013 [Member]

Subordinated Promissory Notes Due December 31, 2013 [Member]

Subordinated Promissory Note Included In Long Term Debt [Member]

Note Immediately [Member]

Tinet [Member]

Note [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Letter of Credit [Member]

Note Immediately [Member]

Note Immediately [Member]

Related Party [Member]

Officers and Directors [Member]

Tinet [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt face amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$65,000,000

'

'

$7,500,000

$5,000,000

$4,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$700,000

'

Increase in maximum borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt portion of outstanding obligations required for replacement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt interest rate, stated percentage, minimum

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Basis spread on variable rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt interest rate at period end

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Extinguishment of debt

2,549,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

26,000,000

1,500,000

'

'

'

'

'

'

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,549,000

'

'

'

'

'

'

'

'

'

'

Maximum borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

12,500,000

'

'

'

'

'

'

38,000,000

'

'

'

'

'

'

'

'

'

'

'

11,500,000

'

8,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash consideration paid

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8,500,000

6,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt unamortized discount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt called

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt discounted during period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

400,000

400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt remaining borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Note borrower additional fund value

'

'

'

'

'

'

1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Note borrower additional fund discount value

'

'

'

'

'

'

'

'

'

'

'

'

'

45,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt face value to be called

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8,500,000

'

'

'

'

'

'

'

'

'

'

'

'

2,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt increase (decrease) for period, net

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt maturity date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6-Jun-16

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Voting equity interest pledge

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

65.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Warrants issued to purchase common stock

'

'

'

'

356,649

634,648

'

246,911

535,135

'

329,214

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock purchase price per share

'

'

$3

$3

'

'

$1.14

'

$2.21

'

'

'

$3.31

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional warrants issued to purchase common stock

'

'

'

'

'

63,225

'

'

'

178,378

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock on additional purchase price per share

'

'

'

'

'

'

$1.18

'

'

$2.54

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative liabilities

2,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain (loss) on mark to market warrant liability

-8,700,000

'

'

'

'

'

'

'

'

'

'

-8,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of credit facility, amount outstanding

'

'

'

'

'

'

'

'

'

'

'

12,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from issuance of common stock

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,200,000

2,400,000

'

'

'

'

'

'

'

'

'

'

'

'

Junior subordinated notes

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,100,000

1,500,000

'

2,700,000

2,700,000

1,400,000

200,000

2,300,000

200,000

'

'

'

'

'

Common stock waived

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

900,000

'

'

'

'

200,000

'

'

'

'

'

'

'

Subordinated notes discounted value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

200,000

'

'

'

'

300,000

'

'

'

'

'

'

'

Debt interest rate, stated percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11.00%

13.50%

11.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.00%

'

'

'

'

10.00%

'

'

'

'

'

'

'

Long-term debt, gross

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

29,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt increase in maximum borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Financing commitment, funded amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Repayments of subordinated short-term debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100,000

'

'

'

'

'

'

'

'

'

'

'

Repayment of subordinate notes payable

85,000

105,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,100,000

'

'

'

'

'

'

'

'

'

200,000

'

'

'

New stock issues in period (in shares)

'

'

783,334

2,259,617

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

982,356

'

'

'

'

Common stock share price, discount percentage

'

'

'

15.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock share price, average price measurement period

'

'

'

'30 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Subordinated promissory notes

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,600,000

'

'

'

22,000

Interest payable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

300,000

'

'

'

2,000

Gains (losses) on extinguishment of debt

($706,000)

$0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

($700,000)

'

'

CONCENTRATIONS_Details_Textual

CONCENTRATIONS (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
	customer	customer
Risks and Uncertainties [Abstract]	'	'
Cash, FDIC Insured Amount	250,000	'
Deposits	4,200,000	'
Sales Revenue, Services, Net [Member] | Customer Concentration Risk [Member]	'	'
Concentration Risk [Line Items]	'	'
Number of major customers	0	0

COMMITMENTS_AND_CONTINGENCIES_1

COMMITMENTS AND CONTINGENCIES (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Office Space [Member]	'	'
Operating Leased Assets [Line Items]	'	'
Operating leases, rent expense, net	$1,200,000	$800,000
2014	974,000	'
2015	765,000	'
2016	765,000	'
2017	473,000	'
2018	353,000	'
2019 and beyond	1,410,000	'
Operating Leases, Future Minimum Payments Due	4,740,000	'
Other [Member]	'	'
Operating Leased Assets [Line Items]	'	'
2014	453,000	'
2015	444,000	'
2016	345,000	'
2017	345,000	'
2018	0	'
2019 and beyond	0	'
Operating Leases, Future Minimum Payments Due	$1,587,000	'

COMMITMENTS_AND_CONTINGENCIES_2

COMMITMENTS AND CONTINGENCIES (Details Textual) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 20, 2013	Dec. 31, 2013
			Artel, LLC [Member]	Supplier Agreements [Member]
Commitments and Contingencies [Line Items]	'	'	'	'
Contractual obligation	'	'	'	$46,678,000
Purchase obligation	4,300,000	2,600,000	'	'
Damages awarded, value	'	'	$3,400,000	'

COMMITMENTS_AND_CONTINGENCIES_3

COMMITMENTS AND CONTINGENCIES (Details 1) (Supplier Agreements [Member], USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Supplier Agreements [Member]	'
Commitments and Contingencies [Line Items]	'
2014	$9,168
2015	14,409
2016	14,521
2017	2,138
2018	735
2019 and beyond	5,707
Contractual Obligation	$46,678

FOREIGN_OPERATIONS_Details

FOREIGN OPERATIONS (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Revenues by geographic area	$157,368	$107,877
Long-lived assets at December 31	131,087	76,190
US [Member]	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Revenues by geographic area	88,995	82,430
Long-lived assets at December 31	73,462	63,492
Italy [Member]	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Revenues by geographic area	39,959	0
Long-lived assets at December 31	46,510	0
United Kingdom [Member]	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Revenues by geographic area	23,481	20,648
Long-lived assets at December 31	11,109	12,679
Other [Member]	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Revenues by geographic area	4,933	4,799
Long-lived assets at December 31	$6	$19