Anterix (ATEX) 10-Q 10 Aug 18 2019 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Jun. 30, 2018	Aug. 01, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2,019
Document Fiscal Period Focus	Q1
Trading Symbol	pdvw
Entity Registrant Name	pdvWireless, Inc.
Entity Central Index Key	1,304,492
Current Fiscal Year End Date	--03-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		14,509,807

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
Current Assets
Cash and cash equivalents	$ 90,936	$ 98,318
Accounts receivable, net of allowance for doubtful accounts of $81 and $29	935	935
Inventory		173
Prepaid expenses and other current assets	1,251	850
Total current assets	93,122	100,276
Property and equipment	11,675	12,775
Intangible assets	106,606	106,606
Capitalized patent costs, net	194	197
Other assets	863	486
Total assets	212,460	220,340
Current liabilities
Accounts payable and accrued expenses	4,173	4,322
Accounts payable - officers	39	94
Deferred revenue	806	813
Total current liabilities	5,018	5,229
Noncurrent liabilities
Deferred revenue	4,058	4,257
Other liabilities	2,677	2,325
Total liabilities	11,753	11,811
Commitments and contingencies
Stockholders' equity
Preferred stock, $0.0001 par value per share, 10,000,000 shares authorized and no shares outstanding at June 30, 2018 and March 31, 2018
Common stock, $0.0001 par value per share, 100,000,000 shares authorized and 14,509,557 shares issued and outstanding at June 30, 2018 and 14,487,650 shares issued and outstanding at March 31, 2018	1	1
Additional paid-in capital	339,479	335,767
Accumulated deficit	(138,773)	(127,239)
Total stockholders' equity	200,707	208,529
Total liabilities and stockholders' equity	$ 212,460	$ 220,340

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
Consolidated Balance Sheets [Abstract]
Allowance for doubtful accounts	$ 81	$ 29
Preferred Stock, par value	$ 0.0001	$ 0.0001
Preferred Stock, shares authorized	10,000,000	10,000,000
Preferred Stock, shares outstanding	0	0
Common Stock, par value	$ 0.0001	$ 0.0001
Common Stock, shares authorized	100,000,000	100,000,000
Common Stock, shares issued	14,509,557	14,487,650
Common Stock, shares outstanding	14,509,557	14,487,650

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($)	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Operating revenues
Operating revenues	$ 1,872,000	$ 1,465,000
Cost of revenue
Sales and service	2,146,000	1,700,000
Gross loss	(274,000)	(235,000)
Operating expenses
General and administrative	5,568,000	4,881,000
Sales and support	1,631,000	1,686,000
Product development	637,000	552,000
Restructuring costs	3,975,000
Impairment of long-lived assets	534,000
Total operating expenses	12,345,000	7,119,000
Loss from operations	(12,619,000)	(7,354,000)
Interest expense		(1,000)
Interest income	316,000	112,000
Other income (expense)	1,000	(17,000)
Loss before income taxes	(12,302,000)	(7,260,000)
Income tax expense	0	650,000
Net loss	$ (12,302,000)	$ (7,910,000)
Net loss per common share basic and diluted	$ (0.85)	$ (0.55)
Weighted-average common shares used to compute basic and diluted net loss per share	14,481,561	14,437,986
Service [Member]
Operating revenues
Operating revenues	$ 1,348,000	$ 1,105,000
Spectrum [Member]
Operating revenues
Operating revenues	182,000	182,000
Other Revenue [Member]
Operating revenues
Operating revenues	$ 342,000	$ 178,000

Consolidated Statement of Stock

Consolidated Statement of Stockholders’ Equity/(Deficiency) - USD ($) $ in Thousands		Preferred Stock Series AA [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Total
Cumulative effect of change in accounting principle					$ 768	$ 768
Balance			$ 1	$ 335,767	(126,471)	209,297
Balance at Mar. 31, 2018			$ 1	335,767	(127,239)	208,529
Balance, Shares at Mar. 31, 2018			14,487,650
Equity based compensation	[1]			3,820		3,820
Equity based compensation, Shares	[1]		21,720
Stock option exercises				4		4
Stock option exercises, Shares			187
Shares withheld for taxes				(112)		(112)
Net loss					(12,302)	(12,302)
Balance at Jun. 30, 2018			$ 1	$ 339,479	$ (138,773)	$ 200,707
Balance, Shares at Jun. 30, 2018			14,509,557
[1]	includes restricted shares

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (12,302)	$ (7,910)
Adjustments to reconcile net loss to net cash used by operating activities
Depreciation and amortization	728	654
Non-cash compensation expense attributable to stock awards	3,820	1,089
Deferred income taxes		650
Bad debt expense	60	9
Loss on disposal of assets		17
Impairment of long-lived assets	534
Changes in operating assets and liabilities
Accounts receivable	(60)	(280)
Inventory	170	64
Prepaid expenses and other assets	(10)	260
Accounts payable and accrued expenses	(150)	(914)
Accounts payable - officers	(55)	(9)
Deferred revenue	(206)	(147)
Other liabilities	352	143
Net cash used by operating activities	(7,119)	(6,374)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of intangible assets		(1,677)
Purchases of equipment	(155)	(651)
Net cash used by investing activities	(155)	(2,328)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from stock option exercise	4	160
Payments of withholding tax on net issuance of restricted stock	(112)
Net cash (used) provided by financing activities	(108)	160
Net change in cash and cash equivalents	(7,382)	(8,542)
CASH AND CASH EQUIVALENTS
Beginning of the period	98,318	124,083
End of the period	$ 90,936	115,541
Cash paid during the period:
Taxes paid		8
Non-cash activities:
Capital expenditures included in other liabilities		$ 217

Nature of Operations

Nature of Operations	3 Months Ended
	Jun. 30, 2018
Nature of Operations [Abstract]
Nature of Operations	1. Nature of Operations  pdvWireless, Inc. (the “Company”) is a private wireless communications company focused on developing and offering its spectrum assets for the deployment of next generation network and mobile communication solutions designed to meet the needs of critical infrastructure and enterprise customers. The Company is the largest holder of licensed spectrum in the Part 90 900 MHz band (i.e., 896-901 MHz paired with 935-940 MHz) throughout the contiguous United States, plus Hawaii, Alaska and Puerto Rico. The Company’s first priority involves pursuing regulatory initiatives at the Federal Communications Commission (“FCC”) with the goal of modernizing and realigning the 900 MHz band to increase its usability and capacity, including for the future potential deployment of broadband and other advanced technologies and services. At the same time, the Company is exploring and developing network and mobile communication solutions, leveraging its spectrum to address the unmet needs of its targeted critical infrastructure and enterprise customers. For its first offering, the Company has deployed push-to-talk (“PTT”) networks and offers its Team Connect SM , which we initially branded and marketed as DispatchPlus TM , two-way radio service to businesses in seven major metropolitan market areas throughout the United States, including Atlanta, Baltimore/Washington, Chicago, Dallas, Houston, New York and Philadelphia. TeamConnect allows enterprise customers to increase the productivity of their field-based workers and the efficiency of their dispatch and call center operations. The Company is pursuing opportunities to enable additional network and mobile communication solutions for use by critical infrastructure and enterprise customers with its existing spectrum and currently available non-broadband technologies and, if the Company is successful with its FCC efforts, utilizing its spectrum assets to enable broadband and other advanced wireless service offerings. The Company was originally incorporated in California in 1997 and reincorporated in Delaware in 2014. In November 2015, the Company changed its name from Pacific DataVision, Inc. to pdvWireless, Inc. The Company maintains offices in Woodland Park, New Jersey, Reston, Virginia and San Diego, California. During the year ended March 31, 2016, the Company began offering its TeamConnect service in seven major metropolitan areas throughout the United States. The Company developed TeamConnect to address the needs of enterprises that value a tailored PTT solution addressing the management of their mobile workforce. The operation of the Company’s TeamConnect business is separate from, and not contingent on, the initiatives it is pursuing at the FCC or its other spectrum-related activities. The Company’s revenues are derived substantially from its TeamConnect and pdvConnect TM offerings. The TeamConnect service combines pdvConnect, a proprietary suite of mobile communication and workforce management applications, with advanced digital network architecture and mobile devices supplied by Motorola Solutions, Inc. and/or its subsidiaries (“Motorola”). Developed for dispatch-centric businesses, and historically offered principally to customers who utilize Tier 1 cellular networks, pdvConnect is an efficient mobile communication and workforce management solution that enables businesses to locate and communicate with their field workers and improve the documentation of work events and job status. Also built with the commercial dispatch customer in mind, Motorola’s digital network architecture allows the Company to provide reliable, instant and wide-area PTT communication services to its customers. Sales of the Company’s TeamConnect service have been slower to ramp-up than initial expectations. The Company primarily markets its TeamConnect service to customers indirectly through third-party dealers selected from Motorola’s nationwide dealer network and other select wireless dealers. The Company has historically supported its indirect sales representatives by providing them with training, marketing and advertising support from its internal sales and marketing team. The Company typically enters into contracts directly with end users of its TeamConnect communication solutions, including those introduced to it through its indirect dealer network. On June 1, 2018, the Company’s Board of Directors approved an initial plan to restructure its business aimed at reducing the future operating costs of its TeamConnect and pdvConnect businesses and better aligning and focusing its business priorities on its spectrum initiatives. The Company also recently announced that it had received information from one of its Tier 1 carrier partners that the largest customer of its pdvConnect service planned to discontinue its use of that service during Fiscal 2019. As a result of the loss of this significant customer and its implementation of the restructuring plan and the related measures taken to reduce the operating costs of our TeamConnect and pdvConnect businesses, principally in the sales and marketing areas, we expect that our operating revenues from these businesses will decline in future reporting periods. 

Restatement of Previously Issue

Restatement of Previously Issued Financial Statements	3 Months Ended
	Jun. 30, 2018
Restatement of Previously Issued Financial Statements [Abstract]
Restatement of Previously Issued Financial Statements	2. Restatement of Previously Issued Financial Statements In connection with preparing this Form 10-Q, the Company determined that it incorrectly interpreted the effective date of changes in the accounting treatment of its net operating losses (“NOLs”) in accordance with the new tax provisions in the Tax Cuts and Jobs Act of 2017, which was signed into law on December 22, 2017 (the “TCJA”). The TCJA, among other items: (i) increased the NOL carryforward period from 20-years to an indefinite carryforward period and (ii) limited the percentage of NOLs that may be used to offset taxable income to 80%. Under the TCJA, the 80% limitation applies to NOLs arising in taxable years “ beginning after” December 31, 2017, which for the Company would be its fiscal year commencing on April 1, 2018 and ending on March 31, 2019 (“ Fiscal 2019 ”). The TCJA, however, provides that the indefinite carryforward period applies to NOLs arising in taxable years “ ending after ” December 31, 2017, which for the Company would be its fiscal year beginning on April 1, 2017 and ending on March 31, 2018 (“ Fiscal 2018 ”). Based on these dates, NOLs generated by the Company during Fiscal 2018 would both (i) not be subject to the 80% limitation and (ii) have an indefinite life. In preparing its financial statements for the quarterly period ended December 31, 2017 and the year ended March 31, 2018, the Company, in consultation with its third-party tax firm, determined that it was unlikely that Congress intended to provide this double benefit to the NOLs generated by the Company during Fiscal 2018. As a result, the Company determined that an appropriate approach would be to continue to limit the carryforward period for its 2018 NOLs to 20 years, rather than apply an indefinite life to these NOLs. Based on its review of available accounting literature in connection with preparing its financial statements for the quarter ended June 30, 2018, the Company determined that it should apply the accounting changes implemented by the TCJA in accordance with the effective dates set forth in the TCJA. Specifically, the Company determined that, based on the current language of the TCJA, the correct accounting treatment for the NOLs it generated during Fiscal 2018 is to apply an indefinite life to those NOLs. Applying an indefinite life to the NOLs the Company generated during Fiscal 2018 enables the Company to utilize an increased amount of NOLs to offset the deferred tax liability created by the Company’s amortization of its indefinite-lived intangibles. The Company determined that it should recognize an additional deferred tax benefit of $5.6 million for the three months ended December 31, 2017 and $6.0 million for the fiscal year ended March 31, 2018. The Company determined that these changes had a material impact on the previously filed financial statements for the quarter ended December 31, 2017 and the fiscal year ended March 31, 2018. As a result, on August 9, 2018, the Company filed an amended Quarterly Report on Form 10-Q/A for the quarter ended December 31, 2017 and an amended Annual Report on Form 10-K/A for the year ended March 31, 2018, with restated financial statements and information for these periods. This Form 10-Q reflects the restated financial statements and information filed by the Company with the SEC on August 9, 2018 in its amended Quarterly and Annual Reports.

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Jun. 30, 2018
Summary of Significant Accounting Policies [Abstract]
Summary of Significant Accounting Policies	3. Summary of Significant Accounting Policies Basis of Presentation and Use of Estimates The unaudited consolidated financial statements and accompanying notes are prepared in accordance with accounting principles generally accepted in the United States of America (“US GAAP”) for interim financial information. Pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”), certain information and footnote disclosures normally included in annual consolidated financial statements prepared in accordance with US GAAP have been condensed or omitted. Because certain information and footnote disclosures have been condensed or omitted, these unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes in the Company’s amended Annual Report on Form 10-K/A for the fiscal year ended March 31, 2018 as filed on August 9, 2018 with the SEC. In the Company’s opinion all normal and recurring adjustments considered necessary for a fair presentation of the financial position, results of operations and cash flows for the periods presented have been included. The Company believes that the disclosures made in the unaudited consolidated interim financial statements are adequate to make the information not misleading. The results of operations for the interim periods presented are not necessarily indicative of the results for the year. The accompanying consolidated financial statements include the accounts of the Company and its subsidiaries, including PDV Spectrum Holding Company, LLC formed in April 2014. All significant intercompany accounts and transactions have been eliminated in consolidation.   Use of Estimates Management may be required 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 financial statements and the reported amounts of revenues and expenses during the reporting period. The most significant estimates relate to allowance for doubtful accounts, estimated useful lives of depreciable assets, asset retirement obligations, the carrying amount of long-lived assets under construction in process, valuation allowance on the Company’s deferred tax assets, and recoverability of intangible assets. Moreover, in certain circumstances, requirements associated with relevant US GAAP guidance can impact the Company’s estimates and assumptions. The Company is also required to make certain estimates with regard to the valuation of awards and forfeiture rates for its share-based award programs. Estimates and assumptions are reviewed periodically and the effects of revisions are reflected in the financial statements in the applicable period. Accordingly, actual results could materially differ from those estimates. Reclassifications Certain prior year amounts have been reclassified to conform to the presentation of the corresponding amounts in the financial statements for the three months ended June 30, 2018. These reclassifications had no effect on previously reported results of operations, cash flows, assets, liabilities or equity for the periods presented. Cash and Cash Equivalents All highly liquid investments with maturities of three months or less at the time of purchase are considered cash equivalents. Cash equivalents are stated at cost, which approximates the quoted market value and include amounts held in money market funds. Intangible Assets Intangible assets are wireless licenses that will be used to provide the Company with the exclusive right to utilize designated radio frequency spectrum to provide wireless communication services. While licenses are issued for only a fixed time, generally ten years, such licenses are subject to renewal by the FCC. License renewals have occurred routinely and at nominal cost in the past. There are currently no legal, regulatory, contractual, competitive, economic or other factors that limit the useful life of the Company’s wireless licenses. As a result, the Company has determined that the wireless licenses should be treated as an indefinite-lived intangible asset. The Company will evaluate the useful life determination for its wireless licenses each year to determine whether events and circumstances continue to support their treatment as an indefinite useful life asset. The licenses are tested for impairment annually on an aggregate basis, as the Company will be utilizing the wireless licenses on an integrated basis as a part of developing its nationwide network. Before employing detailed impairment testing, the Company first evaluates the likelihood of impairment by considering relevant qualitative factors that may have a significant bearing on fair value. If it determines that it is more likely than not that the wireless licenses are impaired, it will apply a quantitative analysis including detailed testing methodologies. Otherwise, it concludes that no impairment exists. In the event a quantitative analysis is required, the Company considers estimates of valuation methods to perform the test of the fair values of the wireless licenses using, among other things, market based and discounted cash flow approaches. Long-Lived Asset Impairment The Company evaluates long-lived assets, other than intangible assets with indefinite lives, for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset group may not be recoverable. Asset groups are determined at the lowest level for which identifiable cash flows are largely independent of cash flows of other groups of assets and liabilities. When the carrying amount of a long-lived asset group is not recoverable and exceeds its fair value, an impairment loss is recognized equal to the excess of the asset group’s carrying value over the estimated fair value. I ncome Taxes The Company utilizes the asset and liability method of accounting for income taxes. Under this method, deferred tax assets and liabilities are recognized for the expected future tax consequences of temporary differences between the carrying amounts and the tax bases of assets and liabilities as well as from net operating loss and tax credit carryforwards. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in operations in the period that includes the enactment date. A valuation allowance is established when it is estimated that it is more likely than not that the tax benefit of a deferred tax asset will not be realized. Revenue Recognition Revenues are recognized when a contract with a customer exists and control of the promised goods or services is transferred to the Company’s customers, in an amount that reflects the consideration it expects to be entitled to in exchange for those goods or services and the identified performance obligation has been satisfied. A performance obligation is a promise in a contract to transfer a distinct good or service to the customer and is the unit of account in Accounting Standard Codification (“ASC”), 606, Revenue from Contracts with Customers, (“ASC 606”) . A contract’s transaction price is allocated to each distinct performance obligation and is recognized as revenue when, or as, the performance obligation is satisfied, which typically occurs when the services are rendered. Determining whether products and services are considered distinct performance obligations that should be accounted for separately versus together may require significant judgment. The Company’s contracts with customers may include multiple performance obligations. For such arrangements, the Company allocates revenue to each performance obligation based on its relative standalone selling price. It generally determines standalone selling prices based on the prices charged to customers under contracts involving only the relevant performance obligation. Judgment may be used to determine the standalone selling prices for items that are not sold separately, including services provided at no additional charge. Most of our performance obligations are satisfied at over time as services are provided. The Company recognizes an asset for the incremental costs of obtaining a contract with a customer if it expects the benefit of those costs to be longer than one year. The Company has determined that certain sales commissions meet the requirements to be capitalized and have been recorded as an asset upon the Company’s adoption of ASC 606. Stock Compensation The Company accounts for stock options in accordance with US GAAP, which requires the measurement and recognition of compensation expense, based on the estimated fair value of awards granted to employees, directors, and consultants. The Company estimates the fair value of share-based 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 in the Company’s statements of operations over the requisite service periods. In the event the participant’s employment by or engagement with (as a director or otherwise) the Company terminates before exercise of the options granted, the stock options granted to the participant shall immediately expire and all rights to purchase shares thereunder shall immediately cease and expire and be of no further force or effect, other than applicable exercise rights for vested shares that may extend past the termination date as provided for in the participant’s applicable option award agreement. Additionally, the Compensation Committee adopted an Executive Severance Plan (the “Severance Plan”) in February 2015, and the Company subsequently entered into Severance Plan Participation Agreements with its executive officers and certain key employees. In addition to providing participants with severance payments, the Severance Plan provides for accelerated vesting and extends the exercise period for outstanding equity awards if the Company terminates a participant’s service for reasons other than cause, death or disability or the participant terminates his or her service for good reason, whether before or after a change of control (each of such terms as defined in the Severance Plan). To calculate option-based compensation, the Company uses the Black-Scholes option-pricing model. The Company’s determination of fair value of option-based awards on the date of grant using the Black-Scholes model is affected by assumptions regarding a number of subjective variables. The fair value of restricted stock, restricted stock units and performance units are measured based upon the quoted closing market price for the stock on the date of grant. The compensation cost for the restricted stock and restricted stock units is recognized on a straight-line basis over the vesting period. The compensation cost for the performance units is recognized when the performance criteria are complete. No tax benefits have been attributed to the share-based compensation expense because the Company maintains a full valuation allowance for all net deferred tax assets. Net Loss Per Share of Common Stock Basic net loss per common share is calculated by dividing the net loss attributable to common stockholders by the weighted-average number of common shares outstanding during the period, without consideration for potentially dilutive securities. For purposes of the diluted net loss per share calculation, preferred stock, stock options, restricted stock and warrants are considered to be potentially dilutive securities. Because the Company has reported a net loss for the three months ended June 30, 2018 and 2017, diluted net loss per common share is the same as basic net loss per common share for those periods. Common stock equivalents resulting from potentially dilutive securities approximated 1,095,000 and 1,002,000 at June 30, 2018 and March 31, 2018, respectively, and have not been included in the dilutive weighted average shares of common stock outstanding, as their effects are anti-dilutive. Recently Issued Accounting Pronouncements In February 2016, the Financial Accounting Standards Board, (“FASB”) issued Accounting Standards Update (“ASU”) 2016-02, Leases . The ASU amends a number of aspects of lease accounting, including requiring lessees to recognize operating leases with a term greater than one year on their balance sheet as a right-of-use asset and corresponding lease liability, measured at the present value of the lease pa yments. The ASU also requires disclosure of key information about leasing arrangements to increase the transparency and comparability among organizations. The accounting for lessors does not fundamentally change except for changes to conform and align guidance to the lessee guidance as well as to the new revenue recognition guidance in ASU 2014-09. The amendments in this ASU are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. ASU 2016-02 requires reporting organizations to take a modified retrospective transition approach (as opposed to a full retrospective transition approach). The Company decided not to early adopt the ASU. The Company is evaluating the potential impact that ASU 2016-02 may have on its consolidated financial statements. In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other: Simplifying the Test for Goodwill Impairment. ASU 2017-04 eliminated Step 2 from the goodwill impairment test, which required entities to compute the implied fair value of goodwill by determining the fair value of the reporting unit's assets and liabilities as if they were assets acquired and liabilities assumed in a business combination. Instead of Step 2, entities performing their annual impairment test will recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value. Entities will continue to have the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. The adoption of ASU 2017-04 will be effective for annual, or any interim, goodwill impairment tests in fiscal years beginning after December 15, 2019. The adoption of this guidance is not expected to have an effect on the Company’s consolidated financial statements. Other accounting standards that have been issued or proposed by the FASB or other standard-setting bodies that do not require adoption until a future date are not expected to have a material impact on the Company’s consolidated financial statements upon adoption. Recently Adopted Accounting Pronouncements In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (“ASC 606”), which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers, and also requires enhanced disclosures regarding the nature, amount, timing and uncertainty of revenues and cash flows from contracts with customers. ASC 606 replaced most existing revenue recognition guidance in U.S. GAAP. The new standard was effective for the Company on April 1, 2018. The standard permits the use of either the full retrospective or modified retrospective transition method. The Company adopted ASC 606 using the modified retrospective transition method on April 1, 2018 and applied the standard to all of its customer contracts that are not considered completed as of the adoption date. See Note 3 – Revenue for further discussion, including the impact on the Company’s consolidated financial statements and required disclosures. In May 2017, the FASB issued ASU 2017-09, Compensation - Stock Compensation (Topic 718) Scope of Modification Accounting . The amendments in ASU 2017-09 provide guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. The adoption of ASU 2017-09 became effective for annual periods beginning after December 15, 2017 with prospective application. The Company adopted this standard on April 1, 2018. The adoption of this standard has not had a material impact on the Company’s condensed consolidated financial statements or related disclosures. 

Revenue

Revenue	3 Months Ended
	Jun. 30, 2018
Revenue [Abstract]
Revenue	4. Revenue In May 2014, the FASB issued ASU No. 2014-09 , Revenue from Contracts with Customers, which amended the FASB Accounting Standards Codification (“ASC”) and created a new ASC Topic 606, Revenue from Contracts with Customers (“ASC 606”). On April 1, 2018, the Company adopted ASC 606 using the modified retrospective method and recognized the cumulative effect of initially applying the guidance as an adjustment to the opening balance of retained deficit. The Company applied the new revenue standard to new and existing contracts that were not complete as of the date of initial application. As a result of applying this standard using the modified retrospective method, the Company has presented financial results and applied its accounting policies for the period beginning April 1, 2018 under ASC 606, while prior period results and accounting policies have not been adjusted and are reflected under legacy GAAP pursuant to ASC 605. As a result of adopting ASC 606, on April 1, 2018, the Company recorded a reduction of $0.8 million to its accumulated deficit. The most significant drivers of the adjustment included the Company’s change in accounting policy related to the deferral of costs to obtain a contract. The Company is required to capitalize certain contract acquisition costs that relate directly to a customer contract, and recognize such costs as an asset, including commissions paid to its sales team and indirect dealers, and to amortize these costs on a straight-line basis over the customer’s estimated contract period, which is an average of 24 months. The Company previously expensed these contract acquisition costs as incurred in selling, general and administrative expenses. Management assesses these costs and the related asset carrying value for impairment on a quarterly basis. In accordance with ASC 606, when the customer purchases or receives a discounted handset in connection with entering into a contract for service, the Company allocates revenue between the handset and the service based on the relative standalone selling price. Revenue is recognized when the performance obligation which includes providing the services or transferring control of promised handsets, which are distinct to a customer has been satisfied. Revenue is recognized in an amount that reflects the consideration the Company expects to be entitled to for those performance obligations. The cumulative effect of the changes made to the Company’s consolidated April 1, 2018 balance sheet for the adoption of ASC 606 were as follows:    Balance at March 31, Adjustments due to Balance at April 1,  2018 ASC 606 2018  Assets  Prepaid expenses and other current assets $ 850 $ 473 $ 1,323  Other assets 486 295 781  Liabilities  Deferred revenue, short-term and long-term $ 5,070 $ — $ 5,070  Stockholders' Equity  Accumulated deficit (127,239) 768 (126,471)  Service Revenue . The Company derives its service revenue from a fixed monthly recurring unit price per user, with 30-day payment terms, for its pdvConnect, TeamConnect and Diga-talk service offerings. pdvConnect is the Company’s proprietary cloud-based mobile resource management solution which is sold as a separate software-as-a-service offering for dispatch-centric business customers who utilize Tier 1 cellular networks, and to a lesser extent, who utilize land mobile radio networks not operated by the Company. pdvConnect is sold directly by the Company or through two Tier 1 domestic carriers. The service is contracted and billed on a month to month basis and the Company satisfies its performance obligation over time as the services are delivered. TeamConnect combines pdvConnect with the Company’s push-to-talk (“PTT”) mobile communication services involving digital network architecture and mobile devices. TeamConnect gives customers the ability to instantly set up PTT communications and delivers real-time information from mobile workers to dispatch operators. It also allows customers to deliver voice messages to any computer (via the internet), any email address or to any phone in the United States as well as to communicate in real time with TeamConnect enabled smartphones on any cellular carrier network. The contract period for the TeamConnect service varies from a month to month basis to 24 months. The customer is billed at the beginning of each month of the contract term. The Company recognizes satisfies its performance obligation over time as the services are delivered. Diga-talk is a mobile communications offering that is being resold by the Company and that provides nationwide two-way digital communication services. The service is contracted and billed on a month to month basis. The Company launched the offering in March 2018 and is a reseller of the services and related devices. The determination was made that the Company is the principal in this reseller arrangement since the customer views the Company as fulfilling the performance obligations and therefore, records revenue on a gross basis over time upon delivery of the services. Spectrum Revenue. In September 2014, Motorola paid the Company an upfront, fully-paid fee of $7.5 million in order to use a portion of the Company’s wireless spectrum licenses. The payment of the fee is accounted for as deferred revenue on the Company’s c onsolidated b alance s heets and is recognized ratably i n accordance with ASC 606 over the contractual term of approximately ten years . The revenue recognized for the three months ended June 30, 2018 and June 30, 2017 was approximately $182,000. Other Revenue. The Company derives other revenue primarily from either the sale of radios and accessories for TeamConnect and Diga-talk as well as the rental of radios for TeamConnect based on 30-day payment terms. The Company recognize s radio and accessory revenue when a customer takes possession of the device . For TeamConnect, when the customer purchases a radio offered at a discounted price bundled with services or is provided a discount by the dealer which is paid for by the Company, the Company allocate s a portion of our future service billings to the radio and recognize s revenue upon handset delivery at the inception of the contract, which results in a contract asset that is amortized as a reduction to service revenue over the expected term of the customer relationship, which is typically 24 months. For Diga-talk, the customer contract is month to month. As a result, when the customer purchases a radio offered at a discounted price bundled with services, the discount for the radio is taken in the first month. Contract Assets. Contract assets include the portion of the Company’s future service invoices which has been allocated to the discounted price of the radios and amortized as a reduction against service revenue over the contract period. As of June 30, 2018 and April 1, 2018, the Company had $0.2 million in total contract assets, of which $0.1 million was classified as a component of prepaid expenses and other current assets in our condensed consolidated balances sheets for both periods. The amortization of the contract asset for the three months ended June 30, 2018 was not significant. The Company also recognizes a contract asset for the incremental costs of obtaining a contract with a customer. These costs include commissions for sales people and commissions paid to third-party dealers. These costs are amortized ratably using the portfolio approach over the estimated customer contract period. Under the previous accounting standard, the Company expensed commissions as incurred. As of June 30, 2018 and April 1, 2018, the Company had $0.7 million of deferred costs in both periods related to expenses required to obtain or fulfill a contract. Of these total deferred costs, as of June 30, 2018 and April 1, 2018, $0. 5 million were recorded as a component of prepaid and other current assets. In addition, the Company recorded $0.1 million resulting from the amortization of its contract assets during the three months ended June 30, 2018 in selling, general and administrative expenses in its condensed consolidated statement of operations. The following table presents the activity for the Company’s contract assets (in thousands):     Balance as of April 1, 2018 $ 768  Additions 163  Amortization (155)  Impairment (12)  Balance as of June 30, 2018 $ 764  Contract liabilities . Contract liabilities primarily relate to advance consideration received from customers for spectrum services, for which revenue is recognized over time, as the services are performed. These contract liabilities are recorded as deferred revenue on the balance sheet. The related liability as of March 31, 2018 of $4.3 million has been reduced by revenue recognized in the three months ended June 30, 2018 of $0.2 million leaving a remaining liability of $4.1 million as of June 30, 2018. Adoption Impact. The following table is a comparison of the reported results of operations for the three months ended June 30, 2018 compared to the amounts that would have been reported had the Company not adopted ASC 606 (in thousands):     Impact on change in accounting policy   As reported June 30, Impact of Legacy GAAP June  2018 ASC 606 30, 2018  Service revenue $ 1,348 $ 24 $ 1,372  Spectrum revenue 182 — 182  Other revenue 342 (4) 338  Sales and support 1,631 16 1,647  Net (loss)/income (12,302) 4 (12,298)  Net loss per common share basic and diluted $ (0.85) $ 0.00 $ (0.85)   The following table is a comparison of certain consolidated balance sheet captions under ASC 606 to the balance sheet results using the historical accounting method:     Impact on change in accounting policy   As reported June 30, Impact of Legacy GAAP June  2018 ASC 606 30, 2018  Prepaid and other current assets $ 1,251 $ (494) $ 757  Other assets 863 (270) 593  Deferred revenue, short-term and long-term $ 4,864 $ — $ 4,864  Accumulated deficit (138,773) 764 (138,009)  

Property and Equipment

Property and Equipment	3 Months Ended
	Jun. 30, 2018
Property and Equipment [Abstract]
Property and Equipment	 5 . Property and E quipment Property and equipment consist s of the following at June 30 , 201 8 and March 31, 201 8 (in thousands) :        Estimated June 30, March 31,  useful life 2018 2018  Network sites and equipment 5 -10 years $ 15,410 $ 15,263  Computer equipment 5 -7 years 170 184  Computer software 1 -3 years 12 10  Furniture and fixture and other equipment 2 -5 years 1,279 1,418  Leasehold improvements Shorter of the lease term or 10 years 354 344  17,225 17,219  Less accumulated depreciation 6,083 5,468  11,142 11,751  Construction in process 533 1,024  Property and equipment, net $ 11,675 $ 12,775  Depreciation expense for the three months ended June 30 , 201 8 a mounted to $0.7 million . For the three months ended June 3 0, 2017, depreciation expense was approximately $0.6 million . For the three months ended June 3 0, 2018 and 2017, depreciation expense was primarily classified as cost of revenue in the Company’s Consolidated Statements of Operations. During the three months ended June 30, 2018, the Company recorded a $0.7 million non-cash charge for long-lived asset impairment of its radio assets to reduce the carrying value to the estimated recoverable amount. Leasehold improvements include certain allowances for tenant improvements related to the expansion of the Company’s corporate headquarters. Construction in process includes the expenditures related to the costs to establish the Company’s dedicated wide-area, two-way radio dispatch network s in certain metropolitan areas.

Intangible Assets

Intangible Assets	3 Months Ended
	Jun. 30, 2018
Intangible Assets [Abstract]
Intangible Assets	 6. Intangible Assets Wireless licenses are considered indefinite-lived intangible assets. Indefinite-lived intangible assets are not subject to amortization but instead are tested for impairment annually, or more frequently if an event indicates that the asset might be impaired. The Company believes that no impairment indicators existed as of June 30, 2018 for which the Company would recognize impairment. Intangible assets consist of the following at June 30, 2018 and March 31, 2018 (in thousands):      Wireless Licenses  Balance at March 31, 2018 $ 106,606  Acquisitions —  Balance at June 30, 2018 $ 106,606   

Accounts Payable - Officers

Accounts Payable - Officers	3 Months Ended
	Jun. 30, 2018
Accounts Payable - Officers [Abstract]
Accounts Payable - Officers	7 . Accounts Payable - officers Accounts payable - officers represents unreimbursed expenses including travel and entertainment expenses incurred by the Company’s officers. At June 30, 2018 and March 31, 201 8 , the accounts payable to officers amounted to approximately $39,000 and $94,000 , respec tively.

Note Payable

Note Payable	3 Months Ended
	Jun. 30, 2018
Note Payable [Abstract]
Note Payable	 8. Note Payable  On October 23, 2015, the Company entered into a promissory note in the amount of $1,289,013 with a third party in exchange for wirele ss licenses. The term of the note was through March 15, 2018 and b ore a fixed rate of interest, of 0.55% per annum, which wa s based on the Short Term Applicable Federal Rate on the closing date. The note payable was paid in full as of March 31, 2018. 

Impairment and Restructuring Ch

Impairment and Restructuring Charges	3 Months Ended
	Jun. 30, 2018
Impairment and Restructuring Charges [Abstract]
Impairment and Restructuring Charges	9. Impairment and Restructuring Charges  Long-lived Asset Impairment. During the three months ended June 30, 2018, the Company reviewed assets designated for its TeamConnect business. As a result of the Company’s shift to better align and focus its business priorities on its spectrum initiatives, it determined that the carrying value of radios and related accessories were not fully recoverable. As a result, the Company recorded a non-cash asset impairment charge of $0.5 million to reduce the carrying value of these assets to zero. Restructuring Charges. In April 2018, the Company announced a shift in its focus and resources in order to pursue the regulatory initiatives at the FCC and prepare for the future deployment of broadband and other advanced technologies and services. In light of this shift in focus, the Board of Directors also approved a chief executive officer transition plan, under which, John Pescatore, the Company’s chief executive officer and president, transitioned to the position of vice chairman and Morgan O’Brien, the Company’s then-current vice chairman, assumed the position as the new chief executive officer. In connection with the transition, the Company and Mr. Pescatore entered into a Continued Service, Consulting and Transition Agreement and a separate Consulting Agreement. In the quarter ended June 30, 2018, we recorded a liability of $0.9 million and an additional $0.9 million will be recorded in the three months ending September 30, 2018 for the cash payments under both the Transition and Consulting Agreements. These payments will be made over twenty-four months beginning October 2018. In addition, the Company recorded a non-cash $2.8 million charge for stock compensation expense due to modifications of Mr. Pescatore’s stock grants. On June 1, 2018, the Company’s Board of Directors approved an initial plan to restructure its business aimed at reducing the operating costs of its TeamConnect and pdvConnect businesses and better aligning and focusing its business priorities on its spectrum initiatives. As part of the restructuring plan, the Company eliminated approximately 20 positions, or 20% of its workforce, primarily from its TeamConnect and pdvConnect businesses. As a result, the Company recorded a restructuring charge in the three months ended June 30, 2018 of approximately $0.3 million, related to employee severance and benefit costs. Total restructuring costs of $3.9 million on the consolidated statement of operations consists of $2.8 million stock compensation expense, $0.9 million for the Continued Service, Consulting and Transition Agreement, and $0.3 million for severance, which is expected to be paid by September 30, 2018. As of June 30, 2018, total accrued restructuring charges were as follows (in thousands):    Balance at March 31, 2018 $ —  Severance costs 292  Consulting costs 917  Cash payments —  Balance at June 30, 2018 $ 1,209 

Income Taxes

Income Taxes	3 Months Ended
	Jun. 30, 2018
Income Taxes [Abstract]
Income Taxes	10 . Income Taxes On December 22, 2017, the U.S. government enacted a comprehensive tax legislation, commonly referred to as the U.S. Tax Cuts and Jobs Act (the “Act”). For tax years ending after December 31, 2017, the Company can consider indefinite lived assets and the associated deferred tax liability as a source of future taxable income when assessing the potential to realize future tax deductions from indefinite carryforwards of net operating losses and interest expense. Thus, the deferred tax liability from the indefinite lived intangibles is offset fully by the deferred tax assets, specifically the net operating losses that do not expire . As a result, the Company recorded no income tax expense for the three months ended June 30, 2018. For the three months ended June 30, 2017, the Company recorded $0.6 million in income tax expense. The Company’s tax provision for this period had an unusual relationship to the pre-tax loss from continuing operations due primarily to the existence of a full deferred tax asset valuation allowance at the beginning of the period ending June 30, 2017. The tax expense recorded in the three months ended June 30, 2017 resulted from $1.8 million of tax amortization of the Company’s indefinite-lived intangible assets ( $0.6 million net of tax) that was not available to offset existing deferred tax assets under the law prior to the Act. In May 2018, the Company received notice from the Internal Revenue Service that it would be auditing the Company’s tax return for the period ended March 31, 2016. The audit began at the end of June 2018 and is on-going. 

Stock Acquisition Rights, Stock

Stock Acquisition Rights, Stock Options and Warrants	3 Months Ended
	Jun. 30, 2018
Stock Acquisition Rights, Stock Options and Warrants [Abstract]
Stock Acquisition Rights, Stock Options and Warrants	11. Stock Acquisition Rights, Stock Options and Warrants The Company established the pdvWireless, Inc. 2014 Stock Plan (the “2014 Stock Plan”) to attract, retain and reward individuals who contribute to the growth of the Company. This 2014 Stock Plan superseded previous stock plans . However, under such previous plans, 42,766 stock options remained vested and outstanding a s of June 30, 2018 . The Company’s Board of Directors has reserved 3,511,695 shares of common stock for issuance under its 2014 Stock Plan as of June 30, 2018. The number of shares will continue to automatically increase each January 1 st through January 1, 2024 by an amount equal to the lesser of (i) 5% of the number of shares of common stock issued and outstanding on the immediately preceding December 31 or (ii) a lesser amount determined by the Board of Directors. Restricted Stock and Restricted Stock Units A summary of non-vested restricted stock activity for the three months ended June 30, 2018 is as follows:    Weighted  Restricted Average Grant  Stock Date Fair Value  Non-vested restricted stock outstanding at March 31, 2018 217,813 $ 24.69  Granted 3,167 28.20  Forfeited (4,563) (25.96)  Vested (28,670) (22.51)  Non-vested restricted stock outstanding at June 30, 2018 187,747 $ 25.05 The Company recognizes compensation expense for restricted stock on a straight-line basis over the explicit vesting period. Vested restricted stock units are settled and issuable upon the earlier of the d ate the employee ceases to be an employee of the Company or a date certain in the future. Stock compensation expense related to restricted stock was approximately $1.2 million for the three months ended June 30, 2018 and approximately $0.4 million for the three months ended June 30, 2017 . Based on the transition and consulting agreement entered into by the Company and its Chief Executive Officer and President on April 23, 2018, the Company determined that 27,819 of restricted stock units should be accounted for as a Type III modification, (the award was not probable to vest prior to the modification but is probable of vesting under the modified condition). The expense recorded for this modification was approximately $0.7 million in the three months ended June 30, 2018. Stock compensation expense of $0.5 million for restricted stock is accounted f or in general and administrative expense and $0.7 million for the Type III modification is recorded in restructuring costs in the Company’s Consolidated Statement of Operations. At June 30, 2018 , there was $3.8 million of unvested compensation expense related to the restricted stock, which is expected to be recognized over a weighted average period of 2.5 yea rs . Performance Stock Units A summary of the performance stock unit activity for the three months ended June 30, 2018 is as follows:     Weighted  Average  Performance Grant Date  Stock Fair Value  Performance stock outstanding at March 31, 2018 109,138 $ 23.80  Granted — —  Forfeited — —  Vested — —  Performance stock outstanding at June 30, 2018 109,138 $ 23.80 The performance stock units represent the number of shares of the Company’s common stock that the recipient would receive upon the Company’s attainment of t he applicable performance goal . The units will vest in full upon attainment of the performance goals. P erformance is based upon achievement, prior to January 13, 2020, of (A ) a Final Order from the FCC providing for the creation and allocation of licenses for spectrum in the 900 MHz band consisting of paired blocks of contiguous spectrum, each containing at least 3 MHz of contiguous spectrum, authorized for broadband wir eless communications uses and (B ) the lack of objection by the Company's Board of Directors to the terms and conditions (including, but not limited to, the rebanding, clearing and relocation procedures, license assignment and award mechanisms, and technical and operational rules) set forth or referenced in the Final Order. For the three months en d ed June 30, 2018 and 2017, there was no stock compensation expense recognized for the performance units. At June 30, 2018 , there was appro ximately $2.6 million of u nvested compensation expense related to the outstanding performance stock units. Stock Options A summary of stock option activity for the three months ended June 30, 2018 is as follows:     Weighted  Average  Options Exercise Price  Options outstanding at March 31, 2018 1,968,374 $ 23.11  Granted during the period 112,000 28.20  Exercised during the period (187) (21.70)  Forfeited/Expired during the period (13,127) (26.34)  Options outstanding at June 30, 2018 2,067,060 $ 23.37  The stock options to purchase shares of common stock awarded to the Company employees during the three months ended June 30, 2018 have a ten - year contractual life. Of the 112,000 stock options to purchase shares of common stock in the three months ended June 30, 2018, 100,000 stock options were granted to the President and 12,000 stock options were granted to employees. For the stock options granted to employees, they will vest 25% on the first anniversary of grant, and the remainder will vest in three equal annual installments thereafter . The stock option to purchase 100,000 shares of common stock awarded to the Company’s President vests 50% on the second anniversary of grant and 25% each in two annual installments. Shares granted to employees are subject to vesting, future settlement conditions and other such terms as determined by the Board of Directors and set forth in the applicable award agreements. Additional information regarding stock options outstanding at June 30, 2018 is as follows:     Weighted  Weighted Average  Average Weighted Exercise Price  Exercise Number Remaining Average Options of Shares  Prices Outstanding Life in Years Exercise Price Exercisable Exercisable  $ 13.25 - $ 20.00 1,126,878 5.66 $ 19.75 1,097,253 $ 19.74  20.01 - 46.23 859,631 8.02 25.82 377,503 25.57  46.24 - 72.85 80,551 6.84 47.87 60,488 47.88  2,067,060 6.68 $ 23.37 1,535,244 $ 22.28  The Black-Scholes option model requires weighted average assumptions to be used for calculation of the Company’s stock compensation e xpense. The assumptions used during the three months ended June 30, 2018 were: the expected life of the awards was 5 years; the risk-free interest rate was 2.5 % ; the expected volatility was 49.71% ; the expected dividend yield was 0.0% ; and the expected forfeiture rate was 3% . Performance Stock Options A summary of the performance stock o ptions as of June 30, 2018 is as follows:      Performance Options Weighted Average Exercise Price  Performance options outstanding at March 31, 2018 179,945 $ 25.83  Performance options granted — —  Performance options forfeited/expired — —  Performance options outstanding at June 30, 2018 179,945 $ 25.83 The performance options will vest in full immediately upon attainment of the performance goals. Performance is based upon the Company’s achievement, prior to January 13, 2020, of ( A ) a Final Order from the FCC providing for the creation and allocation of licenses for spectrum in the 900 MHz band consisting of paired blocks of contiguous spectrum, each containing at least 3 MHz of contiguous spectrum, authorized for broadband wireless communications uses and ( B ) the lack of objection by the Company's Board of Directors to the terms and conditions (including, but not limited to, the rebandi ng, clearing and relocation procedures, license assignment and award mechanisms, and technical and operational rules) set forth or referenced in the Final Order. Stock compensation expense related to the amortization of the fair value of stock options (other than the performance stock options) issued was approximately $2.7 million for the three months ended June 30, 2018, which include $2.1 million of expense related to the modification of option grants held by the Company’s former Chief Executive Officer and President. For the three months ended June 30, 2017 , the comparable stock compensation expense was approximately $0.7 million. Th ere was no stock compensation expense related to the performance stock options issued for the three months ended June 30, 2018 and 2017 . Based on the transition and consulting agreement entered into by the Company and its Chief Executive Officer and President on April 23, 2018, the Company determined that 325,319 exercisable stock options were a Type I modification (which does not change the expectation that the award will ultimately vest resulting from an increase in the term to exercise the options). This resulted in approximately $1.7 million of stock compensation expense in the three months ended June 30, 2018. In addition, 37,500 stock options held by the Company’s former Chief Executive and President were determined to be a Type III modification. This modification resulted in $0.4 million of stock based compensation expense in the three months ended June 30, 2018. Stock compensation expense of $0.6 million is included as part of general and administrative expense and $2.1 million is included in restructuring costs in the accompanying Consolidated Statement of Operations. The weighted average fair value for the stock option awards granted during the three months ended June 30, 2018 was $13.06 . As of June 30, 2018 , there was approximately $5.4 million of unrecognized compensation cost related to non-vested s tock options granted under the Company’s stock option plans, of which $3.4 million pertains to the non-performance based stock options which is expected to be recognized over a weighted-average period of 3.1 years. Motorola Investment On September 15, 2014, Motorola invested $10.0 million to purchase 500,000 Class B Units of the Company’s subsidiary, PDV Spectrum Holding Company, LLC (at a price equal to $20.00 per unit). The Company owns 100% of the Class A Units in this subsidiary. Motorola has the right at any time to convert its 500,000 Class B Units into 500,000 shares of the Company’s common stock. The Company also has the right to force Motorola’s conversion of these Class B Units into shares of its common stock at its election. Motorola is not entitled to any assets, profits or distributions from the operations of the subsidiary. In addition, Motorola’s conversion ratio from Class B Units to shares of the Company’s common stock is fixed on a one -for-one basis, and is not dependent on the performance or valuation of either the Company or the subsidiary. The Class B Units have no redemption or call provisions and can only be converted into shares of the Company’s common stock. Management has determined that this investment does not meet the criteria for temporary equity or non-controlling interest due to the limited rights that Motorola has as a holder of Class B Units, and accordingly has presented this investment as part of its permanent equity within Additional Paid-in Capital in the accompanying consolidated financial statements.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Jun. 30, 2018
Commitments and Contingencies [Abstract]
Commitments and Contingencies	 12. Commitments and Contingencies Leasing Obligations The Company is obligated under certain lease agreements for office space with lease terms expiring on various dates from January 7, 2019 through March 31, 2027 , which includes a ten -year lease extension for its corporate headquarters. The Company entered into multiple lease agreements for tower space related to its TeamConnect business. The lease expiration dates range from February 28, 2020 to June 30, 2026 . Rent expense amounted to approximately $0.7 million for the three months ended June 30, 2018, of which approximately $0.5 million, was classified as cost of revenue and the remainder of approximately $0.2 million was classified in operating expenses in the Consolidated Statements of Operations. Total rent expense amounted to approximately $0.6 million, for the three months ended June 30, 2017, of which approximately $0.4 million, was classified as cost of revenue and the remainder of approximately $0.2 million, was classified in operating expenses in the Consolidated Statements of Operations. At June 30, 2018, accumulated deferred rent payable amounted to approximately $2.2 million and is included as part of other liabilities in the accompanying Consolidated Balance Sheet. Aggregate rentals, under non-cancelable leases for office and tower space (exclusive of real estate taxes, utilities, maintenance and other costs borne by the Company), for the remaining terms of the leases following the three months ended June 30, 2018 are as follows (in thousands):     2019 (9 months) $ 1,699  2020 2,149  2021 1,854  2022 1,495  2023 1,314  After 2023 3,986  Total $ 12,497 Liti gation The Company is not involved in any material legal proceedings at this time. However, from time to time, the Company may be involved in litigation that arises from the ordinary operations of the business, such as contractual or employment disputes or other general actions. In the event of an adverse outcome of these proceedings, the Company believes the resulting liabilities would not have a material adverse effect on its financial condition or results of operations.

Concentrations of Credit Risk

Concentrations of Credit Risk	3 Months Ended
	Jun. 30, 2018
Concentrations of Credit Risk [Abstract]
Concentrations of Credit Risk	13. Concentrations of Credit Risk Financial instruments that potentially expose the Company to concentrations of credit risk consist primarily of cash and cash equivalents and trade accounts receivable. The Company places its cash and temporary cash investments with financial institutions for which credit loss is not anticipated. The Company sells its current software applications product and extends credit predominately through two domestic third-party carriers. The Company maintains allowances for doubtful accounts based on factors surrounding the write-off history, historical trends, and other information.

Business Concentrations

Business Concentrations	3 Months Ended
	Jun. 30, 2018
Business Concentrations [Abstract]
Business Concentrations	1 4 . Business Concentrations For the three months ended June 30, 2018, the Company had one Tier 1 domestic carrier that accounted for approximately 33% of operating revenues. For the three months ended June 30, 2017, the Company had one Tier 1 carrier that accounted for approximately 40% of operating revenues. As of June 30, 2018, and March 31, 2018, the Company had one Tier 1 domestic carrier that accounted for approximately 52% and 53% , respectively, of accounts receivable.

Summary of Significant Accoun21

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Jun. 30, 2018
Summary of Significant Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation and Use of Estimates The unaudited consolidated financial statements and accompanying notes are prepared in accordance with accounting principles generally accepted in the United States of America (“US GAAP”) for interim financial information. Pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”), certain information and footnote disclosures normally included in annual consolidated financial statements prepared in accordance with US GAAP have been condensed or omitted. Because certain information and footnote disclosures have been condensed or omitted, these unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes in the Company’s amended Annual Report on Form 10-K/A for the fiscal year ended March 31, 2018 as filed on August 9, 2018 with the SEC. In the Company’s opinion all normal and recurring adjustments considered necessary for a fair presentation of the financial position, results of operations and cash flows for the periods presented have been included. The Company believes that the disclosures made in the unaudited consolidated interim financial statements are adequate to make the information not misleading. The results of operations for the interim periods presented are not necessarily indicative of the results for the year. The accompanying consolidated financial statements include the accounts of the Company and its subsidiaries, including PDV Spectrum Holding Company, LLC formed in April 2014. All significant intercompany accounts and transactions have been eliminated in consolidation. 
Use of Estimates	  Use of Estimates Management may be required 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 financial statements and the reported amounts of revenues and expenses during the reporting period. The most significant estimates relate to allowance for doubtful accounts, estimated useful lives of depreciable assets, asset retirement obligations, the carrying amount of long-lived assets under construction in process, valuation allowance on the Company’s deferred tax assets, and recoverability of intangible assets. Moreover, in certain circumstances, requirements associated with relevant US GAAP guidance can impact the Company’s estimates and assumptions. The Company is also required to make certain estimates with regard to the valuation of awards and forfeiture rates for its share-based award programs. Estimates and assumptions are reviewed periodically and the effects of revisions are reflected in the financial statements in the applicable period. Accordingly, actual results could materially differ from those estimates.
Reclassifications	Reclassifications Certain prior year amounts have been reclassified to conform to the presentation of the corresponding amounts in the financial statements for the three months ended June 30, 2018. These reclassifications had no effect on previously reported results of operations, cash flows, assets, liabilities or equity for the periods presented.
Cash and Cash Equivalents	Cash and Cash Equivalents All highly liquid investments with maturities of three months or less at the time of purchase are considered cash equivalents. Cash equivalents are stated at cost, which approximates the quoted market value and include amounts held in money market funds.
Intangible Assets	Intangible Assets Intangible assets are wireless licenses that will be used to provide the Company with the exclusive right to utilize designated radio frequency spectrum to provide wireless communication services. While licenses are issued for only a fixed time, generally ten years, such licenses are subject to renewal by the FCC. License renewals have occurred routinely and at nominal cost in the past. There are currently no legal, regulatory, contractual, competitive, economic or other factors that limit the useful life of the Company’s wireless licenses. As a result, the Company has determined that the wireless licenses should be treated as an indefinite-lived intangible asset. The Company will evaluate the useful life determination for its wireless licenses each year to determine whether events and circumstances continue to support their treatment as an indefinite useful life asset. The licenses are tested for impairment annually on an aggregate basis, as the Company will be utilizing the wireless licenses on an integrated basis as a part of developing its nationwide network. Before employing detailed impairment testing, the Company first evaluates the likelihood of impairment by considering relevant qualitative factors that may have a significant bearing on fair value. If it determines that it is more likely than not that the wireless licenses are impaired, it will apply a quantitative analysis including detailed testing methodologies. Otherwise, it concludes that no impairment exists. In the event a quantitative analysis is required, the Company considers estimates of valuation methods to perform the test of the fair values of the wireless licenses using, among other things, market based and discounted cash flow approaches.
Long-Lived Asset Impairment	Long-Lived Asset Impairment The Company evaluates long-lived assets, other than intangible assets with indefinite lives, for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset group may not be recoverable. Asset groups are determined at the lowest level for which identifiable cash flows are largely independent of cash flows of other groups of assets and liabilities. When the carrying amount of a long-lived asset group is not recoverable and exceeds its fair value, an impairment loss is recognized equal to the excess of the asset group’s carrying value over the estimated fair value.
Income Taxes	Income Taxes The Company utilizes the asset and liability method of accounting for income taxes. Under this method, deferred tax assets and liabilities are recognized for the expected future tax consequences of temporary differences between the carrying amounts and the tax bases of assets and liabilities as well as from net operating loss and tax credit carryforwards. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in operations in the period that includes the enactment date. A valuation allowance is established when it is estimated that it is more likely than not that the tax benefit of a deferred tax asset will not be realized.
Revenue Recognition	Revenue Recognition Revenues are recognized when a contract with a customer exists and control of the promised goods or services is transferred to the Company’s customers, in an amount that reflects the consideration it expects to be entitled to in exchange for those goods or services and the identified performance obligation has been satisfied. A performance obligation is a promise in a contract to transfer a distinct good or service to the customer and is the unit of account in Accounting Standard Codification (“ASC”), 606, Revenue from Contracts with Customers, (“ASC 606”) . A contract’s transaction price is allocated to each distinct performance obligation and is recognized as revenue when, or as, the performance obligation is satisfied, which typically occurs when the services are rendered. Determining whether products and services are considered distinct performance obligations that should be accounted for separately versus together may require significant judgment. The Company’s contracts with customers may include multiple performance obligations. For such arrangements, the Company allocates revenue to each performance obligation based on its relative standalone selling price. It generally determines standalone selling prices based on the prices charged to customers under contracts involving only the relevant performance obligation. Judgment may be used to determine the standalone selling prices for items that are not sold separately, including services provided at no additional charge. Most of our performance obligations are satisfied at over time as services are provided. The Company recognizes an asset for the incremental costs of obtaining a contract with a customer if it expects the benefit of those costs to be longer than one year. The Company has determined that certain sales commissions meet the requirements to be capitalized and have been recorded as an asset upon the Company’s adoption of ASC 606.
Stock Compensation	Stock Compensation The Company accounts for stock options in accordance with US GAAP, which requires the measurement and recognition of compensation expense, based on the estimated fair value of awards granted to employees, directors, and consultants. The Company estimates the fair value of share-based 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 in the Company’s statements of operations over the requisite service periods. In the event the participant’s employment by or engagement with (as a director or otherwise) the Company terminates before exercise of the options granted, the stock options granted to the participant shall immediately expire and all rights to purchase shares thereunder shall immediately cease and expire and be of no further force or effect, other than applicable exercise rights for vested shares that may extend past the termination date as provided for in the participant’s applicable option award agreement. Additionally, the Compensation Committee adopted an Executive Severance Plan (the “Severance Plan”) in February 2015, and the Company subsequently entered into Severance Plan Participation Agreements with its executive officers and certain key employees. In addition to providing participants with severance payments, the Severance Plan provides for accelerated vesting and extends the exercise period for outstanding equity awards if the Company terminates a participant’s service for reasons other than cause, death or disability or the participant terminates his or her service for good reason, whether before or after a change of control (each of such terms as defined in the Severance Plan). To calculate option-based compensation, the Company uses the Black-Scholes option-pricing model. The Company’s determination of fair value of option-based awards on the date of grant using the Black-Scholes model is affected by assumptions regarding a number of subjective variables. The fair value of restricted stock, restricted stock units and performance units are measured based upon the quoted closing market price for the stock on the date of grant. The compensation cost for the restricted stock and restricted stock units is recognized on a straight-line basis over the vesting period. The compensation cost for the performance units is recognized when the performance criteria are complete. No tax benefits have been attributed to the share-based compensation expense because the Company maintains a full valuation allowance for all net deferred tax assets.
Net Loss Per Share of Common Stock	Net Loss Per Share of Common Stock Basic net loss per common share is calculated by dividing the net loss attributable to common stockholders by the weighted-average number of common shares outstanding during the period, without consideration for potentially dilutive securities. For purposes of the diluted net loss per share calculation, preferred stock, stock options, restricted stock and warrants are considered to be potentially dilutive securities. Because the Company has reported a net loss for the three months ended June 30, 2018 and 2017, diluted net loss per common share is the same as basic net loss per common share for those periods. Common stock equivalents resulting from potentially dilutive securities approximated 1,095,000 and 1,002,000 at June 30, 2018 and March 31, 2018, respectively, and have not been included in the dilutive weighted average shares of common stock outstanding, as their effects are anti-dilutive.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In February 2016, the Financial Accounting Standards Board, (“FASB”) issued Accounting Standards Update (“ASU”) 2016-02, Leases . The ASU amends a number of aspects of lease accounting, including requiring lessees to recognize operating leases with a term greater than one year on their balance sheet as a right-of-use asset and corresponding lease liability, measured at the present value of the lease pa yments. The ASU also requires disclosure of key information about leasing arrangements to increase the transparency and comparability among organizations. The accounting for lessors does not fundamentally change except for changes to conform and align guidance to the lessee guidance as well as to the new revenue recognition guidance in ASU 2014-09. The amendments in this ASU are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. ASU 2016-02 requires reporting organizations to take a modified retrospective transition approach (as opposed to a full retrospective transition approach). The Company decided not to early adopt the ASU. The Company is evaluating the potential impact that ASU 2016-02 may have on its consolidated financial statements. In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other: Simplifying the Test for Goodwill Impairment. ASU 2017-04 eliminated Step 2 from the goodwill impairment test, which required entities to compute the implied fair value of goodwill by determining the fair value of the reporting unit's assets and liabilities as if they were assets acquired and liabilities assumed in a business combination. Instead of Step 2, entities performing their annual impairment test will recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value. Entities will continue to have the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. The adoption of ASU 2017-04 will be effective for annual, or any interim, goodwill impairment tests in fiscal years beginning after December 15, 2019. The adoption of this guidance is not expected to have an effect on the Company’s consolidated financial statements. Other accounting standards that have been issued or proposed by the FASB or other standard-setting bodies that do not require adoption until a future date are not expected to have a material impact on the Company’s consolidated financial statements upon adoption. Recently Adopted Accounting Pronouncements In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (“ASC 606”), which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers, and also requires enhanced disclosures regarding the nature, amount, timing and uncertainty of revenues and cash flows from contracts with customers. ASC 606 replaced most existing revenue recognition guidance in U.S. GAAP. The new standard was effective for the Company on April 1, 2018. The standard permits the use of either the full retrospective or modified retrospective transition method. The Company adopted ASC 606 using the modified retrospective transition method on April 1, 2018 and applied the standard to all of its customer contracts that are not considered completed as of the adoption date. See Note 3 – Revenue for further discussion, including the impact on the Company’s consolidated financial statements and required disclosures. In May 2017, the FASB issued ASU 2017-09, Compensation - Stock Compensation (Topic 718) Scope of Modification Accounting . The amendments in ASU 2017-09 provide guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. The adoption of ASU 2017-09 became effective for annual periods beginning after December 15, 2017 with prospective application. The Company adopted this standard on April 1, 2018. The adoption of this standard has not had a material impact on the Company’s condensed consolidated financial statements or related disclosures.

Revenue (Tables)

Revenue (Tables)	3 Months Ended
	Jun. 30, 2018
Revenue [Abstract]
Schedule of Adoption Impact	  Balance at March 31, Adjustments due to Balance at April 1,  2018 ASC 606 2018 Assets Prepaid expenses and other current assets $ 850 $ 473 $ 1,323 Other assets 486 295 781 Liabilities Deferred revenue, short-term and long-term $ 5,070 $ — $ 5,070 Stockholders' Equity Accumulated deficit (127,239) 768 (126,471)     Impact on change in accounting policy   As reported June 30, Impact of Legacy GAAP June  2018 ASC 606 30, 2018 Service revenue $ 1,348 $ 24 $ 1,372 Spectrum revenue 182 — 182 Other revenue 342 (4) 338 Sales and support 1,631 16 1,647 Net (loss)/income (12,302) 4 (12,298) Net loss per common share basic and diluted $ (0.85) $ 0.00 $ (0.85)     Impact on change in accounting policy   As reported June 30, Impact of Legacy GAAP June  2018 ASC 606 30, 2018 Prepaid and other current assets $ 1,251 $ (494) $ 757 Other assets 863 (270) 593 Deferred revenue, short-term and long-term $ 4,864 $ — $ 4,864 Accumulated deficit (138,773) 764 (138,009)  
Schedule of Contract Assets	  Balance as of April 1, 2018 $ 768  Additions 163  Amortization (155)  Impairment (12)  Balance as of June 30, 2018 $ 764 

Property and Equipment (Tables)

Property and Equipment (Tables)	3 Months Ended
	Jun. 30, 2018
Property and Equipment [Abstract]
Components of Property and Equipment	   Estimated June 30, March 31,  useful life 2018 2018  Network sites and equipment 5 -10 years $ 15,410 $ 15,263  Computer equipment 5 -7 years 170 184  Computer software 1 -3 years 12 10  Furniture and fixture and other equipment 2 -5 years 1,279 1,418  Leasehold improvements Shorter of the lease term or 10 years 354 344  17,225 17,219  Less accumulated depreciation 6,083 5,468  11,142 11,751  Construction in process 533 1,024  Property and equipment, net $ 11,675 $ 12,775 

Intangible Assets (Tables)

Intangible Assets (Tables)	3 Months Ended
	Jun. 30, 2018
Intangible Assets [Abstract]
Schedule of Indefinite-Lived Intangible Assets	  Wireless Licenses  Balance at March 31, 2018 $ 106,606  Acquisitions —  Balance at June 30, 2018 $ 106,606  

Impairment and Restructuring 25

Impairment and Restructuring Charges (Tables)	3 Months Ended
	Jun. 30, 2018
Impairment and Restructuring Charges [Abstract]
Schedule of Accrued Restructuring Charges	  Balance at March 31, 2018 $ —  Severance costs 292  Consulting costs 917  Cash payments —  Balance at June 30, 2018 $ 1,209 

Stock Acquisition Rights, Sto26

Stock Acquisition Rights, Stock Options and Warrants (Tables)	3 Months Ended
	Jun. 30, 2018
Stock Acquisition Rights, Stock Options and Warrants [Abstract]
Summary of Restricted Stock and Restricted Stock Units Activity	  Weighted  Restricted Average Grant  Stock Date Fair Value  Non-vested restricted stock outstanding at March 31, 2018 217,813 $ 24.69  Granted 3,167 28.20  Forfeited (4,563) (25.96)  Vested (28,670) (22.51)  Non-vested restricted stock outstanding at June 30, 2018 187,747 $ 25.05 
Summary of Performance Stock Activity	   Weighted  Average  Performance Grant Date  Stock Fair Value  Performance stock outstanding at March 31, 2018 109,138 $ 23.80  Granted — —  Forfeited — —  Vested — —  Performance stock outstanding at June 30, 2018 109,138 $ 23.80 
Summary of Stock Option Activity	   Weighted  Average  Options Exercise Price  Options outstanding at March 31, 2018 1,968,374 $ 23.11  Granted during the period 112,000 28.20  Exercised during the period (187) (21.70)  Forfeited/Expired during the period (13,127) (26.34)  Options outstanding at June 30, 2018 2,067,060 $ 23.37 
Schedule of Additional Information Regarding Stock Options Outstanding	  Weighted  Weighted Average  Average Weighted Exercise Price  Exercise Number Remaining Average Options of Shares  Prices Outstanding Life in Years Exercise Price Exercisable Exercisable  $ 13.25 - $ 20.00 1,126,878 5.66 $ 19.75 1,097,253 $ 19.74  20.01 - 46.23 859,631 8.02 25.82 377,503 25.57  46.24 - 72.85 80,551 6.84 47.87 60,488 47.88  2,067,060 6.68 $ 23.37 1,535,244 $ 22.28 
Summary of Performance Stock Options	  Performance Options Weighted Average Exercise Price  Performance options outstanding at March 31, 2018 179,945 $ 25.83  Performance options granted — —  Performance options forfeited/expired — —  Performance options outstanding at June 30, 2018 179,945 $ 25.83 

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Jun. 30, 2018
Commitments and Contingencies [Abstract]
Aggregate Rentals Under Non-cancelable Leases For Office And Plant Space	    2019 (9 months) $ 1,699  2020 2,149  2021 1,854  2022 1,495  2023 1,314  After 2023 3,986  Total $ 12,497 

Nature of Operations (Details)

Nature of Operations (Details)	3 Months Ended
	Jun. 30, 2018item
Nature of Operations [Abstract]
Metropolitan market areas	7

Restatement of Previously Iss29

Restatement of Previously Issued Financial Statements (Details) - USD ($)	3 Months Ended			12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Mar. 31, 2018
Restatement of Previously Issued Financial Statements [Abstract]
Income tax (benefit) expense	$ 0	$ 5,600,000	$ 650,000	$ 6,000,000

Summary of Significant Accoun30

Summary of Significant Accounting Policies (Details) - USD ($)	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Summary of Significant Accounting Policies [Abstract]
Wireless licenses term	10 years
Tax benefits attributed to share-based compensation expense	$ 0
Potentially dilutive securities outstanding but excluded from computation of earnings per share	1,095,000	1,002,000

Revenue (Narrative) (Details)

Revenue (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2014
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accumulated deficit	$ (138,773)	$ (127,239)
Deferred revenue, short-term and long-term	4,864	5,070	$ 7,500
Contract assets	200	200
Prepaid expenses	100	100
Deferred costs	700	700
Prepaid expenses and other current assets	1,251	850
Selling, general and administrative expenses	100
Impact of ASC 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accumulated deficit	764	768
Prepaid expenses and other current assets	(494)	473
Spectrum [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred revenue, short-term and long-term	$ 4,100	$ 4,300

Revenue (Schedule of Adoption I

Revenue (Schedule of Adoption Impact) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018	Sep. 30, 2014
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	$ 1,872	$ 1,465
Sales and support	1,631	1,686
Net (loss)/income	$ (12,302)	$ (7,910)
Net loss per common share basic and diluted	$ (0.85)	$ (0.55)
Prepaid expenses and other current assets	$ 1,251		$ 850
Other assets	863		486
Deferred revenue, short-term and long-term	4,864		5,070	$ 7,500
Accumulated deficit	(138,773)		(127,239)
Impact of ASC 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Sales and support	16
Net (loss)/income	$ 4
Net loss per common share basic and diluted	$ 0
Prepaid expenses and other current assets	$ (494)		473
Other assets	(270)		295
Accumulated deficit	764		768
Legacy GAAP [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Sales and support	1,647
Net (loss)/income	$ (12,298)
Net loss per common share basic and diluted	$ (0.85)
Prepaid expenses and other current assets	$ 757		1,323
Other assets	593		781
Deferred revenue, short-term and long-term	4,864		5,070
Accumulated deficit	(138,009)		(126,471)
Service [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	1,348	$ 1,105
Service [Member] | Impact of ASC 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	24
Service [Member] | Legacy GAAP [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	1,372
Spectrum [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	182	182
Deferred revenue, short-term and long-term	4,100		$ 4,300
Spectrum [Member] | Legacy GAAP [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	182
Other Revenue [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	342	$ 178
Other Revenue [Member] | Impact of ASC 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	(4)
Other Revenue [Member] | Legacy GAAP [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	$ 338

Revenue (Schedule of Contract A

Revenue (Schedule of Contract Assets) (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2018USD ($)
Revenue [Abstract]
Balance	$ 768
Additions	163
Amortization	(155)
Impairment	(12)
Balance	$ 764

Property and Equipment (Narrati

Property and Equipment (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Property and Equipment [Abstract]
Depreciation	$ 700	$ 600
Impairment of long-lived assets	$ 534

Property and Equipment (Compone

Property and Equipment (Components of Property and Equipment) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 17,225	$ 17,219
Less accumulated depreciation	6,083	5,468
Property and equipment, net before construction work in progress	11,142	11,751
Construction in process	533	1,024
Property and equipment, net	11,675	12,775
Network Sites and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 15,410	15,263
Network Sites and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life	5 years
Network Sites and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life	10 years
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 170	184
Computer Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life	5 years
Computer Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life	7 years
Computer Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 12	10
Computer Software [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life	1 year
Computer Software [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life	3 years
Furniture and Fixture and Other Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,279	1,418
Furniture and Fixture and Other Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life	2 years
Furniture and Fixture and Other Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life	5 years
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 354	$ 344
Leasehold Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life	10 years

Intangible Assets (Details)

Intangible Assets (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2018USD ($)
Intangible Assets [Abstract]
Balance	$ 106,606
Acquisitions
Balance	$ 106,606

Accounts Payable - Officers (De

Accounts Payable - Officers (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
Accounts Payable - Officers [Abstract]
Accounts payable - officers	$ 39	$ 94

Note Payable (Details)

Note Payable (Details) - Promissory note [Member] - USD ($)	3 Months Ended
	Jun. 30, 2018	Oct. 23, 2015
Line of Credit Facility [Line Items]
Debt instrument, amount		$ 1,289,013
Debt instrument, maturity	Mar. 15, 2018
Debt instrument, interest rate		0.55%

Impairment and Restructuring 39

Impairment and Restructuring Charges (Narrative) (Details) $ in Thousands	Jun. 01, 2018employee	Jun. 30, 2018USD ($)
Impairment and Restructuring Charges [Abstract]
Impairment of long-lived assets		$ 534
Positions eliminated | employee	20
Percentage of positions eliminated	20.00%
Severance costs		292
Restructuring costs		3,975
Stock compensation expense		2,800
Consulting costs		917
Restructuring charges incurred		900
Expected restructuring charges		$ 900

Impairment and Restructuring 40

Impairment and Restructuring Charges (Schedule of Accrued Restructuring Charges) (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2018USD ($)
Impairment and Restructuring Charges [Abstract]
Balance
Severance costs	292
Consulting costs	917
Cash payments
Balance	$ 1,209

Income Taxes (Details)

Income Taxes (Details) - USD ($)	3 Months Ended			12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Mar. 31, 2018
Income Taxes [Abstract]
Income tax (benefit) expense	$ 0	$ 5,600,000	$ 650,000	$ 6,000,000
Amortization expense			1,800,000
Amortization expense, net of tax			$ 600,000

Stock Acquisition Rights, Sto42

Stock Acquisition Rights, Stock Options and Warrants (Narrative) (Details)	Sep. 15, 2014USD ($)$ / sharesshares	Jun. 30, 2018USD ($)$ / sharesitemshares	Jun. 30, 2017USD ($)	Jun. 30, 2016USD ($)	Mar. 31, 2018shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Subsidiary equity units for which investor has right to convert to common stock		500,000
2014 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock authorized and reserved for issuance		3,511,695
Percentage of increase in number of shares of common stock issued and outstanding		5.00%
Common Class B Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Conversion ratio		one
Common Class A [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of units owned		100.00%
PDV Spectrum Holding Company, LLC [Member] | Common Class B Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from investment, shares	500,000
Sale of stock, price per share | $ / shares	$ 20
Stock issued during period value to purchase of assets | $	$ 10,000,000
Non-Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to non-vested share options granted | $		$ 3,400,000
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding		179,945			179,945
Stock compensation expense | $			$ 0	$ 0
Restricted stock units outstanding		109,138			109,138
Weighted average fair value for each stock option award granted | $ / shares		$ 13.06
Unvested compensation expense | $		$ 2,600,000
Weighted average Period for each stock option award granted		3 years 1 month 6 days
Stock options awarded
Exercise price per share | $ / shares
Stock awards issued
Performance Shares [Member] | Selling, General and Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense | $		$ 600,000
Performance Shares [Member] | Restructuring Charges [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense | $		$ 2,100,000
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding		2,067,060			1,968,374
Stock compensation expense | $		$ 2,700,000	700,000
Transferred shares, expense | $		2,100,000
Unrecognized compensation cost related to non-vested share options granted | $		$ 5,400,000
Stock options awarded		112,000
Exercise price per share | $ / shares		$ 28.20
Number of equal stock option vesting installments | item		3
Expected forfeiture rate		3.00%
Dividend yield		0.00%
Volatility		49.71%
Expected term		5 years
Weighted Average Contractual Term, Options outstanding		10 years
Stock Option [Member] | Consultant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options awarded		100,000
Stock Option [Member] | President [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options awarded		100,000
Stock Option [Member] | Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options awarded		12,000
Stock Option [Member] | 2014 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding		42,766
Stock options vested		42,766
Stock Option [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate		2.50%
Stock Option [Member] | Type III [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding		37,500
Stock compensation expense | $		$ 400,000
Stock Option [Member] | Type I [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding		325,319
Stock compensation expense | $		$ 1,700,000
Stock Option [Member] | First Anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of vesting for stock granted to employees		25.00%
Stock Option [Member] | Second Anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of vesting for stock granted to employees		25.00%
Stock Option [Member] | Second Anniversary [Member] | Consultant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of vesting for stock granted to employees		50.00%
Stock Option [Member] | Third Anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of vesting for stock granted to employees		25.00%
Stock Option [Member] | Third Anniversary [Member] | Consultant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of vesting for stock granted to employees		25.00%
Stock Option [Member] | Fourth Anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of vesting for stock granted to employees		25.00%
Stock Option [Member] | Fourth Anniversary [Member] | Consultant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of vesting for stock granted to employees		25.00%
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense | $		$ 1,200,000	$ 400,000
Restricted stock units outstanding		187,747			217,813
Unvested compensation expense | $		$ 3,800,000
Weighted average period of recognition of unrecognized compensation cost		2 years 6 months
Stock awards issued		3,167
Restricted Stock [Member] | Selling, General and Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense | $		$ 500,000
Restricted Stock [Member] | Restructuring Charges [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense | $		700,000
Restricted Stock [Member] | Type III [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense | $		$ 700,000
Restricted stock units outstanding		27,819

Stock Acquisition Rights, Sto43

Stock Acquisition Rights, Stock Options and Warrants (Summary of Restricted Stock and Restricted Stock Units Activity) (Details) - Restricted Stock [Member]	3 Months Ended
	Jun. 30, 2018$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Outstanding (shares) | shares	217,813
Stock, Granted (shares) | shares	3,167
Stock, Forfeited (shares) | shares	(4,563)
Stock, Vested (shares) | shares	(28,670)
Stock Outstanding (shares) | shares	187,747
Weighted Average Grant Date Fair Value, Stock Outstanding | $ / shares	$ 24.69
Weighted Average Grant Date Fair Value, Stock, Granted | $ / shares	28.20
Weighted Average Grant Date Fair Value, Stock, Forfeited | $ / shares	(25.96)
Weighted Average Grant Date Fair Value, Stock, Vested | $ / shares	(22.51)
Weighted Average Grant Date Fair Value, Stock Outstanding | $ / shares	$ 25.05

Stock Acquisition Rights, Sto44

Stock Acquisition Rights, Stock Options and Warrants (Summary of Performance Stock Activity) (Details) - Performance Shares [Member]	3 Months Ended
	Jun. 30, 2018$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Outstanding (shares) | shares	109,138
Stock, Granted (shares) | shares
Stock, Forfeited (shares) | shares
Stock, Vested (shares) | shares
Stock Outstanding (shares) | shares	109,138
Weighted Average Grant Date Fair Value, Stock Outstanding | $ / shares	$ 23.80
Weighted Average Grant Date Fair Value, Stock, Granted | $ / shares
Weighted Average Grant Date Fair Value, Stock, Forfeited | $ / shares
Weighted Average Grant Date Fair Value, Stock, Vested | $ / shares
Weighted Average Grant Date Fair Value, Stock Outstanding | $ / shares	$ 23.80

Stock Acquisition Rights, Sto45

Stock Acquisition Rights, Stock Options and Warrants (Summary of Stock Option Activity) (Details) - Stock Option [Member]	3 Months Ended
	Jun. 30, 2018$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding (shares) | shares	1,968,374
Options, Granted (shares) | shares	112,000
Options, Exercised (shares) | shares	(187)
Options, Forfeited/Expired (shares) | shares	(13,127)
Options Outstanding (shares) | shares	2,067,060
Weighted Average Exercise Price, Options outstanding | $ / shares	$ 23.11
Weighted Average Exercise Price, Granted | $ / shares	28.20
Weighted Average Exercise Price, Exercised | $ / shares	(21.70)
Weighted Average Exercise Price, forfeited/expired | $ / shares	(26.34)
Weighted Average Exercise Price, Options outstanding | $ / shares	$ 23.37

Stock Acquisition Rights, Sto46

Stock Acquisition Rights, Stock Options and Warrants (Schedule of Additional Information Regarding Stock Options Outstanding) (Details) - Stock Option [Member]	3 Months Ended
	Jun. 30, 2018$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number Outstanding (shares) | shares	2,067,060
Weighted Average Remaining Life in Years	6 years 8 months 5 days
Weighted Average Exercise Prices	$ 23.37
Options Exercisable (shares) | shares	1,535,244
Weighted Average Exercise Price of Shares Exercisable	$ 22.28
$13.25 - $20.00 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices, Minimum	13.25
Exercise Prices, Maximum	$ 20
Number Outstanding (shares) | shares	1,126,878
Weighted Average Remaining Life in Years	5 years 7 months 28 days
Weighted Average Exercise Prices	$ 19.75
Options Exercisable (shares) | shares	1,097,253
Weighted Average Exercise Price of Shares Exercisable	$ 19.74
$20.01 - $46.23 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices, Minimum	20.01
Exercise Prices, Maximum	$ 46.23
Number Outstanding (shares) | shares	859,631
Weighted Average Remaining Life in Years	8 years 7 days
Weighted Average Exercise Prices	$ 25.82
Options Exercisable (shares) | shares	377,503
Weighted Average Exercise Price of Shares Exercisable	$ 25.57
$46.24 - $72.85 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices, Minimum	46.24
Exercise Prices, Maximum	$ 72.85
Number Outstanding (shares) | shares	80,551
Weighted Average Remaining Life in Years	6 years 10 months 2 days
Weighted Average Exercise Prices	$ 47.87
Options Exercisable (shares) | shares	60,488
Weighted Average Exercise Price of Shares Exercisable	$ 47.88

Stock Acquisition Rights, Sto47

Stock Acquisition Rights, Stock Options and Warrants (Summary of Performance Stock Options) (Details) - Performance Shares [Member]	3 Months Ended
	Jun. 30, 2018$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding (shares) | shares	179,945
Options, Granted (shares) | shares
Options, Forfeited/Expired (shares) | shares
Options Outstanding (shares) | shares	179,945
Weighted Average Exercise Price, Options outstanding | $ / shares	$ 25.83
Weighted Average Exercise Price, Granted | $ / shares
Weighted Average Exercise Price, forfeited/expired | $ / shares
Weighted Average Exercise Price, Options outstanding | $ / shares	$ 25.83

Commitments and Contingencies48

Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Commitments And Contingencies [Line Items]
Lease rent expense	$ 0.7	$ 0.6
Accumulated deferred rent payable	2.2
Cost of Revenue [Member]
Commitments And Contingencies [Line Items]
Lease rent expense	0.5	0.4
Operating Expense [Member]
Commitments And Contingencies [Line Items]
Lease rent expense	$ 0.2	$ 0.2
Office Space [Member]
Commitments And Contingencies [Line Items]
Lease extension	10 years
Office Space [Member] | Minimum [Member]
Commitments And Contingencies [Line Items]
Lease expiration date	Jan. 7, 2019
Office Space [Member] | Maximum [Member]
Commitments And Contingencies [Line Items]
Lease expiration date	Mar. 31, 2027
Tower Space [Member] | Minimum [Member]
Commitments And Contingencies [Line Items]
Lease expiration date	Feb. 28, 2020
Tower Space [Member] | Maximum [Member]
Commitments And Contingencies [Line Items]
Lease expiration date	Jun. 30, 2026

Commitments and Contingencies49

Commitments and Contingencies (Aggregate Rentals Under Non-cancelable Leases For Office And Plant Space) (Details) $ in Thousands	Jun. 30, 2018USD ($)
Commitments and Contingencies [Abstract]
2019 (9 months)	$ 1,699
2,020	2,149
2,021	1,854
2,022	1,495
2,023	1,314
After 2,023	3,986
Total	$ 12,497

Concentrations of Credit Risk (

Concentrations of Credit Risk (Details)	3 Months Ended
	Jun. 30, 2018item
Credit Concentration Risk [Member]
Concentration Risk [Line Items]
Number of carriers	2

Business Concentrations (Detail

Business Concentrations (Details) - Tier 1 Carrier Partner [Member] - Customer Concentration Risk [Member] - item	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018
Operating Revenue [Member]
Concentration Risk [Line Items]
Number of carriers	1	1
Concentration risk, percentage	33.00%	40.00%
Accounts Receivable [Member]
Concentration Risk [Line Items]
Number of carriers	1		1
Concentration risk, percentage	52.00%		53.00%