Airgain (AIRG) 10-Q 12 May 17 2017 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2017	May 10, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q1
Trading Symbol	AIRG
Entity Registrant Name	AIRGAIN INC
Entity Central Index Key	1,272,842
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		9,520,290

Unaudited Condensed Balance She

Unaudited Condensed Balance Sheets - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 41,859,298	$ 45,161,403
Trade accounts receivable, net	7,512,937	5,154,996
Inventory	108,321	146,815
Prepaid expenses and other current assets	318,937	349,550
Total current assets	49,799,493	50,812,764
Property and equipment, net	812,005	807,086
Goodwill	1,249,956	1,249,956
Customer relationships, net	2,744,168	2,822,918
Intangible assets, net	268,123	286,719
Other assets	189,876	84,060
Total assets	55,063,621	56,063,503
Current liabilities:
Accounts payable	3,992,976	3,949,005
Accrued bonus	599,475	1,748,551
Accrued liabilities	803,936	1,072,242
Deferred purchase price	1,000,000	1,000,000
Current portion of long-term notes payable	1,333,333	1,388,563
Current portion of deferred rent obligation under operating lease	81,332	81,332
Total current liabilities	7,811,052	9,239,693
Long-term notes payable	1,000,000	1,333,333
Deferred tax liability	16,000	6,166
Deferred rent obligation under operating lease	421,170	451,909
Total liabilities	9,248,222	11,031,101
Stockholders’ equity:
Common shares, par value $0.0001, 200,000,000 shares authorized at March 31, 2017 and December 31, 2016; 9,488,057 and 9,275,062 shares issued and outstanding at March 31, 2017 and December 31, 2016, respectively	949	928
Additional paid in capital	88,980,356	88,582,470
Accumulated deficit	(43,165,906)	(43,550,996)
Total stockholders’ equity	45,815,399	45,032,402
Commitments and contingencies (note 10)
Total liabilities and stockholders’ equity	$ 55,063,621	$ 56,063,503

Unaudited Condensed Balance Sh3

Unaudited Condensed Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2017	Dec. 31, 2016
Statement Of Financial Position [Abstract]
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	9,488,057	9,275,062
Common stock, shares outstanding	9,488,057	9,275,062

Unaudited Condensed Statements

Unaudited Condensed Statements of Operations - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Sales	$ 11,252,417	$ 8,512,305
Cost of goods sold	5,963,959	4,834,681
Gross profit	5,288,458	3,677,624
Operating expenses:
Research and development	1,596,799	1,321,686
Sales and marketing	1,628,141	1,241,104
General and administrative	1,638,039	998,040
Total operating expenses	4,862,979	3,560,830
Income from operations	425,479	116,794
Other expense (income):
Interest income	(37,201)
Interest expense	30,764	52,475
Fair market value adjustment - warrants		(78,834)
Total other income	(6,437)	(26,359)
Income before income taxes	431,916	143,153
Provision for income taxes	46,826	4,000
Net income	385,090	139,153
Accretion of dividends on preferred convertible stock		(604,069)
Net income (loss) attributable to common stockholders	$ 385,090	$ (464,916)
Net income (loss) per share:
Basic	$ 0.04	$ (0.70)
Diluted	$ 0.04	$ (0.82)
Weighted average shares used in calculating income (loss) per share:
Basic	9,359,562	665,842
Diluted	10,201,606	665,842

Unaudited Condensed Statement o

Unaudited Condensed Statement of Stockholders' Equity - 3 months ended Mar. 31, 2017 - USD ($)	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit
Beginning balance at Dec. 31, 2016	$ 45,032,402	$ 928	$ 88,582,470	$ (43,550,996)
Beginning balance, shares at Dec. 31, 2016		9,275,062
Stock-based compensation	73,475		73,475
Exercise of stock options	$ 323,651	$ 15	323,636
Exercise of stock options, shares	155,520	155,520
Shares issued pursuant to stock awards		$ 6	(6)
Shares issued pursuant to stock awards, shares		57,475
Reversal of costs related to secondary offering	$ 781		781
Net income	385,090			385,090
Ending balance at Mar. 31, 2017	$ 45,815,399	$ 949	$ 88,980,356	$ (43,165,906)
Ending balance, shares at Mar. 31, 2017		9,488,057

Unaudited Condensed Statements6

Unaudited Condensed Statements of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net income	$ 385,090	$ 139,153
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation	115,447	117,445
Amortization	97,346	91,333
Fair market value adjustment - warrants		(78,834)
Stock-based compensation	73,475	28,893
Deferred tax liability	9,834
Changes in operating assets and liabilities:
Trade accounts receivable	(2,357,941)	52,995
Inventory	38,494	73,048
Prepaid expenses and other assets	(75,203)	83,248
Accounts payable	42,917	(349,102)
Accrued bonus	(1,149,076)	(937,250)
Accrued liabilities	(268,306)	(47,302)
Deferred obligation under operating lease	(30,739)	(26,683)
Net cash used in operating activities	(3,118,662)	(853,056)
Cash flows from investing activities:
Purchases of property and equipment	(119,312)	(41,030)
Net cash used in investing activities	(119,312)	(41,030)
Cash flows from financing activities:
Repayment of notes payable	(388,563)	(404,469)
Reversal of costs related to initial public offering	781
Proceeds from exercise of stock options	323,651
Net cash used in financing activities	(64,131)	(404,469)
Net decrease in cash and cash equivalents	(3,302,105)	(1,298,555)
Cash and cash equivalents, beginning of period	45,161,403	5,335,913
Cash and cash equivalents, end of period	41,859,298	4,037,358
Supplemental disclosure of cash flow information
Interest paid	32,508	52,475
Supplemental disclosure of non-cash investing and financing activities:
Accretion of Series E, F, and G preferred redeemable convertible stock to redemption amount		$ 533,203
Accrual of property and equipment	$ 1,054

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2017
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation	Note 1. Basis of Presentation Business Description Airgain, Inc. (the Company) was incorporated in the State of California on March 20, 1995, and reincorporated in the State of Delaware on August 15, 2016. The Company is a leading provider of embedded antenna technologies used to enable high performance wireless networking across a broad range of home, enterprise, and industrial devices. The Company designs, develops, and engineers its antenna products for original equipment and design manufacturers worldwide. The Company’s main office is in San Diego, California with office space and research facilities in San Diego, California, Rancho Santa Fe, California, Poway, California, Melbourne, Florida, Taipei, Taiwan, Shenzhen and Jiangsu, China and Cambridgeshire, United Kingdom. Basis of Presentation The accompanying unaudited condensed financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) and applicable rules and regulations of the Securities and Exchange Commission (SEC) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Interim financial results are not necessarily indicative of results anticipated for the full year. As such, the information included in this quarterly report on Form 10-Q should be read in conjunction with the financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2016, from which the balance sheet information herein was derived. The condensed balance sheet as of December 31, 2016 included herein was derived from the audited financial statements as of that date, but does not include all disclosures including notes required by GAAP. The condensed statements of operations for the three months ended March 31, 2017 and March 31, 2016, and the balance sheet data as of March 31, 2017 have been prepared on the same basis as the audited financial statements. In the opinion of management, the accompanying unaudited condensed financial statements reflect all adjustments, consisting of normal and recurring adjustments, necessary for a fair presentation of results of the Company’s operations and financial position for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full year ending December 31, 2017 or for any future period. Inventory The vast majority of the Company’s products are manufactured by third parties that retain ownership of the inventory until title is transferred to the customer at the shipping point. In certain instances, shipping terms are delivery at place and the Company is responsible for arranging transportation and delivery of goods ready for unloading at the named place. The Company bears all risk involved in bringing the goods to the named place and records the related inventory in transit to the customer as inventory on the accompanying balance sheet. Inventory is stated at the lower of cost or market. Cost is determined using the first-in, first-out method (FIFO). Segment Information The Company’s operations are located primarily in the United States, and most of its assets are located in San Diego, California. The Company operates in one segment related to the sale of antenna products. The Company’s chief operating decision-maker is its chief executive officer, who reviews operating results on an aggregate basis and manages the Company’s opertions as a single operating segment. Initial Public Offering On August 17, 2016, the Company completed its initial public offering (IPO) in which it issued and sold 1.5 million shares of common stock at a public offering price of $8.00 per share. The Company received net proceeds of approximately $9.5 million after deducting underwriting discounts and commissions of $0.8 million and offering-related transaction costs of approximately $1.7 million. Upon the closing of the IPO, all shares of the Company’s then-outstanding preferred redeemable convertible stock and preferred convertible stock automatically converted into an aggregate of 3,080,733 shares of common stock and the Company issued 1,957,207 shares of common stock in satisfaction of accumulated dividends. Additionally, the Company reduced the number of preferred shares authorized to a total of 10,000,000 shares. On August 29, 2016 the underwriters exercised their over-allotment option to purchase an additional 200,100 shares of common stock at the public offering price of $8.00 per share, which resulted in net proceeds to the Company of approximately $1.5 million, after deducting underwriting discounts, commissions and estimated offering-related transaction costs of approximately $0.1 million. On December 8, 2016, the Company completed a public offering of common stock in which it issued and sold 1,352,941 shares of common stock at a public offering price of $17.00 per share and received gross proceeds of $23.0 million, which resulted in net proceeds to the Company of approximately $20.7 million, after deducting underwriting discounts and commissions of approximately $1.5 million and offering-related transaction costs of approximately $0.8 million. On December 14, 2016, the underwriters exercised their over-allotment option to purchase an additional 332,941 shares of common stock at the public offering price of $17.00 per share and the Company received gross proceeds of approximately $5.6 million, which resulted in net proceeds to the Company of approximately $5.3 million, after deducting underwriting discounts and commissions of approximately $0.3 million and offering-related transaction costs. Fair Value Measurements The carrying values of the Company’s financial instruments, including cash, trade accounts receivable, accounts payable, accrued liabilities and debt approximate their fair values due to the short maturity of these instruments. Fair value measurements are market-based measurements, not entity-specific measurements. Therefore, fair value measurements are determined based on the assumptions that market participants would use in pricing the asset or liability. The Company follows a three-level hierarchy to prioritize the inputs used in the valuation techniques to derive fair values. The basis for fair value measurements for each level within the hierarchy is described below: • Level 1: Quoted prices in active markets for identical assets or liabilities. • Level 2: Quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs are observable in active markets. • Level 3: Valuations derived from valuation techniques in which one or more significant inputs are unobservable in active markets. The Company’s accounting policy is to recognize transfers between levels of the fair value hierarchy on the date of the event or change in circumstances that caused the transfer. There were no transfers into or out of Level 1, Level 2, or Level 3 for the three months ended March 31, 2017 and for the year ended December 31, 2016. The following table provides a rollforward of the Company’s Level 3 fair value measurements during the three months ended March 31, 2017 and 2016: Three Months Ended March 31, 2017 2016 Beginning balance $ — $ 709,504 Change in fair value of warrant liability — (78,834 ) Ending balance $ — $ 630,670 Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include valuation of the stock-based compensation expense, intangible assets and goodwill.

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 2. Summary of Significant Accounting Policies During the three months ended March 31, 2017, there have been no material changes to the Company’s significant accounting policies as described in the Annual Report on Form 10-K for the fiscal year ended December 31, 2016. Recent Accounting Pronouncements In January 2017, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2017-04, Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment In August 2016, the FASB, issued ASU, No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) In July 2015, the FASB issued ASU 2015-11, Simplifying the Measurement of Inventory In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers

Net Income (Loss) Per Share

Net Income (Loss) Per Share	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Net Income (Loss) Per Share	Note 3. Net Income (Loss) Per Share Basic net income or loss per share is calculated by dividing net income or loss available to common stockholders by the weighted average shares of common stock outstanding for the period. The per share computations reflect the one-for-ten reverse stock split that was effected in July 2016. Diluted net income or loss per share is calculated by dividing net income or loss by the weighted average shares of common stock outstanding for the period plus amounts representing the dilutive effect of securities that are convertible into common stock. Preferred dividends are deducted from net income or loss in arriving at net income or loss attributable to common stockholders. The Company calculates diluted earnings or loss per common share using the treasury stock method and the as-if-converted method, as applicable. The following table presents the computation of net income or loss per share: Three Months Ended March 31, 2017 2016 Numerator: Net income $ 385,090 $ 139,153 Accretion of dividends on preferred stock — (604,069 ) Net income (loss) attributable to common stockholders - basic $ 385,090 $ (464,916 ) Adjustment for change in fair value of warrant liability — (78,834 ) Net income (loss) attributable to common stockholders - diluted $ 385,090 $ (543,750 ) Denominator: Weighted average common shares outstanding Basic 9,359,562 665,842 Diluted 10,201,606 665,842 Net income (loss) per share: Basic $ 0.04 $ (0.70 ) Diluted $ 0.04 $ (0.82 ) Diluted weighted average common shares outstanding as of March 31, 2017 includes 10,532 warrants and 831,512 options outstanding. Potentially dilutive securities not included in the calculation of diluted net income (loss) per share because to do so would be anti-dilutive are as follows (in common stock equivalent shares): Three Months Ended March 31, 2017 2016 Preferred redeemable convertible stock, including accumulated dividends — 4,944,630 Employee stock options 6,581 754,192 Series G preferred stock warrants outstanding — 788,338 Total 6,581 6,487,160

Acquisition

Acquisition	3 Months Ended
	Mar. 31, 2017
Business Combinations [Abstract]
Acquisition	Note 4. Acquisition On December 17, 2015, the Company executed and entered into an asset purchase agreement for certain North American assets of Skycross, Inc. (Skycross), a manufacturer of advanced antenna and radio-frequency solutions. In addition to the $4.0 million paid up front, the purchase price also included a contingent consideration arrangement. The $1.0 million of deferred consideration is payable upon the later of (i) the expiration of the Transition Services Agreement between the Company and Skycross which defines transition services to be provided by Skycross to the Company and (ii) the date on which the Company has received copies of third party approvals with respect to each customer and program that was purchased. The potential undiscounted amount of all future payments that could be required to be paid under the contingent consideration arrangement is between $0.0 and $1.0 million. The fair value of the contingent consideration was estimated by applying the income approach. The income approach is based on estimating the value of the present worth of future net cash flows. As of March 31, 2017, the contingent consideration was still outstanding.

Intangible Assets

Intangible Assets	3 Months Ended
	Mar. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible Assets	Note 5. Intangible Assets The following is a summary of the Company’s acquired intangible assets: March 31, 2017 Weighted Average Amortization Period Gross Carrying Amount Accumulated Amortization Intangibles, Net Developed technologies 5 $ 280,000 $ 50,104 $ 229,896 Customer relationships 10 3,150,000 405,832 2,744,168 Non-compete agreement 3 67,000 28,773 38,227 Total intangible assets, net 10 $ 3,497,000 $ 484,709 $ 3,012,291 December 31, 2016 Weighted Average Amortization Period Gross Carrying Amount Accumulated Amortization Intangibles, Net Developed technologies 5 $ 280,000 $ 37,091 $ 242,909 Customer relationships 10 3,150,000 327,082 2,822,918 Non-compete agreement 3 67,000 23,190 43,810 Total intangible assets, net 10 $ 3,497,000 $ 387,363 $ 3,109,637 The estimated annual amortization of intangible assets for the next five years and thereafter is shown in the following table. Actual amortization expense to be reported in future periods could differ from these estimates as a results of acquisitions, divestitures, asset impairments, among other factors. Amortization expense was $97,346 and $91,333 for the three months ended March 31, 2017 and 2016, respectively. Estimated Future Amortization 2017 (remaining nine months) $ 292,039 2018 388,529 2019 367,052 2020 366,333 2021 350,420 Thereafter 1,247,918 Total $ 3,012,291

Long-term Notes Payable (includ

Long-term Notes Payable (including current portion) and Line of Credit	3 Months Ended
	Mar. 31, 2017
Long Term Debt [Abstract]
Long-term Notes Payable (including current portion) and Line of Credit	Note 6. Long-term Notes Payable (including current portion) and Line of Credit In June 2012, the Company amended its line of credit with Silicon Valley Bank. The amended revolving line of credit facility allows for an advance up to $3.0 million. The facility bears interest at the U.S. prime rate (4.0% as of March 31, 2017) plus 1.25%. The revolving facility is available as long as the Company maintains a liquidity ratio of cash and cash equivalents plus accounts receivable to outstanding debt under the facility of 1.25 to 1.00; otherwise, the facility reverts to its previous eligible receivables financing arrangement. The amended facility matures in April 2018. The bank has a first security interest in all the Company’s assets excluding intellectual property, for which the bank has received a negative pledge. There was no balance owed on the line of credit as of March 31, 2017 and December 31, 2016. In December 2013, the Company further amended its revolving line of credit with Silicon Valley Bank to include a growth capital term loan of up to $750,000. The growth capital term loan required interest only payments through June 30, 2014 at which point it was to be repaid in 32 equal monthly installments of interest and principal. The growth capital term loan matured on February 1, 2017, at which time $55,230 in principal and accrued interest was paid. The growth capital term loan interest rate was 6.5%. As of December 31, 2016, $55,230 was outstanding under this loan. As of March 31, 2017, there was no balance owed under this loan. In December 2015, the Company amended its loan and security agreement with Silicon Valley Bank to include a term loan in the amount of $4.0 million. The loan requires 36 monthly installments of interest and principal. The loan matures on December 1, 2018. The loan agreement requires the Company to maintain a liquidity ratio of 1.25 to 1.00 as of the last day of each month and a minimum EBITDA measured as of the last day of each fiscal quarter for the previous six month period (for March 31, 2017 the minimum EBITDA is $750,000). The interest rate is fixed at 5%. As of March 31, 2017 and December 31, 2016, $2,333,333 and $2,666,666 was outstanding under this loan, respectively. The remaining principal payments on the $4.0 million loan subsequent to March 31, 2017 are as follows: Year ending: 2017 $ 1,000,000 2018 1,333,333 $ 2,333,333 The Company was in compliance with all financial term loan and line of credit financial covenants as of March 31, 2017.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Note 7. Income Taxes The Company’s effective income tax rate was 10.84% for the three months ended March 31, 2017. The variance from the U.S. federal statutory tax rate of 34% was primarily attributable to the utilization of deferred tax attributes that had a full valuation allowance as well as nondeductible meals and entertainment expenses, and nondeductible incentive stock option compensation expenses. Management assesses its deferred tax assets quarterly to determine whether all or any portion of the asset is more likely than not unrealizable under Accounting Standards Codification (ASC) 740. The Company is required to establish a valuation allowance for any portion of the asset that management concludes is more likely than not to be unrealizable. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. The Company’s assessment considers all evidence, both positive and negative, including the nature, frequency and severity of any current and cumulative losses, taxable income in carryback years, the scheduled reversal of deferred tax liabilities, tax planning strategies, and projected future taxable income in making this assessment. At March 31, 2017 and December 31, 2016, the Company has a full valuation allowance against net deferred tax assets. Should the Company continue to achieve substantial pre-tax income during 2017 or be better able to forecast taxable income into the future, the Company may need to release a substantial portion of its federal valuation allowance during 2017. FASB ASC Topic 740, Income Taxes As of March 31, 2017, the Company has $13.19 million in federal and $7.77 million in state net operating loss carryforwards to offset future taxable income. Current federal and state tax laws include substantial restrictions on the annual utilization of net operating loss and tax credit carryforwards in the event of an ownership change. Accordingly, the Company’s ability to utilize net operating loss and tax credit carryforwards may be limited as a result of such ownership change. Such information could result in the expiration of carryforwards before they are utilized.

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2017
Class Of Stock Disclosures [Abstract]
Stockholders' Equity	Note 8. Stockholders’ Equity Shares Reserved for Future Issuance The following common stock is reserved for future issuance at March 31, 2017 and December 31, 2016: March 31, 2017 December 31, 2016 Warrants issued and outstanding 51,003 51,003 Stock option awards issued and outstanding 889,862 1,040,387 Authorized for grants under the 2016 Equity Incentive Plan 704,750 709,750 Authorized for grants under the 2016 Employee Stock Purchase Plan 100,000 100,000 1,745,615 1,901,140

Stock Options

Stock Options	3 Months Ended
	Mar. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock Options	Note 9. Stock Options The following table summarizes the outstanding stock option activity during the periods indicated: Number of shares Weighted average exercise price Weighted average remaining contractual term Balance at December 31, 2015 756,692 2.10 7.60 Granted 359,319 2.60 9.40 Exercised (58,155 ) 2.36 3.50 Expired/Forefeited (17,469 ) 2.13 2.60 Balance at December 31, 2016 1,040,387 2.25 7.80 Granted 4,995 15.85 9.80 Exercised (155,520 ) 2.08 6.05 Balance at March 31, 2017 889,862 2.36 7.82 Vested and exercisable at March 31, 2017 494,408 2.07 7.01 Vested and expected to vest at March 31, 2017 889,862 2.36 7.82 The weighted average grant-date fair value of options granted during the three months ended March 31, 2017 and for the year ended December 31, 2016 was $6.21 and $1.23, respectively. For fully vested stock options, the aggregate intrinsic value as of March 31, 2017 and December 31, 2016 was $6,470,698 and $7,770,086, respectively. For stock options expected to vest, the aggregate intrinsic value as of March 31, 2017 and December 31, 2016 was $4,942,466 and $4,569,243, respectively. During the year ended December 31, 2016, a total of 57,475 shares of restricted common stock with a fair value of $2.00 per share were issued to the Company’s Chief Financial Officer and Chief Operating Officer of which 100% of the shares vest six months after the completion of an initial public offering. The shares vested in February 2017. The Company recorded $53,056 and $61,894 in expense associated with these shares during the three months ended March 31, 2017 and the year ended December 31, 2016, respectively. At March 31, 2017 and December 31, 2016 there was $471,071 and $522,818, respectively, of total unrecognized compensation cost related to unvested stock options and restricted stock granted under the plans. These costs are expected to be recognized over the next three years and is based on the date the options were granted. The Company currently uses authorized and unissued shares to satisfy share award exercises.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2017
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 10. Commitments and Contingencies Operating Leases The Company has entered into lease agreements for office space and research facilities in San Diego, California; Rancho Santa Fe, California; Poway, California; Melbourne, Florida; Taipei, Taiwan; Shenzhen and Jiangsu, China; and Cambridgeshire, United Kingdom. Rent expense was $183,615 and $189,862, respectively, for the three months ended March 31, 2017 and 2016. The longest lease expires in June 2020. The Company moved into its facility in San Diego, California during the year ended December 31, 2014. The San Diego facility lease agreement included a tenant improvement allowance which provided for the landlord to pay for tenant improvements on behalf of the Company up to $515,000. Based on the terms of this landlord incentive and involvement of the Company in the construction process, the leasehold improvements purchased under the landlord incentive were determined to be property of the Company. The future minimum lease payments required under operating leases in effect at March 31, 2017 were as follows: Year ending: 2017 (remaining nine months) $ 588,922 2018 571,700 2019 525,297 2020 265,940 $ 1,951,859

Concentration of Credit Risk

Concentration of Credit Risk	3 Months Ended
	Mar. 31, 2017
Risks And Uncertainties [Abstract]
Concentration of Credit Risk	Note 11. Concentration of Credit Risk (a) Concentration of Sales and Accounts Receivable The following represents customers that accounted for 10% or more of total revenue during the three months ended March 31, 2017 and 2016 and customers that accounted for 10% or more of total trade accounts receivable at March 31, 2017 and 2016. Three Months Ended March 31, 2017 2016 Percentage of net revenue Customer A 22 % 15 % Customer B 14 34 Customer C 13 5 Customer D 8 11 As of March 31, 2017 2016 Percentage of gross trade accounts receivable Customer A 16 % 12 % Customer B 14 1 Customer C 14 14 Customer D 11 22 Customer E 6 11 (b) Revenue by Geography Net revenue by geographic area are as follows. Revenue is attributed by geographic location based on the bill-to location of the Company’s customers. Three Months Ended March 31, 2017 2016 Percentage of net revenue China 71 % 73 % Other Asia 13 11 North America 10 12 Europe 6 4 Although the Company ships the majority of antennas to its customers in China (primarily ODM’s and distributors), the end-users of the Company’s products are much more geographically diverse. (c) Concentration of Purchases During the three months ended March 31, 2017 and 2016, all of the Company’s products were manufactured by two vendors in China.

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2017
Subsequent Events [Abstract]
Subsequent Events	Note 13. Subsequent Events On April 27, 2017, the Company completed the acquisition of substantially all of the assets of Antenna Plus, LLC (Antenna Plus). Antenna Plus is a privately-held supplier of antenna-based solutions for mobile and automotive fleet applications for government, public safety, and Industrial IOT (Internet of Things) markets. The acquisition provides leverage for the Company’s existing products into several new markets, including the fast growing automotive fleet and industrial IOT space. The transaction was completed pursuant to an Asset Purchase Agreement with MCA Financial Group, Ltd., acting as the court-appointed receiver for Antenna Plus. Upon the closing of the transaction, the Company paid to Antenna Plus total consideration of approximately $6.4 million in cash. The purchase price is subject to certain post-closing working capital adjustments. In addition, the Company assumed certain contracts and other liabilities of Antenna Plus, as expressly set forth in the Asset Purchase Agreement. Given the timing of the acquisition in relation to this filing, the Company has not yet determined the acquisition-date fair value of the total consideration transferred, the acquisition-date fair value of each major class of consideration or the identification and valuation of indemnification assets.

Basis of Presentation (Policies

Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) and applicable rules and regulations of the Securities and Exchange Commission (SEC) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Interim financial results are not necessarily indicative of results anticipated for the full year. As such, the information included in this quarterly report on Form 10-Q should be read in conjunction with the financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2016, from which the balance sheet information herein was derived. The condensed balance sheet as of December 31, 2016 included herein was derived from the audited financial statements as of that date, but does not include all disclosures including notes required by GAAP. The condensed statements of operations for the three months ended March 31, 2017 and March 31, 2016, and the balance sheet data as of March 31, 2017 have been prepared on the same basis as the audited financial statements. In the opinion of management, the accompanying unaudited condensed financial statements reflect all adjustments, consisting of normal and recurring adjustments, necessary for a fair presentation of results of the Company’s operations and financial position for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full year ending December 31, 2017 or for any future period.
Inventory	Inventory The vast majority of the Company’s products are manufactured by third parties that retain ownership of the inventory until title is transferred to the customer at the shipping point. In certain instances, shipping terms are delivery at place and the Company is responsible for arranging transportation and delivery of goods ready for unloading at the named place. The Company bears all risk involved in bringing the goods to the named place and records the related inventory in transit to the customer as inventory on the accompanying balance sheet. Inventory is stated at the lower of cost or market. Cost is determined using the first-in, first-out method (FIFO).
Segment Information	Segment Information The Company’s operations are located primarily in the United States, and most of its assets are located in San Diego, California. The Company operates in one segment related to the sale of antenna products. The Company’s chief operating decision-maker is its chief executive officer, who reviews operating results on an aggregate basis and manages the Company’s opertions as a single operating segment.
Initial Public Offering	Initial Public Offering On August 17, 2016, the Company completed its initial public offering (IPO) in which it issued and sold 1.5 million shares of common stock at a public offering price of $8.00 per share. The Company received net proceeds of approximately $9.5 million after deducting underwriting discounts and commissions of $0.8 million and offering-related transaction costs of approximately $1.7 million. Upon the closing of the IPO, all shares of the Company’s then-outstanding preferred redeemable convertible stock and preferred convertible stock automatically converted into an aggregate of 3,080,733 shares of common stock and the Company issued 1,957,207 shares of common stock in satisfaction of accumulated dividends. Additionally, the Company reduced the number of preferred shares authorized to a total of 10,000,000 shares. On August 29, 2016 the underwriters exercised their over-allotment option to purchase an additional 200,100 shares of common stock at the public offering price of $8.00 per share, which resulted in net proceeds to the Company of approximately $1.5 million, after deducting underwriting discounts, commissions and estimated offering-related transaction costs of approximately $0.1 million. On December 8, 2016, the Company completed a public offering of common stock in which it issued and sold 1,352,941 shares of common stock at a public offering price of $17.00 per share and received gross proceeds of $23.0 million, which resulted in net proceeds to the Company of approximately $20.7 million, after deducting underwriting discounts and commissions of approximately $1.5 million and offering-related transaction costs of approximately $0.8 million. On December 14, 2016, the underwriters exercised their over-allotment option to purchase an additional 332,941 shares of common stock at the public offering price of $17.00 per share and the Company received gross proceeds of approximately $5.6 million, which resulted in net proceeds to the Company of approximately $5.3 million, after deducting underwriting discounts and commissions of approximately $0.3 million and offering-related transaction costs.
Fair Value Measurements	Fair Value Measurements The carrying values of the Company’s financial instruments, including cash, trade accounts receivable, accounts payable, accrued liabilities and debt approximate their fair values due to the short maturity of these instruments. Fair value measurements are market-based measurements, not entity-specific measurements. Therefore, fair value measurements are determined based on the assumptions that market participants would use in pricing the asset or liability. The Company follows a three-level hierarchy to prioritize the inputs used in the valuation techniques to derive fair values. The basis for fair value measurements for each level within the hierarchy is described below: • Level 1: Quoted prices in active markets for identical assets or liabilities. • Level 2: Quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs are observable in active markets. • Level 3: Valuations derived from valuation techniques in which one or more significant inputs are unobservable in active markets. The Company’s accounting policy is to recognize transfers between levels of the fair value hierarchy on the date of the event or change in circumstances that caused the transfer. There were no transfers into or out of Level 1, Level 2, or Level 3 for the three months ended March 31, 2017 and for the year ended December 31, 2016. The following table provides a rollforward of the Company’s Level 3 fair value measurements during the three months ended March 31, 2017 and 2016: Three Months Ended March 31, 2017 2016 Beginning balance $ — $ 709,504 Change in fair value of warrant liability — (78,834 ) Ending balance $ — $ 630,670
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include valuation of the stock-based compensation expense, intangible assets and goodwill.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In January 2017, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2017-04, Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment In August 2016, the FASB, issued ASU, No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) In July 2015, the FASB issued ASU 2015-11, Simplifying the Measurement of Inventory In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers

Basis of Presentation (Tables)

Basis of Presentation (Tables)	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Rollforward of Level 3 Fair Value Measurements	The following table provides a rollforward of the Company’s Level 3 fair value measurements during the three months ended March 31, 2017 and 2016: Three Months Ended March 31, 2017 2016 Beginning balance $ — $ 709,504 Change in fair value of warrant liability — (78,834 ) Ending balance $ — $ 630,670

Net Income (Loss) Per Share (Ta

Net Income (Loss) Per Share (Tables)	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Summary of Computation of Net Income or Loss Per Share	The following table presents the computation of net income or loss per share: Three Months Ended March 31, 2017 2016 Numerator: Net income $ 385,090 $ 139,153 Accretion of dividends on preferred stock — (604,069 ) Net income (loss) attributable to common stockholders - basic $ 385,090 $ (464,916 ) Adjustment for change in fair value of warrant liability — (78,834 ) Net income (loss) attributable to common stockholders - diluted $ 385,090 $ (543,750 ) Denominator: Weighted average common shares outstanding Basic 9,359,562 665,842 Diluted 10,201,606 665,842 Net income (loss) per share: Basic $ 0.04 $ (0.70 ) Diluted $ 0.04 $ (0.82 )
Summary of Potentially Dilutive Securities	Potentially dilutive securities not included in the calculation of diluted net income (loss) per share because to do so would be anti-dilutive are as follows (in common stock equivalent shares): Three Months Ended March 31, 2017 2016 Preferred redeemable convertible stock, including accumulated dividends — 4,944,630 Employee stock options 6,581 754,192 Series G preferred stock warrants outstanding — 788,338 Total 6,581 6,487,160

Intangible Assets (Tables)

Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Acquired Intangible Assets	The following is a summary of the Company’s acquired intangible assets: March 31, 2017 Weighted Average Amortization Period Gross Carrying Amount Accumulated Amortization Intangibles, Net Developed technologies 5 $ 280,000 $ 50,104 $ 229,896 Customer relationships 10 3,150,000 405,832 2,744,168 Non-compete agreement 3 67,000 28,773 38,227 Total intangible assets, net 10 $ 3,497,000 $ 484,709 $ 3,012,291 December 31, 2016 Weighted Average Amortization Period Gross Carrying Amount Accumulated Amortization Intangibles, Net Developed technologies 5 $ 280,000 $ 37,091 $ 242,909 Customer relationships 10 3,150,000 327,082 2,822,918 Non-compete agreement 3 67,000 23,190 43,810 Total intangible assets, net 10 $ 3,497,000 $ 387,363 $ 3,109,637
Schedule of Estimated Annual Amortization of Intangible Assets	The estimated annual amortization of intangible assets for the next five years and thereafter is shown in the following table. Actual amortization expense to be reported in future periods could differ from these estimates as a results of acquisitions, divestitures, asset impairments, among other factors. Amortization expense was $97,346 and $91,333 for the three months ended March 31, 2017 and 2016, respectively. Estimated Future Amortization 2017 (remaining nine months) $ 292,039 2018 388,529 2019 367,052 2020 366,333 2021 350,420 Thereafter 1,247,918 Total $ 3,012,291

Long-term Notes Payable (incl23

Long-term Notes Payable (including current portion) and Line of Credit (Tables)	3 Months Ended
	Mar. 31, 2017
Loan Agreement With Silicon Valley Bank
Schedule of Principal Payment of Loan	The remaining principal payments on the $4.0 million loan subsequent to March 31, 2017 are as follows: Year ending: 2017 $ 1,000,000 2018 1,333,333 $ 2,333,333

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2017
Class Of Stock Disclosures [Abstract]
Schedule of Common Stock Reserved for Future Issuance	The following common stock is reserved for future issuance at March 31, 2017 and December 31, 2016: March 31, 2017 December 31, 2016 Warrants issued and outstanding 51,003 51,003 Stock option awards issued and outstanding 889,862 1,040,387 Authorized for grants under the 2016 Equity Incentive Plan 704,750 709,750 Authorized for grants under the 2016 Employee Stock Purchase Plan 100,000 100,000 1,745,615 1,901,140

Stock Options (Tables)

Stock Options (Tables)	3 Months Ended
	Mar. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Summary of Outstanding Stock Option Activity	The following table summarizes the outstanding stock option activity during the periods indicated: Number of shares Weighted average exercise price Weighted average remaining contractual term Balance at December 31, 2015 756,692 2.10 7.60 Granted 359,319 2.60 9.40 Exercised (58,155 ) 2.36 3.50 Expired/Forefeited (17,469 ) 2.13 2.60 Balance at December 31, 2016 1,040,387 2.25 7.80 Granted 4,995 15.85 9.80 Exercised (155,520 ) 2.08 6.05 Balance at March 31, 2017 889,862 2.36 7.82 Vested and exercisable at March 31, 2017 494,408 2.07 7.01 Vested and expected to vest at March 31, 2017 889,862 2.36 7.82

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2017
Commitments And Contingencies Disclosure [Abstract]
Schedule Future Minimum Lease Payments Under Operating Leases	The future minimum lease payments required under operating leases in effect at March 31, 2017 were as follows: Year ending: 2017 (remaining nine months) $ 588,922 2018 571,700 2019 525,297 2020 265,940 $ 1,951,859

Concentration of Credit Risk (T

Concentration of Credit Risk (Tables)	3 Months Ended
	Mar. 31, 2017
Risks And Uncertainties [Abstract]
Schedule of Concentration of Sales and Accounts Receivable	The following represents customers that accounted for 10% or more of total revenue during the three months ended March 31, 2017 and 2016 and customers that accounted for 10% or more of total trade accounts receivable at March 31, 2017 and 2016. Three Months Ended March 31, 2017 2016 Percentage of net revenue Customer A 22 % 15 % Customer B 14 34 Customer C 13 5 Customer D 8 11 As of March 31, 2017 2016 Percentage of gross trade accounts receivable Customer A 16 % 12 % Customer B 14 1 Customer C 14 14 Customer D 11 22 Customer E 6 11
Schedule of Revenue by Geographic area	Net revenue by geographic area are as follows. Revenue is attributed by geographic location based on the bill-to location of the Company’s customers. Three Months Ended March 31, 2017 2016 Percentage of net revenue China 71 % 73 % Other Asia 13 11 North America 10 12 Europe 6 4

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Details) $ / shares in Units, $ in Millions	Dec. 14, 2016USD ($)$ / sharesshares	Dec. 08, 2016USD ($)$ / sharesshares	Aug. 29, 2016USD ($)$ / sharesshares	Aug. 17, 2016USD ($)$ / sharesshares	Mar. 31, 2017Segmentshares	Dec. 31, 2016shares
Basis Of Presentation [Line Items]
Number of operating segments | Segment					1
Common stock, shares issued | shares		1,352,941			9,488,057	9,275,062
Common stock, offering price per share | $ / shares		$ 17
Underwriting discounts and commissions		$ 1.5
Offering - related transaction cost		0.8
Net proceeds on issuance of common stock after deducting underwriting discounts and commissions and estimated offering expenses/offering - related transaction cost		20.7
Gross proceeds from public offering		$ 23
IPO
Basis Of Presentation [Line Items]
Common stock, shares issued | shares				1,500,000
Common stock, offering price per share | $ / shares				$ 8
Net proceeds from initial public offering				$ 9.5
Underwriting discounts and commissions				0.8
Offering - related transaction cost				$ 1.7
Number of common stock converted from preferred stock | shares				3,080,733
Common stock dividends, shares | shares				1,957,207
Number of preferred stock, shares authorized | shares				10,000,000
Over Allotment Option
Basis Of Presentation [Line Items]
Common stock, offering price per share | $ / shares	$ 17		$ 8
Underwriting discounts and commissions	$ 0.3		$ 0.1
Common stock, shares issued | shares	332,941		200,100
Net proceeds on issuance of common stock after deducting underwriting discounts and commissions and estimated offering expenses/offering - related transaction cost	$ 5.3		$ 1.5
Gross proceeds from public offering	$ 5.6

Basis of Presentation - Rollfor

Basis of Presentation - Rollforward of Level 3 Fair Value Measurements (Details)	3 Months Ended
	Mar. 31, 2016USD ($)
Accounting Policies [Abstract]
Beginning balance	$ 709,504
Change in fair value of warrant liability	(78,834)
Ending balance	$ 630,670

Net Income (Loss) Per Share - A

Net Income (Loss) Per Share - Additional Information (Details)	1 Months Ended	3 Months Ended
	Jul. 31, 2016	Mar. 31, 2017shares	Mar. 31, 2016shares
Net Income (Loss) Per Share [Line Items]
Reverse stock split ratio	0.1
Diluted weighted average common shares outstanding		10,201,606	665,842
Warrant
Net Income (Loss) Per Share [Line Items]
Diluted weighted average common shares outstanding		10,532
Options Outstanding
Net Income (Loss) Per Share [Line Items]
Diluted weighted average common shares outstanding		831,512

Net Income (Loss) Per Share - S

Net Income (Loss) Per Share - Summary of Computation of Net Income or Loss Per Share (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Numerator:
Net income	$ 385,090	$ 139,153
Accretion of dividends on preferred convertible stock		(604,069)
Net income (loss) attributable to common stockholders	385,090	(464,916)
Adjustment for change in fair value of warrant liability		(78,834)
Net income (loss) attributable to common stockholders - diluted	$ 385,090	$ (543,750)
Weighted average shares used in calculating income (loss) per share:
Basic	9,359,562	665,842
Diluted	10,201,606	665,842
Net income (loss) per share:
Basic	$ 0.04	$ (0.70)
Diluted	$ 0.04	$ (0.82)

Net Income (Loss) Per Share -32

Net Income (Loss) Per Share - Summary of Potentially Dilutive Securities (Details) - shares	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities not included in the calculation of diluted net loss per share	6,581	6,487,160
Preferred Redeemable And Convertible Stock, Including Accumulated Dividends
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities not included in the calculation of diluted net loss per share		4,944,630
Employee Stock Options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities not included in the calculation of diluted net loss per share	6,581	754,192
Series G Preferred Stock | Warrants outstanding
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities not included in the calculation of diluted net loss per share		788,338

Acquisition - Additional Inform

Acquisition - Additional Information (Details) - Skycross, Inc. - USD ($) $ in Millions	Dec. 17, 2015	Mar. 31, 2017
Business Acquisition [Line Items]
Date of asset purchase agreement		Dec. 17, 2015
Business acquisition up front payment	$ 4
Business combination, contingent consideration arrangements, description		The $1.0 million of deferred consideration is payable upon the later of (i) the expiration of the Transition Services Agreement between the Company and Skycross which defines transition services to be provided by Skycross to the Company and (ii) the date on which the Company has received copies of third party approvals with respect to each customer and program that was purchased.
Contingent consideration arrangement	1
Amount to be paid under contingent consideration arrangements, value, low	0
Amount to be paid under contingent consideration arrangements, value, high	$ 1

Intangible Assets - Summary of

Intangible Assets - Summary of Acquired Intangible Assets (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	10 years	10 years
Gross Carrying Amount	$ 3,497,000	$ 3,497,000
Accumulated Amortization	484,709	387,363
Intangibles, Net	$ 3,012,291	$ 3,109,637
Developed technologies
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	5 years	5 years
Gross Carrying Amount	$ 280,000	$ 280,000
Accumulated Amortization	50,104	37,091
Intangibles, Net	$ 229,896	$ 242,909
Customer relationships
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	10 years	10 years
Gross Carrying Amount	$ 3,150,000	$ 3,150,000
Accumulated Amortization	405,832	327,082
Intangibles, Net	$ 2,744,168	$ 2,822,918
Non-compete agreement
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	3 years	3 years
Gross Carrying Amount	$ 67,000	$ 67,000
Accumulated Amortization	28,773	23,190
Intangibles, Net	$ 38,227	$ 43,810

Intangible Assets - Additional

Intangible Assets - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization	$ 97,346	$ 91,333

Intangible Assets - Schedule of

Intangible Assets - Schedule of Estimated Annual Amortization of Intangible Assets (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
2017 (remaining nine months)	$ 292,039
2,018	388,529
2,019	367,052
2,020	366,333
2,021	350,420
Thereafter	1,247,918
Intangibles, Net	$ 3,012,291	$ 3,109,637

Long-term Notes Payable (incl37

Long-term Notes Payable (including current portion) and Line of Credit - Additional Information (Details)	Feb. 01, 2017USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2013USD ($)Installment	Mar. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Jun. 30, 2012USD ($)
Loan Agreement With Silicon Valley Bank
Line Of Credit Facility [Line Items]
Liquidity ratio		125.00%
Loan agreement amount		$ 4,000,000
Term of payments		36 months
Date of maturity		Dec. 1, 2018
Minimum EBITDA				$ 750,000
Interest rate fixed percentage		5.00%
Long-term debt				$ 2,333,333	$ 2,666,666
Silicon Valley Bank | Revolving Credit Facility
Line Of Credit Facility [Line Items]
Line of credit facility allowable amount						$ 3,000,000
Facility interest rate				4.00%
Liquidity ratio				125.00%
Line of credit facility maturity date				2018-04
Line of credit				$ 0	0
Silicon Valley Bank | Revolving Credit Facility | U.S. Prime Rate
Line Of Credit Facility [Line Items]
Basis spread on variable interest rate				1.25%
Silicon Valley Bank | Revolving Credit Facility | Growth Capital Term Loan
Line Of Credit Facility [Line Items]
Line of credit facility allowable amount			$ 750,000
Line of credit				$ 0	$ 55,230
Line of credit facility, payment terms				The growth capital term loan requires interest only payments through June 30, 2014 at which point it is to be repaid in 32 equal monthly installments of interest and principal.
Number of monthly installments for principal and interest payment | Installment			32
Line of credit facility maturity date				Feb. 1, 2017
Payment of principal and accrued interest	$ 55,230
Line of credit facility interest rate			6.50%

Long-term Notes Payable (incl38

Long-term Notes Payable (including current portion) and Line of Credit - Schedule of Remaining Principal Payment (Details) - Loan Agreement With Silicon Valley Bank - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Line Of Credit Facility [Line Items]
2,017	$ 1,000,000
2,018	1,333,333
Long-term debt	$ 2,333,333	$ 2,666,666

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Income Taxes [Line Items]
Effective income tax rate	10.84%
U.S. federal statutory tax rate	34.00%
Gross unrecognized tax benefits	$ 1,670	$ 1,530
Federal
Income Taxes [Line Items]
Net operating loss carryforwards	13,190
State
Income Taxes [Line Items]
Net operating loss carryforwards	$ 7,770

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Common Stock Reserved for Future Issuance (Details) - shares	Mar. 31, 2017	Dec. 31, 2016
Class Of Stock [Line Items]
Common stock, reserved for future issuance	1,745,615	1,901,140
Warrants Issued and Outstanding
Class Of Stock [Line Items]
Common stock, reserved for future issuance	51,003	51,003
Stock Option Awards Issued and Outstanding
Class Of Stock [Line Items]
Common stock, reserved for future issuance	889,862	1,040,387
Authorized for grants under the 2016 Employee Stock Purchase Plan
Class Of Stock [Line Items]
Common stock, reserved for future issuance	100,000	100,000
Authorized for Grants under the 2016 Equity Incentive Plan
Class Of Stock [Line Items]
Common stock, reserved for future issuance	704,750	709,750

Stock Options - Summary of Outs

Stock Options - Summary of Outstanding Stock Option Activity (Details) - $ / shares	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of shares, Beginning balance	1,040,387	756,692
Number of shares, Granted	4,995	359,319
Number of shares, Exercised	(155,520)	(58,155)
Number of shares, Expired/Forefeited		(17,469)
Number of shares, Ending balance	889,862	1,040,387	756,692
Number of shares, Vested and exercisable	494,408
Number of shares, Vested and expected to vest	889,862
Weighted average exercise price	$ 2.25	$ 2.10
Weighted average exercise price, Granted	15.85	2.60
Weighted average exercise price, Exercised	2.08	2.36
Weighted average exercise price, Expired/Forefeited		2.13
Weighted average exercise price	2.36	$ 2.25	$ 2.10
Weighted average exercise price, Vested and exercisable	2.07
Weighted average exercise price, Vested and expected to vest	$ 2.36
Weighted average remaining contractual term	7 years 9 months 26 days	7 years 9 months 18 days	7 years 7 months 6 days
Weighted average remaining contractual term, Granted	9 years 9 months 18 days	9 years 4 months 24 days
Weighted average remaining contractual term, Exercised	6 years 18 days	3 years 6 months
Weighted average remaining contractual term, Expired/Forfeited		2 years 7 months 6 days
Weighted average remaining contractual term, Vested and exercisable	7 years 4 days
Weighted average remaining contractual term, Vested and expected to vest	7 years 9 months 26 days

Stock Options - Additional Info

Stock Options - Additional Information (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average grant-date fair value of options granted	$ 6.21		$ 1.23
Stock options vested aggregate intrinsic value	$ 6,470,698		$ 7,770,086
Stock options expected to vest aggregate intrinsic value	4,942,466		4,569,243
Stock-based compensation	73,475	$ 28,893
Total unrecognized compensation cost related to unvested stock options and restricted stock granted under the plans	$ 471,071		$ 522,818
Unrecognized compensation cost related to unvested stock options and restricted stock granted under the plans, period for recognition	3 years
Restricted Stock | Chief Financial Officer And Chief Operating Officer
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted common stock granted			57,475
Fair value of common stock granted, per share			$ 2
Vested percentage of common stock			100.00%
Vested period of restricted common stock			6 months
Shares vested month and year	2017-02
Stock-based compensation	$ 53,056		$ 61,894

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - Office Space and Research Facilities Lease - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Commitment And Contingencies [Line Items]
Operating leases, rent expense	$ 183,615	$ 189,862
Lease agreement description	The San Diego facility lease agreement included a tenant improvement allowance which provided for the landlord to pay for tenant improvements on behalf of the Company up to $515,000. Based on the terms of this landlord incentive and involvement of the Company in the construction process, the leasehold improvements purchased under the landlord incentive were determined to be property of the Company.
Lease expiration date	Jun. 30, 2020
Maximum
Commitment And Contingencies [Line Items]
Payments for tenant improvements allowance	$ 515,000

Commitments and Contingencies44

Commitments and Contingencies - Schedule Future Minimum Lease Payments Under Operating Leases (Detail)	Mar. 31, 2017USD ($)
Future minimum lease payment
2017 (remaining nine months)	$ 588,922
2,018	571,700
2,019	525,297
2,020	265,940
Total future minimum lease payment	$ 1,951,859

Concentration of Credit Risk -

Concentration of Credit Risk - Schedule of Concentration of Sales and Accounts Receivable (Details) - Customer Concentration Risk	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net Revenue | Customer A
Concentration Risk [Line Items]
Concentration risk percentage	22.00%	15.00%
Net Revenue | Customer B
Concentration Risk [Line Items]
Concentration risk percentage	14.00%	34.00%
Net Revenue | Customer C
Concentration Risk [Line Items]
Concentration risk percentage	13.00%	5.00%
Net Revenue | Customer D
Concentration Risk [Line Items]
Concentration risk percentage	8.00%	11.00%
Trade Accounts Receivable | Customer A
Concentration Risk [Line Items]
Concentration risk percentage	16.00%	12.00%
Trade Accounts Receivable | Customer B
Concentration Risk [Line Items]
Concentration risk percentage	14.00%	1.00%
Trade Accounts Receivable | Customer C
Concentration Risk [Line Items]
Concentration risk percentage	14.00%	14.00%
Trade Accounts Receivable | Customer D
Concentration Risk [Line Items]
Concentration risk percentage	11.00%	22.00%
Trade Accounts Receivable | Customer E
Concentration Risk [Line Items]
Concentration risk percentage	6.00%	11.00%

Concentration of Credit Risk 46

Concentration of Credit Risk - Schedule of Revenue by Geography (Details) - Customer Concentration Risk - Net Revenue	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
China
Concentration Risk [Line Items]
Concentration risk percentage	71.00%	73.00%
Other Asia
Concentration Risk [Line Items]
Concentration risk percentage	13.00%	11.00%
North America
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	12.00%
Europe
Concentration Risk [Line Items]
Concentration risk percentage	6.00%	4.00%

Concentration of Credit Risk 47

Concentration of Credit Risk - Additional Information (Details) - Vendor	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
China
Concentration Risk [Line Items]
Number of vendors	2	2

Subsequent Events - Additional

Subsequent Events - Additional information (Detail) $ in Millions	Apr. 27, 2017USD ($)
Subsequent Events | Asset Purchase Agreement | Antenna Plus
Subsequent Event [Line Items]
Total consideration paid in cash	$ 6.4