Airgain (AIRG) 10-K 15 Mar 17 2016 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Feb. 28, 2017
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY
Trading Symbol	AIRG
Entity Registrant Name	AIRGAIN INC
Entity Central Index Key	1,272,842
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		9,372,232
Entity Public Float		$ 90.2

Balance Sheets

Balance Sheets - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 45,161,403	$ 5,335,913
Trade accounts receivable, net	5,154,996	3,731,998
Inventory	146,815	119,733
Prepaid expenses and other current assets	349,550	191,502
Total current assets	50,812,764	9,379,146
Property and equipment, net	807,086	1,026,784
Goodwill	1,249,956	1,249,956
Customer relationships, net	2,822,918	3,137,918
Intangible assets, net	286,719	345,069
Other assets	84,060	121,541
Total assets	56,063,503	15,260,414
Current liabilities:
Accounts payable	3,949,005	2,873,471
Accrued bonus	1,748,551	1,335,500
Accrued liabilities	1,072,242	660,987
Deferred purchase price	1,000,000	1,000,000
Current portion of long-term notes payable	1,388,563	1,625,030
Current portion of deferred rent obligation under operating lease	81,332	81,332
Total current liabilities	9,239,693	7,576,320
Preferred stock warrant liability		709,504
Long-term notes payable	1,333,333	2,721,865
Deferred tax liability	6,166
Deferred rent obligation under operating lease	451,909	558,641
Total liabilities	11,031,101	11,566,330
Stockholders’ equity (deficit):
Common shares, par value $0.0001, 200,000,000 and 80,000,000 shares authorized at December 31, 2016 and December 31, 2015, respectively; 9,275,062 and 665,842 shares issued and outstanding at December 31, 2016 and December 31, 2015, respectively	928	1,094,375
Additional paid in capital	88,582,470
Accumulated deficit	(43,550,996)	(46,475,746)
Total stockholders’ equity (deficit)	45,032,402	(39,412,822)
Commitments and contingencies (note 12)
Total liabilities, preferred redeemable convertible stock and stockholders’ equity (deficit)	$ 56,063,503	15,260,414
Series E Preferred Redeemable Convertible Stock
Preferred redeemable convertible stock:
Preferred redeemable convertible stock, value		16,274,823
Series F Preferred Redeemable Convertible Stock
Preferred redeemable convertible stock:
Preferred redeemable convertible stock, value		10,517,081
Series G Preferred Redeemable Convertible Stock
Preferred redeemable convertible stock:
Preferred redeemable convertible stock, value		16,315,002
Series A Preferred Convertible Stock
Stockholders’ equity (deficit):
Preferred convertible stock, value		976,000
Series B Preferred Convertible Stock
Stockholders’ equity (deficit):
Preferred convertible stock, value		2,457,253
Series C Preferred Convertible Stock
Stockholders’ equity (deficit):
Preferred convertible stock, value		549,010
Series D Preferred Convertible Stock
Stockholders’ equity (deficit):
Preferred convertible stock, value		$ 1,986,286

Balance Sheets (Parenthetical)

Balance Sheets (Parenthetical) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	200,000,000	80,000,000
Common stock, shares issued	9,275,062	665,842
Common stock, shares outstanding	9,275,062	665,842
Series E Preferred Redeemable Convertible Stock
Preferred redeemable convertible stock, shares authorized		10,500,000
Preferred redeemable convertible stock, shares issued	0	8,202,466
Preferred redeemable convertible stock, shares outstanding	0	8,202,466
Preferred redeemable convertible stock, liquidation preference	$ 0	$ 16,274,823
Series F Preferred Redeemable Convertible Stock
Preferred redeemable convertible stock, shares authorized		5,000,000
Preferred redeemable convertible stock, shares issued	0	4,734,374
Preferred redeemable convertible stock, shares outstanding	0	4,734,374
Preferred redeemable convertible stock, liquidation preference	$ 0	$ 10,517,081
Series G Preferred Redeemable Convertible Stock
Preferred redeemable convertible stock, shares authorized		23,500,000
Preferred redeemable convertible stock, shares issued	0	10,334,862
Preferred redeemable convertible stock, shares outstanding	0	10,334,862
Preferred redeemable convertible stock, liquidation preference	$ 0	$ 17,987,553
Series A Preferred Convertible Stock
Preferred convertible stock, shares authorized		313,500
Preferred convertible stock, shares issued	0	313,500
Preferred convertible stock, shares outstanding	0	313,500
Preferred convertible stock, liquidation preference	$ 0	$ 2,416,194
Series B Preferred Convertible Stock
Preferred convertible stock, shares authorized		1,183,330
Preferred convertible stock, shares issued	0	1,157,606
Preferred convertible stock, shares outstanding	0	1,157,606
Preferred convertible stock, liquidation preference	$ 0	$ 5,081,890
Series C Preferred Convertible Stock
Preferred convertible stock, shares authorized		682,000
Preferred convertible stock, shares issued	0	682,000
Preferred convertible stock, shares outstanding	0	682,000
Preferred convertible stock, liquidation preference	$ 0	$ 682,000
Series D Preferred Convertible Stock
Preferred convertible stock, shares authorized		4,276,003
Preferred convertible stock, shares issued	0	4,091,068
Preferred convertible stock, shares outstanding	0	4,091,068
Preferred convertible stock, liquidation preference	$ 0	$ 4,516,013

Statements of Operations

Statements of Operations - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
Sales	$ 43,433,867	$ 27,793,073	$ 25,509,572
Cost of goods sold	24,156,792	16,148,163	14,132,357
Gross profit	19,277,075	11,644,910	11,377,215
Operating expenses:
Research and development	5,622,132	4,257,400	3,311,337
Sales and marketing	5,670,625	4,035,591	3,516,095
General and administrative	4,532,151	3,453,288	2,972,257
IPO costs		229,332	726,926
Total operating expenses	15,824,908	11,975,611	10,526,615
Income (loss) from operations	3,452,167	(330,701)	850,600
Other expense (income):
Interest income	(7,803)
Interest expense	178,371	39,489	42,692
Fair market value adjustment - warrants	(460,289)	(85,325)	(2,747,570)
Exercise and expiration of warrants		(15,145)	(38,993)
Total other income	(289,721)	(60,981)	(2,743,871)
Income (loss) before income taxes	3,741,888	(269,720)	3,594,471
Provision for income taxes	8,181	622	6,171
Net income (loss)	3,733,707	(270,342)	3,588,300
Accretion of dividends on preferred convertible stock	(1,537,021)	(2,444,954)	(2,431,836)
Net income (loss) attributable to common stockholders	$ 2,196,686	$ (2,715,296)	$ 1,156,464
Net income (loss) per share:
Basic	$ 0.65	$ (4.17)	$ 2.08
Diluted	$ 0.40	$ (4.30)	$ (2.86)
Weighted average shares used in calculating income (loss) per share
Basic	3,373,316	651,593	555,805
Diluted	4,667,503	651,593	555,805

Statements of Stockholders' Equ

Statements of Stockholders' Equity (Deficit) - USD ($)	Total	Preferred Convertible Stock	Common Stock	Additional Paid-in Capital	Note to Employee	Accumulated Deficit
Beginning balance at Dec. 31, 2013	$ (39,505,672)	$ 5,968,549	$ 1,016,783			$ (46,491,004)
Beginning balance, shares at Dec. 31, 2013		6,244,174	380,566
Stock-based compensation	657,730			$ 657,730
Shares issued pursuant to stock awards, shares			244,616
Exercise of stock options	$ 220		$ 220
Exercise of stock options, shares	100		100
Change in note to employee	$ (266,282)				$ (266,282)
Effect of accretion to redemption value	(2,144,434)			(657,730)		(1,486,704)
Net income (loss)	3,588,300					3,588,300
Ending balance at Dec. 31, 2014	(37,670,138)	$ 5,968,549	$ 1,017,003		(266,282)	(44,389,408)
Ending balance, shares at Dec. 31, 2014		6,244,174	625,282
Stock-based compensation	341,554			341,554
Shares issued pursuant to stock awards, shares			16,300
Exercise of stock options	$ 77,372		$ 77,372
Exercise of stock options, shares	24,260		24,260
Change in note to employee	$ 266,282				$ 266,282
Effect of accretion to redemption value	(2,157,550)			(341,554)		(1,815,996)
Net income (loss)	(270,342)					(270,342)
Ending balance at Dec. 31, 2015	(39,412,822)	$ 5,968,549	$ 1,094,375			(46,475,746)
Ending balance, shares at Dec. 31, 2015		6,244,174	665,842
Stock-based compensation	298,535			298,535
Conversion of warrants	249,215			249,215
Conversion of warrants, shares			127,143
Exercise of stock options	$ 137,403		$ 112,101	25,302
Exercise of stock options, shares	58,155		58,155
Effect of accretion to redemption value	$ (1,356,707)			(547,750)		(808,957)
Change in par value from no par value to $0.0001			$ (1,206,391)	1,206,391
Issuance of common stock upon initial public offering, net of issuance costs	10,816,978		$ 170	10,816,808
Issuance of common stock upon initial public offering, net of issuance costs, shares			1,700,100
Issuance of warrants to underwriters	126,218			126,218
Conversion of preferred redeemable convertible stock to common stock upon initial public offering	44,463,613		$ 378	44,463,235
Conversion of preferred redeemable convertible stock to common stock upon initial public offering, shares			3,778,753
Conversion of preferred convertible stock to common stock upon initial public offering		$ (5,968,549)	$ 126	5,968,423
Conversion of preferred convertible stock to common stock upon initial public offering, shares		(6,244,174)	1,259,187
Issuance of common stock upon secondary public offering, net of issuance costs	25,976,262		$ 169	25,976,093
Issuance of common stock upon secondary public offering, net of issuance costs, shares			1,685,882
Net income (loss)	3,733,707					3,733,707
Ending balance at Dec. 31, 2016	$ 45,032,402		$ 928	$ 88,582,470		$ (43,550,996)
Ending balance, shares at Dec. 31, 2016			9,275,062

Statements of Stockholders' Eq6

Statements of Stockholders' Equity (Deficit) (Parenthetical) - $ / shares	Dec. 31, 2016	Dec. 31, 2015
Statement Of Stockholders Equity [Abstract]
Common stock, par value	$ 0.0001	$ 0.0001

Statements of Cash Flows

Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net income (loss)	$ 3,733,707	$ (270,342)	$ 3,588,300
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation	495,347	458,734	371,603
Amortization	373,350	14,013	0
Fair market value adjustment - warrants	(460,289)	(85,325)	(2,747,570)
Exercise and expiration of warrants		(15,145)	(38,993)
Stock-based compensation	298,535	341,554	657,730
Forgiveness of note to employee		266,282
Gain on disposal of fixed assets			(25,441)
Deferred tax liability	6,166
Changes in operating assets and liabilities:
Trade accounts receivable	(1,422,998)	210,140	(90,942)
Inventory	(27,082)	(119,733)
Prepaid expenses and other assets	(120,567)	(36,265)	2,408
Accounts payable	1,075,534	298,918	173,896
Accrued bonus	413,051	516,409	(119,841)
Accrued liabilities	411,255	361,067	(337,354)
Deferred obligation under operating lease	(106,732)	(91,482)	214,578
Net cash provided by operating activities	4,669,277	1,848,825	1,648,374
Cash flows from investing activities:
Cash paid for acquisition		(4,000,000)
Purchases of property and equipment	(275,649)	(132,854)	(984,697)
Proceeds from sale of equipment			34,786
Net cash used in investing activities	(275,649)	(4,132,854)	(949,911)
Cash flows from financing activities:
Proceeds from notes payable		4,000,000	500,000
Repayment of notes payable	(1,624,999)	(273,175)	(129,930)
Issuance of note to employee			(266,282)
Proceeds from initial public offering and issuance of warrants to underwriters	13,600,800
Costs related to initial public offering	(2,657,604)
Proceeds from secondary public offering	26,797,094
Costs related to secondary public offering	(820,832)
Proceeds from exercise of warrants		225,000
Proceeds from exercise of stock options	137,403	77,372	220
Net cash provided by financing activities	35,431,862	4,029,197	104,008
Net increase in cash and cash equivalents	39,825,490	1,745,168	802,471
Cash, beginning of period	5,335,913	3,590,745	2,788,274
Cash, end of period	45,161,403	5,335,913	3,590,745
Supplemental disclosure of cash flow information
Interest paid	177,460	39,489	42,692
Income taxes paid		6,171	10,786
Supplemental disclosure of non-cash investing and financing activities:
Accretion of Series E, F, and G preferred redeemable convertible stock to redemption amount	1,356,707	$ 2,157,549	2,144,434
Property and equipment acquired through lease incentives			$ 650,100
Conversion of warrants	249,215
Conversion of preferred stock into common stock	$ 50,432,162

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Significant Accounting Policies	(1) Significant Accounting Policies (a) Description of Business 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. (b) Basis of Presentation The financial statements of the Company have been prepared in conformity with U.S. generally accepted accounting principles (GAAP). (c) 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 operations as a single operating segment. (d) Cash and Cash Equivalents For purposes of financial statement presentation, the Company classifies all highly liquid financial instruments with an original maturity of three months or less when purchased to be cash equivalents. At times, the Company has had cash and cash equivalents deposited at financial institutions in excess of federally insured deposit limits. However, cash is held on deposit at major financial institutions and is considered subject to minimal credit risk. To date, the Company has not realized any losses on its cash and cash equivalents. (e) Trade Accounts Receivable Trade accounts receivable is adjusted for all known uncollectible accounts. The policy for determining when receivables are past due or delinquent is based on the contractual terms agreed upon. Accounts are written off once all collection efforts have been exhausted. An allowance for doubtful accounts is established when, in the opinion of management, collection of the account is doubtful. The allowance for doubtful accounts was $0 as of December 31, 2016 and December 31, 2015. (f) 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). (g) Property and Equipment Property and equipment are stated at cost and are depreciated using the straight-line method over the estimated useful lives of the assets, generally three years. The estimated useful lives for leasehold improvements are the estimated useful life of the asset or lease term, if shorter. Property and equipment are reviewed for impairment whenever events or changes in circumstances indicate the carrying amount of an asset may not be recoverable. (h) Goodwill Goodwill, which has an indefinite useful life, represents the excess of cost over fair value of net assets acquired. The change in the carrying value of goodwill during the year ended December 31, 2015, was due to an acquisition during 2015. See Note 3. The Company reviews goodwill for impairment annually on December 1st and whenever events or changes in circumstances indicate that goodwill may be impaired. The Company completed its annual assessment for goodwill impairment in December 2016 and determined that goodwill is not impaired as of December 31, 2016. (i) Long-lived Assets The Company’s identifiable intangible assets are comprised of acquired developed technologies, customer relationships and non-compete agreements. The cost of the identifiable intangible assets with finite lives is amortized on a straight-line basis over the assets’ respective estimated useful lives. The Company periodically re-evaluates the original assumptions and rationale utilized in the establishment of the carrying value and estimated lives of long-lived assets and finite-lived intangible assets. Long- lived assets and finite-lived intangibles are assessed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If an asset is considered to be impaired, the impairment recognized is equal to the amount by which the carrying value of the asset exceeds its fair value. (j) Revenue Recognition The Company generates revenue primarily from the sale of its antenna products. The Company recognizes revenue when products are shipped and the customer takes ownership and assumes risk of loss, collection of the relevant receivable is reasonably assured, persuasive evidence of an arrangement exists, and the sales price is fixed or determinable. Title and risk of loss transfer to customers either when the products are shipped to or received by the customer, based on the terms of the specific agreement with the customer. A portion of the Company’s sales are made through distributors under agreements allowing for pricing credits and/or rights of return under certain circumstances. To date, pricing credits and returns under these provisions have been insignificant; accordingly, the Company recognizes revenue upon shipment to the distributor and the Company’s allowance for sales returns and pricing credits was insignificant for the years ended December 31, 2016, 2015 and 2014. (k) Shipping and Transportation Costs Shipping and other transportation costs are expensed as incurred. Shipping and other transportation costs were $321,093, $221,974 and $154,025 for the years ended December 31, 2016, 2015 and 2014, respectively. These costs are included in general and administrative expenses in the accompanying statements of operations. (l) Research and Development Costs Costs incurred in connection with research and development are expensed as incurred. (m) Income Taxes The Company records income taxes under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statements carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. When applicable, a valuation allowance is established to reduce any deferred tax asset when it is determined that it is more likely than not that some portion of the deferred tax asset will not be realized. The Company recognizes the effect of income tax positions only if those positions are more likely than not of being sustained. Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. The Company records interest related to unrecognized tax benefits in interest expense and penalties in general and administrative expenses. The Company uses the with-and-without approach, disregarding indirect tax impacts, for determining the period in which tax benefits for excess share-based deductions are recognized. (n) Stock-Based Compensation The Company recognizes all employee stock-based compensation as a cost in the financial statements. Equity classified awards are measured at the grant-date fair value of the award. The Company estimates the grant-date fair value using the Black-Scholes-Merton option-pricing model. The impact of forfeitures that may occur prior to vesting is also estimated and considered in the amount recognized for all stock-based compensation. Compensation cost is recognized on a straight-line basis over the requisite service period for the entire award. Stock-based compensation expense for the years ended December 31, 2016, 2015 and 2014 was $298,535, $341,554 and $657,730, respectively. (o) Preferred Redeemable Convertible Stock Prior to the initial public offering (IPO) the Company had Series E, F, and G preferred redeemable convertible stock (collectively, Senior Preferred Stock). As these securities were redeemable for cash at the option of the holders, they were excluded from stockholders’ equity and presented as temporary equity in the accompanying balance sheets. At any time after May 2013, but within ninety days after the receipt of a written request from the holders of not less than 66 2/3% of the then outstanding Senior Preferred Stock, all shares of the Senior Preferred Stock could be redeemed at the original issue price plus any accrued and unpaid dividends in two annual installments. At least one of the Company’s two largest shareholders would have needed to vote in favor of redemption to meet the 66 2/3% requirement. The Company obtained written commitments from these two shareholders committing that neither shareholder would vote in favor of redemption prior to January 1, 2018. As only the passage of time is required for Senior Preferred Stock to be redeemable, the Company adjusted the carrying value of the Senior Preferred Stock to its redemption value at each balance sheet date. In connection with the completion of the IPO, all outstanding shares of the Company’s preferred redeemable convertible stock automatically converted into shares of common stock. In addition, the company issued shares of its common stock in satisfaction of accumulated dividends on such preferred stock as of the completion of the IPO. (p) Preferred Stock Warrant Liability As of December 31, 2015 and 2014, the Company had issued freestanding warrants exercisable to purchase shares of its Series G preferred redeemable convertible stock. These warrants were classified as a liability in the accompanying balance sheets, as the terms for redemption of the underlying security were outside the Company’s control. The warrants were recorded at fair value using a combination of an option pricing model and current value model under the probability- weighted return method. The fair value of all warrants were remeasured at each balance sheet date with any changes in fair value being recognized in the statement of operations. In May 2016, the warrants were amended such that the warrants became immediately exercisable into shares of the Company’s common stock. Concurrent with such amendment, the holders of the outstanding warrants elected to net exercise the warrants, and the Company issued an aggregate of 127,143 shares of common stock. (q) Fair Value Measurements The carrying values of the Company’s financial instruments, including cash, trade accounts receivable, accounts payable, and accrued liabilities 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 following table provides a summary of the recognized liabilities carried at fair value on a recurring basis: Balance as of December 31, 2016 Level 1 Level 2 Level 3 Liabilities: Warrant liability (note 10) $ — — $ — Balance as of December 31, 2015 Level 1 Level 2 Level 3 Liabilities: Warrant liability (note 10) $ — — $ 709,504 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 years ended December 31, 2016 and 2015. The following table provides a rollforward of the Company’s Level 3 fair value measurements during the years ended December 31, 2016 and 2015: For the Year Ended December 31, 2016 2015 Beginning balance $ 709,504 $ 809,974 Change in fair value of warrant liability (460,289 ) (85,325 ) Exercise and expiration of warrants — (15,145 ) Conversion of warrants (249,215 ) — Ending balance $ — $ 709,504 (r) Use of Estimates The preparation of financial statements in conformity with U.S. generally accepted accounting principles (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 preferred redeemable convertible stock warrant liability, stock- based compensation and intangible assets. (s) Comprehensive Income (Loss) The Company had no other transactions or activity, other than net income (loss), that would be considered as part of comprehensive income (loss). (t) Net Income or 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. 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: For the Year Ended December 31, 2016 2015 2014 Numerator: Net income (loss) $ 3,733,707 $ (270,342 ) $ 3,588,300 Accretion of dividends on preferred stock (1,537,021 ) (2,444,954 ) (2,431,836 ) Net income (loss) attributable to common stockholders - basic $ 2,196,686 $ (2,715,296 ) $ 1,156,464 Accretion of dividends on preferred stock 125,205 — — Adjustment for change in fair value of warrant liability (460,289 ) (85,325 ) (2,747,570 ) Net income (loss) attributable to common stockholders - diluted $ 1,861,602 $ (2,800,621 ) $ (1,591,106 ) Denominator: Weighted average common shares outstanding Basic 3,373,316 651,593 555,805 Diluted 4,667,503 651,593 555,805 Net income (loss) per share: Basic $ 0.65 $ (4.17 ) $ 2.08 Diluted $ 0.40 $ (4.30 ) $ (2.86 ) Potentially dilutive securities not included in the calculation of diluted net loss per share because to do so would be anti-dilutive are as follows (in common stock equivalent shares): For the Year Ended December 31, 2016 2015 2014 Preferred redeemable convertible stock and preferred convertible stock, including accumulated dividends 2,406,894 4,891,205 4,653,197 Employee stock options — 756,692 504,550 Warrants outstanding 51,003 — — Series G preferred stock warrants outstanding — 788,338 809,972 Total 2,457,897 6,436,235 5,967,719

Property and Equipment

Property and Equipment	12 Months Ended
	Dec. 31, 2016
Property Plant And Equipment [Abstract]
Property and Equipment	(2) Property and Equipment Depreciation and amortization of property and equipment is calculated on the straight-line method based on estimated useful lives of six to ten years for tenant improvements, and three years for all other property and equipment. Property and equipment consist of the following: As of December 31, 2016 2015 Lab equipment $ 1,314,060 $ 1,284,626 Computer equipment 165,415 182,266 Computer software 299,227 302,549 Furniture and fixtures 184,233 184,233 Tenant improvements 763,898 763,898 Other office equipment 20,591 38,753 2,747,424 2,756,325 Less accumulated depreciation (1,940,338 ) (1,729,541 ) $ 807,086 $ 1,026,784 Depreciation expense was $495,347, $458,734 and $371,603 for the years ended December 31, 2016, 2015 and 2014, respectively.

Acquisition

Acquisition	12 Months Ended
	Dec. 31, 2016
Business Combinations [Abstract]
Acquisition	(3) Acquisitions On December 17, 2015, the Company executed and entered into an asset purchase agreement for certain North American assets of Skycross, Inc., a manufacturer of advanced antenna and radio- frequency solutions. As a result of the acquisition, the Company expects to benefit from the acquisition primarily through the addition of new customers. The goodwill of $1,249,956 arising from the acquisition relates to expected synergies and cost reductions through economies of scale. The amount of goodwill expected to be deductible for tax purposes is $1,249,956. In addition to the $4.0 million paid up front, the purchase price also includes 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, Inc. 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 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 flow. The following table summarizes the consideration paid and the estimated fair value of the assets acquired and liabilities assumed at the acquisition date. Consideration: Cash $ 4,000,000 Contingent consideration arrangement 1,000,000 Fair value of total consideration transferred $ 5,000,000 Recognized amounts of identifiable assets acquired and liabilities assumed: Accounts receivable $ 429,267 Intangible assets 3,497,000 Current liabilities (176,223 ) Total identifiable net assets acquired $ 3,750,044 Goodwill 1,249,956 Total $ 5,000,000 The fair value of accounts receivable is $429,267. The contingent consideration of $1.0 million is included in the deferred purchase price balance on the accompanying balance sheets as of December 31, 2016 and 2015. Revenue associated with the acquired Skycross assets since the date of acquisition was $5.0 million and $0.2 million for the year ended December 31, 2016 and 2015, respectively. Cost of goods sold associated with the acquired Skycross assets since the date of acquisition was $1.7 million and $0.1 million for the year ended December 31, 2016 and 2015, respectively. The acquired assets were not managed as a discrete business by the previous owner. Accordingly, the historical financial information for the assets acquired was impracticable to obtain, and inclusion of pro forma information would require the Company to make estimates and assumptions regarding these assets’ historical financial results that may not be reasonable or accurate. As a result, pro forma results are not presented. It is not practicable to determine net income included in the Company’s operating results relating to Skycross assets since the date of acquisition because the assets have been fully integrated into the Company’s operations, and the operating results of the Skycross assets can therefore not be separately identified.

Goodwill

Goodwill	12 Months Ended
	Dec. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill	(4) Goodwill Changes to the Company’s goodwill balance during the year ended December 31, 2016, and 2015 are as follows: Balance at December 31, 2014 $ — Skycross acquisition 1,249,956 Balance at December 31, 2015 $ 1,249,956 Current period adjustments — Balance at December 31, 2016 $ 1,249,956

Intangible Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible Assets	(5) Intangible Assets The following is a summary of the Company’s acquired intangible assets: As of 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 As of December 31, 2015 Weighted Average Amortization Period Gross Carrying Amount Accumulated Amortization Intangibles, Net Developed technologies 10 $ 280,000 $ 1,074 $ 278,926 Customer relationships 10 3,150,000 12,082 3,137,918 Non-compete agreement 3 67,000 857 66,143 Total intangible assets, net 10 $ 3,497,000 $ 14,013 $ 3,482,987 In September 2016, the Company re-evaluated the useful life of the developed technologies intangible asset and determined the useful life should be reduced from 10 years to 5 years. 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. Estimated Future Amortization 2017 $ 389,385 2018 388,529 2019 367,052 2020 366,333 2021 350,420 Thereafter 1,247,918 Total $ 3,109,637 Amortization expense was $373,350, $14,013 and $0 for the years ended December 31, 2016, 2015 and 2014, respectively.

Long-term Notes Payable (includ

Long-term Notes Payable (including current portion) and Line of Credit	12 Months Ended
	Dec. 31, 2016
Long Term Debt [Abstract]
Long-term Notes Payable (including current portion) and Line of Credit	(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 an interest rate of prime (3.75% as of December 31, 2016) 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 December 31, 2016 and 2015. In December 2013, the Company further amended its revolving line of credit under the amended and restated loan and security with Silicon Valley Bank to include a growth capital term loan of up to $750,000. 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. 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 is 6.5%. The Company must maintain a liquidity ratio of cash and cash equivalents plus accounts receivable to outstanding debt under the facility of greater than or equal to 1.00 to 1.00. As of December 31, 2016 and 2015, $55,230 and $346,895 was outstanding under this loan, respectively. 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 December 31, 2016 the minimum EBITDA is 500,000). The interest rate is 5%. As of December 31, 2016 and 2015, $2,666,666 and $4,000,000 was outstanding under this loan, respectively. The remaining principal payments on the $4.0 million loan subsequent to December 31, 2016 are as follows: Year ending: 2017 $ 1,333,333 2018 1,333,333 $ 2,666,666 The Company was in compliance with all financial term loan and line of credit financial covenants as of December 31, 2016 and 2015.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	(7) Income Taxes (a) Income Taxes The December 31, 2016, 2015 and 2014 income tax provision is as follows: For the Year Ended December 31, 2016 2015 2014 Current: U.S. federal $ — $ — $ — State and local 2,015 622 6,171 Total current provision 2,015 622 6,171 Deferred: U.S. federal 6,124 — — State and local 42 — — Total deferred provision 6,166 — — Total tax provision $ 8,181 $ 622 $ 6,171 (b) Tax Rate Reconciliation A reconciliation of the total income tax provision tax rate to the statutory federal income tax rate of 34% for the years ended December 31, 2016, 2015 and 2014 is as follows: For the Year Ended December 31, 2016 2015 2014 Income taxes at statutory rates $ 1,272,242 $ (91,705 ) $ 1,222,120 State income tax, net of federal benefit 2,054 411 4,132 Permanent items 171,704 171,963 111,001 Section 382 limitation expiration — — 1,712,466 Warrant liability (156,498 ) (34,160 ) (947,432 ) Federal NOL expired (206,133 ) — — Other 11,104 — — Research and development credit (141,494 ) 628,573 (143,114 ) Change in federal valuation allowance (944,798 ) (674,460 ) (1,953,002 ) $ 8,181 $ 622 $ 6,171 (c) Significant Components of Current and Deferred Taxes The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities at December 31, 2016 and 2015 are as follows: For the Year Ended December 31, 2016 2015 Deferred tax assets: Net operating loss carryforwards $ 6,786,922 $ 9,008,344 Capitalization of patent costs, goodwill and amortization 332,901 441,076 Capitalization of acquisition costs 43,523 35,264 Research and AMT credits 1,689,883 1,421,251 Stock based compensation 160,182 180,675 Deferred lease obligation 182,550 274,164 Other timing differences 51,314 41,045 9,247,275 11,401,819 Less valuation allowance (9,028,241 ) (11,103,399 ) Total deferred tax assets $ 219,034 $ 298,420 Deferred tax liabilities: Fixed assets (219,034 ) (298,420 ) Goodwill (6,166 ) — Total deferred tax liabilities $ (225,200 ) $ (298,420 ) Total deferred tax assets (liabilities) $ (6,166 ) $ — The Company has established a valuation allowance against its net deferred tax assets due to the uncertainty surrounding the realization of such assets. The Company periodically evaluates the recoverability of the deferred tax assets. At such time it is determined that it is more likely than not that deferred assets are realizable, the valuation allowance will be reduced. The Company has recorded a valuation allowance of $9,028,241 as of December 31, 2016 as it does not believe it is more likely than not that certain deferred tax assets will be realized due to the recent history of both pre-tax book income and losses, the lack of taxable income available in carryback periods or feasible tax-planning strategies, the limited existing taxable temporary differences, and the subjective nature of forecasting future taxable income into the future. Should the Company continue to achieve substantial pre-tax book income during 2017 or be better able to forecast taxable income into the future, the Company may need to release a portion of their federal valuation allowance during 2017. Due to the Company’s relatively low apportionment in California, a release of state-related valuation allowance is unlikely. The Company decreased its valuation allowance by approximately $2,075,158 during the year ended December 31, 2016. At December 31, 2016, the Company had federal and California tax loss carryforwards of approximately $17,914,514, and $7,873,156, respectively. The federal and state net operating loss carry forwards begin to expire in 2020 and 2017, respectively, if unused. At December 31, 2016, the Company had federal and state tax credit carry forwards of approximately $1,716,398, and $1,346,874, respectively, after reduction for uncertain tax positions. The Company has not performed a formal research and development credit study with respect to these credits. The federal credits will begin to expire in 2026, if unused, and the state credits carry forward indefinitely. Pursuant to the Internal Revenue Code of 1986, as amended (IRC), specifically IRC §382 and IRC §383, the Company’s ability to use net operating loss and research and development tax credit carry forwards (“tax attribute carry forwards”) to offset future taxable income is limited if the Company experiences a cumulative change in ownership of more than 50% within a three-year testing period. The Company has not completed an ownership change analysis pursuant to IRC Section 382 for taxable years ended after December 31, 2012. If ownership changes within the meaning of IRC Section 382 are identified as having occurred subsequent to 2012, the amount of remaining tax attribute carry forwards available to offset future taxable income and income tax expense in future years may be significantly restricted or eliminated. Further, the Company’s deferred tax assets associated with such tax attributes could be significantly reduced upon realization of an ownership change within the meaning of IRC §382. The following table summarizes the reconciliation of the unrecognized tax benefits activity during the years ended December 31, 2016 and 2015: For the Year Ended December 31, 2016 2015 Beginning unrecognized tax benefits $ 1,408,000 $ 1,408,000 Decreases related to prior year tax positions (53,000 ) — Increases related to current year tax positions 177,000 — Ending unrecognized tax benefits $ 1,532,000 $ 1,408,000 The unrecognized tax benefit amounts are reflected in the determination of the Company’s deferred tax assets. If recognized, none of these amounts would affect the Company’s effective tax rate, since it would be offset by an equal corresponding adjustment in the deferred tax asset valuation allowance. The Company does not foresee material changes to its liability for uncertain tax benefits within the next twelve months. The Company’s policy is to recognize interest and/or penalties related to income tax matters in income tax expense. The Company had no accrual for interest or penalties on the Company’s balance sheets as of December 31, 2016 or December 31, 2015, and has not recognized interest and/or penalties in the Statement of Operations for the year ended December 31, 2016. The Company’s tax years that remain open and subject to examination by tax jurisdiction are years 2013 and forward for federal and years 2012 and forward for the state of California.

Stockholders' Equity (Deficit)

Stockholders' Equity (Deficit)	12 Months Ended
	Dec. 31, 2016
Class Of Stock Disclosures [Abstract]
Stockholders' Equity (Deficit)	(8) Stockholders’ Equity (Deficit) (a) Preferred Convertible Stock In June 2000, the Company sold 313,500 shares of Series A preferred convertible stock (Series A Preferred Stock) at $3.84 per share for gross proceeds of $1.2 million. In March 2001, the Company sold 290,993 shares of Series B preferred convertible stock (Series B Preferred Stock) at $4.39 per share for gross proceeds of $1.3 million in cash. At various times during 2003 the company issued a total of 866,613 additional shares of Series B Preferred Stock for cash and as compensation for services received and to satisfy debt obligations totaling approximately $1.2 million. In September 2003, the Company sold 682,000 shares of Series C preferred convertible stock (Series C Preferred Stock) at $1.00 per share for gross proceeds of $0.7 million. In November 2003, the Company sold 4,091,068 shares of Series D Preferred Convertible Stock (Series D Preferred Stock) at $0.542 per share for gross proceeds of $2.2 million. The holders of the Series A, B, C and D Preferred Stock (collectively, Junior Preferred Stock), were entitled to receive cumulative dividends at a rate of $0.0488, $0.00, $0.00 and $0.0488 per share, per annum, respectively, and were payable upon liquidation, redemption or conversion in order of their preference prior to any dividends on common stock. The holders of the Junior Preferred Stock were entitled to receive liquidation preferences upon certain deemed liquidation events at the rate equal to their purchase price per share plus all accrued and unpaid dividends. Upon completion of this distribution, any remaining assets were distributed to the holders of the common stock and to holders of the Junior Preferred Stock and to the holders of the Senior Preferred Stock (on an as converted basis) until all amounts received by the holders of the Series A Preferred Stock were equal to $19.20 per share, the Series D Preferred Stock were equal to $2.168 per share, Series E Preferred Stock were equal to $4.44 per share, Series F Preferred Stock were equal to $5.20 per share, and Series G Preferred Stock were equal to $5.20 per share, the remaining assets were distributed among holders of shares of the common stock. The holders of the Senior Preferred Stock had priority and were made in preference to any payments to the Junior Preferred Stock up to the Senior Preferred Stock’s liquidation preference. The holders of the Junior Preferred Stock had priority and were made in preference to any payments to the holders of the common stock up to the Junior Preferred Stock’s liquidation preference. After distribution of both the Senior Preferred Stock and Junior Preferred Stock’s liquidation preferences, any remaining assets of the Company were distributed to the holders of the common stock. Each share of Junior Preferred Stock was convertible, at the option of the holder, at any time, into a number of shares of common stock at a conversion price of $21.70, $24.23, $8.59, $5.42 for the Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock, respectively, subject to adjustments for stock dividends, combinations, subdivisions, reclassifications and reorganizations. Each share of Junior Preferred Stock was automatically convertible into common stock immediately upon the earlier of (i) the Company’s sale of its common stock in a firm commitment, underwritten public offering registered under the Securities Act of 1933, as amended, in which aggregate proceeds to the Company are at least $15.0 million and at a per share offering price of at least $76.80 per share, as adjusted for any stock dividends, combinations, reclassifications, recapitalizations or splits, or (ii) the date specified by written consent or agreement by the holders of the majority of the then outstanding shares voting together as a single class on an as-converted basis (without giving effect to the conversion dividends). As long as 1,678,450 shares of Junior Preferred Stock remained outstanding, the Company was prohibited from certain transactions without the consent of at least 50% of the then outstanding shares of Junior Preferred Stock or the majority of the Board of Directors. The holders of the Junior Preferred Stock were entitled to the number of votes equal to the number of shares of common stock into which such shares of preferred stock could be converted and had voting rights and powers equal to the voting rights and powers of the common stock. In connection with the completion of the IPO, all 6,244,174 outstanding shares of the Company’s preferred convertible stock automatically converted into an aggregate of 753,611 shares of common stock. In addition, the Company issued 505,576 shares of its common stock in satisfaction of accumulated dividends on such preferred stock as the completion of the IPO. (b) Shares Reserved for Future Issuance The following common stock is reserved for future issuance at December 31, 2016 and December 31, 2015: For the Year Ended December 31, 2016 2015 (shares) Conversion of Series A, B, C, and D preferred convertible stock — 753,687 Conversion of Series E, F, and G preferred redeemable convertible stock — 2,327,170 Warrants issued and outstanding 51,003 788,338 Stock option awards issued and outstanding 1,040,387 756,692 Authorized for grants under the 2013 Equity Incentive Plan — 321,313 Authorized for grants under the 2016 Equity Incentive Plan 709,750 — Authorized for grants under the 2016 Employee Stock Purchase Plan 100,000 — 1,901,140 4,947,200

Preferred Redeemable Convertibl

Preferred Redeemable Convertible Stock	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Preferred Redeemable Convertible Stock	(9) Preferred Redeemable Convertible Stock In June 2005 and February 2006, the Company sold a total of 7,984,727 shares of Series E Preferred Redeemable Convertible Stock (Series E Preferred Stock) at $1.11 per share for gross proceeds of $8.8 million in cash. In February 2007, the Company sold 4,734,374 shares of Series F Preferred Redeemable Convertible Stock (Series F Preferred Stock) at $1.30 per share for gross proceeds of $6.2 million in cash. In March 2008 and June 2009, the Company completed an offering of Series G Preferred Stock at $1.30 per share for gross proceeds of $4.3 million in cash. In June 2012, the then outstanding convertible promissory notes and accrued interest thereon in the amount of $7.1 million converted to 6,216,607 and 463,856 shares of Series G Preferred Stock at the conversion price of $1.04 or $1.30 per share, respectively. The holders of the Senior Preferred Stock were entitled to receive cumulative dividends at a rate of 8% of the original purchase price, per annum and were payable in cash or common shares, at the option of the Company upon liquidation, redemption or conversion in order of their preference prior to any dividends on common stock or Junior Preferred Stock. The holders of the Senior Preferred Stock were entitled to receive liquidation preferences upon certain deemed liquidation events at the rate equal to their conversion price per share plus all accrued and unpaid dividends. Each share of Senior Preferred Stock was convertible, at the option of the holder, at any time, into a number of shares of common stock at a conversion price of $11.11, $13.00, and $13.00 for the Series E Preferred Stock, Series F Preferred Stock, and Series G Preferred Stock, respectively, subject to adjustments for stock dividends, combinations, subdivisions, reclassifications and reorganizations. Each share of Senior Preferred Stock was automatically convertible into common stock immediately upon the earlier of (i) the Company’s sale of its common stock in a firm commitment, underwritten public offering registered under the Securities Act of 1933, as amended, in which aggregate proceeds to the Company are at least $15.0 million, and at a per share offering price of at least $76.80 per share, as adjusted for any stock dividends, combinations, reclassifications, recapitalizations or splits, or (ii) the date specified by written consent or agreement by the holders of the majority of the then outstanding shares voting together as a single class, provided that the Junior Preferred Stock will also concurrently convert. As long as 4,875,000 shares of Senior Preferred Stock remained outstanding, the Company was prohibited from certain transactions without the consent of at least 50% of the then outstanding shares of Senior Preferred Stock or the majority of the Board of Directors. The holders of the Senior Preferred Stock were entitled to the number of votes equal to the number of shares of common stock into which such shares of preferred stock could be converted and have voting rights and powers equal to the voting rights and powers of the common stock. The following table provides a rollforward of the preferred redeemable convertible stock during the years ended December 31, 2016 and 2015: Preferred redeemable convertible stock Shares Amount Balance at December 31, 2014 23,055,356 $ 40,724,356 Exercise of warrants 216,346 225,000 Effect of accretion to redemption value — 2,157,550 Balance at December 31, 2015 23,271,702 43,106,906 Effect of accretion to redemption value — 1,356,707 Conversion of preferred redeemable convertible stock into common stock (23,271,702 ) (44,463,613 ) Balance at December 31, 2016 — $ — In connection with the completion of the IPO, all 23,271,702 outstanding shares of the Company’s preferred redeemable convertible stock automatically converted 2,327,122 shares of common stock. In addition, the Company issued 1,451,631 shares of its common stock in satisfaction of accumulated dividends on such preferred stock as of the completion of the IPO.

Warrants

Warrants	12 Months Ended
	Dec. 31, 2016
Warrants And Rights Note Disclosure [Abstract]
Warrants	(10) Warrants As of December 31, 2015, the Company had warrants outstanding that allow the holders to purchase shares of the Company’s Series G Preferred Stock. In May 2016, the warrants were amended such that the warrants became immediately exercisable into shares of the Company’s common stock. Concurrent with such amendment, the holders of the outstanding warrants elected to net exercise the warrants, and the Company issued an aggregate of 127,143 shares of common stock. No warrants were outstanding at December 31, 2016. Warrants outstanding at December 31, 2015 are summarized as follows: December 31, 2015 Number of warrants outstanding Issuance date Expiration dates Exercise price(s) Common share equivalent if exercised and converted Shares: Series G preferred redeemable convertible stock 7,883,377 April 2010 through September 2012 Various through September 2017 $ 1.04 788,338 As the Series G Preferred Stock was redeemable at the option of the Series G preferred stockholders, the Company had determined the warrants for Series G Preferred Stock should be classified as liabilities and adjusted to fair value at each reporting date. The fair value of the warrants was estimated using a combination of an option-pricing model and current value model under the probability- weighted return method, using significant unobservable inputs (Level 3 inputs) including: management’s cash flow projections; probability and timing of potential liquidity scenarios; weighted- average cost of capital that included the addition of a company specific risk premium to account for uncertainty associated with the Company achieving future cash flows; selection of appropriate market comparable transactions and multiples; expected volatility; and risk-free rate. The Company used a combination of discounted cash flow, guideline public company and market transaction valuation techniques in estimating the fair value of the warrant liability at each reporting date. The discount rates used were 20% and 21% at May 24, 2016 and December 31, 2015, respectively. The fair value of the warrants was $249,215 and $709,504 at May 24, 2016 and December 31, 2015, respectively. On April 2, 2015, the Company and certain holders of the warrants to purchase Series G Preferred Stock adopted an amendment to extend the exercise period for the holders of all outstanding warrants to purchase Series G Preferred Stock by one year, which resulted in incremental expense of $343,446 during the year ended December 31, 2015.

Stock Options

Stock Options	12 Months Ended
	Dec. 31, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock Options	(11) Stock Options In August 2016, the Company’s board of directors adopted the 2016 Equity Incentive Plan (the 2016 Plan) for employees, directors, and consultants. As of December 31, 2016, 709,750 shares are available for issuance under the 2016 Plan, of which 429,750 shares were rolled from the 2013 Equity Incentive Plan (the 2013 Plan) into the 2016 Plan. In 2013, the Company’s board of directors adopted the 2013 Plan for employees, directors, and consultants. On March 18, 2015, the Company’s Board of Directors adopted an amendment to the 2013 Plan to increase the share reserve thereunder by 300,000 shares. On June 18, 2015, the Company’s Board of Directors adopted an amendment to the 2013 Plan to increase the share reserve thereunder by an additional 300,000 shares. The common stock authorized under the 2013 Plan is 1,200,000 shares. Under the Plan, the administrator shall have authority to determine which service providers will receive awards, to grant awards and to set all terms and conditions of awards (including, but not limited to, vesting, exercise and forfeiture provisions). Vested options are canceled 90 days after termination of employment and become available for reissuance under the Plan. As of December 31, 2016, no shares were available for issuance under the 2013 Plan and as of December 31, 2015, 321,313 shares were available for issuance under the 2013 Plan. In 2003, the Company’s board of directors adopted the 2003 Equity Incentive Plan (the 2003 Plan) for employees, directors, and consultants, which terminated December 31, 2012. The common stock authorized under the 2003 Equity Incentive Plan was 600,000 shares. As of December 31, 2016, there are no shares available for issuance under the 2003 Plan. The service period for stock options granted to employees is generally 1 to 4 years. The grant-date fair value of each option award is estimated on the date of grant using the Black- Scholes-Merton option-pricing model. The weighted average assumptions for December 31, 2016 and 2015 grants are provided in the following table. The Company’s lack of historical share option exercise experience does not provide it a reasonable basis upon which to estimate an expected term because of a lack of sufficient data. Therefore, the Company estimates the expected term by using the simplified method, which calculates the expected term as the average of the time-to-vesting and the contractual life of the options. Since the Company’s shares have only been publicly traded since August 12, 2016 and its shares were rarely traded privately, expected volatility is estimated based on the average historical volatility of similar entities with publicly traded shares. The risk-free rate for the expected term of the option is based on the U.S. Treasury yield curve at the date of grant. December 31, 2016 December 31, 2015 December 31, 2014 Valuation assumptions: Expected dividend yield 0 % 0 % 0 % Expected volatility 41.82 % 56.74 % 64.40 % Expected term (years) 6.07 5.42 5.74 Risk-free interest rate 1.6 % 1.7 % 1.9 % Stock option activity during the periods indicated is as follows: Number of shares Weighted average exercise price Weighted average remaining contractual term Balance at December 31, 2013 364,450 $ 2.73 4.3 Granted 255,600 2.70 9.2 Exercised (100 ) 2.20 - Expired/Forfeited (115,400 ) 3.22 - Balance at December 31, 2014 504,550 $ 2.60 5.8 Granted 512,402 2.00 9.2 Exercised (24,260 ) 3.19 — Expired/Forfeited (236,000 ) 2.77 — Balance at December 31, 2015 756,692 $ 2.10 7.6 Granted 359,319 2.60 9.4 Exercised (58,155 ) 2.36 3.5 Expired/Forfeited (17,469 ) 2.13 2.6 Balance at December 31, 2016 1,040,387 $ 2.25 7.8 Vested and exercisable at December 31, 2016 628,933 $ 2.05 7.0 Vested and expected to vest at December 31, 2016 1,012,596 $ 2.24 7.8 The weighted average grant-date fair value of options granted during the year ended December 31, 2016, 2015 and 2014 was $1.23, $0.84 and $1.43, respectively. For fully vested stock options the aggregate intrinsic value was $7,770,086 as of December 31, 2016. For stock options expected to vest the aggregate intrinsic value was $4,569,243 as of December 31, 2016. At December 31, 2015, the aggregate intrinsic value for fully vested stock options and stock options expected to vest was immaterial. The total grant date fair value of shares vested during the years ended December 31, 2016, 2015 and 2014 was $176,597, $345,174, and $621,709, respectively. During the year ended December 31, 2014, the Company granted 260,924 shares of restricted common stock with a fair value of $2.20 per share to its Chief Executive Officer (CEO) of which 68.75% were vested immediately and 6.25% of the shares vest on each of March 31, 2014, June 30, 2014, September 30, 2014, December 31, 2014 and March 31, 2015. During the year ended December 31, 2015, 50,000 shares of restricted stock were granted to other executives contingent upon the Company achieving an initial public offering of its equity securities. The performance measures were not met and the shares expired as of December 31, 2015. There was no expense recorded for these contingently issuable shares. 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 following the completion of the IPO. At December 31, 2016 and 2015 there was $522,818 and $214,304, respectively, of total unrecognized compensation cost related to unvested stock options and restricted stock granted under the plans. That cost is expected to be recognized over the next three years. The Company currently uses authorized and unissued shares to satisfy share award exercises.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2016
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	(12) Commitments and Contingencies (a) 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 $742,829, $672,526 and $584,269, for the years ended December 31, 2016, 2015 and 2014, respectively. The longest lease expires in June 2020. The Company moved into its new facility in San Diego, California during the year ended December 31, 2014. The new 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 December 31, 2016 were as follows: Year ending: 2017 $ 791,285 2018 542,404 2019 517,973 2020 265,940 $ 2,117,601 (b) Indemnification In some agreements to which the Company is a party, the Company has agreed to indemnify the other party for certain matters, including, but not limited to, product liability and intellectual property. To date, there have been no known events or circumstances that have resulted in any material costs related to these indemnification provisions and no liabilities have been recorded in the accompanying financial statements. (c) Employment Agreements During 2014 the Company entered into employment agreements with its CEO and certain members of its management team. These agreements provide severance in the aggregate amount of $575,000 for termination without cause as defined in the agreements.

Concentration of Credit Risk

Concentration of Credit Risk	12 Months Ended
	Dec. 31, 2016
Risks And Uncertainties [Abstract]
Concentration of Credit Risk	(13) 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 years ended December 31, 2016, 2015 and 2014 and customers that accounted for 10% or more of total trade accounts receivable at December 31, 2016, 2015 and 2014: For the Year Ended December 31, 2016 2015 2014 Percentage of net revenue Customer A 31 % 28 % 11 % Customer B 20 15 29 Customer C 6 12 9 For the Year Ended December 31, 2016 2015 2014 Percentage of gross trade accounts receivable Customer A 18 % 12 % 12 % Customer B 16 1 1 Customer C 13 0 7 Customer D 13 23 12 (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. For the Year Ended December 31, 2016 2015 2014 Percentage of net revenue China 74 % 64 % 68 % Other Asia 11 21 15 North America 10 9 11 Europe 5 6 6 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 year ended December 31, 2016, 2015 and 2014, all of the Company’s products were manufactured by two vendors in China. The second vendor started production in April 2013.

Related-Party Transactions

Related-Party Transactions	12 Months Ended
	Dec. 31, 2016
Related Party Transactions [Abstract]
Related-Party Transactions	(14) Related-Party Transactions During the year ended December 31, 2014, the Company provided its CEO a loan of $266,282 for the payment of federal and state income taxes payable by him as the result of issuance of restricted stock. During the year ended December 31, 2015, the Company forgave the loan and incurred $266,282 of expense for the loan forgiveness and an additional $236,414 of expense related to the CEO’s taxes on the loan forgiveness. The Company entered into a professional services agreement with a stockholder, GEN3 Partners, in October 2008. Professional services expensed associated with GEN3 partners was approximately $0 for the years ended December 31, 2016 and 2015 and $9,000 for the year ended December 31, 2014.

Employee Benefit Plan

Employee Benefit Plan	12 Months Ended
	Dec. 31, 2016
Postemployment Benefits [Abstract]
Employee Benefit Plan	(15) Employee Benefit Plan The Company established a discretionary 401(k) plan effective January 2005. The 401(k) plan was amended and restated in May 2006. The 401(k) plan covers substantially all employees who have attained age 21. The participants may elect to defer a percentage of their compensation as allowable by law. The Company can make discretionary matching contributions, but so far has not done so.

Quarterly Financial Information

Quarterly Financial Information (unaudited)	12 Months Ended
	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information (unaudited)	(16) Quarterly Financial Information (unaudited) The following is a summary of the quarterly results of operations for the years ended December 31, 2016 and 2015: For the Three Months Ended December 31, 2016 September 30, 2016 June 30, 2016 March 31, 2016 Revenues $ 12,625,966 $ 12,439,279 $ 9,856,317 $ 8,512,305 Gross Profit 5,476,403 5,576,287 4,546,761 3,677,624 Total operating expenses 4,345,198 4,345,965 3,572,915 3,560,830 Net income 1,100,302 1,183,044 1,311,209 139,153 Basic net income (loss) per share $ 0.14 $ 0.21 $ 0.97 $ (0.70 ) Diluted net income (loss) per share $ 0.12 $ 0.16 $ 0.15 $ (0.82 ) For the Three Months Ended December 31, 2015 September 30, 2015 June 30, 2015 March 31, 2015 Revenues $ 9,333,483 $ 6,668,732 $ 6,058,125 $ 5,732,733 Gross Profit 3,842,816 2,775,075 2,544,324 2,482,695 Total operating expenses 3,646,865 2,846,106 2,717,331 2,765,309 Net income (loss) (42,159 ) 669 (171,352 ) (57,500 ) Basic net loss per share $ (0.99 ) $ (0.93 ) $ (1.20 ) $ (1.05 ) Diluted net loss per share $ (0.99 ) $ (1.05 ) $ (1.22 ) $ (1.44 )

Significant Accounting Polici24

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Basis of Presentation	(b) Basis of Presentation The financial statements of the Company have been prepared in conformity with U.S. generally accepted accounting principles (GAAP).
Segment Information	(c) 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 operations as a single operating segment.
Cash and Cash Equivalents	(d) Cash and Cash Equivalents For purposes of financial statement presentation, the Company classifies all highly liquid financial instruments with an original maturity of three months or less when purchased to be cash equivalents. At times, the Company has had cash and cash equivalents deposited at financial institutions in excess of federally insured deposit limits. However, cash is held on deposit at major financial institutions and is considered subject to minimal credit risk. To date, the Company has not realized any losses on its cash and cash equivalents.
Trade Accounts Receivable	(e) Trade Accounts Receivable Trade accounts receivable is adjusted for all known uncollectible accounts. The policy for determining when receivables are past due or delinquent is based on the contractual terms agreed upon. Accounts are written off once all collection efforts have been exhausted. An allowance for doubtful accounts is established when, in the opinion of management, collection of the account is doubtful. The allowance for doubtful accounts was $0 as of December 31, 2016 and December 31, 2015.
Inventory	(f) 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).
Property and Equipment	(g) Property and Equipment Property and equipment are stated at cost and are depreciated using the straight-line method over the estimated useful lives of the assets, generally three years. The estimated useful lives for leasehold improvements are the estimated useful life of the asset or lease term, if shorter. Property and equipment are reviewed for impairment whenever events or changes in circumstances indicate the carrying amount of an asset may not be recoverable.
Goodwill	(h) Goodwill Goodwill, which has an indefinite useful life, represents the excess of cost over fair value of net assets acquired. The change in the carrying value of goodwill during the year ended December 31, 2015, was due to an acquisition during 2015. See Note 3. The Company reviews goodwill for impairment annually on December 1st and whenever events or changes in circumstances indicate that goodwill may be impaired. The Company completed its annual assessment for goodwill impairment in December 2016 and determined that goodwill is not impaired as of December 31, 2016.
Long-lived Assets	(i) Long-lived Assets The Company’s identifiable intangible assets are comprised of acquired developed technologies, customer relationships and non-compete agreements. The cost of the identifiable intangible assets with finite lives is amortized on a straight-line basis over the assets’ respective estimated useful lives. The Company periodically re-evaluates the original assumptions and rationale utilized in the establishment of the carrying value and estimated lives of long-lived assets and finite-lived intangible assets. Long- lived assets and finite-lived intangibles are assessed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If an asset is considered to be impaired, the impairment recognized is equal to the amount by which the carrying value of the asset exceeds its fair value.
Revenue Recognition	(j) Revenue Recognition The Company generates revenue primarily from the sale of its antenna products. The Company recognizes revenue when products are shipped and the customer takes ownership and assumes risk of loss, collection of the relevant receivable is reasonably assured, persuasive evidence of an arrangement exists, and the sales price is fixed or determinable. Title and risk of loss transfer to customers either when the products are shipped to or received by the customer, based on the terms of the specific agreement with the customer. A portion of the Company’s sales are made through distributors under agreements allowing for pricing credits and/or rights of return under certain circumstances. To date, pricing credits and returns under these provisions have been insignificant; accordingly, the Company recognizes revenue upon shipment to the distributor and the Company’s allowance for sales returns and pricing credits was insignificant for the years ended December 31, 2016, 2015 and 2014.
Shipping and Transportation Costs	(k) Shipping and Transportation Costs Shipping and other transportation costs are expensed as incurred. Shipping and other transportation costs were $321,093, $221,974 and $154,025 for the years ended December 31, 2016, 2015 and 2014, respectively. These costs are included in general and administrative expenses in the accompanying statements of operations.
Research and Development Costs	(l) Research and Development Costs Costs incurred in connection with research and development are expensed as incurred.
Income Taxes	(m) Income Taxes The Company records income taxes under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statements carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. When applicable, a valuation allowance is established to reduce any deferred tax asset when it is determined that it is more likely than not that some portion of the deferred tax asset will not be realized. The Company recognizes the effect of income tax positions only if those positions are more likely than not of being sustained. Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. The Company records interest related to unrecognized tax benefits in interest expense and penalties in general and administrative expenses. The Company uses the with-and-without approach, disregarding indirect tax impacts, for determining the period in which tax benefits for excess share-based deductions are recognized.
Stock-Based Compensation	(n) Stock-Based Compensation The Company recognizes all employee stock-based compensation as a cost in the financial statements. Equity classified awards are measured at the grant-date fair value of the award. The Company estimates the grant-date fair value using the Black-Scholes-Merton option-pricing model. The impact of forfeitures that may occur prior to vesting is also estimated and considered in the amount recognized for all stock-based compensation. Compensation cost is recognized on a straight-line basis over the requisite service period for the entire award. Stock-based compensation expense for the years ended December 31, 2016, 2015 and 2014 was $298,535, $341,554 and $657,730, respectively.
Preferred Redeemable Convertible Stock	(o) Preferred Redeemable Convertible Stock Prior to the initial public offering (IPO) the Company had Series E, F, and G preferred redeemable convertible stock (collectively, Senior Preferred Stock). As these securities were redeemable for cash at the option of the holders, they were excluded from stockholders’ equity and presented as temporary equity in the accompanying balance sheets. At any time after May 2013, but within ninety days after the receipt of a written request from the holders of not less than 66 2/3% of the then outstanding Senior Preferred Stock, all shares of the Senior Preferred Stock could be redeemed at the original issue price plus any accrued and unpaid dividends in two annual installments. At least one of the Company’s two largest shareholders would have needed to vote in favor of redemption to meet the 66 2/3% requirement. The Company obtained written commitments from these two shareholders committing that neither shareholder would vote in favor of redemption prior to January 1, 2018. As only the passage of time is required for Senior Preferred Stock to be redeemable, the Company adjusted the carrying value of the Senior Preferred Stock to its redemption value at each balance sheet date. In connection with the completion of the IPO, all outstanding shares of the Company’s preferred redeemable convertible stock automatically converted into shares of common stock. In addition, the company issued shares of its common stock in satisfaction of accumulated dividends on such preferred stock as of the completion of the IPO.
Preferred Stock Warrant Liability	(p) Preferred Stock Warrant Liability As of December 31, 2015 and 2014, the Company had issued freestanding warrants exercisable to purchase shares of its Series G preferred redeemable convertible stock. These warrants were classified as a liability in the accompanying balance sheets, as the terms for redemption of the underlying security were outside the Company’s control. The warrants were recorded at fair value using a combination of an option pricing model and current value model under the probability- weighted return method. The fair value of all warrants were remeasured at each balance sheet date with any changes in fair value being recognized in the statement of operations. In May 2016, the warrants were amended such that the warrants became immediately exercisable into shares of the Company’s common stock. Concurrent with such amendment, the holders of the outstanding warrants elected to net exercise the warrants, and the Company issued an aggregate of 127,143 shares of common stock.
Fair Value Measurements	(q) Fair Value Measurements The carrying values of the Company’s financial instruments, including cash, trade accounts receivable, accounts payable, and accrued liabilities 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 following table provides a summary of the recognized liabilities carried at fair value on a recurring basis: Balance as of December 31, 2016 Level 1 Level 2 Level 3 Liabilities: Warrant liability (note 10) $ — — $ — Balance as of December 31, 2015 Level 1 Level 2 Level 3 Liabilities: Warrant liability (note 10) $ — — $ 709,504 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 years ended December 31, 2016 and 2015. The following table provides a rollforward of the Company’s Level 3 fair value measurements during the years ended December 31, 2016 and 2015: For the Year Ended December 31, 2016 2015 Beginning balance $ 709,504 $ 809,974 Change in fair value of warrant liability (460,289 ) (85,325 ) Exercise and expiration of warrants — (15,145 ) Conversion of warrants (249,215 ) — Ending balance $ — $ 709,504
Use of Estimates	(r) Use of Estimates The preparation of financial statements in conformity with U.S. generally accepted accounting principles (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 preferred redeemable convertible stock warrant liability, stock- based compensation and intangible assets.
Comprehensive Income (Loss)	(s) Comprehensive Income (Loss) The Company had no other transactions or activity, other than net income (loss), that would be considered as part of comprehensive income (loss).
Net Income or Loss Per Share	(t) Net Income or 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. 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: For the Year Ended December 31, 2016 2015 2014 Numerator: Net income (loss) $ 3,733,707 $ (270,342 ) $ 3,588,300 Accretion of dividends on preferred stock (1,537,021 ) (2,444,954 ) (2,431,836 ) Net income (loss) attributable to common stockholders - basic $ 2,196,686 $ (2,715,296 ) $ 1,156,464 Accretion of dividends on preferred stock 125,205 — — Adjustment for change in fair value of warrant liability (460,289 ) (85,325 ) (2,747,570 ) Net income (loss) attributable to common stockholders - diluted $ 1,861,602 $ (2,800,621 ) $ (1,591,106 ) Denominator: Weighted average common shares outstanding Basic 3,373,316 651,593 555,805 Diluted 4,667,503 651,593 555,805 Net income (loss) per share: Basic $ 0.65 $ (4.17 ) $ 2.08 Diluted $ 0.40 $ (4.30 ) $ (2.86 ) Potentially dilutive securities not included in the calculation of diluted net loss per share because to do so would be anti-dilutive are as follows (in common stock equivalent shares): For the Year Ended December 31, 2016 2015 2014 Preferred redeemable convertible stock and preferred convertible stock, including accumulated dividends 2,406,894 4,891,205 4,653,197 Employee stock options — 756,692 504,550 Warrants outstanding 51,003 — — Series G preferred stock warrants outstanding — 788,338 809,972 Total 2,457,897 6,436,235 5,967,719

Significant Accounting Polici25

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Summary of Recognized Liabilities Carried at Fair Value on Recurring Basis	The following table provides a summary of the recognized liabilities carried at fair value on a recurring basis: Balance as of December 31, 2016 Level 1 Level 2 Level 3 Liabilities: Warrant liability (note 10) $ — — $ — Balance as of December 31, 2015 Level 1 Level 2 Level 3 Liabilities: Warrant liability (note 10) $ — — $ 709,504
Rollforward of Level 3 Fair Value Measurements	The following table provides a rollforward of the Company’s Level 3 fair value measurements during the years ended December 31, 2016 and 2015: For the Year Ended December 31, 2016 2015 Beginning balance $ 709,504 $ 809,974 Change in fair value of warrant liability (460,289 ) (85,325 ) Exercise and expiration of warrants — (15,145 ) Conversion of warrants (249,215 ) — Ending balance $ — $ 709,504
Summary of Computation of Net Income or Loss Per Share	The following table presents the computation of net income or loss per share: For the Year Ended December 31, 2016 2015 2014 Numerator: Net income (loss) $ 3,733,707 $ (270,342 ) $ 3,588,300 Accretion of dividends on preferred stock (1,537,021 ) (2,444,954 ) (2,431,836 ) Net income (loss) attributable to common stockholders - basic $ 2,196,686 $ (2,715,296 ) $ 1,156,464 Accretion of dividends on preferred stock 125,205 — — Adjustment for change in fair value of warrant liability (460,289 ) (85,325 ) (2,747,570 ) Net income (loss) attributable to common stockholders - diluted $ 1,861,602 $ (2,800,621 ) $ (1,591,106 ) Denominator: Weighted average common shares outstanding Basic 3,373,316 651,593 555,805 Diluted 4,667,503 651,593 555,805 Net income (loss) per share: Basic $ 0.65 $ (4.17 ) $ 2.08 Diluted $ 0.40 $ (4.30 ) $ (2.86 )
Summary of Potentially Dilutive Securities	Potentially dilutive securities not included in the calculation of diluted net loss per share because to do so would be anti-dilutive are as follows (in common stock equivalent shares): For the Year Ended December 31, 2016 2015 2014 Preferred redeemable convertible stock and preferred convertible stock, including accumulated dividends 2,406,894 4,891,205 4,653,197 Employee stock options — 756,692 504,550 Warrants outstanding 51,003 — — Series G preferred stock warrants outstanding — 788,338 809,972 Total 2,457,897 6,436,235 5,967,719

Property and Equipment (Tables)

Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2016
Property Plant And Equipment [Abstract]
Schedule of Property and Equipment	Property and equipment consist of the following: As of December 31, 2016 2015 Lab equipment $ 1,314,060 $ 1,284,626 Computer equipment 165,415 182,266 Computer software 299,227 302,549 Furniture and fixtures 184,233 184,233 Tenant improvements 763,898 763,898 Other office equipment 20,591 38,753 2,747,424 2,756,325 Less accumulated depreciation (1,940,338 ) (1,729,541 ) $ 807,086 $ 1,026,784

Acquisition (Tables)

Acquisition (Tables)	12 Months Ended
	Dec. 31, 2016
Business Combinations [Abstract]
Summary of Consideration Paid and Amounts of Estimated Fair Value of Assets Acquired and Liabilities Assumed	The following table summarizes the consideration paid and the estimated fair value of the assets acquired and liabilities assumed at the acquisition date. Consideration: Cash $ 4,000,000 Contingent consideration arrangement 1,000,000 Fair value of total consideration transferred $ 5,000,000 Recognized amounts of identifiable assets acquired and liabilities assumed: Accounts receivable $ 429,267 Intangible assets 3,497,000 Current liabilities (176,223 ) Total identifiable net assets acquired $ 3,750,044 Goodwill 1,249,956 Total $ 5,000,000

Goodwill (Tables)

Goodwill (Tables)	12 Months Ended
	Dec. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Schedule of changes in goodwill	Changes to the Company’s goodwill balance during the year ended December 31, 2016, and 2015 are as follows: Balance at December 31, 2014 $ — Skycross acquisition 1,249,956 Balance at December 31, 2015 $ 1,249,956 Current period adjustments — Balance at December 31, 2016 $ 1,249,956

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Acquired Intangible Assets	The following is a summary of the Company’s acquired intangible assets: As of 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 As of December 31, 2015 Weighted Average Amortization Period Gross Carrying Amount Accumulated Amortization Intangibles, Net Developed technologies 10 $ 280,000 $ 1,074 $ 278,926 Customer relationships 10 3,150,000 12,082 3,137,918 Non-compete agreement 3 67,000 857 66,143 Total intangible assets, net 10 $ 3,497,000 $ 14,013 $ 3,482,987
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. Estimated Future Amortization 2017 $ 389,385 2018 388,529 2019 367,052 2020 366,333 2021 350,420 Thereafter 1,247,918 Total $ 3,109,637

Long-term Notes Payable (incl30

Long-term Notes Payable (including current portion) and Line of Credit (Tables)	12 Months Ended
	Dec. 31, 2016
Loan Agreement With Silicon Valley Bank
Schedule of Principal Payment of Loan	The remaining principal payments on the $4.0 million loan subsequent to December 31, 2016 are as follows: Year ending: 2017 $ 1,333,333 2018 1,333,333 $ 2,666,666

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Schedule of Income Tax Provisions	The December 31, 2016, 2015 and 2014 income tax provision is as follows: For the Year Ended December 31, 2016 2015 2014 Current: U.S. federal $ — $ — $ — State and local 2,015 622 6,171 Total current provision 2,015 622 6,171 Deferred: U.S. federal 6,124 — — State and local 42 — — Total deferred provision 6,166 — — Total tax provision $ 8,181 $ 622 $ 6,171
Schedule of Reconciliation of Income Tax Provision to Statutory Federal Income Tax Rate	A reconciliation of the total income tax provision tax rate to the statutory federal income tax rate of 34% for the years ended December 31, 2016, 2015 and 2014 is as follows: For the Year Ended December 31, 2016 2015 2014 Income taxes at statutory rates $ 1,272,242 $ (91,705 ) $ 1,222,120 State income tax, net of federal benefit 2,054 411 4,132 Permanent items 171,704 171,963 111,001 Section 382 limitation expiration — — 1,712,466 Warrant liability (156,498 ) (34,160 ) (947,432 ) Federal NOL expired (206,133 ) — — Other 11,104 — — Research and development credit (141,494 ) 628,573 (143,114 ) Change in federal valuation allowance (944,798 ) (674,460 ) (1,953,002 ) $ 8,181 $ 622 $ 6,171
Deferred Income Tax Assets and Liabilities	The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities at December 31, 2016 and 2015 are as follows: For the Year Ended December 31, 2016 2015 Deferred tax assets: Net operating loss carryforwards $ 6,786,922 $ 9,008,344 Capitalization of patent costs, goodwill and amortization 332,901 441,076 Capitalization of acquisition costs 43,523 35,264 Research and AMT credits 1,689,883 1,421,251 Stock based compensation 160,182 180,675 Deferred lease obligation 182,550 274,164 Other timing differences 51,314 41,045 9,247,275 11,401,819 Less valuation allowance (9,028,241 ) (11,103,399 ) Total deferred tax assets $ 219,034 $ 298,420 Deferred tax liabilities: Fixed assets (219,034 ) (298,420 ) Goodwill (6,166 ) — Total deferred tax liabilities $ (225,200 ) $ (298,420 ) Total deferred tax assets (liabilities) $ (6,166 ) $ —
Summary of Reconciliation of Unrecognized Tax Benefit Activity	The following table summarizes the reconciliation of the unrecognized tax benefits activity during the years ended December 31, 2016 and 2015: For the Year Ended December 31, 2016 2015 Beginning unrecognized tax benefits $ 1,408,000 $ 1,408,000 Decreases related to prior year tax positions (53,000 ) — Increases related to current year tax positions 177,000 — Ending unrecognized tax benefits $ 1,532,000 $ 1,408,000

Stockholders' Equity (Deficit)

Stockholders' Equity (Deficit) (Tables)	12 Months Ended
	Dec. 31, 2016
Class Of Stock Disclosures [Abstract]
Schedule of Common Stock Reserved for Future Issuance	The following common stock is reserved for future issuance at December 31, 2016 and December 31, 2015: For the Year Ended December 31, 2016 2015 (shares) Conversion of Series A, B, C, and D preferred convertible stock — 753,687 Conversion of Series E, F, and G preferred redeemable convertible stock — 2,327,170 Warrants issued and outstanding 51,003 788,338 Stock option awards issued and outstanding 1,040,387 756,692 Authorized for grants under the 2013 Equity Incentive Plan — 321,313 Authorized for grants under the 2016 Equity Incentive Plan 709,750 — Authorized for grants under the 2016 Employee Stock Purchase Plan 100,000 — 1,901,140 4,947,200

Preferred Redeemable Converti33

Preferred Redeemable Convertible Stock (Tables)	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Schedule of Preferred Redeemable Convertible Stock	The following table provides a rollforward of the preferred redeemable convertible stock during the years ended December 31, 2016 and 2015: Preferred redeemable convertible stock Shares Amount Balance at December 31, 2014 23,055,356 $ 40,724,356 Exercise of warrants 216,346 225,000 Effect of accretion to redemption value — 2,157,550 Balance at December 31, 2015 23,271,702 43,106,906 Effect of accretion to redemption value — 1,356,707 Conversion of preferred redeemable convertible stock into common stock (23,271,702 ) (44,463,613 ) Balance at December 31, 2016 — $ —

Warrants (Tables)

Warrants (Tables)	12 Months Ended
	Dec. 31, 2016
Warrants And Rights Note Disclosure [Abstract]
Schedules of Warrants Outstanding	Warrants outstanding at December 31, 2015 are summarized as follows: December 31, 2015 Number of warrants outstanding Issuance date Expiration dates Exercise price(s) Common share equivalent if exercised and converted Shares: Series G preferred redeemable convertible stock 7,883,377 April 2010 through September 2012 Various through September 2017 $ 1.04 788,338

Stock Options (Tables)

Stock Options (Tables)	12 Months Ended
	Dec. 31, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Weighted Average Assumptions Used in Estimating Fair Value of Stock Options	December 31, 2016 December 31, 2015 December 31, 2014 Valuation assumptions: Expected dividend yield 0 % 0 % 0 % Expected volatility 41.82 % 56.74 % 64.40 % Expected term (years) 6.07 5.42 5.74 Risk-free interest rate 1.6 % 1.7 % 1.9 %
Summary of Outstanding Stock Option Activity	Stock option activity during the periods indicated is as follows: Number of shares Weighted average exercise price Weighted average remaining contractual term Balance at December 31, 2013 364,450 $ 2.73 4.3 Granted 255,600 2.70 9.2 Exercised (100 ) 2.20 - Expired/Forfeited (115,400 ) 3.22 - Balance at December 31, 2014 504,550 $ 2.60 5.8 Granted 512,402 2.00 9.2 Exercised (24,260 ) 3.19 — Expired/Forfeited (236,000 ) 2.77 — Balance at December 31, 2015 756,692 $ 2.10 7.6 Granted 359,319 2.60 9.4 Exercised (58,155 ) 2.36 3.5 Expired/Forfeited (17,469 ) 2.13 2.6 Balance at December 31, 2016 1,040,387 $ 2.25 7.8 Vested and exercisable at December 31, 2016 628,933 $ 2.05 7.0 Vested and expected to vest at December 31, 2016 1,012,596 $ 2.24 7.8

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2016
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 December 31, 2016 were as follows: Year ending: 2017 $ 791,285 2018 542,404 2019 517,973 2020 265,940 $ 2,117,601

Concentration of Credit Risk (T

Concentration of Credit Risk (Tables)	12 Months Ended
	Dec. 31, 2016
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 years ended December 31, 2016, 2015 and 2014 and customers that accounted for 10% or more of total trade accounts receivable at December 31, 2016, 2015 and 2014: For the Year Ended December 31, 2016 2015 2014 Percentage of net revenue Customer A 31 % 28 % 11 % Customer B 20 15 29 Customer C 6 12 9 For the Year Ended December 31, 2016 2015 2014 Percentage of gross trade accounts receivable Customer A 18 % 12 % 12 % Customer B 16 1 1 Customer C 13 0 7 Customer D 13 23 12
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. For the Year Ended December 31, 2016 2015 2014 Percentage of net revenue China 74 % 64 % 68 % Other Asia 11 21 15 North America 10 9 11 Europe 5 6 6

Quarterly Financial Informati38

Quarterly Financial Information (unaudited) (Tables)	12 Months Ended
	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Summary of Quarterly Results of Operations	The following is a summary of the quarterly results of operations for the years ended December 31, 2016 and 2015: For the Three Months Ended December 31, 2016 September 30, 2016 June 30, 2016 March 31, 2016 Revenues $ 12,625,966 $ 12,439,279 $ 9,856,317 $ 8,512,305 Gross Profit 5,476,403 5,576,287 4,546,761 3,677,624 Total operating expenses 4,345,198 4,345,965 3,572,915 3,560,830 Net income 1,100,302 1,183,044 1,311,209 139,153 Basic net income (loss) per share $ 0.14 $ 0.21 $ 0.97 $ (0.70 ) Diluted net income (loss) per share $ 0.12 $ 0.16 $ 0.15 $ (0.82 ) For the Three Months Ended December 31, 2015 September 30, 2015 June 30, 2015 March 31, 2015 Revenues $ 9,333,483 $ 6,668,732 $ 6,058,125 $ 5,732,733 Gross Profit 3,842,816 2,775,075 2,544,324 2,482,695 Total operating expenses 3,646,865 2,846,106 2,717,331 2,765,309 Net income (loss) (42,159 ) 669 (171,352 ) (57,500 ) Basic net loss per share $ (0.99 ) $ (0.93 ) $ (1.20 ) $ (1.05 ) Diluted net loss per share $ (0.99 ) $ (1.05 ) $ (1.22 ) $ (1.44 )

Significant Accounting Polici39

Significant Accounting Policies - Additional Information (Details)	1 Months Ended	12 Months Ended
	May 31, 2016shares	Dec. 31, 2016USD ($)SegmentInstallmentshares	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Significant Accounting Policies [Line Items]
Number of operating segments | Segment		1
Allowance for doubtful trade accounts receivable		$ 0	$ 0
Goodwill impairment		0
Shipping and other transportation costs		321,093	221,974	$ 154,025
Stock-based compensation		298,535	341,554	$ 657,730
Transfers into level 1 to level 2, liabilities		0	0
Transfers into level 2 to level 1, liabilities		0	0
Transfers into level 3, liabilities		0	0
Transfers out of level 3, liabilities		$ 0	$ 0
Common Stock
Significant Accounting Policies [Line Items]
Issuance of common stock upon initial public offering, net of issuance costs, shares | shares	127,143	1,700,100
Preferred Redeemable Convertible Stock
Significant Accounting Policies [Line Items]
Number of annual installments for redemption | Installment		2
Redemption description		At least one of the Company’s two largest shareholders would have needed to vote in favor of redemption to meet the 66 2/3% requirement. The Company obtained written commitments from these two shareholders committing that neither shareholder would vote in favor of redemption prior to January 1, 2018
Minimum | Preferred Redeemable Convertible Stock
Significant Accounting Policies [Line Items]
Percentage of outstanding senior preferred stockholders for redemption		66.667%
Property and Equipment, Other
Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life		3 years

Significant Accounting Polici40

Significant Accounting Policies - Summary of Recognized Liabilities Carried at Fair Value on Recurring Basis (Details)	Dec. 31, 2015USD ($)
Recurring | Warrant Liability | Level 3
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Warrant liability (note 10)	$ 709,504

Significant Accounting Polici41

Significant Accounting Policies - Rollforward of Level 3 Fair Value Measurements (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Accounting Policies [Abstract]
Beginning balance	$ 709,504	$ 809,974
Change in fair value of warrant liability	(460,289)	(85,325)
Exercise and expiration of warrants	0	(15,145)
Conversion of warrants	(249,215)	0
Ending balance	$ 0	$ 709,504

Significant Accounting Polici42

Significant Accounting Policies - Summary of Computation of Net Income or Loss Per Share (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Numerator:
Net income (loss)	$ 1,100,302	$ 1,183,044	$ 1,311,209	$ 139,153	$ (42,159)	$ 669	$ (171,352)	$ (57,500)	$ 3,733,707	$ (270,342)	$ 3,588,300
Accretion of dividends on preferred stock									1,537,021	2,444,954	2,431,836
Net income (loss) attributable to common stockholders									2,196,686	(2,715,296)	1,156,464
Accretion of dividends on preferred stock									125,205
Adjustment for change in fair value of warrant liability									(460,289)	(85,325)	(2,747,570)
Net income (loss) attributable to common stockholders - diluted									$ 1,861,602	$ (2,800,621)	$ (1,591,106)
Weighted average shares used in calculating income (loss) per share
Basic									3,373,316	651,593	555,805
Diluted									4,667,503	651,593	555,805
Net income (loss) per share:
Basic	$ 0.14	$ 0.21	$ 0.97	$ (0.70)	$ (0.99)	$ (0.93)	$ (1.20)	$ (1.05)	$ 0.65	$ (4.17)	$ 2.08
Diluted	$ 0.12	$ 0.16	$ 0.15	$ (0.82)	$ (0.99)	$ (1.05)	$ (1.22)	$ (1.44)	$ 0.40	$ (4.30)	$ (2.86)

Significant Accounting Polici43

Significant Accounting Policies - Summary of Potentially Dilutive Securities (Details) - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
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	2,457,897	6,436,235	5,967,719
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	2,406,894	4,891,205	4,653,197
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		756,692	504,550
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	51,003
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	809,972

Property and Equipment - Additi

Property and Equipment - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property Plant And Equipment [Line Items]
Depreciation expense	$ 495,347	$ 458,734	$ 371,603
Property and Equipment, Other
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful Life	3 years
Minimum | Tenant Improvement
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful Life	6 years
Maximum | Tenant Improvement
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful Life	10 years

Property and Equipment - Schedu

Property and Equipment - Schedule of Property and Equipment (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 2,747,424	$ 2,756,325
Less accumulated depreciation	(1,940,338)	(1,729,541)
Property and equipment, net	807,086	1,026,784
Lab Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	1,314,060	1,284,626
Computer Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	165,415	182,266
Computer Software
Property Plant And Equipment [Line Items]
Property and equipment, gross	299,227	302,549
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Property and equipment, gross	184,233	184,233
Tenant Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	763,898	763,898
Other Office Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 20,591	$ 38,753

Acquisition - Additional Inform

Acquisition - Additional Information (Details) - USD ($)	Dec. 17, 2015	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill		$ 1,249,956				$ 1,249,956				$ 1,249,956	$ 1,249,956
Business acquisition up front payment											4,000,000
Business acquisition, revenue		$ 12,625,966	$ 12,439,279	$ 9,856,317	$ 8,512,305	$ 9,333,483	$ 6,668,732	$ 6,058,125	$ 5,732,733	43,433,867	27,793,073	$ 25,509,572
Business acquisition, cost of goods sold										$ 24,156,792	16,148,163	$ 14,132,357
Skycross, Inc.
Business Acquisition [Line Items]
Date of asset purchase agreement										Dec. 17, 2015
Goodwill	$ 1,249,956
Goodwill, expected tax deductible amount	1,249,956
Business acquisition up front payment	4,000,000
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, Inc. 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	1,000,000									$ 1,000,000	1,000,000
Amount to be paid under contingent consideration arrangements, value, low	0
Amount to be paid under contingent consideration arrangements, value, high	1,000,000
Accounts receivable	$ 429,267
Business acquisition, revenue										5,000,000	200,000
Business acquisition, cost of goods sold										$ 1,700,000	$ 100,000

Acquisition - Summary of Consid

Acquisition - Summary of Consideration Paid and Amounts of Estimated Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($)	Dec. 17, 2015	Dec. 31, 2016	Dec. 31, 2015
Consideration:
Cash			$ 4,000,000
Recognized amounts of identifiable assets acquired and liabilities assumed:
Goodwill		$ 1,249,956	1,249,956
Skycross, Inc.
Consideration:
Cash	$ 4,000,000
Contingent consideration arrangement	1,000,000	$ 1,000,000	$ 1,000,000
Fair value of total consideration transferred	5,000,000
Recognized amounts of identifiable assets acquired and liabilities assumed:
Accounts receivable	429,267
Intangible assets	3,497,000
Current liabilities	(176,223)
Total identifiable net assets acquired	3,750,044
Goodwill	1,249,956
Total	$ 5,000,000

Goodwill - Schedule of Changes

Goodwill - Schedule of Changes In Goodwill (Details)	12 Months Ended
	Dec. 31, 2015USD ($)
Goodwill [Line Items]
Ending balance	$ 1,249,956
Skycross, Inc.
Goodwill [Line Items]
Acquisition	$ 1,249,956

Intangible Assets - Summary of

Intangible Assets - Summary of Acquired Intangible Assets (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
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	387,363	14,013
Intangibles, Net	$ 3,109,637	$ 3,482,987
Developed technologies
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	5 years	10 years
Gross Carrying Amount	$ 280,000	$ 280,000
Accumulated Amortization	37,091	1,074
Intangibles, Net	$ 242,909	$ 278,926
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	327,082	12,082
Intangibles, Net	$ 2,822,918	$ 3,137,918
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	23,190	857
Intangibles, Net	$ 43,810	$ 66,143

Intangible Assets - Additional

Intangible Assets - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Finite Lived Intangible Assets [Line Items]
Useful life of intangible asset	10 years	10 years
Amortization	$ 373,350	$ 14,013	$ 0
Developed technologies
Finite Lived Intangible Assets [Line Items]
Useful life of intangible asset	5 years	10 years

Intangible Assets - Schedule of

Intangible Assets - Schedule of Estimated Annual Amortization of Intangible Assets (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
2,017	$ 389,385
2,018	388,529
2,019	367,052
2,020	366,333
2,021	350,420
Thereafter	1,247,918
Intangibles, Net	$ 3,109,637	$ 3,482,987

Long-term Notes Payable (incl52

Long-term Notes Payable (including current portion) and Line of Credit - Additional Information (Details)	Feb. 01, 2017USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2013USD ($)Installment	Dec. 31, 2016USD ($)	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				$ 500,000
Interest rate percentage		5.00%
Long-term debt				2,666,666	$ 2,666,666
Equipment Term Loan
Line Of Credit Facility [Line Items]
Long-term debt		$ 4,000,000		2,666,666	$ 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					3.75%
Liquidity ratio					125.00%
Line of credit facility maturity date					2018-04
Line of credit		0		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 | Capital Growth Term Loans
Line Of Credit Facility [Line Items]
Line of credit facility allowable amount			$ 750,000
Liquidity ratio			100.00%
Line of credit		$ 346,895		$ 55,230	$ 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
Line of credit facility interest rate			6.50%
Silicon Valley Bank | Revolving Credit Facility | Capital Growth Term Loans | Subsequent Event
Line Of Credit Facility [Line Items]
Payment of principal and accrued interest	$ 55,230

Long-term Notes Payable (incl53

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

Income Taxes - Schedule of Inco

Income Taxes - Schedule of Income Tax Provisions (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
State and local	$ 2,015	$ 622	$ 6,171
Total current provision	2,015	622	6,171
Deferred:
U.S. federal	6,124
State and local	42
Total deferred provision	6,166
Total tax provision	$ 8,181	$ 622	$ 6,171

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Line Items]
U.S. federal statutory tax rate	34.00%	34.00%	34.00%
Valuation allowance	$ 9,028,241	$ 11,103,399
Net change in total valuation allowance	$ (2,075,158)
Cumulative change in ownership percentage	50.00%
Period for cumulative change in ownership	3 years
Changes in liability for uncertain tax benefits	$ 0
Income tax interest and penalties accrued	0	$ 0
Income tax interest and penalties	0
CALIFORNIA
Income Taxes [Line Items]
Net operating loss carry forwards	$ 7,873,156
Net operating loss carry forwards, expire period	2,017
Federal
Income Taxes [Line Items]
Net operating loss carry forwards	$ 17,914,514
Net operating loss carry forwards, expire period	2,020
Tax credit carry forwards	$ 1,716,398
Tax credit carry forwards, expire period	2,026
State
Income Taxes [Line Items]
Tax credit carry forwards	$ 1,346,874

Income Taxes - Schedule of Reco

Income Taxes - Schedule of Reconciliation of Income Tax Provision to Statutory Federal Income Tax Rate (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Expense Benefit Continuing Operations Income Tax Reconciliation [Abstract]
Income taxes at statutory rates	$ 1,272,242	$ (91,705)	$ 1,222,120
State income tax, net of federal benefit	2,054	411	4,132
Permanent items	171,704	171,963	111,001
Section 382 limitation expiration			1,712,466
Warrant liability	(156,498)	(34,160)	(947,432)
Federal NOL expired	(206,133)
Other	11,104
Research and development credit	(141,494)	628,573	(143,114)
Change in federal valuation allowance	(944,798)	(674,460)	(1,953,002)
Total tax provision	$ 8,181	$ 622	$ 6,171

Income Taxes - Deferred Income

Income Taxes - Deferred Income Tax Assets and Liabilities (Detail) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Net operating loss carryforwards	$ 6,786,922	$ 9,008,344
Capitalization of patent costs, goodwill and amortization	332,901	441,076
Capitalization of acquisition costs	43,523	35,264
Research and AMT credits	1,689,883	1,421,251
Stock based compensation	160,182	180,675
Deferred lease obligation	182,550	274,164
Other timing differences	51,314	41,045
Deferred Tax Assets, Gross	9,247,275	11,401,819
Less valuation allowance	(9,028,241)	(11,103,399)
Total deferred tax assets	219,034	298,420
Deferred tax liabilities:
Fixed assets	(219,034)	(298,420)
Goodwill	(6,166)
Total deferred tax liabilities	(225,200)	$ (298,420)
Total deferred tax liabilities	$ (6,166)

Income Taxes - Summary of Recon

Income Taxes - Summary of Reconciliation of Unrecognized Tax Benefit Activity (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Beginning unrecognized tax benefits	$ 1,408,000	$ 1,408,000
Decreases related to prior year tax positions	(53,000)
Increases related to current year tax positions	177,000
Ending unrecognized tax benefits	$ 1,532,000	$ 1,408,000

Stockholders' Equity (Deficit59

Stockholders' Equity (Deficit) - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions

Aug. 17, 2016

Nov. 30, 2003

Sep. 30, 2003

Mar. 31, 2001

Jun. 30, 2000

Dec. 31, 2016

Dec. 31, 2003

Jun. 30, 2009

Mar. 31, 2008

Feb. 28, 2007

Feb. 28, 2006

Jun. 30, 2005

Class Of Stock [Line Items]

Proceeds from issuance of common stock

$ 15

Offering price per share

$ 76.80

Series A Preferred Stock

Class Of Stock [Line Items]

Preferred convertible stock, shares issued

313,500

Preferred convertible stock sold, per share

$ 3.84

Proceeds from sale of preferred convertible stock, gross

$ 1.2

Preferred stock annual dividend rate per share

0.0488

Preferred stock, liquidation preference per share

19.20

Convertible preferred stock conversion price per share

21.70

Series B Preferred Stock

Class Of Stock [Line Items]

Preferred convertible stock, shares issued

290,993

Preferred convertible stock sold, per share

$ 4.39

Proceeds from sale of preferred convertible stock, gross

$ 1.3

Additional number of shares issued for services and to satisfy debt obligation

866,613

Proceed from issuance of additional stock

$ 1.2

Preferred stock annual dividend rate per share

0

Convertible preferred stock conversion price per share

24.23

Series C Preferred Stock

Class Of Stock [Line Items]

Preferred convertible stock, shares issued

682,000

Preferred convertible stock sold, per share

$ 1

Proceeds from sale of preferred convertible stock, gross

$ 0.7

Preferred stock annual dividend rate per share

0

Convertible preferred stock conversion price per share

8.59

Series D Preferred Stock

Class Of Stock [Line Items]

Preferred convertible stock, shares issued

4,091,068

Preferred convertible stock sold, per share

$ 0.542

Proceeds from sale of preferred convertible stock, gross

$ 2.2

Preferred stock annual dividend rate per share

0.0488

Preferred stock, liquidation preference per share

2.168

Convertible preferred stock conversion price per share

5.42

Series E Preferred Redeemable Convertible Stock

Class Of Stock [Line Items]

Preferred convertible stock, shares issued

7,984,727

7,984,727

Preferred convertible stock sold, per share

$ 1.11

$ 1.11

Preferred stock, liquidation preference per share

4.44

Series F Preferred Redeemable Convertible Stock

Class Of Stock [Line Items]

Preferred convertible stock, shares issued

4,734,374

Preferred convertible stock sold, per share

$ 1.30

Preferred stock, liquidation preference per share

5.20

Series G Preferred Stock

Class Of Stock [Line Items]

Preferred convertible stock sold, per share

$ 1.30

$ 1.30

Preferred stock, liquidation preference per share

$ 5.20

Junior Convertible Preferred Stock [Member]

Class Of Stock [Line Items]

Preferred convertible stock, shares outstanding

1,678,450

Junior Convertible Preferred Stock [Member] | Minimum

Class Of Stock [Line Items]

Preferred stock ownership percentage

50.00%

Preferred Convertible Stock | IPO

Class Of Stock [Line Items]

Conversion of stock, shares converted

6,244,174

Conversion of stock, shares issued

753,611

Preferred stock dividends converted into common stock

505,576

Stockholders' Equity (Deficit60

Stockholders' Equity (Deficit) - Schedule of Common Stock Reserved for Future Issuance (Details) - shares	Dec. 31, 2016	Dec. 31, 2015
Class Of Stock [Line Items]
Common stock, reserved for future issuance	1,901,140	4,947,200
Conversion of Series A, B, C, And D Preferred Convertible Stock
Class Of Stock [Line Items]
Common stock, reserved for future issuance		753,687
Conversion of Series E, F, And G Preferred Redeemable Convertible Stock
Class Of Stock [Line Items]
Common stock, reserved for future issuance		2,327,170
Warrants Issued and Outstanding
Class Of Stock [Line Items]
Common stock, reserved for future issuance	51,003	788,338
Stock Option Awards Issued and Outstanding
Class Of Stock [Line Items]
Common stock, reserved for future issuance	1,040,387	756,692
Authorized for Grants under the 2013 Equity Incentive Plan
Class Of Stock [Line Items]
Common stock, reserved for future issuance	0	321,313
Authorized for Grants under the 2016 Equity Incentive Plan
Class Of Stock [Line Items]
Common stock, reserved for future issuance	709,750
Authorized for grants under the 2016 Employee Stock Purchase Plan
Class Of Stock [Line Items]
Common stock, reserved for future issuance	100,000

Preferred Redeemable Converti61

Preferred Redeemable Convertible Stock - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	Aug. 17, 2016	Jun. 30, 2012	Jun. 30, 2009	Mar. 31, 2008	Feb. 28, 2007	Feb. 28, 2006	Jun. 30, 2005	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Class Of Stock [Line Items]
Outstanding convertible promissory notes and accrued interest		$ 7.1
Common stock, offering price per share								$ 76.80
Common Stock
Class Of Stock [Line Items]
Conversion of stock, shares issued								127,143
Series E Preferred Redeemable Convertible Stock
Class Of Stock [Line Items]
Preferred convertible stock, shares issued						7,984,727	7,984,727
Preferred convertible stock sold, per share						$ 1.11	$ 1.11
Gross proceeds from sale of convertible preferred stock						$ 8.8	$ 8.8
Conversion of preferred stock to common stock, conversion price								$ 11.11
Series F Preferred Redeemable Convertible Stock
Class Of Stock [Line Items]
Preferred convertible stock, shares issued					4,734,374
Preferred convertible stock sold, per share					$ 1.30
Gross proceeds from sale of convertible preferred stock					$ 6.2
Conversion of preferred stock to common stock, conversion price								13
Series G Preferred Stock
Class Of Stock [Line Items]
Preferred convertible stock sold, per share			$ 1.30	$ 1.30
Gross proceeds from sale of convertible preferred stock			$ 4.3	$ 4.3
Preferred stock, shares issued upon conversion			463,856	6,216,607
Preferred stock, conversion price per share			$ 1.30	$ 1.04
Conversion of preferred stock to common stock, conversion price								$ 13
Senior Preferred Stock
Class Of Stock [Line Items]
Dividend rate, percentage								8.00%
Preferred convertible stock, shares outstanding								4,875,000
Senior Preferred Stock | Minimum
Class Of Stock [Line Items]
Preferred stock ownership percentage								50.00%
Firm Commitment | Common Stock | Minimum
Class Of Stock [Line Items]
Aggregate proceeds from issuance of private placement								$ 15
Common stock, offering price per share								$ 76.80
Preferred Redeemable Convertible Stock
Class Of Stock [Line Items]
Preferred convertible stock, shares outstanding									23,271,702	23,055,356
Conversion of stock, shares issued								(23,271,702)
Preferred Redeemable Convertible Stock | IPO
Class Of Stock [Line Items]
Conversion of stock, shares converted	23,271,702
Conversion of stock, shares issued	2,327,122
Preferred stock dividends converted into common stock	1,451,631

Preferred Redeemable Converti62

Preferred Redeemable Convertible Stock - Schedule of Preferred Redeemable Convertible Stock (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Class Of Stock [Line Items]
Effect of accretion to redemption value	$ 1,356,707	$ 2,157,550	$ 2,144,434
Conversion of warrants	$ 249,215
Preferred Redeemable Convertible Stock
Class Of Stock [Line Items]
Beginning balance, Shares	23,271,702	23,055,356
Exercise of warrants, Shares		216,346
Conversion of warrants, shares	(23,271,702)
Ending balance, Shares		23,271,702	23,055,356
Beginning balance, Amount	$ 43,106,906	$ 40,724,356
Exercise of warrants, Amount		225,000
Effect of accretion to redemption value	1,356,707	2,157,550
Conversion of warrants	$ (44,463,613)
Ending balance, Amount		$ 43,106,906	$ 40,724,356

Warrants - Additional Informati

Warrants - Additional Information (Details) - USD ($)	May 24, 2016	Apr. 02, 2015	May 31, 2016	Dec. 31, 2015	Dec. 31, 2016
Class Of Warrant Or Right [Line Items]
Common stock issued for warrants exercised			127,143
Number of warrants outstanding					0
Fair value inputs, discount rate	20.00%			21.00%
Fair value of Warrants	$ 249,215			$ 709,504
Series G Preferred Stock
Class Of Warrant Or Right [Line Items]
Extended exercise period		1 year
Incremental expense				$ 343,446

Warrants - Schedules of Warrant

Warrants - Schedules of Warrants Outstanding (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Class Of Warrant Or Right [Line Items]
Number of warrants outstanding	0
Series G Preferred Redeemable Convertible Stock
Class Of Warrant Or Right [Line Items]
Number of warrants outstanding		7,883,377
Issuance date	April 2010 through September 2012
Expiration dates	Various through September 2017
Exercise price(s)		$ 1.04
Common share equivalent if exercised and converted		788,338

Stock Options - Additional Info

Stock Options - Additional Information (Details) - USD ($)

Jun. 18, 2015

Mar. 18, 2015

Feb. 28, 2014

Mar. 31, 2015

Dec. 31, 2014

Sep. 30, 2014

Jun. 30, 2014

Mar. 31, 2014

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Dec. 31, 2003

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Common stock, reserved for future issuance

1,901,140

4,947,200

Weighted average grant-date fair value of options granted

$ 1.23

$ 0.84

$ 1.43

Stock options vested aggregate intrinsic value

$ 7,770,086

Stock options expected to vest aggregate intrinsic value

$ 4,569,243

Total grant date fair value of shares vested

176,597

345,174

621,709

Stock-based compensation

$ 298,535

$ 341,554

$ 657,730

Restricted Stock

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Total unrecognized compensation cost related to unvested stock options and restricted stock granted under the plans

$ 522,818

$ 214,304

Unrecognized compensation cost related to unvested stock options and restricted stock granted under the plans, period for recognition

3 years

Restricted Stock | Chief Executive Officer

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Restricted common stock granted

50,000

260,924

Fair value of common stock granted, per share

$ 2.20

Vested percentage of common stock

68.75%

6.25%

6.25%

6.25%

6.25%

6.25%

Stock-based compensation

$ 0

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

Minimum

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Service period for stock options granted to employees

1 year

Maximum

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Service period for stock options granted to employees

4 years

Authorized for Grants under the 2016 Equity Incentive Plan

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Common stock, reserved for future issuance

709,750

Rolled from 2013 Equity Incentive Plan to 2016 Equity Incentive Plan

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Common stock, reserved for future issuance

429,750

Authorized for Grants under the 2013 Equity Incentive Plan

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Common stock, reserved for future issuance

0

321,313

Increase in share reserved for issuance

300,000

300,000

Common stock authorized under equity incentive plan

1,200,000

Vested options cancellation days, after termination of employee

90 days

2003 Equity Incentive Plan

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Common stock, reserved for future issuance

0

Common stock authorized under equity incentive plan

600,000

Stock Options - Weighted Averag

Stock Options - Weighted Average Assumptions Used in Estimating Fair Value of Stock Options (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based compensation arrangement by share-based payment award, Fair value assumptions and methodology
Expected dividend yield	0.00%	0.00%	0.00%
Expected volatility	41.82%	56.74%	64.40%
Expected term (years)	6 years 26 days	5 years 5 months 1 day	5 years 8 months 27 days
Risk-free interest rate	1.60%	1.70%	1.90%

Stock Options - Summary of Outs

Stock Options - Summary of Outstanding Stock Option Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of shares, Beginning balance	756,692	504,550	364,450
Number of shares, Granted	359,319	512,402	255,600
Number of shares, Exercised	(58,155)	(24,260)	(100)
Number of shares, Expired/Forfeited	(17,469)	(236,000)	(115,400)
Number of shares, Ending balance	1,040,387	756,692	504,550	364,450
Number of shares, Vested and exercisable	628,933
Number of shares, Vested and expected to vest	1,012,596
Weighted average exercise price, Beginning balance	$ 2.10	$ 2.60	$ 2.73
Weighted average exercise price, Granted	2.60	2	2.70
Weighted average exercise price, Exercised	2.36	3.19	2.20
Weighted average exercise price, Expired/Forfeited	2.13	2.77	3.22
Weighted average exercise price, Ending balance	2.25	$ 2.10	$ 2.60	$ 2.73
Weighted average exercise price, Vested and exercisable	2.05
Weighted average exercise price, Vested and expected to vest	$ 2.24
Weighted average remaining contractual term	7 years 9 months 18 days	7 years 7 months 6 days	5 years 9 months 18 days	4 years 3 months 18 days
Weighted average remaining contractual term, Granted	9 years 4 months 24 days	9 years 2 months 12 days	9 years 2 months 12 days
Weighted average remaining contractual term, Exercised	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
Weighted average remaining contractual term, Vested and expected to vest	7 years 9 months 18 days

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Chief Executive Officer
Commitment And Contingencies [Line Items]
Contingent Severance cost			$ 575,000
Severance cost, description	These agreements provide severance in the aggregate amount of $575,000 for termination without cause as defined in the agreements.
Office Space and Research Facilities Lease
Commitment And Contingencies [Line Items]
Operating leases, rent expense	$ 742,829	$ 672,526	$ 584,269
Lease agreement description	The new 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
Office Space and Research Facilities Lease | Maximum
Commitment And Contingencies [Line Items]
Payments for tenant improvements allowance	$ 515,000

Commitments and Contingencies69

Commitments and Contingencies - Schedule Future Minimum Lease Payments Under Operating Leases (Detail)	Dec. 31, 2016USD ($)
Future minimum lease payment
2,017	$ 791,285
2,018	542,404
2,019	517,973
2,020	265,940
Total future minimum lease payment	$ 2,117,601

Concentration of Credit Risk -

Concentration of Credit Risk - Additional Information (Details) - Vendor	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
China
Concentration Risk [Line Items]
Number of vendors	2	2	2
Customer Concentration Risk | Net Revenue
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%
Customer Concentration Risk | Net Revenue | China
Concentration Risk [Line Items]
Concentration risk percentage	74.00%	64.00%	68.00%
Customer Concentration Risk | Trade Accounts Receivable
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%

Concentration of Credit Risk 71

Concentration of Credit Risk - Schedule of Concentration of Sales and Accounts Receivable (Details) - Customer Concentration Risk	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net Revenue
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%
Net Revenue | Customer A
Concentration Risk [Line Items]
Concentration risk percentage	31.00%	28.00%	11.00%
Net Revenue | Customer B
Concentration Risk [Line Items]
Concentration risk percentage	20.00%	15.00%	29.00%
Net Revenue | Customer C
Concentration Risk [Line Items]
Concentration risk percentage	6.00%	12.00%	9.00%
Trade Accounts Receivable
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%
Trade Accounts Receivable | Customer A
Concentration Risk [Line Items]
Concentration risk percentage	18.00%	12.00%	12.00%
Trade Accounts Receivable | Customer B
Concentration Risk [Line Items]
Concentration risk percentage	16.00%	1.00%	1.00%
Trade Accounts Receivable | Customer C
Concentration Risk [Line Items]
Concentration risk percentage	13.00%	0.00%	7.00%
Trade Accounts Receivable | Customer D
Concentration Risk [Line Items]
Concentration risk percentage	13.00%	23.00%	12.00%

Concentration of Credit Risk 72

Concentration of Credit Risk - Schedule of Revenue by Geography (Details) - Customer Concentration Risk - Net Revenue	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%
China
Concentration Risk [Line Items]
Concentration risk percentage	74.00%	64.00%	68.00%
Other Asia
Concentration Risk [Line Items]
Concentration risk percentage	11.00%	21.00%	15.00%
North America
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	9.00%	11.00%
Europe
Concentration Risk [Line Items]
Concentration risk percentage	5.00%	6.00%	6.00%

Related-Party Transactions - Ad

Related-Party Transactions - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Chief Executive Officer
Related Party Transaction [Line Items]
Note to employee			$ 266,282
Forgiveness of note to employee		$ 266,282
Additional expense related to loan forgiveness to employee		236,414
GEN3 Partners
Related Party Transaction [Line Items]
Professional services expensed	$ 0	$ 0	$ 9,000

Quarterly Financial Informati74

Quarterly Financial Information (unaudited) - Summary of Quarterly Results of Operations (Detail) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 12,625,966	$ 12,439,279	$ 9,856,317	$ 8,512,305	$ 9,333,483	$ 6,668,732	$ 6,058,125	$ 5,732,733	$ 43,433,867	$ 27,793,073	$ 25,509,572
Gross Profit	5,476,403	5,576,287	4,546,761	3,677,624	3,842,816	2,775,075	2,544,324	2,482,695	19,277,075	11,644,910	11,377,215
Total operating expenses	4,345,198	4,345,965	3,572,915	3,560,830	3,646,865	2,846,106	2,717,331	2,765,309	15,824,908	11,975,611	10,526,615
Net income (loss)	$ 1,100,302	$ 1,183,044	$ 1,311,209	$ 139,153	$ (42,159)	$ 669	$ (171,352)	$ (57,500)	$ 3,733,707	$ (270,342)	$ 3,588,300
Basic net income (loss) per share	$ 0.14	$ 0.21	$ 0.97	$ (0.70)	$ (0.99)	$ (0.93)	$ (1.20)	$ (1.05)	$ 0.65	$ (4.17)	$ 2.08
Diluted net income (loss) per share	$ 0.12	$ 0.16	$ 0.15	$ (0.82)	$ (0.99)	$ (1.05)	$ (1.22)	$ (1.44)	$ 0.40	$ (4.30)	$ (2.86)