10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

(Mark One)

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2018

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

FOR THE TRANSITION PERIOD FROM       TO       

Commission file number: 001-37851

AIRGAIN, INC.

(Exact name of registrant as specified in its charter)

Delaware	95-4523882
(State or Other Jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification No.)
3611 Valley Centre Drive, Suite 150 San Diego, CA	92130
(Address of Principal Executive Offices)	(Zip Code)

(760) 579-0200

(Registrant’s Telephone Number, Including Area Code)

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes ☒  No ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).  Yes ☒  No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer”, “accelerated filer”, “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	☐		Accelerated filer	☒
Non-accelerated filer	☐	(Do not check if a smaller reporting company)	Smaller reporting company	☐
Emerging growth company	☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐

Indicate by check mark whether registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  ☐ Yes  ☒  No

As of May 8, 2018, the registrant had 9,669,962 shares of Common Stock (par value $0.0001) outstanding.

AIRGAIN, INC.

TABLE OF CONTENTS

PART I. FINANCIAL INFORMATION
Item 1. Financial Statements	3
Unaudited Condensed Balance Sheets as of March 31, 2018 and December 31, 2017	3
Unaudited Condensed Statements of Operations for the Three Months Ended March 31, 2018 and 2017	4
Unaudited Condensed Statements of Comprehensive Income (Loss) for the Three Months Ended March 31, 2018 and 2017	5
Unaudited Condensed Statement of Stockholders’ Equity for the three months ended March 31, 2018	6
Unaudited Condensed Statements of Cash Flows for the three months ended March 31, 2018 and 2017	7
Notes to Unaudited Condensed Financial Statements	8
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	19
Item 3. Quantitative and Qualitative Disclosures about Market Risk	26
Item 4. Controls and Procedures	26
PART II. OTHER INFORMATION
Item 1. Legal Proceedings	28
Item 1A. Risk Factors	29
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	30
Item 3. Defaults Upon Senior Securities	31
Item 4. Mine Safety Disclosures	31
Item 5. Other Information	31
INDEX TO EXHIBITS	32
SIGNATURES	33

PART I. FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

Airgain, Inc.

Unaudited Condensed Balance Sheets

	March 31, 2018			December 31, 2017
Assets
Current assets:
Cash and cash equivalents	$	15,462,507		$	15,026,068
Short term investments		17,515,408			21,287,064
Trade accounts receivable		8,180,047			8,418,132
Inventory		518,688			741,557
Prepaid expenses and other current assets		1,182,034			609,786
Total current assets		42,858,684			46,082,607
Property and equipment, net		1,418,657			1,036,860
Goodwill		3,700,447			3,700,447
Customer relationships, net		3,955,168			4,075,918
Intangible assets, net		1,003,737			1,052,333
Other assets		288,132			349,743
Total assets	$	53,224,825		$	56,297,908
Liabilities and stockholders’ equity
Current liabilities:
Accounts payable	$	4,215,806		$	3,969,083
Accrued bonus		718,924			2,224,517
Accrued liabilities		1,081,278			1,121,833
Deferred purchase price		1,000,000			1,000,000
Current portion of long-term notes payable		1,000,000			1,333,333
Current portion of deferred rent obligation under operating lease		81,332			81,332
Total current liabilities		8,097,340			9,730,098
Deferred tax liability		10,563			7,971
Deferred rent obligation under operating lease		319,182			334,860
Total liabilities		8,427,085			10,072,929
Stockholders’ equity:
Common shares, par value $0.0001, 200,000,000 shares authorized at March 31, 2018 and December 31, 2017; 9,669,962 and 9,616,992 shares issued at March 31, 2018 and December 31, 2017, respectively; 9,448,794 and 9,481,992 shares outstanding at March 31, 2018 and December 31, 2017, respectively		966			961
Additional paid in capital		90,370,362			89,907,766
Treasury stock, at cost: 221,168 shares and 135,000 shares at March 31, 2018 and December 31, 2017, respectively		(2,037,013	)		(1,257,100	)
Accumulated other comprehensive loss		(21,043	)		(16,907	)
Accumulated deficit		(43,515,532	)		(42,409,741	)
Total stockholders’ equity		44,797,740			46,224,979
Commitments and contingencies (note 14)
Total liabilities and stockholders’ equity	$	53,224,825		$	56,297,908

See accompanying notes to unaudited condensed financial statements.

3

Airgain, Inc.

Unaudited Condensed Statements of Operations

	Three Months Ended March 31,
	2018			2017
Sales	$	13,305,098		$	11,252,417
Cost of goods sold		7,110,927			5,963,959
Gross profit		6,194,171			5,288,458
Operating expenses:
Research and development		2,269,114			1,596,799
Sales and marketing		2,884,386			1,628,141
General and administrative		2,204,340			1,638,039
Total operating expenses		7,357,840			4,862,979
Income (loss) from operations		(1,163,669	)		425,479
Other expense (income):
Interest income		(110,431	)		(37,201	)
Interest expense		13,904			30,764
Total other income		(96,527	)		(6,437	)
Income (loss) before income taxes		(1,067,142	)		431,916
Provision for income taxes		38,649			46,826
Net income (loss)	$	(1,105,791	)	$	385,090
Net income (loss) per share:
Basic	$	(0.12	)	$	0.04
Diluted	$	(0.12	)	$	0.04
Weighted average shares used in calculating income (loss) per share:
Basic		9,479,742			9,359,562
Diluted		9,479,742			10,201,606

See accompanying notes to unaudited condensed financial statements.

4

Airgain, Inc.

Unaudited Condensed Statement of Comprehensive Income (Loss)

	Three Months Ended March 31,
	2018			2017
Net income (loss)	$	(1,105,791	)	$	385,090
Unrealized loss on available-for-sale securities		(4,136	)		—
Total comprehensive income (loss)	$	(1,109,927	)	$	385,090

See accompanying notes to unaudited condensed financial statements.

5

Airgain, Inc.

Unaudited Condensed Statement of Stockholders’ Equity

	Common Stock					Additional Paid-in		Treasury			Accumulated Other Comprehensive			Accumulated			Total Stockholders’
	Shares			Amount		Capital		Stock			Loss			Deficit			Equity
Balance at December 31, 2017		9,481,992		$	961	$	89,907,766	$	(1,257,100	)	$	(16,907	)	$	(42,409,741	)	$	46,224,979
Stock-based compensation		—			—		358,896		—			—			—			358,896
Exercise of stock options		52,970			5		103,700		—			—			—			103,705
Common stock repurchases		(86,168	)		—		—		(779,913	)		—			—			(779,913	)
Unrealized loss on available-for-sale securities		—			—		—		—			(4,136	)		—			(4,136	)
Net loss		—			—		—		—			—			(1,105,791	)		(1,105,791	)
Balance at March 31, 2018		9,448,794		$	966	$	90,370,362	$	(2,037,013	)	$	(21,043	)	$	(43,515,532	)	$	44,797,740

See accompanying notes to unaudited condensed financial statements.

6

Airgain, Inc.

Unaudited Condensed Statements of Cash Flows

	Three Months Ended March 31,
	2018			2017
Cash flows from operating activities:
Net income (loss)	$	(1,105,791	)	$	385,090
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation		121,417			115,447
Amortization		169,346			97,346
Amortization of discounts on investments, net		(8,280	)		—
Stock-based compensation		358,896			73,475
Deferred tax liability		2,592			9,834
Changes in operating assets and liabilities:
Trade accounts receivable		238,085			(2,357,941	)
Inventory		222,869			38,494
Prepaid expenses and other assets		(510,637	)		(75,203	)
Accounts payable		246,723			42,917
Accrued bonus		(1,505,593	)		(1,149,076	)
Accrued liabilities		(40,555	)		(268,306	)
Deferred obligation under operating lease		(15,678	)		(30,739	)
Net cash used in operating activities		(1,826,606	)		(3,118,662	)
Cash flows from investing activities:
Purchases of available-for-sale securities		(3,724,200	)		—
Maturities of available-for-sale securities		7,500,000			—
Purchases of property and equipment		(503,214	)		(119,312	)
Net cash provided by (used in) investing activities		3,272,586			(119,312	)
Cash flows from financing activities:
Repayment of notes payable		(333,333	)		(388,563	)
Reversal of costs related to initial public offering		—			781
Common stock repurchases		(779,913	)		—
Proceeds from exercise of stock options		103,705			323,651
Net cash used in financing activities		(1,009,541	)		(64,131	)
Net increase (decrease) in cash and cash equivalents		436,439			(3,302,105	)
Cash and cash equivalents, beginning of period		15,026,068			45,161,403
Cash and cash equivalents, end of period	$	15,462,507		$	41,859,298
Supplemental disclosure of cash flow information
Interest paid	$	15,340		$	32,508
Taxes paid	$	7,409		$	—

See accompanying notes to unaudited condensed financial statements.

7

Airgain, Inc.

Notes to Unaudited Condensed Financial Statements

Note 1. Basis of Presentation

Business Description

Airgain, Inc. (the Company) was incorporated in the State of California on March 20, 1995 and reincorporated in the State of Delaware on August 15, 2016. The Company is a leading provider of advanced antenna technologies used to enable high performance wireless networking across a broad range of devices and markets, including connected home, enterprise, automotive and Internet of Things (IoT). The Company designs, develops, and engineers its antenna products for original equipment and design manufacturers worldwide.  The Company’s headquarters is in San Diego, California with office space and research facilities in the United States, United Kingdom and China.  

Basis of Presentation

The accompanying unaudited condensed financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) and applicable rules and regulations of the Securities and Exchange Commission (SEC) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Interim financial results are not necessarily indicative of results anticipated for the full year. As such, the information included in this quarterly report on Form 10-Q should be read in conjunction with the financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2017, from which the balance sheet information herein was derived.  

The condensed balance sheet as of December 31, 2017 included herein was derived from the audited financial statements as of that date but does not include all disclosures including notes required by GAAP.

The condensed statements of operations for the three months ended March 31, 2018 and March 31, 2017, and the balance sheet data as of March 31, 2018 have been prepared on the same basis as the audited financial statements.

In the opinion of management, the accompanying unaudited condensed financial statements reflect all adjustments, consisting of normal and recurring adjustments, necessary for a fair presentation of results of the Company’s operations and financial position for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full year ending December 31, 2018 or for any future period.   

Segment Information

The Company’s operations are located primarily in the United States, and most of its assets are located in San Diego, California and Scottsdale, Arizona. The Company operates in one segment related to the sale of antenna products. The Company’s chief operating decision-maker is its chief executive officer, who reviews operating results on an aggregate basis and manages the Company’s opertions as a single operating segment.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include valuation of intangible assets and goodwill.

Fair Value Measurements

The carrying values of the Company’s financial instruments, including cash and cash equivalents, trade accounts receivable, accounts payable, accrued liabilities and debt approximate their fair values due to the short maturity of these instruments.

8

Fair value measurements are market-based measurements, not entity-specific measurements. Therefore, fair value measurements are determined based on the assumptions that market participants would use in pricing the asset or liability. The Company follows a three-level hierarchy to prioritize the inputs used in the valuation techniques to derive fair values. The basis for fair value measurements for each level within the hierarchy is described below:

• Level 1: Quoted prices in active markets for identical assets or liabilities.

• Level 2: Quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs are observable in active markets.

• Level 3: Valuations derived from valuation techniques in which one or more significant inputs are unobservable in active markets.

The Company’s accounting policy is to recognize transfers between levels of the fair value hierarchy on the date of the event or change in circumstances that caused the transfer. There were no transfers into or out of Level 1, Level 2, or Level 3 for the three months ended March 31, 2018 and for the year ended December 31, 2017.

Cash Equivalents and Short-Term Investments

Cash equivalents are comprised of short-term, highly liquid investments with maturities of 90 days or less at the date of purchase.  

Short-term investments consist predominantly of commercial paper, corporate debt securities, U.S. Treasury securities and asset backed securities.  The Company classifies short-term investments based on the facts and circumstances surrounding the investments at the time of purchase and evaluates such classification as of each balance sheet date.  All short-term investments are classified as available-for-sale securities as of March 31, 2018 and are recorded at estimated fair value.  Unrealized gains and losses for available-for-sale securities are included in accumulated other comprehensive income (loss), a component of stockholders’ equity.  Realized gains and losses are included in other income, in the unaudited condensed statement of operations.  The Company evaluates its investments to determine whether those with unrealized loss positions are other than temporarily impaired.  Impairments are considered to be other than temporary if they are related to deterioration in credit risk or if it is likely that the Company will sell the securities before recovery of their cost basis.  

Inventory

The 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.  With the acquisition of substantially all of the assets of Antenna Plus, LLC (“Antenna Plus”), in April 2017, the Company began manufacting products at its Scottsdale, Arizona and Shullsburg, Wisconsin locations.  In July 2017, the Company relocated all of its product manufacturing produced in Shullsburg, Wisconsin to the Scottsadale, Arizona facility.  See Note 6 for additional information relating to the Company’s acquisition of the Antenna Plus assets.  

Inventory is stated at the lower of cost or net realizable value.  For items manufactured by the Company, cost is determined using the weighted average cost method.  For items manufactured by third parties, cost is determined using the first-in, first-out method (FIFO).  Any adjustments to reduce the cost of inventories to their net realizable value are recognized in earnings in the current period.  As of March 31, 2018, the Company’s inventories consist primarily of raw materials.  Provisions for excess and obsolete inventories are estimated based on product life cycles, quality issues, and historical experience.  As of March 31, 2018, there is no provision for excess and obsolete inventories.    

Accumulated Other Comprehensive Income (Loss)

Comprehensive income (loss) is comprised of net income (loss) and other comprehensive income (loss).  Accumulated other comprehensive income (loss) on the unaudited condensed balance sheet at March 31, 2018 includes unrealized gains and losses on the Company’s available-for-sale securities.  

Note 2. Summary of Significant Accounting Policies

During the three months ended March 31, 2018, there have been no material changes to the Company’s significant accounting policies as described in the Annual Report on Form 10-K for the fiscal year ended December 31, 2017.  

Recent Accounting Pronouncements

9

In February 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-02, Leases (Topic 842), which requires lessees to recognize most leases on their balance sheets as lease liabilities with corresponding right-of-use assets. For public entities, ASU 2016-02 is effective for annual periods beginning after December 15, 2018, including interim periods within those fiscal years. For nonpublic entities, ASU 2016-02 is effective for fiscal year beginning after December 15, 2019 and interim periods within fiscal years beginning after December 15, 2020.  The Company is evaluating the effect that ASU 2016-02 will have on its financial statements and related disclosures.  The Company has not yet selected a transition method, nor has it determined the effect of the standard on its ongoing financial reporting.  

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The standard will replace most existing revenue recognition guidance in GAAP when it becomes effective. For public entities, ASU 2014-09 is effective for reporting periods beginning after December 15, 2017, including interim periods within that reporting period. For nonpublic entities, ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2018 and interim periods within those periods. The standard permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the effect that ASU 2014-09 will have on its financial statements and related disclosures. The Company has not yet selected a transition method nor has it determined the effect of the standard on the Company’s ongoing financial reporting.

Note 3. Net Income (Loss) Per Share

Basic net income (loss) per share is calculated by dividing net income (loss) by the weighted average shares of common stock outstanding for the period. Diluted net income (loss) per share is calculated by dividing net income (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. The Company calculates diluted earnings 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 (loss) per share:

	Three Months Ended March 31,
	2018			2017
Numerator:
Net income (loss)	$	(1,105,791	)	$	385,090
Denominator:
Weighted average common shares outstanding - basic		9,479,742			9,359,562
Plus dilutive effect of potential common shares		—			842,044
Weighted average common shares outstanding - diluted		9,479,742			10,201,606
Net income (loss) per share:
Basic	$	(0.12	)	$	0.04
Diluted	$	(0.12	)	$	0.04

Diluted weighted average common shares outstanding for the three months ended March 31, 2017 includes 10,532 warrants and 831,512 options outstanding.

Potentially dilutive securities not included in the calculation of diluted net income (loss) per share because to do so would be anti-dilutive are as follows:

	Three Months Ended March 31,
	2018		2017
Employee stock options		1,159,062		6,581
Warrants outstanding		51,003		—
Total		1,210,065		6,581

Note 4. Cash, Cash Equivalents and Short-Term Investments

The following table shows the Company’s cash and cash equivalents and short-term investments by significant investment category as of March 31, 2018:

10

	March 31, 2018
	Amortized Cost		Gross Unrealized Losses			Estimated Fair Value		Cash and Cash Equivalents		Short-Term Investments
Cash	$	3,692,893	$	—		$	3,692,893	$	3,692,893	$	—
Level 1 (1):
Money market funds		5,031,300		—			5,031,300		5,031,300		—
U.S. treasury securities		2,492,664		(5,660	)		2,487,004		—		2,487,004
Subtotal		7,523,964		(5,660	)		7,518,304		5,031,300		2,487,004
Level 2 (2):
Commercial paper		10,460,305		—			10,460,305		2,987,944		7,472,361
Corporate debt obligations		4,551,681		(9,610	)		4,542,071		—		4,542,071
Repurchase agreements		3,000,450		—			3,000,450		3,000,450		—
Asset-backed securities		3,769,665		(5,773	)		3,763,892		749,920		3,013,972
Subtotal		21,782,101		(15,383	)		21,766,718		6,738,314		15,028,404
Total	$	32,998,958	$	(21,043	)	$	32,977,915	$	15,462,507	$	17,515,408

	December 31, 2017
	Amortized Cost		Gross Unrealized Losses			Estimated Fair Value		Cash and Cash Equivalents		Short-Term Investments
Cash	$	3,040,696	$	—		$	3,040,696	$	3,040,696	$	—
Level 1 (1):
Money market funds		8,234,751		—			8,234,751		8,234,751		—
U.S. treasury securities		2,490,799		(5,540	)		2,485,259		—		2,485,259
Subtotal		10,725,550		(5,540	)		10,720,010		8,234,751		2,485,259
Level 2 (2):
Commercial paper		9,716,093		—			9,716,093		—		9,716,093
Corporate debt obligations		6,829,191		(9,414	)		6,819,777		—		6,819,777
Repurchase agreements		3,000,233		—			3,000,233		3,000,233		—
Asset-backed securities		3,018,276		(1,953	)		3,016,323		750,388		2,265,935
Subtotal		22,563,793		(11,367	)		22,552,426		3,750,621		18,801,805
Total	$	36,330,039	$	(16,907	)	$	36,313,132	$	15,026,068	$	21,287,064

(1) Level 1 fair value estimates are based on quoted prices in active markets for identical assets or liabilities.

(2) Level 2 fair value estimates are based on observable inputs other than quoted prices in active markets for identical assets and liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.  

The Company’s investments were primarily valued based upon one or more valuations reported by its investment accounting and reporting service provider.  The investment service provider values the securities using a hierarchical security pricing model that relies primarily on valuations provided by a third-party pricing vendor.  Such valuations may be based on trade prices in active markets for identical assets or liabilities (Level 1 inputs) or valuation models using inputs that are observable either directly or indirectly (Level 2 inputs), such as quoted prices for similar assets or liabilities, yield curve, volatility factors, credit spreads, default rates, loss severity, current market and contractual prices for underlying instruments or debt, broker and dealer quotes, as well as other relevant economic measures.  The Company performs certain procedures to corroborate the fair value of its holdings, including comparing valuations obtained from its investment service provider with other pricing sources to validate the reasonableness of the valuations.    

The Company typically invests in highly-rated securities, and its investment policy limits the amount of credit exposure to any one issuer.  The policy requires investments in fixed income instruments denominated and payable in U.S. dollars only and requires investments to be investment grade, with a primary objective of minimizing the potential risk of principal loss.  

The following table presents the Company’s short-term investments with unrealized losses by investment category and length of time that individual securities have been in a continuous unrealized loss position as of March 31, 2018:

11

	Less Than 12 Months
Description of Securities	Estimated Fair Value		Unrealized Losses
March 31, 2018
U.S. treasury securities	$	2,487,004	$	(5,660	)
Corporate debt obligations		4,542,071		(9,610	)
Asset-backed securities		3,013,972		(5,773	)
Total	$	10,043,047	$	(21,043	)

The Company considers the declines in market value of its short-term investments to be temporary in nature.  Fair values were determined for each individual security in the investment portfolio.  When evaluating an investment for other-than-temporary impairment, the Company reviews factors such as length of time and extent to which fair value has been below its cost basis, the financial condition of the issuer and any changes thereto, changes in market interest rates and the Company’s intent to sell, or whether it is more likely than not it will be required to sell the investment before recovery of the investment’s cost basis.  As of March 31, 2018, the Company does not consider any of its investments to be other-than temporarily impaired.

Contractual maturities of short-term investments as of March 31, 2018 are as follows:

	Estimated Fair Value
Due within one year	$	17,515,408
Total	$	17,515,408

Note 5. 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 to five years for all other property and equipment.  Property and equipment consist of the following:

	March 31,			December 31,
	2018			2017
Lab equipment	$	2,228,032		$	1,914,911
Computer equipment		169,366			169,366
Computer software		306,767			299,227
Furniture and fixtures		202,218			202,218
Tenant improvements		894,756			763,898
Other office equipment		115,520			63,825
		3,916,659			3,413,445
Less accumulated depreciation		(2,498,002	)		(2,376,585	)
	$	1,418,657		$	1,036,860

Depreciation expense was $121,417 and $115,447 for the three months ended March 31, 2018 and 2017, respectively.

Note 6. Acquisitions

Antenna Plus

On April 27, 2017, the Company completed the acquisition of substantially all of the assets of Antenna Plus.  Antenna Plus is a supplier of antenna-based solutions for mobile and automotive fleet applications for government, public safety, and Industrial Internet of Things (IOT) markets.  The acquisition provides leverage for the Company’s existing products into several new markets, including the fast-growing automotive fleet and industrial IOT space.

The transaction was completed pursuant to an Asset Purchase Agreement with MCA Financial Group, Ltd., acting as the court-appointed receiver for Antenna Plus.  Upon the closing of the transaction, the Company paid to Antenna Plus total consideration of approximately $6.3 million in cash, net of post-closing working capital adjustments.  In addition, the Company assumed certain contracts and other liabilities of Antenna Plus, as expressly set forth in the Asset Purchase Agreement.

The following table shows the allocation of the purchase price for Antenna Plus to the acquired identifiable assets, liabilities assumed and goodwill:

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Consideration:
Cash	$	6,383,500
Working capital adjustments		(34,770	)
Fair value of total consideration transferred	$	6,348,730
Recognized amounts of identifiable assets acquired and liabilities assumed:
Accounts receivable	$	584,390
Inventory		432,770
Fixed assets		402,958
Intangible assets		2,600,000
Current liabilities		(121,879	)
Total identifiable net assets acquired		3,898,239
Goodwill		2,450,491
Total	$	6,348,730

Goodwill was primarily attributable to the anticipated synergies and economies of scale expected from the operations of the combined business.  The synergies include certain cost savings, operating efficiencies, and other strategic benefits projected to be achieved as a result of the acquisition.  Goodwill is expected to be deductible for tax purposes.

Revenue associated with the acquired Antenna Plus assets was $2.3 million for the three months ended March 31, 2018.  Cost of goods sold associated with the acquired Antenna Plus assets was $0.9 million for the three months ended March 31, 2018.  Net income associated with the acquired Antenna Plus assets was net income of $0.7 million for the three months ended March 31, 2018.  

Unaudited Pro Forma Information

The following unaudited pro forma financial information presents combined results of operations for each of the periods presented, as if Antenna Plus had been acquired as of the beginning of the fiscal year 2017.  The pro forma information includes adjustments to amortization and depreciation for intangible assets and property, plant and equipment acquired.  The pro forma data are for informational purposes only and are not necessarily indicative of the consolidated results of operations of the combined business had the acquisition actually occurred at the beginning of fiscal year 2017 or of the results of future operations of the combined business.  Consequently, actual results will differ from the unaudited pro forma information presented below:

	Three Months Ended March 31,
	2018			2017
Pro forma sales	$	13,305,098		$	13,026,993
Pro forma income from operations	$	(1,163,669	)	$	927,532
Pro forma net income	$	(1,105,791	)	$	887,143

Note 7. Intangible Assets

The following is a summary of the Company’s acquired intangible assets:

	March 31, 2018
	Weighted Average Amortization Period (years)		Gross Carrying Amount		Accumulated Amortization		Intangibles, Net
Customer relationships		10	$	4,830,000	$	874,832	$	3,955,168
Developed technologies		9		1,080,000		175,489		904,511
Tradename		3		120,000		36,667		83,333
Non-compete agreement		3		67,000		51,107		15,893
Total intangible assets, net		10	$	6,097,000	$	1,138,095	$	4,958,905

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	December 31, 2017
	Weighted Average Amortization Period (years)		Gross Carrying Amount		Accumulated Amortization		Intangibles, Net
Customer relationships		10	$	4,830,000	$	754,082	$	4,075,918
Developed technologies		9		1,080,000		142,477		937,523
Tradename		3		120,000		26,667		93,333
Non-compete agreement		3		67,000		45,523		21,477
Total intangible assets, net		10	$	6,097,000	$	968,749	$	5,128,251

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 result of acquisitions, divestitures, asset impairments, among other factors. Amortization expense was $169,346 and $97,346 for the three months ended March 31, 2018 and 2017, respectively.

	Estimated Future Amortization
2018 (remaining nine months)	$	507,182
2019		655,052
2020		627,667
2021		598,420
2022		563,000
Thereafter		2,007,584
Total	$	4,958,905

Note 8. Long-term Notes Payable (including current portion) and Line of Credit

In December 2013, the Company further amended its revolving line of credit under the amended and restated loan and security agreement with Silicon Valley Bank to include a growth capital term loan of up to $750,000. The growth capital term loan required interest only payments through June 30, 2014 at which point it was to be repaid in 32 equal monthly installments of interest and principal. The growth capital term loan matured on February 1, 2017, at which time $55,230 in principal and accrued interest was paid. The growth capital term loan interest rate was 6.5%.  As of March 31, 2018 and December 31, 2017, there was no balance owed under this loan.

In December 2015, the Company further amended its amended and restated 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. Effective September 2017, the Company further amended its amended and restated loan and security agreement with Silicon Valley Bank to update the financial covenants.  The amended and restated loan and security agreement requires the Company to maintain, at all times, measured as of the last day of each month (unless otherwise specified) either (i) a minimum cash balance of unrestricted cash at Silicon Valley Bank or its affiliate of not less than $25.0 million dollars or (ii) a liquidity ratio of 1.25 to 1.00 and a minimum EBITDA measured as of the last day of each fiscal quarter for the previous six month period. The interest rate is fixed at 5.0%.  

In January 2018, the Company entered into a second amended and restated loan and security agreement (the Amended Loan Agreement) with Silicon Valley Bank.  The Amended Loan Agreement modified the amended and restated loan and security agreement to, among other things, increase the aggregate principal amount available under the revolving line of credit from $3.0 million to $10.0 million and modify certain existing financial covenants.  There was no balance owed on the line of credit as of March 31, 2018 and December 31, 2017

Under the Amended Loan Agreement, the Company may borrow up to $10.0 million under the line of credit, subject to a borrowing base limit of 80% of the aggregate face amount of all eligible receivables.  The Amended Loan Agreement removed the minimum EBITDA requirement previously applicable to the line of credit and term loan and maintained the liquidity ratio financial covenant such that the Company must maintain a ratio of cash and cash equivalents plus accounts receivable outstanding debt under the Amended Loan Agreement minus deferred revenue of 1.25 to 1.00.  

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The Company will be required to pay interest on borrowings outstanding, if any, under the revolving line of credit at a floating rate per annum equal to 1% above the Wall Street Journal prime rate (4.75% as of March 31, 2018) (or, if unavailable, the Silicon Valley Bank prime rate) on a monthly basis, so long as the Company maintains a liquidity ratio of cash and cash equivalents plus accounts receivable to outstanding debt under the Amended Loan Agreement minus deferred revenue of 1.50 to 1.00.  If this liquidity ratio is not met, the Company will be subject to a minimum interest charge of $3,000 per month and borrowings outstanding, if any, under the revolving line of credit will accrue interest at a floating rate per annum equal to 2% above the Wall Street Journal prime rate (4.75% as of March 31, 2018) (or, if unavailable the Silicon Valley Bank prime rate) on a monthly basis.  Prior to the amendment in January 2018, the revolving line of credit bore interest rate at the U.S. prime rate plus 1.25%.  The revolving line of credit matures on January 31, 2020.    

Borrowings outstanding under the term loan under the amended and restated loan and security agreement will continue to be repaid in equal monthly installments of interest and principal and matures on December 1, 2018.

Silicon Valley Bank maintains a first security interest over the Company’s assets, excluding intellectual property, for which Silicon Valley Bank has received a negative pledge.  The Amended Loan Agreement contains customary affirmative and negative covenants and events of default applicable to the Company and any of its subsidiaries.    

The remaining principal payments on the $4.0 million term loan subsequent to March 31, 2018 are as follows:

Year ending:
2018 (remaining nine months)	$	1,000,000
	$	1,000,000

The Company was in compliance with its financial covenants in the Amended Loan Agreement as of March 31, 2018.

Note 9. Treasury Stock

In August 2017, the Company’s Board of Directors approved a share repurchase program pursuant to which the Company may purchase up to $7.0 million of shares of its common stock over the twelve month period following the establishment of the program.  The repurchases under the new share repurchase program are made from time to time in the open market or in privately negotiated transactions and are funded from the Company’s working capital. Repurchases will be made in compliance with Rule 10b-18 of the Securities Exchange Act of 1934, as amended, subject to market conditions, available liquidity, cash flow, applicable legal requirements and other factors.  All shares of common stock repurchased under the Company’s new share repurchase program will be returned to the status of authorized but unissued shares of common stock.  

During the three months ended March 31, 2018, the Company repurchased 86,168 shares of common stock under the repurchase program.  These shares were repurchased at an average price per share of $9.06 per share, for a total cost of $779,913.  As of March 31, 2018, the Company has repurchased a total of $2.0 million in common stock.     

Note 10. Income Taxes

The Company’s effective income tax rate was -3.62% and 10.84% for the three months ended March 31, 2018 and 2017, respectively.  The overall decrease in the effective income tax rate is largely as a result of prior year increases in uncertain tax positions, which occurred during the three months ended March 31, 2017.  The variance from the U.S. federal statutory tax rate of 21% and 34% for the three months ended March 31, 2018 and 2017, respectively, was primarily attributable to the utilization of deferred tax attributes that had a full valuation allowance.    

Management assesses its deferred tax assets quarterly to determine whether all or any portion of the asset is more likely than not unrealizable under Accounting Standards Codification (ASC) Topic 740.  The Company is required to establish a valuation allowance for any portion of the asset that management concludes is more likely than not to be unrealizable.  The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible.  The Company’s assessment considers all evidence, both positive and negative, including the nature, frequency and severity of any current and cumulative losses, taxable income in carryback years, the scheduled reversal of deferred tax liabilities, tax planning strategies, and projected future taxable income in making this assessment.  At March 31, 2018 and December 31, 2017, the Company has a valuation allowance against net deferred tax assets but for the exclusion of a deferred tax liability generated by goodwill (an indefinite lived intangible) that may not be considered a future source of taxable income in evaluating the need for a valuation allowance.

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Note 11. Stockholders’ Equity

Shares Reserved for Future Issuance

The following common stock is reserved for future issuance at March 31, 2018 and December 31, 2017:

	March 31, 2018 (1)		December31, 2017 (1)
Warrants issued and outstanding		51,003		51,003
Stock option awards issued and outstanding		1,735,458		1,203,627
Authorized for grants under the 2016 Equity Incentive Plan		427,530		633,052
Authorized for grants under the 2016 Employee Stock Purchase Plan		100,000		100,000
		2,313,991		1,987,682

(1) Treasury stock in the amount of 86,168 and 135,000 as of March 31, 2018 and December 31, 2017, respectively, are excluded from the table above.

Note 12. Stock Options

The following table summarizes the outstanding stock option activity during the periods indicated:

	Number of shares			Weighted average exercise price		Weighted average remaining contractual term
Balance at December 31, 2017		1,203,627		$	7.06		8.10
Granted		638,300			10.75		9.81
Exercised		(52,970	)		1.96		3.92
Expired/Forfeited		(53,499	)		9.55		0.06
Balance at March 31, 2018		1,735,458		$	8.49		8.57
Vested and exercisable at March 31, 2018		499,046		$	2.25		6.72
Vested and expected to vest at March 31, 2018		1,735,458		$	8.49		8.57

The weighted average grant date fair value of options granted during the three months ended March 31, 2018 and for the year ended December 31, 2017 was $4.31 and $6.02, respectively. For fully vested stock options, the aggregate intrinsic value as of March 31, 2018 and December 31, 2017 was $2,804,129 and $3,596,624, respectively. For stock options expected to vest, the aggregate intrinsic value as of March 31, 2018 and December 31, 2017 was $921,408 and $1,469,154, respectively.

At March 31, 2018 and December 31, 2017, there was $4,594,157 and $2,453,342, respectively, of total unrecognized compensation cost related to unvested stock options granted under the Company’s equity plans. That cost is expected to be recognized over the next three years and is based on the date the options were granted.

The Company currently uses authorized and unissued shares to satisfy share award exercises.

Note 13. Commitments and Contingencies

Operating Leases

The Company has entered into lease agreements for office space and research facilities in San Diego, California, Rancho Santa Fe, California, Poway, California, Melbourne, Florida, Scottsdale, Arizona, Taipei, Taiwan, Shenzhen and Jiangsu, China, and Cambridgeshire, United Kingdom. Rent expense was $232,947 and $183,615 for the three months ended March 31, 2018 and 2017, respectively. The longest lease expires in February 2022. The Company moved into its facility in San Diego, California during the year ended December 31, 2014. The San Diego facility lease agreement included a tenant improvement allowance which provided for the landlord to pay for tenant improvements on behalf of the Company up to $515,000. Based on the terms of this landlord incentive and involvement of the Company in the construction process, the leasehold improvements purchased under the landlord incentive were determined to be property of the Company.

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The future minimum lease payments required under operating leases in effect at March 31, 2018 were as follows:

Year ending:
2018 (remaining nine months)	$	782,298
2019		832,020
2020		502,461
2021		134,529
2022		22,527
	$	2,273,835

Note 14. Concentration of Credit Risk

(a) Concentration of Sales and Accounts Receivable

The following represents customers that accounted for 10% or more of total revenue during the three months ended March 31, 2018 and 2017 and customers that accounted for 10% or more of total trade accounts receivable at March 31, 2018 and 2017.

	Three Months Ended March 31,
	2018			2017
Percentage of net revenue
Customer A		30	%		22	%
Customer B		8			14
Customer C		4			13
	As of March 31,
	2018			2017
Percentage of gross trade accounts receivable
Customer A		22	%		14	%
Customer B		11			14
Customer C		6			16
Customer D		6			11

(b) Revenue by Geography

Net revenue by geographic area are as follows. Revenue is attributed by geographic location based on the bill-to location of the Company’s customers.

	Three Months Ended March 31,
	2018			2017
Percentage of net revenue
China		64	%		71	%
Other Asia		8			13
North America		22			10
Europe		6			6

Although the Company ships the majority of antennas to its customers in China (primarily Original Design Manufacturers and distributors), the end-users of the Company’s products are much more geographically diverse.

(c) Concentration of Purchases

During the three months ended March 31, 2018, all the Company’s products were manufactured by two vendors in China and by the Company’s facilities in Arizona.  During the three months ended March 31, 2017, all the Company’s products were manufactured by two vendors in China.  

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Note 15. Subsequent Events

On May 2, 2018, Charles Myers, Chief Executive Officer, President and member of the Company’s Board of Directors (the Board) resigned from all positions with the Company, effective immediately, to pursue other opportunities.  The Board accepted Mr. Myers resignation on May 2, 2018.  Mr. Myer’s decision to resign was not related to a disagreement with the Company over any of its operations, policies, or practices.  

In connection with his resignation, Mr. Myers will be eligible to receive the following severance benefits pursuant to a general release of claims as set forth in his employment agreement: a lump sum cash payment in the amount of $484,000; the reimbursement of business expenses in accordance with Company policies; the acceleration of all of his unvested options exercisable for a total of 282,994 shares; a lump sum payment in the amount of approximately $3,200 covering twelve months of monthly premiums for disability insurance under the Company’s disability insurance plan; and the continuation of his health coverage pursuant to COBRA at the Company’s expense for a period of twelve months following his last day of employment.  In connection with Mr. Myers’ resignation, the Company expects to book stock compensation expense of approximately $1.2 million for the three months ended June 30, 2018.  

Effective May 2, 2018, the Board appointed the Company’s current Chairman, James K. Sims, as interim Chief Executive Officer of the Company.  For his services as interim Chief Executive Officer, Mr. Sims will be paid a monthly retainer of $33,333, which equates to an annual retainer of $400,000 and was granted 175,000 options on May 8, 2018, which will vest in equal quarterly installments over the two years following his commencement of service as interim Chief Executive Officer, subject to his continued service in the role or as a member of the Board on each vesting date.  The stock options will also vest in full upon a change in control of the Company.    

On April 2, 2018, Glenn Selbo, Chief Operating Officer, resigned from his position with the Company.  Following his resignation, Mr. Selbo will be providing consulting services to the Company.  Mr. Selbo’s outstanding stock options will continue to vest during the term of his consulting services.  

In connection with his resignation, Mr. Selbo will be eligible to receive the following severance benefits pursuant to a general release of claims as set forth in his employment agreement: a lump cash payment in the amount of $150,000; and the continuation of his health coverage pursuant to COBRA at the Company’s expense for a period of six months following is last day of employment.  In connection with Mr. Selbo’s resignation, the Company expects to record stock compensation expense of approximately $44,000 for the three months ended June 30, 2018.  

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis and the interim unaudited condensed financial statements included in this quarterly report on Form 10-Q should be read in conjunction with the financial statements and notes thereto for the year ended December 31, 2017 and the related Management’s Discussion and Analysis of Financial Condition and Results of Operations, both of which are contained in our Annual Report on Form 10-K for the fiscal year ended December 31, 2017.

Forward-Looking Statements

This quarterly report on Form 10-Q contains forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended, or the Exchange Act. All statements other than statements of historical fact contained in this quarterly report, including statements regarding our future operating results, financial position and cash flows, our business strategy and plans and our objectives for future operations, are forward-looking statements. These statements involve known and unknown risks, uncertainties and other important factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements. In some cases, you can identify forward-looking statements by terms such as “may,” “will,” “would,” “could,” “should,” “expect,” “plan,” “anticipate,” “could,” “intend,” “target,” “project,” “contemplate,” “believe,” “estimate,” “predict,” “potential” or “continue” or the negative of these terms or other similar expressions. The forward-looking statements in this quarterly report are only predictions. We have based these forward-looking statements largely on our current expectations and projections about future events and financial trends that we believe may affect our financial condition, operating results, business strategy, short-term and long-term business operations and objectives. These forward-looking statements speak only as of the date of this quarterly report and are subject to a number of risks, uncertainties and assumptions, including those described in Part II, Item 1A, “Risk Factors.” The events and circumstances reflected in our forward-looking statements may not be achieved or occur and actual results could differ materially from those projected in the forward-looking statements. Moreover, we operate in a very competitive and rapidly changing environment. New risk factors and uncertainties may emerge from time to time, and it is not possible for management to predict all risk factors and uncertainties. Except as required by applicable law, we do not plan to publicly update or revise any forward-looking statements contained herein, whether as a result of any new information, future events, changed circumstances or otherwise.

Overview

We are a leading provider of advanced antenna technologies used to enable high performance wireless networking across a broad range of devices and markets, including connected home, enterprise, automotive, and Internet of Things, or IoT.  Our innovative antenna systems are designed to address key challenges with wireless system performance faced by our customers.  We provide solutions to complex Radio Frequency, or RF, engineering challenges and help improve wireless services that require higher throughput, broad coverage footprint, and carrier grade quality.  Our antennas are deployed in carrier, fleet, enterprise, residential, private, government, and public safety wireless networks and systems, including set-top boxes, access points, routers, modems, gateways, media adapters, portables, digital televisions, sensors, fleet and asset tracking devices.  Through our pedigree in the design, integration, and testing of high performance advanced antenna technology, we have become a leading provider to the residential wireless local area networking, also known as WLAN or Wi-Fi, market, supplying to leading carriers, Original Equipment Manufacturers, or OEMs, Original Design Manufacturers, or ODMs, and system designers who depend on us to achieve their wireless performance goals. We also develop embedded and external antenna technology for emerging technologies, such as Long-Term Evolution, or LTE, 5G, and low power wide area networking, or LPWAN.  

Our products are found in a broad range of devices that generally enable Wi-Fi connectivity for data and video coverage. We sell our products to OEMs and ODMs. These companies compete based on product performance, product features, price, and other factors. While our products are found in devices manufactured by global OEMs and ODMs, the products end up primarily in the end-user devices that are deployed in carrier, enterprise, and residential wireless networks and systems.  Our global sales force works with telecommunications and broadband carriers and retail-focused customers who seek high performance, reliable wireless solutions. By working with these end-user carriers and retail-focused customers, we seek to have service providers influence OEMs and ODMs to specify our antennas for the products they provide to their end-user customers. Our direct sales team works directly with customers, and also works with indirect channel partners who pursue sales opportunities that are based in the United States, Canada, Europe, and Asia Pacific.

Our sales cycle can be short or lengthy depending upon the specific situation; however, the majority of our revenues are derived from device designs with life-cycles of over 12 months. For some recurring customers, we are able to design and produce antenna systems for volume production in less than one calendar quarter. In situations where we are selling to a new customer, it may take 12 to 18 months from initial meeting to achieve a design win. Competition generally lengthens the sales process, but our past performance and ability to provide high throughput, highly reliable antenna solutions can shorten the process. We intend to continue

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investing for long-term growth. We have invested and expect to continue to invest heavily in our product development efforts to address customer needs, and enable solutions that can address new end markets, such as alternative wireless connectivity technologies. In addition, we expect to continue to expand our sales force and engineering organizations and to make additional capital expenditures to further penetrate markets both in the United States and internationally, and to continue to expand our research and development for new product offerings and technology solutions.

Although our sales cycle can be lengthy depending on the specific situation, the majority of our revenues are derived from device designs with life-cycles of over a year. In 2017, 45% of our product revenues were from devices in the marketplace for over two years, 30% for devices in the marketplace for one to two years and 25% for devices in the marketplace for less than one year.  For the three months ended March 31, 2018, 46% of our product revenues, excluding the revenues attributable to the acquisition of substantially all of the assets of Antenna Plus, LLC, or Antenna Plus, were from devices in the marketplace for over two years, 42% from devices in the marketplace for one to two years and 12% from devices in the marketplace for less than one year.  

We believe demand is growing rapidly for our advanced antenna solutions and there is a significant market opportunity. As the ability to provide mobile internet access has grown, our solutions and expertise have become more important to prospects and customers. As a passive component, embedded antennas can be viewed as a commodity. However, our design, engineering, and research show that antenna selection, placement, and testing can have significant improvements in device performance. We believe that we are chosen when performance is a more significant factor than price, and our distinctive focus on superior designs that provide increased range and throughput has allowed us to build a leadership position in the in-home WLAN device market.

Factors Affecting Our Operating Results

We believe that our performance and future success depend upon several factors including manufacturing costs, investments in our growth, our ability to expand into growing addressable markets, including the automotive, fleet and industrial IOT space, the average selling price of our products per device, the number of antennas per device, and our ability to diversify the number of devices that incorporate our antenna products. Our customers are extremely price conscious, and our operating results are affected by pricing pressure which may force us to lower prices below our established list prices. In addition, a few end-customer devices which incorporate our antenna products comprise a significant amount of our sales, and the discontinuation or modification of such devices may materially and adversely affect our sales and results of operations. Excluding the Antenna Plus acquisition, we have seen the number of devices decrease 2.3 million and number of antennas per device remain consistent for the three months ended March 31, 2018 as compared to the three months ended March 31, 2017. Our ability to maintain or increase our sales depends on new and existing end customers selecting our antenna solutions for their heterogeneous next-generation wireless devices and networks depends on the proliferation of Wi-Fi connected home devices and data intensive applications, investments in our growth to address customer needs, target new end markets, develop our product offerings and technology solutions and expand internationally, as well as successfully integrating past and any future acquisitions. While each of these areas presents significant opportunities for us, they also pose significant risks and challenges we must successfully address.  See the section entitled “Risk Factors.”

Seasonality

Our operating results historically have not been subject to significant seasonal variations.  However, our operating results are affected by how customers make purchasing decisions around local holidays in China.  For example, a national holiday the first week of October in China may cause customers to purchase product in the third quarter ahead of their holiday season to account for higher volume requirements in the fourth quarter.  In addition, although it is difficult to make broad generalizations, our sales tend to be lower in the first quarter of each year compared to other quarters due to the Chinese New Year.  Results for any quarter may not be indicative of the results that may be achieved for the full fiscal year and these patterns may change as a result of general customer demand or product cycles.

Key Components of Our Results of Operations and Financial Condition

Sales

We primarily generate revenue from the sales of our products. We recognize revenue when persuasive evidence of an arrangement exists, delivery has occurred, the fee is fixed or determinable, and collectability is reasonably assured. We generally recognize sales at the time of shipment to our customers, provided that all other revenue recognition criteria have been met. Although currently insignificant, we may also generate service revenue derived from agreements to provide design, engineering, and testing for a customer.

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Cost of Goods Sold

The cost of goods sold reflects the cost of producing antenna products that are shipped for our customers’ devices. This primarily includes manufacturing costs of our products payable to our third-party contract manufacturers, as well as manufacturing costs incurred at our manufacturing facility in Arizona. The cost of goods sold that we generate from services provided to customers primarily includes personnel costs.

Operating Expenses

Our operating expenses are classified into three categories: research and development, sales and marketing, and general and administrative. For each category, the largest component is personnel costs, which includes salaries, employee benefit costs, bonuses, and stock-based compensation. Operating expenses also include allocated overhead costs for depreciation of equipment, facilities and information technology. Allocated costs for facilities consist of leasehold improvements and rent. Operating expenses are generally recognized as incurred.

Research and development. Research and development expenses primarily consist of personnel and facility-related costs attributable to our engineering research and development personnel. These expenses include work related to the design, engineering and testing of antenna designs, and antenna integration, validation and testing of customer devices. These expenses include salaries, including stock-based compensation, benefits, bonuses, travel, communications, and similar costs, and depreciation and allocated operating expenses such as office supplies, premises expenses, and insurance. We may also incur expenses from consultants and for prototyping new antenna solutions. We expect research and development expense to increase in absolute dollars as we increase our research and development headcount to further strengthen and enhance our antenna design and integration capabilities and invest in the development of new solutions and markets, although our research and development expense may fluctuate as a percentage of total sales.

Sales and marketing. Sales and marketing expenses primarily consist of personnel and facility-related costs for our sales, marketing, and business development personnel, stock-based compensation and bonuses earned by our sales personnel, and commissions earned by our third-party sales representative firms. Sales and marketing expense also includes the costs of trade shows, marketing programs, promotional materials, demonstration equipment, travel, recruiting, and allocated costs for certain facilities. We expect sales and marketing expense to increase in absolute dollars as we support our growth opportunities, although our sales and marketing expense may fluctuate as a percentage of total sales.

General and administrative. General and administrative expenses primarily consist of personnel and facility-related costs for our executive, finance, and administrative personnel, including stock-based compensation, as well as legal, accounting, and other professional services fees, depreciation, and other corporate expenses. We have recently incurred, and expect to continue to incur, additional expenses as we grow our operations and operate as a public company, including higher legal, corporate insurance and accounting expenses, and the additional costs of achieving and maintaining regulatory compliance.  We expect general and administrative expense to increase in absolute dollars due to additional costs associated with growing our business, although our general and administrative expense may fluctuate as a percentage of total sales.

Other Income

Interest Income. Interest income consists of interest from our cash and cash equivalents and short-term investments.  

Interest Expense. Interest expense consists of interest on our outstanding debt.

Provision for Income Taxes

Provision for income taxes consists of federal and state income taxes. In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized.  The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible.  Management considers the scheduled reversal of deferred tax liabilities (including the impact of available carryback and carryforward periods), projected future taxable income, and tax-planning strategies in making this assessment.  It is difficult for us to project future taxable income as the timing and size of sales of our products are variable and difficult to predict.  We concluded that it is more likely than not that we will utilize our deferred tax assets other than those that are offset by reversing temporary differences.

On December 22, 2017, the Tax Cuts and Jobs Act, or the 2017 Tax Act, was enacted.  The 2017 Tax Act includes a number of changes to existing U.S. tax laws that impact our Company, most notably a reduction of the U.S. corporate income tax rate from 35%

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to 21% for tax years beginning December 31, 2018.  The 2017 Tax Act changes primarily affected our tax rate on certain deferred tax assets and deferred tax liabilities.

The 2017 Tax Act also establishes new tax laws that affect 2018 and beyond, including, but not limited to, (1) reduction of the U.S. federal corporate tax rate discussed above; (2) limitations on various entertainment and meals deductions; (2) limitations on the deductibility of interest.    

Results of Operations

The following tables set forth our operating results for the periods presented as a percentage of our total sales for those periods. The period-to-period comparison of financial results is not necessarily indicative of financial results to be achieved in future periods.

	Three Months Ended March 31,
	2018			2017
	(calculated as a percentage of associated sales)
Statement of Operations Data:
Sales		100.0	%		100.0	%
Cost of goods sold		53.4	%		53.0	%
Gross profit		46.6	%		47.0	%
Operating expenses:
Research and development		17.1	%		14.2	%
Sales and marketing		21.7	%		14.5	%
General and administrative		16.6	%		14.6	%
Total operating expenses		55.3	%		43.2	%
Income (loss) from operations		(8.7	)%		3.8	%
Other income		(0.7	)%		(0.1	)%
Income (loss) before income taxes		(8.0	)%		3.8	%
Provision for income taxes		0.3	%		0.4	%
Net income (loss)		(8.3	)%		3.4	%

Comparison of the three months ended March 31, 2018 and 2017

Sales

	Three Months Ended March 31,
	2018		2017		Increase		% Change
Sales	$	13,305,098	$	11,252,417	$	2,052,681		18.2	%

Sales increased $2.1 million for the three months ended March 31, 2018 as compared to the three months ended March 31, 2017.  For the three months ended March 31, 2018, our sales included $2.3 million in sales associated with the acquisition of Antenna Plus assets which occurred in April 2017.  Our sales associated with our organic business decreased slightly for the three months ended March 31, 2018 when compared to March 31, 2017.  The total number of devices within our organic business, decreased by 18%, or 2.3 million devices, to 10.6 million devices for the three months ended March 31, 2018 when compared to the three months ended March 31, 2017.  This decrease was primarily attributable to a decrease in set-top box sales.  The average number of antennas per device increased 22% from 3.12 antennas per device for the three months ended March 31, 2017 to 3.8 antennas per device for the three months ended March 31, 2018.  The average selling price per device for the three months ended March 31, 2018 increased 19% to $1.02 as compared to $0.86 for the three months ended March 31, 2017.  

Cost of Goods Sold

	Three Months Ended March 31,
	2018		2017		Increase		% Change
Cost of goods sold	$	7,110,927	$	5,963,959	$	1,146,968		19.2	%

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Cost of goods sold increased $1.1 million for the three months ended March 31, 2018 as compared to the three months ended March 31, 2017.  The increase was primarily due to an increase in sales associated with the acquisition of the Antenna Plus assets and sales within the retail router markets offset by a decline in set-top box sales.  For the three months ended March 31, 2018, our cost of goods sold included $0.9 million of cost of goods sold associated with the acquisition of Antenna Plus assets.  

Gross Profit

	Three Months Ended March 31,
	2018			2017			Increase		% Change
Gross profit	$	6,194,171		$	5,288,458		$	905,713		17.1	%
Gross profit (percentage of sales)		46.6	%		47.0	%				-0.4	%

Gross profit as a percentage of sales decreased 0.4% for the three months ended March 31, 2018 as compared to the three months ended March 31, 2017. The decrease in gross profit as a percentage of sales is primarily driven by a shift in the sales mix for the three months ended March 31, 2018 as compared to the three months ended March 31, 2017.  

Operating Expenses

	Three Months Ended March 31,
	2018		2017		Increase		% Change
Operating Expenses
Research and development	$	2,269,114	$	1,596,799	$	672,315		42.1	%
Sales and marketing		2,884,386		1,628,141		1,256,245		77.2	%
General and administrative		2,204,340		1,638,039		566,301		34.6	%
Total	$	7,357,840	$	4,862,979	$	2,494,861		51.3	%

Research and Development

Research and development expense increased $0.7 million for the three months ended March 31, 2018 compared to the three months ended March 31, 2017.  The increase was primarily due to $0.3 million in additional research and development expenses associated with the acquisition of Antenna Plus assets, $0.2 million increase in personnel expenses due to additional headcount and $0.1 million increase in general and administrative expenses primarily related to premises expense, office supplies and repairs and maintenance.  

Sales and Marketing

Sales and marketing expense increased $1.3 million for the three months ended March 31, 2018 compared to the three months ended March 31, 2017.  The increase was primarily due to $0.2 million in additional sales and marketing expenses associated with the acquisition of Antenna Plus assets, a $0.8 million increase in marketing expenses, a $0.2 million increase in personnel expenses due to additional headcount and a $0.1 million increase in general and administrative expenses primarily related to premises expenses and office supplies.  

General and Administrative

General and administrative expense increased $0.6 million for the three months ended March 31, 2018 compared to the three months ended March 31, 2017.  The increase was primarily due to $0.2 million additional general and administrative expenses associated with the acquisition of Antenna Plus assets, a $0.4 million increase in personnel expenses due to additional headcount.

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Other Income

	Three Months Ended March 31,
	2018			2017			$ Change			% Change
Other expense (income):
Interest income	$	(110,431	)	$	(37,201	)	$	(73,230	)		196.8	%
Interest expense		13,904			30,764			(16,860	)		-54.8	%
Total	$	(96,527	)	$	(6,437	)	$	(90,090	)		1399.6	%

Other income increased for the three months ended March 31, 2018 as compared to the three months ended March 31, 2017.  The increase was primarily due to an increase in interest income from investments and a decrease in interest expense on our outstanding loans.  

Liquidity and Capital Resources

We had cash and cash equivalents of $15.5 million and $17.5 million in short-term investments at March 31, 2018. In August 2017, we transferred a portion of our cash into an investment account.  

Before 2013, we had incurred net losses in each year since our inception. As a result, we had an accumulated deficit of $43.5 million at March 31, 2018.

Since inception, we have primarily financed our operations and capital expenditures through private sales of preferred stock, public offerings of our common stock and cash flows from our operations. We have raised an aggregate of $29.5 million in net proceeds from the issuance of our preferred stock and convertible promissory notes and $37.0 million from the sale of common stock in our public offerings.

As of March 31, 2018, we had approximately $1.0 million outstanding under a term loan pursuant to our second amended and restated loan and security agreement with Silicon Valley Bank. In addition, under our second amended and restated loan and security agreement with Silicon Valley Bank, we have a revolving line of credit with a borrowing capacity up to $10.0 million. As of March 31, 2018, there was no balance owed on the line of credit.

In August 2017, our board of directors approved a share repurchase program pursuant to which we may purchase up to $7.0 million of shares of our common stock over the twelve month period following the establishment of the program.  The repurchases under the new share repurchase program are made from time to time in the open market or in privately negotiated transactions and are funded from our working capital.  Repurchases will be made in compliance with Rule 10b-18 of the Securities Exchange Act of 1934, as amended, subject to market conditions, available liquidity, cash flow, applicable legal requirements and other factors.  All shares of common stock repurchased under our share repurchase program will be returned to the status of authorized and issued shares of common stock.  During the three months ended March 31, 2018, we repurchased 86,168 shares of common stock under the repurchase program.  These shares were repurchased at an average price per share of $9.06, for a total cost of $0.8 million.  As of March 31, 2018, we have repurchased a total of $2.0 million of our common stock.  

In December 2013, we amended our amended and restated loan and security agreement with Silicon Valley Bank to provide for a growth capital term loan of $750,000. The growth capital term loan required interest only payments through June 30, 2014 at which time it was to be repaid in 32 equal monthly installments of interest and principal. The growth capital term loan matured on February 1, 2017, at which time all unpaid principal and accrued and unpaid interest was paid. The growth capital term loan interest rate was 6.5%.

In December 2015, we further amended our amended and restated loan and security agreement with Silicon Valley Bank to include an additional term loan up to $4.0 million. The additional term loan requires 36 monthly installments of interest and principal and matures on December 1, 2018. Effective September 2017, we amended the loan and security agreement with Silicon Valley Bank to update the financial covenants.  The amended and restated loan and security agreement requires that we maintain either (1) a minimum cash balance of unrestricted cash at Silicon Valley Bank or one of its affiliates of no less than $25.0 million; or a liquidity ratio of 1.25 to 1.00 as of the last day of each month and a minimum EBITDA, measured as the last day of each fiscal quarter for the previous six-month period (for March 31, 2018 the minimum EBITDA is $750,000). The interest rate of the additional term loan is fixed at 5.0%. As of March 31, 2018, $1.0 million was outstanding on this additional term loan. We are in compliance with all of the financial covenants in the amended and restated loan and security agreement pertaining to the revolving credit line and the additional term loan as of March 31, 2018.

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On January 31, 2018, we entered into a second amended and restated loan and security agreement with Silicon Valley Bank.  The second amended and restated loan and security agreement amends and restates the terms of our amended and restated loan and security agreement with Silicon Valley Bank.  The agreement, among other things, increases the aggregate principal amount available under the revolving line of credit from $3.0 million to $10.0 million and modifies certain existing financial covenants.  Under the second amended and restated loan and security agreement, we may borrow up to $10.0 million under the line of credit, subject to a borrowing base limit of 80% of the aggregate face amount of all eligible receivables.  The agreement removed the minimum EBITDA requirement previously applicable to the line of credit and term loan and maintained the liquidity ratio financial covenant such we must maintain a ratio of cash and cash equivalents plus accounts receivable to outstanding debt under the second amended and restated loan and security agreement minus deferred revenue of 1.25 to 1.00.  We will be required to pay interest on borrowings outstanding, if any, under the revolving line of credit at a floating rate per annum equal to 1% above the Wall Street Journal prime rate (or, if unavailable, the SVB prime rate) on a monthly basis, so long as we maintain a liquidity ratio of cash and cash equivalents plus accounts receivable to outstanding debt under the second amended and restated loan and security agreement minus deferred revenue of 1.50 to 1.00.  If this liquidity ratio is not met, we will be subject to a minimum interest charge of $3,000 per month and borrowings outstanding, if any, under the revolving line of credit will accrue interest at a floating rate per annum equal to 2% above the Wall Street Journal prime rate (or if unavailable, the SVB prime rate) on a monthly basis.  The revolving line of credit matures on January 31, 2020.  

Silicon Valley Bank maintains a first security interest over our assets, excluding intellectual property, for which Silicon Valley Bank has received a negative pledge.  The second amended and restated loan and security agreement contains customary affirmative and negative covenants and events of default applicable to us and any subsidiaries.

We plan to continue to invest for long-term growth, including expanding our sales force and engineering organizations and making additional capital expenditures to further penetrate markets both in the United States and internationally, as well as expanding our research and development for new product offerings and technology solutions and increasing our sales and marketing initiatives by entering into strategic partnerships. We anticipate that these investments will continue to increase in absolute dollars. We believe that our existing cash and cash equivalents balance together with cash proceeds from operations will be sufficient to meet our working capital requirements for at least the next twelve months.

The following table presents a summary of our cash flow activity for the periods set forth below:

	Three Months Ended March 31,
	2018			2017
Net cash used in operating activities	$	(1,826,606	)	$	(3,118,662	)
Net cash provided by (used in) investing activities		3,272,586			(119,312	)
Net cash used in financing activities		(1,009,541	)		(64,131	)
Net increase (decrease) in cash and cash equivalents	$	436,439		$	(3,302,105	)

Net cash used in operating activities.  Net cash used in operating activities was $1.8 million for the three months ended March 31, 2018. This was primarily driven by our net loss of $1.1 million and $1.3 million change in operating assets and liabilities offset by net non-cash operating expenses of $0.6 million.  

Net cash provided by (used in) investing activities.  Net cash provided by investing activities was $3.3 million for the three months ended March 31, 2018.  This was primarily driven by $7.5 million in maturities of available-for-sale securities offset by $3.7 million in purchases of available-for-sale securities and $0.5 million in purchases of property and equipment.  

Net cash used in financing activities.  Net cash used in financing activities was $1.0 million for the three months ended March 31, 2018.  This was primarily driven by $0.8 million in common stock repurchases and $0.3 million in the repayment of notes payable.  

Contractual Obligations and Commitments

There were no material changes outside the ordinary course of our business during the three months ended March 31, 2018 to the information regarding our contractual obligations that was disclosed in Management’s Discussion and Analysis of Financial Condition and Results of Operations included in our Annual Report on Form 10-K for the year ended December 31, 2017.  

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Off-Balance Sheet Arrangements

We do not have any off-balance sheet arrangements (as defined by applicable regulations of the Securities and Exchange Commission) that are reasonably likely to have a current or future material effect on our financial condition, results of operations, liquidity, capital expenditures or capital resources.

Critical Accounting Policies and Significant Judgments and Estimates

Our management’s discussion and analysis of financial condition and operating results is based on our unaudited condensed financial statements, which have been prepared in accordance with GAAP. The preparation of these financial statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, as well as the reported sales and expenses during the reporting periods. These items are monitored and analyzed by us for changes in facts and circumstances, and material changes in these estimates could occur in the future. We base our estimates on historical experience and on various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Changes in estimates are reflected in reported results for the period in which they become known. Actual results may differ materially from these estimates under different assumptions or conditions.

There have been no material changes to our critical accounting policies and estimates as compared to the critical accounting policies and estimates described in our Annual Report on Form 10-K for the fiscal year ended December 31, 2017, other than as set forth in Note 2 to the unaudited condensed financial statements included in this quarterly report.

Recent Accounting Pronouncements

See Note 2, “Summary of Significant Accounting Policies” within the unaudited condensed financial statements.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Interest Rate Sensitivity

Our investment portfolio is exposed to market risk from changes in interest rates.  The fair market value of fixed rate securities may be adversely impacted by fluctuations in interest rates while income earned on floating rate securities may decline as a result of decreases in interest rates.  Under our current investment policies, we do not use interest rate derivative instruments to manage exposure to interest rate changes.  We attempt to ensure the safety and preservation of our invested principal funds by limiting default risk, market risk, and reinvestment risk.  We mitigate default risk by investing in investment grade securities.  We maintain a relatively short average maturity for our investment portfolio, and we believe a hypothetical 100 basis point adverse move in interest rates along the entire interest rate yield curve would not materially affect the fair value of our interest sensitive financial instruments.  

Our long-term debt bears interest at a fixed rate and therefore has minimal exposure to changes in interest rates. At March 31, 2018, our undrawn revolving credit facility under our second amended and restated loan and security agreement with Silicon Valley Bank bears interest at the Wall Street Journal Prime rate (4.75% as of March 31, 2018) plus 1.00%. If we draw funds from our revolving credit facility, we will be exposed to interest rate sensitivity, which is affected by changes in the Wall Street Journal prime rate.

Foreign Currency Risk

All of our sales are denominated in U.S. dollars, and therefore, our sales are not currently subject to significant foreign currency risk. To date, foreign currency transaction gains and losses have not been material to our financial statements, and we have not engaged in any foreign currency hedging transactions.

ITEM 4. CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in our periodic and current reports that we file with the SEC is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosure. In designing and evaluating the disclosure controls and procedures, management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable and not absolute assurance of achieving the desired control objectives. In reaching a reasonable level of assurance, management necessarily was required to apply its judgment in evaluating the

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cost-benefit relationship of possible controls and procedures. In addition, the design of any system of controls also is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions; over time, control may become inadequate because of changes in conditions, or the degree of compliance with policies or procedures may deteriorate. Because of the inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and not be detected.

Our management, with the participation of our principal executive officer and principal financial officer, has evaluated the effectiveness of our disclosure controls and procedures as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended, or the Exchange Act, as of the end of the period covered by this quarterly report on Form 10-Q. Based on such evaluation, our principal executive officer and principal financial officer have concluded that as of such date, our disclosure controls and procedures were effective at the reasonable assurance level.

Changes in Internal Control Over Financial Reporting

No change in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) occurred during the three months ended March 31, 2018 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

We are not currently party to any material legal proceedings.

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ITEM 1A. RISK FACTORS

A description of the risk factors associated with our business is included in the Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2017. There have been no material changes to such risk factors as previously reported, other than as set forth below.  In evaluating our business, you should carefully consider the risk factors discussed in our Annual Report on Form 10-K, as updated by our subsequent filings under the Exchange Act.  The occurrence of any of the risks discussed in such filings, or other events that we do not currently anticipate or that we currently deem immaterial, could harm our business, prospects, financial condition and results of operations.  In that case, the trading price of our common stock could decline, and you may lose all or part of your investment.

Risks Related to Our Business and Industry

Our recent management changes create uncertainties and could have a material adverse impact on our business, results of operations and financial condition.

On May 2, 2018, Charles Myers resigned as Chief Executive Officer, President and as a member of our board of directors. James K. Sims, who is our Chairman, was appointed to serve as our interim Chief Executive Officer. In addition, in April 2018, Glenn Selbo resigned as our Chief Operating Officer, and in March 2018 Anil Doradla succeeded Leo Johnson as our Chief Financial Officer, As a result of these management changes, we may experience disruption or have difficulty in maintaining or developing our business.  Further, we may not be successful in any potential search for a successor Chief Executive Officer and there can be no assurances concerning the commencement, overall timing or outcome of such a search. We face significant competition for new executives, and we may not be able to find a suitable replacement for Mr. Myers, or any other members of our senior management that we may lose in the future, and our business may be harmed as a result. Our ability to effectively manage our business and execute on our business strategy may be adversely affected by the uncertainty associated with these recent management changes.

Executive leadership transitions can be inherently difficult to manage and may cause disruption to our business. As a result of the recent changes in our management team, our existing management team has taken on substantially more responsibility, which has resulted in greater workload demands and could divert their attention away from certain key areas of our business. In addition, management transition inherently causes some loss of institutional knowledge, which can negatively affect strategy and execution, and our results of operations and financial condition could suffer as a result. The loss of services of one or more other members of senior management, or the inability to attract a qualified permanent Chief Executive Officer, could have a material adverse effect on our business, operating results and financial condition.

The loss of key personnel or an inability to attract, retain and motivate qualified personnel may harm our business.

Our success depends upon the continued service and performance of our senior management team and key technical, marketing and production personnel, including James K. Sims, who is our Chairman and also serving as our interim Chief Executive Officer following Mr. Myers’ resignation in May 2018. We may not be able to attract and retain a permanent Chief Executive Officer.  The replacement of members of our senior management team or other key employees or consultants likely would involve significant time and costs and may significantly delay or prevent the achievement of our business objectives.

Our future success also depends, in part, on our ability to continue to attract, integrate and retain highly skilled personnel. Competition for highly skilled personnel is frequently intense. Any difficulties in obtaining or retaining human resource competencies we need to achieve our business objectives may have an adverse effect on our performance.

Risks Related to Our International Operations

Our international sales and operations subject us to additional risks that can adversely affect our operating results and financial condition.

The substantial majority of our sales are to ODMs and distributors based in China. Additionally, for the year ended December 31, 2017, approximately 45% of the end-customers of our products, based on sales, are outside of North America, and we are continuing to expand our international operations as part of our growth strategy. We have limited sales personnel and sales and support operations in the United States, Asia, and Europe. Our ability to convince customers to expand their use of our antenna products is directly correlated to our direct engagement with our end-customers and our channel partners. To the extent we are unable to engage with non-U.S. customers effectively with our limited sales force capacity, we may be unable to grow sales to existing customers.

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Our international operations subject us to a variety of risks and challenges, including: increased management, travel, infrastructure and legal compliance costs associated with having multiple international operations; reliance on channel partners; increased financial accounting and reporting burdens and complexities; compliance with foreign laws and regulations; compliance with U.S. laws and regulations for foreign operations; and reduced protection for intellectual property rights in some countries and practical difficulties of enforcing rights abroad. Any of these risks could adversely affect our international operations, reduce our international sales or increase our operating costs, adversely affecting our business, operating results and financial condition and growth prospects.

In addition, we are subject to risks related to regulation of exports and reexports of products, software or technology regulated under United States laws and regulations.  In April 2018, the U.S. Department of Commerce’s Bureau of Industry and Security lifted its suspension of a denial of export privileges against Zhongxing Telecommunications Equipment Corporation of Shenzhen China, or ZTE, and a second ZTE entity. As a result of the denial order, which affected components manufactured by other entities contained in ZTE products for which our antennas were sold, ZTE halted all future orders for antenna products we have previously been shipping to ZTE.  This lifting of the suspension will also likely prevent us from shipping new products to ZTE.  Further, there can be no guarantee that the U.S. Department of Commerce will not take future regulatory action that may materially interfere with our ability to make sales, particularly in China. Even without such action by the U.S. Department of Commerce, we would be prohibited from exporting our products to any foreign recipient if we have knowledge that a violation of U.S. export regulations has occurred, is about to occur, or is intended to occur in connection with the item. The loss or temporary loss of such customers as a result of future regulatory limitation could have a material adverse effect on our business, financial condition and results of operations and affect our international sales strategy in China and elsewhere around the world.

We are subject to governmental export and import controls that could impair our ability to compete in international markets due to licensing requirements and subject us to liability if we are not in compliance with applicable laws.  

Our products are subject to export control and import laws and regulations, including the U.S. Export Administration Regulations, U.S. Customs regulations and various economic and trade sanctions regulations administered by the U.S. Treasury Department’s Office of Foreign Assets Control. Exports of our products must be made in compliance with these laws and regulations. If we violate these laws and regulations, we and certain of our employees could be subject to substantial civil or criminal penalties, including the possible loss of export or import privileges, fines, which may be imposed on us and responsible employees or managers, and, in extreme cases, the incarceration of responsible employees or managers. In addition, if our channel partners, agents or consultants fail to obtain appropriate import, export or re-export licenses or authorizations, we may also be adversely affected through reputational harm and penalties. Obtaining the necessary authorizations, including any required license, for a particular sale may be time-consuming, is not guaranteed and may result in the delay or loss of sales opportunities. Changes in our products or changes in applicable export or import laws and regulations may also create delays in the introduction and sale of our products in international markets, prevent our end-customers with international operations from deploying our products or, in some cases, prevent the export or import of our products to certain countries, governments or persons altogether. For example, as a result of the U.S. Department of Commerce’s Bureau of Industry and Security lifting its suspension of a denial of export privileges against ZTE in April 2018, ZTE halted all future orders for antenna products we have previously been shipping to ZTE.  This lifting of the suspension will also likely prevent us from shipping new products to ZTE. Any change in export or import laws and regulations, shift in the enforcement or scope of existing laws and regulations, or change in the countries, governments, persons or technologies targeted by such laws and regulations, could also result in decreased use of our products, or in our decreased ability to export or sell our products to existing or potential end-customers with international operations. Any decreased use of our products or limitation on our ability to export or sell our products would likely adversely affect our business, financial condition and operating results.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

Unregistered Sales of Equity Securities

There were no unregistered sales of equity securities during the period covered by this report.

Issuer Purchases of Equity Securities

The following table contains information relating to the repurchase of our common stock made by us in the three months ended March 31, 2018:

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Fiscal Period	Total Number of Shares Repurchased		Average Price Paid Per Share		Total Number of Shares Purchased As Part of a Publicly Announced Program		Approximate Dollar Amount of Shares That May Yet be Purchased Under the Program (1)
January 1, 2018 to January 31, 2018		—	$	—		—	$	—
February 1, 2018 to February 28, 2018		21,755		9.02		156,755		5,547,173
March 1, 2018 to March 31, 2018		64,413		9.07		221,168		4,962,987
Total during the three months ended March 31, 2018		86,168	$	9.06		221,168	$	4,962,987

(1) On August 14, 2017, our board of directors authorized the repurchase over the following twelve months of issued and outstanding shares of our common stock having an aggregate value of up to $7.0 million pursuant to a repurchase program.  As of March 31, 2018, we have repurchased shares of common stock having an aggregate value of $2.0 million.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4. MINE SAFETY DISCLOSURES

None.

ITEM 5. OTHER INFORMATION

On May 2, 2018, our board of directors, or the Board, appointed our current Chairman, James K. Sims, age 71, as interim Chief Executive Officer following the resignation of Charles Myers from that position.  

On May 8, 2018, the Board approved the compensation arrangements for Mr. Sims in his role as interim Chief Executive Officer.  In consideration of his service as interim Chief Executive Officer, Mr. Sims will receive a monthly retainer of $33,333, which equates to an annual retainer of $400,000.  On May 8, 2018, Mr. Sims was also granted stock options to purchase 175,000 shares of our common stock, which stock options will vest in equal quarterly installments over the two years following his commencement of service as interim Chief Executive Officer, subject to his continued service in that role or as a member of the Board on each vesting date.  The stock options will also vest in full upon a change in control of the Company.

During his service as interim Chief Executive Officer, Mr. Sims will not be entitled to any additional fees or other compensation for serving as Chairman of the Board or as a member of the Board, including any fees or equity grants in accordance with our policy for non-employee members of the Board, although the equity awards previously granted to him in connection with his service as a member of the Board will continue to vest based on his service as interim Chief Executive Officer.  Following his service as interim Chief Executive Officer, Mr. Sims will again be eligible to receive fees and equity grants in accordance with our policy for non-employee members of the Board.

The compensation payable to Mr. Sims and described above is solely for his services as interim Chief Executive Officer and not for his service as a non-employee member of the Board.  Mr. Sims was not present for the deliberations or decision by the Board when it approved the foregoing compensation arrangements.

Effective as of May 8, 2018, pursuant to our amended and restated bylaws, the Board reduced the size of the Board from seven to five directors.

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INDEX TO EXHIBITS

Exhibit Number	Description
3.1(1)	Amended and Restated Certificate of Incorporation
3.2(1)	Amended and Restated Bylaws
4.1(2)	Specimen stock certificate evidencing the shares of common stock
4.2(3)	Fourth Amended and Restated Investors’ Rights Agreement, dated May 7, 2008
4.3(2)	Form of Warrant issued to Northland Securities, Inc. in connection with the initial public offering of our common stock.
31.1	Certification of Principal Executive Officer pursuant to Rules 13a-14 and 15d-14 promulgated pursuant to the Securities Exchange Act of 1934, as amended
31.2	Certification of Principal Financial Officer pursuant to Rules 13a-14 and 15d-14 promulgated pursuant to the Securities Exchange Act of 1934, as amended
32.1*	Certification of Principal Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2*	Certification of Principal Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

(1) Incorporated by reference to the Registrant’s Current Report on Form 8-K, filed with the SEC on August 17, 2016.

(2) Incorporated by reference to Amendment No. 2 to the Registrant’s Registration Statement on Form S-1 (Registration No. 333- 212542), filed with the SEC on July 29, 2016.

(3) Incorporated by reference to Amendment No. 1 to the Registrant’s Registration Statement on Form S-1 (Registration No. 333- 212542), filed with the SEC on July 15, 2016.

* These certifications are being furnished solely to accompany this quarterly report pursuant to 18 U.S.C. Section 1350, and are not being filed for purposes of Section 18 of the Securities Exchange Act of 1934 and are not to be incorporated by reference into any filing of the Registrant, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

32

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	AIRGAIN, INC.
Date: May 10, 2018	/s/ James K. Sims
	James K. Sims Chairman of the Board and Interim Chief Executive Officer (principal executive officer)
Date: May 10, 2018	/s/ Anil Doradla
	Anil Doradla Chief Financial Officer and Secretary (principal financial and accounting officer)

33

EX-31.1

Exhibit 31.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, James K. Sims, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Airgain, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. [paragraph omitted in accordance with Exchange Act Rule 13a-14(a)];

c. evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 10, 2018	/s/ James K. Sims
	James K. Sims
	Interim Chief Executive Officer
	(principal executive officer)

EX-31.2

Exhibit 31.2

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Anil Doradla, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Airgain, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. [paragraph omitted in accordance with Exchange Act Rule 13a-14(a)];

c. evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 10, 2018	/s/ Anil Doradla
	Anil Doradla
	Chief Financial Officer and Secretary
	(principal financial and accounting officer)

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the quarterly report of Airgain, Inc. (the “Company”) on Form 10-Q for the quarter ended March 31, 2018, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, James K. Sims, Interim Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: May 10, 2018	/s/ James K. Sims
	James K. Sims
	Interim Chief Executive Officer

The foregoing certification is being furnished solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part of the Report or as a separate disclosure document.

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the quarterly report of Airgain, Inc. (the “Company”) on Form 10-Q for the quarter ended March 31, 2018, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Anil Doradla, Chief Financial Officer and Secretary of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: May 10, 2018	/s/ Anil Doradla
	Anil Doradla
	Chief Financial Officer and Secretary

The foregoing certification is being furnished solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part of the Report or as a separate disclosure document.

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	May 08, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Trading Symbol	AIRG
Entity Registrant Name	AIRGAIN INC
Entity Central Index Key	0001272842
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		9,669,962

XML

Unaudited Condensed Balance Sheets - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 15,462,507	$ 15,026,068
Short term investments	17,515,408	21,287,064
Trade accounts receivable	8,180,047	8,418,132
Inventory	518,688	741,557
Prepaid expenses and other current assets	1,182,034	609,786
Total current assets	42,858,684	46,082,607
Property and equipment, net	1,418,657	1,036,860
Goodwill	3,700,447	3,700,447
Customer relationships, net	3,955,168	4,075,918
Intangible assets, net	1,003,737	1,052,333
Other assets	288,132	349,743
Total assets	53,224,825	56,297,908
Current liabilities:
Accounts payable	4,215,806	3,969,083
Accrued bonus	718,924	2,224,517
Accrued liabilities	1,081,278	1,121,833
Deferred purchase price	1,000,000	1,000,000
Current portion of long-term notes payable	1,000,000	1,333,333
Current portion of deferred rent obligation under operating lease	81,332	81,332
Total current liabilities	8,097,340	9,730,098
Deferred tax liability	10,563	7,971
Deferred rent obligation under operating lease	319,182	334,860
Total liabilities	8,427,085	10,072,929
Stockholders’ equity:
Common shares, par value $0.0001, 200,000,000 shares authorized at March 31, 2018 and December 31, 2017; 9,669,962 and 9,616,992 shares issued at March 31, 2018 and December 31, 2017, respectively; 9,448,794 and 9,481,992 shares outstanding at March 31, 2018 and December 31, 2017, respectively	966	961
Additional paid in capital	90,370,362	89,907,766
Treasury stock, at cost: 221,168 shares and 135,000 shares at March 31, 2018 and December 31, 2017, respectively	(2,037,013)	(1,257,100)
Accumulated other comprehensive loss	(21,043)	(16,907)
Accumulated deficit	(43,515,532)	(42,409,741)
Total stockholders’ equity	44,797,740	46,224,979
Commitments and contingencies (note 14)
Total liabilities and stockholders’ equity	$ 53,224,825	$ 56,297,908

XML

Unaudited Condensed Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2018	Dec. 31, 2017
Statement Of Financial Position [Abstract]
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	9,669,962	9,616,992
Common stock, shares outstanding	9,448,794	9,481,992
Treasury stock, shares at cost	221,168	135,000

XML

Unaudited Condensed Statements of Operations - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Sales	$ 13,305,098	$ 11,252,417
Cost of goods sold	7,110,927	5,963,959
Gross profit	6,194,171	5,288,458
Operating expenses:
Research and development	2,269,114	1,596,799
Sales and marketing	2,884,386	1,628,141
General and administrative	2,204,340	1,638,039
Total operating expenses	7,357,840	4,862,979
Income (loss) from operations	(1,163,669)	425,479
Other expense (income):
Interest income	(110,431)	(37,201)
Interest expense	13,904	30,764
Total other income	(96,527)	(6,437)
Income (loss) before income taxes	(1,067,142)	431,916
Provision for income taxes	38,649	46,826
Net income (loss)	$ (1,105,791)	$ 385,090
Net income (loss) per share:
Basic	$ (0.12)	$ 0.04
Diluted	$ (0.12)	$ 0.04
Weighted average shares used in calculating income (loss) per share:
Basic	9,479,742	9,359,562
Diluted	9,479,742	10,201,606

XML

Unaudited Condensed Statement of Comprehensive Income (Loss) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ (1,105,791)	$ 385,090
Unrealized loss on available-for-sale securities	(4,136)
Total comprehensive income (loss)	$ (1,109,927)	$ 385,090

XML

Unaudited Condensed Statement of Stockholders' Equity - 3 months ended Mar. 31, 2018 - USD ($)	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Other Comprehensive Loss	Accumulated Deficit
Beginning balance at Dec. 31, 2017	$ 46,224,979	$ 961	$ 89,907,766	$ (1,257,100)	$ (16,907)	$ (42,409,741)
Beginning balance, shares at Dec. 31, 2017		9,481,992
Stock-based compensation	358,896		358,896
Exercise of stock options	$ 103,705	$ 5	103,700
Exercise of stock options, shares	52,970	52,970
Common stock repurchases	$ (779,913)			(779,913)
Common stock repurchases, shares		(86,168)
Unrealized loss on available-for-sale securities	(4,136)				(4,136)
Net loss	(1,105,791)					(1,105,791)
Ending balance at Mar. 31, 2018	$ 44,797,740	$ 966	$ 90,370,362	$ (2,037,013)	$ (21,043)	$ (43,515,532)
Ending balance, shares at Mar. 31, 2018		9,448,794

XML

Unaudited Condensed Statements of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income (loss)	$ (1,105,791)	$ 385,090
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation	121,417	115,447
Amortization	169,346	97,346
Amortization of discounts on investments, net	(8,280)
Stock-based compensation	358,896	73,475
Deferred tax liability	2,592	9,834
Changes in operating assets and liabilities:
Trade accounts receivable	238,085	(2,357,941)
Inventory	222,869	38,494
Prepaid expenses and other assets	(510,637)	(75,203)
Accounts payable	246,723	42,917
Accrued bonus	(1,505,593)	(1,149,076)
Accrued liabilities	(40,555)	(268,306)
Deferred obligation under operating lease	(15,678)	(30,739)
Net cash used in operating activities	(1,826,606)	(3,118,662)
Cash flows from investing activities:
Purchases of available-for-sale securities	(3,724,200)
Maturities of available-for-sale securities	7,500,000
Purchases of property and equipment	(503,214)	(119,312)
Net cash provided by (used in) investing activities	3,272,586	(119,312)
Cash flows from financing activities:
Repayment of notes payable	(333,333)	(388,563)
Reversal of costs related to initial public offering		781
Common stock repurchases	(779,913)
Proceeds from exercise of stock options	103,705	323,651
Net cash used in financing activities	(1,009,541)	(64,131)
Net increase (decrease) in cash and cash equivalents	436,439	(3,302,105)
Cash and cash equivalents, beginning of period	15,026,068	45,161,403
Cash and cash equivalents, end of period	15,462,507	41,859,298
Supplemental disclosure of cash flow information
Interest paid	15,340	$ 32,508
Taxes paid	$ 7,409

XML

Basis of Presentation

3 Months Ended

Mar. 31, 2018

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Basis of Presentation

Note 1. Basis of Presentation

Business Description

Airgain, Inc. (the Company) was incorporated in the State of California on March 20, 1995 and reincorporated in the State of Delaware on August 15, 2016. The Company is a leading provider of advanced antenna technologies used to enable high performance wireless networking across a broad range of devices and markets, including connected home, enterprise, automotive and Internet of Things (IoT). The Company designs, develops, and engineers its antenna products for original equipment and design manufacturers worldwide.  The Company’s headquarters is in San Diego, California with office space and research facilities in the United States, United Kingdom and China.  

Basis of Presentation

The accompanying unaudited condensed financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) and applicable rules and regulations of the Securities and Exchange Commission (SEC) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Interim financial results are not necessarily indicative of results anticipated for the full year. As such, the information included in this quarterly report on Form 10-Q should be read in conjunction with the financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2017, from which the balance sheet information herein was derived.  

The condensed balance sheet as of December 31, 2017 included herein was derived from the audited financial statements as of that date but does not include all disclosures including notes required by GAAP.

The condensed statements of operations for the three months ended March 31, 2018 and March 31, 2017, and the balance sheet data as of March 31, 2018 have been prepared on the same basis as the audited financial statements.

In the opinion of management, the accompanying unaudited condensed financial statements reflect all adjustments, consisting of normal and recurring adjustments, necessary for a fair presentation of results of the Company’s operations and financial position for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full year ending December 31, 2018 or for any future period.   

Segment Information

The Company’s operations are located primarily in the United States, and most of its assets are located in San Diego, California and Scottsdale, Arizona. The Company operates in one segment related to the sale of antenna products. The Company’s chief operating decision-maker is its chief executive officer, who reviews operating results on an aggregate basis and manages the Company’s opertions as a single operating segment.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include valuation of intangible assets and goodwill.

Fair Value Measurements

The carrying values of the Company’s financial instruments, including cash and cash equivalents, trade accounts receivable, accounts payable, accrued liabilities and debt approximate their fair values due to the short maturity of these instruments.

Fair value measurements are market-based measurements, not entity-specific measurements. Therefore, fair value measurements are determined based on the assumptions that market participants would use in pricing the asset or liability. The Company follows a three-level hierarchy to prioritize the inputs used in the valuation techniques to derive fair values. The basis for fair value measurements for each level within the hierarchy is described below:

• Level 1: Quoted prices in active markets for identical assets or liabilities.

• Level 2: Quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs are observable in active markets.

• Level 3: Valuations derived from valuation techniques in which one or more significant inputs are unobservable in active markets.

The Company’s accounting policy is to recognize transfers between levels of the fair value hierarchy on the date of the event or change in circumstances that caused the transfer. There were no transfers into or out of Level 1, Level 2, or Level 3 for the three months ended March 31, 2018 and for the year ended December 31, 2017.

Cash Equivalents and Short-Term Investments

Cash equivalents are comprised of short-term, highly liquid investments with maturities of 90 days or less at the date of purchase.  

Short-term investments consist predominantly of commercial paper, corporate debt securities, U.S. Treasury securities and asset backed securities.  The Company classifies short-term investments based on the facts and circumstances surrounding the investments at the time of purchase and evaluates such classification as of each balance sheet date.  All short-term investments are classified as available-for-sale securities as of March 31, 2018 and are recorded at estimated fair value.  Unrealized gains and losses for available-for-sale securities are included in accumulated other comprehensive income (loss), a component of stockholders’ equity.  Realized gains and losses are included in other income, in the unaudited condensed statement of operations.  The Company evaluates its investments to determine whether those with unrealized loss positions are other than temporarily impaired.  Impairments are considered to be other than temporary if they are related to deterioration in credit risk or if it is likely that the Company will sell the securities before recovery of their cost basis.  

Inventory

The 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.  With the acquisition of substantially all of the assets of Antenna Plus, LLC (“Antenna Plus”), in April 2017, the Company began manufacting products at its Scottsdale, Arizona and Shullsburg, Wisconsin locations.  In July 2017, the Company relocated all of its product manufacturing produced in Shullsburg, Wisconsin to the Scottsadale, Arizona facility.  See Note 6 for additional information relating to the Company’s acquisition of the Antenna Plus assets.  

Inventory is stated at the lower of cost or net realizable value.  For items manufactured by the Company, cost is determined using the weighted average cost method.  For items manufactured by third parties, cost is determined using the first-in, first-out method (FIFO).  Any adjustments to reduce the cost of inventories to their net realizable value are recognized in earnings in the current period.  As of March 31, 2018, the Company’s inventories consist primarily of raw materials.  Provisions for excess and obsolete inventories are estimated based on product life cycles, quality issues, and historical experience.  As of March 31, 2018, there is no provision for excess and obsolete inventories.    

Accumulated Other Comprehensive Income (Loss)

Comprehensive income (loss) is comprised of net income (loss) and other comprehensive income (loss).  Accumulated other comprehensive income (loss) on the unaudited condensed balance sheet at March 31, 2018 includes unrealized gains and losses on the Company’s available-for-sale securities.  

XML

Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Note 2. Summary of Significant Accounting Policies

During the three months ended March 31, 2018, there have been no material changes to the Company’s significant accounting policies as described in the Annual Report on Form 10-K for the fiscal year ended December 31, 2017.  

Recent Accounting Pronouncements

In February 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-02, Leases (Topic 842), which requires lessees to recognize most leases on their balance sheets as lease liabilities with corresponding right-of-use assets. For public entities, ASU 2016-02 is effective for annual periods beginning after December 15, 2018, including interim periods within those fiscal years. For nonpublic entities, ASU 2016-02 is effective for fiscal year beginning after December 15, 2019 and interim periods within fiscal years beginning after December 15, 2020.  The Company is evaluating the effect that ASU 2016-02 will have on its financial statements and related disclosures.  The Company has not yet selected a transition method, nor has it determined the effect of the standard on its ongoing financial reporting.  

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The standard will replace most existing revenue recognition guidance in GAAP when it becomes effective. For public entities, ASU 2014-09 is effective for reporting periods beginning after December 15, 2017, including interim periods within that reporting period. For nonpublic entities, ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2018 and interim periods within those periods. The standard permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the effect that ASU 2014-09 will have on its financial statements and related disclosures. The Company has not yet selected a transition method nor has it determined the effect of the standard on the Company’s ongoing financial reporting.

XML

Net Income (Loss) Per Share

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Net Income (Loss) Per Share

Note 3. Net Income (Loss) Per Share

Basic net income (loss) per share is calculated by dividing net income (loss) by the weighted average shares of common stock outstanding for the period. Diluted net income (loss) per share is calculated by dividing net income (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. The Company calculates diluted earnings 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 (loss) per share:

	Three Months Ended March 31,
	2018			2017
Numerator:
Net income (loss)	$	(1,105,791	)	$	385,090
Denominator:
Weighted average common shares outstanding - basic		9,479,742			9,359,562
Plus dilutive effect of potential common shares		—			842,044
Weighted average common shares outstanding - diluted		9,479,742			10,201,606
Net income (loss) per share:
Basic	$	(0.12	)	$	0.04
Diluted	$	(0.12	)	$	0.04

Diluted weighted average common shares outstanding for the three months ended March 31, 2017 includes 10,532 warrants and 831,512 options outstanding.

Potentially dilutive securities not included in the calculation of diluted net income (loss) per share because to do so would be anti-dilutive are as follows:

	Three Months Ended March 31,
	2018		2017
Employee stock options		1,159,062		6,581
Warrants outstanding		51,003		—
Total		1,210,065		6,581

XML

Cash, Cash Equivalents and Short-Term Investments

3 Months Ended

Mar. 31, 2018

Cash And Cash Equivalents [Abstract]

Cash, Cash Equivalents and Short-Term Investments

Note 4. Cash, Cash Equivalents and Short-Term Investments

The following table shows the Company’s cash and cash equivalents and short-term investments by significant investment category as of March 31, 2018:

	March 31, 2018
	Amortized Cost		Gross Unrealized Losses			Estimated Fair Value		Cash and Cash Equivalents		Short-Term Investments
Cash	$	3,692,893	$	—		$	3,692,893	$	3,692,893	$	—
Level 1 (1):
Money market funds		5,031,300		—			5,031,300		5,031,300		—
U.S. treasury securities		2,492,664		(5,660	)		2,487,004		—		2,487,004
Subtotal		7,523,964		(5,660	)		7,518,304		5,031,300		2,487,004
Level 2 (2):
Commercial paper		10,460,305		—			10,460,305		2,987,944		7,472,361
Corporate debt obligations		4,551,681		(9,610	)		4,542,071		—		4,542,071
Repurchase agreements		3,000,450		—			3,000,450		3,000,450		—
Asset-backed securities		3,769,665		(5,773	)		3,763,892		749,920		3,013,972
Subtotal		21,782,101		(15,383	)		21,766,718		6,738,314		15,028,404
Total	$	32,998,958	$	(21,043	)	$	32,977,915	$	15,462,507	$	17,515,408

	December 31, 2017
	Amortized Cost		Gross Unrealized Losses			Estimated Fair Value		Cash and Cash Equivalents		Short-Term Investments
Cash	$	3,040,696	$	—		$	3,040,696	$	3,040,696	$	—
Level 1 (1):
Money market funds		8,234,751		—			8,234,751		8,234,751		—
U.S. treasury securities		2,490,799		(5,540	)		2,485,259		—		2,485,259
Subtotal		10,725,550		(5,540	)		10,720,010		8,234,751		2,485,259
Level 2 (2):
Commercial paper		9,716,093		—			9,716,093		—		9,716,093
Corporate debt obligations		6,829,191		(9,414	)		6,819,777		—		6,819,777
Repurchase agreements		3,000,233		—			3,000,233		3,000,233		—
Asset-backed securities		3,018,276		(1,953	)		3,016,323		750,388		2,265,935
Subtotal		22,563,793		(11,367	)		22,552,426		3,750,621		18,801,805
Total	$	36,330,039	$	(16,907	)	$	36,313,132	$	15,026,068	$	21,287,064

(1) Level 1 fair value estimates are based on quoted prices in active markets for identical assets or liabilities.

(2) Level 2 fair value estimates are based on observable inputs other than quoted prices in active markets for identical assets and liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.  

The Company’s investments were primarily valued based upon one or more valuations reported by its investment accounting and reporting service provider.  The investment service provider values the securities using a hierarchical security pricing model that relies primarily on valuations provided by a third-party pricing vendor.  Such valuations may be based on trade prices in active markets for identical assets or liabilities (Level 1 inputs) or valuation models using inputs that are observable either directly or indirectly (Level 2 inputs), such as quoted prices for similar assets or liabilities, yield curve, volatility factors, credit spreads, default rates, loss severity, current market and contractual prices for underlying instruments or debt, broker and dealer quotes, as well as other relevant economic measures.  The Company performs certain procedures to corroborate the fair value of its holdings, including comparing valuations obtained from its investment service provider with other pricing sources to validate the reasonableness of the valuations.    

The Company typically invests in highly-rated securities, and its investment policy limits the amount of credit exposure to any one issuer.  The policy requires investments in fixed income instruments denominated and payable in U.S. dollars only and requires investments to be investment grade, with a primary objective of minimizing the potential risk of principal loss.  

The following table presents the Company’s short-term investments with unrealized losses by investment category and length of time that individual securities have been in a continuous unrealized loss position as of March 31, 2018:

	Less Than 12 Months
Description of Securities	Estimated Fair Value		Unrealized Losses
March 31, 2018
U.S. treasury securities	$	2,487,004	$	(5,660	)
Corporate debt obligations		4,542,071		(9,610	)
Asset-backed securities		3,013,972		(5,773	)
Total	$	10,043,047	$	(21,043	)

The Company considers the declines in market value of its short-term investments to be temporary in nature.  Fair values were determined for each individual security in the investment portfolio.  When evaluating an investment for other-than-temporary impairment, the Company reviews factors such as length of time and extent to which fair value has been below its cost basis, the financial condition of the issuer and any changes thereto, changes in market interest rates and the Company’s intent to sell, or whether it is more likely than not it will be required to sell the investment before recovery of the investment’s cost basis.  As of March 31, 2018, the Company does not consider any of its investments to be other-than temporarily impaired.

Contractual maturities of short-term investments as of March 31, 2018 are as follows:

	Estimated Fair Value
Due within one year	$	17,515,408
Total	$	17,515,408

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Property and Equipment

3 Months Ended

Mar. 31, 2018

Property Plant And Equipment [Abstract]

Property and Equipment

Note 5. 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 to five years for all other property and equipment.  Property and equipment consist of the following:

	March 31,			December 31,
	2018			2017
Lab equipment	$	2,228,032		$	1,914,911
Computer equipment		169,366			169,366
Computer software		306,767			299,227
Furniture and fixtures		202,218			202,218
Tenant improvements		894,756			763,898
Other office equipment		115,520			63,825
		3,916,659			3,413,445
Less accumulated depreciation		(2,498,002	)		(2,376,585	)
	$	1,418,657		$	1,036,860

Depreciation expense was $121,417 and $115,447 for the three months ended March 31, 2018 and 2017, respectively.

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Acquisitions

3 Months Ended

Mar. 31, 2018

Business Combinations [Abstract]

Acquisition

Note 6. Acquisitions

Antenna Plus

On April 27, 2017, the Company completed the acquisition of substantially all of the assets of Antenna Plus.  Antenna Plus is a supplier of antenna-based solutions for mobile and automotive fleet applications for government, public safety, and Industrial Internet of Things (IOT) markets.  The acquisition provides leverage for the Company’s existing products into several new markets, including the fast-growing automotive fleet and industrial IOT space.

The transaction was completed pursuant to an Asset Purchase Agreement with MCA Financial Group, Ltd., acting as the court-appointed receiver for Antenna Plus.  Upon the closing of the transaction, the Company paid to Antenna Plus total consideration of approximately $6.3 million in cash, net of post-closing working capital adjustments.  In addition, the Company assumed certain contracts and other liabilities of Antenna Plus, as expressly set forth in the Asset Purchase Agreement.

The following table shows the allocation of the purchase price for Antenna Plus to the acquired identifiable assets, liabilities assumed and goodwill:

Consideration:
Cash	$	6,383,500
Working capital adjustments		(34,770	)
Fair value of total consideration transferred	$	6,348,730
Recognized amounts of identifiable assets acquired and liabilities assumed:
Accounts receivable	$	584,390
Inventory		432,770
Fixed assets		402,958
Intangible assets		2,600,000
Current liabilities		(121,879	)
Total identifiable net assets acquired		3,898,239
Goodwill		2,450,491
Total	$	6,348,730

Goodwill was primarily attributable to the anticipated synergies and economies of scale expected from the operations of the combined business.  The synergies include certain cost savings, operating efficiencies, and other strategic benefits projected to be achieved as a result of the acquisition.  Goodwill is expected to be deductible for tax purposes.

Revenue associated with the acquired Antenna Plus assets was $2.3 million for the three months ended March 31, 2018.  Cost of goods sold associated with the acquired Antenna Plus assets was $0.9 million for the three months ended March 31, 2018.  Net income associated with the acquired Antenna Plus assets was net income of $0.7 million for the three months ended March 31, 2018.  

Unaudited Pro Forma Information

The following unaudited pro forma financial information presents combined results of operations for each of the periods presented, as if Antenna Plus had been acquired as of the beginning of the fiscal year 2017.  The pro forma information includes adjustments to amortization and depreciation for intangible assets and property, plant and equipment acquired.  The pro forma data are for informational purposes only and are not necessarily indicative of the consolidated results of operations of the combined business had the acquisition actually occurred at the beginning of fiscal year 2017 or of the results of future operations of the combined business.  Consequently, actual results will differ from the unaudited pro forma information presented below:

	Three Months Ended March 31,
	2018			2017
Pro forma sales	$	13,305,098		$	13,026,993
Pro forma income from operations	$	(1,163,669	)	$	927,532
Pro forma net income	$	(1,105,791	)	$	887,143

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Intangible Assets

3 Months Ended

Mar. 31, 2018

Goodwill And Intangible Assets Disclosure [Abstract]

Intangible Assets

Note 7. Intangible Assets

The following is a summary of the Company’s acquired intangible assets:

	March 31, 2018
	Weighted Average Amortization Period (years)		Gross Carrying Amount		Accumulated Amortization		Intangibles, Net
Customer relationships		10	$	4,830,000	$	874,832	$	3,955,168
Developed technologies		9		1,080,000		175,489		904,511
Tradename		3		120,000		36,667		83,333
Non-compete agreement		3		67,000		51,107		15,893
Total intangible assets, net		10	$	6,097,000	$	1,138,095	$	4,958,905

	December 31, 2017
	Weighted Average Amortization Period (years)		Gross Carrying Amount		Accumulated Amortization		Intangibles, Net
Customer relationships		10	$	4,830,000	$	754,082	$	4,075,918
Developed technologies		9		1,080,000		142,477		937,523
Tradename		3		120,000		26,667		93,333
Non-compete agreement		3		67,000		45,523		21,477
Total intangible assets, net		10	$	6,097,000	$	968,749	$	5,128,251

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 result of acquisitions, divestitures, asset impairments, among other factors. Amortization expense was $169,346 and $97,346 for the three months ended March 31, 2018 and 2017, respectively.

	Estimated Future Amortization
2018 (remaining nine months)	$	507,182
2019		655,052
2020		627,667
2021		598,420
2022		563,000
Thereafter		2,007,584
Total	$	4,958,905

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Long-term Notes Payable (including current portion) and Line of Credit

3 Months Ended

Mar. 31, 2018

Long Term Debt [Abstract]

Long-term Notes Payable (including current portion) and Line of Credit

Note 8. Long-term Notes Payable (including current portion) and Line of Credit

In December 2013, the Company further amended its revolving line of credit under the amended and restated loan and security agreement with Silicon Valley Bank to include a growth capital term loan of up to $750,000. The growth capital term loan required interest only payments through June 30, 2014 at which point it was to be repaid in 32 equal monthly installments of interest and principal. The growth capital term loan matured on February 1, 2017, at which time $55,230 in principal and accrued interest was paid. The growth capital term loan interest rate was 6.5%.  As of March 31, 2018 and December 31, 2017, there was no balance owed under this loan.

In December 2015, the Company further amended its amended and restated 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. Effective September 2017, the Company further amended its amended and restated loan and security agreement with Silicon Valley Bank to update the financial covenants.  The amended and restated loan and security agreement requires the Company to maintain, at all times, measured as of the last day of each month (unless otherwise specified) either (i) a minimum cash balance of unrestricted cash at Silicon Valley Bank or its affiliate of not less than $25.0 million dollars or (ii) a liquidity ratio of 1.25 to 1.00 and a minimum EBITDA measured as of the last day of each fiscal quarter for the previous six month period. The interest rate is fixed at 5.0%.  

In January 2018, the Company entered into a second amended and restated loan and security agreement (the Amended Loan Agreement) with Silicon Valley Bank.  The Amended Loan Agreement modified the amended and restated loan and security agreement to, among other things, increase the aggregate principal amount available under the revolving line of credit from $3.0 million to $10.0 million and modify certain existing financial covenants.  There was no balance owed on the line of credit as of March 31, 2018 and December 31, 2017

Under the Amended Loan Agreement, the Company may borrow up to $10.0 million under the line of credit, subject to a borrowing base limit of 80% of the aggregate face amount of all eligible receivables.  The Amended Loan Agreement removed the minimum EBITDA requirement previously applicable to the line of credit and term loan and maintained the liquidity ratio financial covenant such that the Company must maintain a ratio of cash and cash equivalents plus accounts receivable outstanding debt under the Amended Loan Agreement minus deferred revenue of 1.25 to 1.00.  

The Company will be required to pay interest on borrowings outstanding, if any, under the revolving line of credit at a floating rate per annum equal to 1% above the Wall Street Journal prime rate (4.75% as of March 31, 2018) (or, if unavailable, the Silicon Valley Bank prime rate) on a monthly basis, so long as the Company maintains a liquidity ratio of cash and cash equivalents plus accounts receivable to outstanding debt under the Amended Loan Agreement minus deferred revenue of 1.50 to 1.00.  If this liquidity ratio is not met, the Company will be subject to a minimum interest charge of $3,000 per month and borrowings outstanding, if any, under the revolving line of credit will accrue interest at a floating rate per annum equal to 2% above the Wall Street Journal prime rate (4.75% as of March 31, 2018) (or, if unavailable the Silicon Valley Bank prime rate) on a monthly basis.  Prior to the amendment in January 2018, the revolving line of credit bore interest rate at the U.S. prime rate plus 1.25%.  The revolving line of credit matures on January 31, 2020.    

Borrowings outstanding under the term loan under the amended and restated loan and security agreement will continue to be repaid in equal monthly installments of interest and principal and matures on December 1, 2018.

Silicon Valley Bank maintains a first security interest over the Company’s assets, excluding intellectual property, for which Silicon Valley Bank has received a negative pledge.  The Amended Loan Agreement contains customary affirmative and negative covenants and events of default applicable to the Company and any of its subsidiaries.    

The remaining principal payments on the $4.0 million term loan subsequent to March 31, 2018 are as follows:

Year ending:
2018 (remaining nine months)	$	1,000,000
	$	1,000,000

The Company was in compliance with its financial covenants in the Amended Loan Agreement as of March 31, 2018.

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Treasury Stock

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Treasury Stock

Note 9. Treasury Stock

In August 2017, the Company’s Board of Directors approved a share repurchase program pursuant to which the Company may purchase up to $7.0 million of shares of its common stock over the twelve month period following the establishment of the program.  The repurchases under the new share repurchase program are made from time to time in the open market or in privately negotiated transactions and are funded from the Company’s working capital. Repurchases will be made in compliance with Rule 10b-18 of the Securities Exchange Act of 1934, as amended, subject to market conditions, available liquidity, cash flow, applicable legal requirements and other factors.  All shares of common stock repurchased under the Company’s new share repurchase program will be returned to the status of authorized but unissued shares of common stock.  

During the three months ended March 31, 2018, the Company repurchased 86,168 shares of common stock under the repurchase program.  These shares were repurchased at an average price per share of $9.06 per share, for a total cost of $779,913.  As of March 31, 2018, the Company has repurchased a total of $2.0 million in common stock.     

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Income Taxes

3 Months Ended

Mar. 31, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Note 10. Income Taxes

The Company’s effective income tax rate was -3.62% and 10.84% for the three months ended March 31, 2018 and 2017, respectively.  The overall decrease in the effective income tax rate is largely as a result of prior year increases in uncertain tax positions, which occurred during the three months ended March 31, 2017.  The variance from the U.S. federal statutory tax rate of 21% and 34% for the three months ended March 31, 2018 and 2017, respectively, was primarily attributable to the utilization of deferred tax attributes that had a full valuation allowance.    

Management assesses its deferred tax assets quarterly to determine whether all or any portion of the asset is more likely than not unrealizable under Accounting Standards Codification (ASC) Topic 740.  The Company is required to establish a valuation allowance for any portion of the asset that management concludes is more likely than not to be unrealizable.  The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible.  The Company’s assessment considers all evidence, both positive and negative, including the nature, frequency and severity of any current and cumulative losses, taxable income in carryback years, the scheduled reversal of deferred tax liabilities, tax planning strategies, and projected future taxable income in making this assessment.  At March 31, 2018 and December 31, 2017, the Company has a valuation allowance against net deferred tax assets but for the exclusion of a deferred tax liability generated by goodwill (an indefinite lived intangible) that may not be considered a future source of taxable income in evaluating the need for a valuation allowance.

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Stockholders' Equity

3 Months Ended

Mar. 31, 2018

Class Of Stock Disclosures [Abstract]

Stockholders' Equity

Note 11. Stockholders’ Equity

Shares Reserved for Future Issuance

The following common stock is reserved for future issuance at March 31, 2018 and December 31, 2017:

	March 31, 2018 (1)		December31, 2017 (1)
Warrants issued and outstanding		51,003		51,003
Stock option awards issued and outstanding		1,735,458		1,203,627
Authorized for grants under the 2016 Equity Incentive Plan		427,530		633,052
Authorized for grants under the 2016 Employee Stock Purchase Plan		100,000		100,000
		2,313,991		1,987,682

(1) Treasury stock in the amount of 86,168 and 135,000 as of March 31, 2018 and December 31, 2017, respectively, are excluded from the table above.

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Stock Options

3 Months Ended

Mar. 31, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock Options

Note 12. Stock Options

The following table summarizes the outstanding stock option activity during the periods indicated:

	Number of shares			Weighted average exercise price		Weighted average remaining contractual term
Balance at December 31, 2017		1,203,627		$	7.06		8.10
Granted		638,300			10.75		9.81
Exercised		(52,970	)		1.96		3.92
Expired/Forfeited		(53,499	)		9.55		0.06
Balance at March 31, 2018		1,735,458		$	8.49		8.57
Vested and exercisable at March 31, 2018		499,046		$	2.25		6.72
Vested and expected to vest at March 31, 2018		1,735,458		$	8.49		8.57

The weighted average grant date fair value of options granted during the three months ended March 31, 2018 and for the year ended December 31, 2017 was $4.31 and $6.02, respectively. For fully vested stock options, the aggregate intrinsic value as of March 31, 2018 and December 31, 2017 was $2,804,129 and $3,596,624, respectively. For stock options expected to vest, the aggregate intrinsic value as of March 31, 2018 and December 31, 2017 was $921,408 and $1,469,154, respectively.

At March 31, 2018 and December 31, 2017, there was $4,594,157 and $2,453,342, respectively, of total unrecognized compensation cost related to unvested stock options granted under the Company’s equity plans. That cost is expected to be recognized over the next three years and is based on the date the options were granted.

The Company currently uses authorized and unissued shares to satisfy share award exercises.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2018

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note 13. Commitments and Contingencies

Operating Leases

The Company has entered into lease agreements for office space and research facilities in San Diego, California, Rancho Santa Fe, California, Poway, California, Melbourne, Florida, Scottsdale, Arizona, Taipei, Taiwan, Shenzhen and Jiangsu, China, and Cambridgeshire, United Kingdom. Rent expense was $232,947 and $183,615 for the three months ended March 31, 2018 and 2017, respectively. The longest lease expires in February 2022. The Company moved into its facility in San Diego, California during the year ended December 31, 2014. The San Diego facility lease agreement included a tenant improvement allowance which provided for the landlord to pay for tenant improvements on behalf of the Company up to $515,000. Based on the terms of this landlord incentive and involvement of the Company in the construction process, the leasehold improvements purchased under the landlord incentive were determined to be property of the Company.

The future minimum lease payments required under operating leases in effect at March 31, 2018 were as follows:

Year ending:
2018 (remaining nine months)	$	782,298
2019		832,020
2020		502,461
2021		134,529
2022		22,527
	$	2,273,835

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Concentration of Credit Risk

3 Months Ended

Mar. 31, 2018

Risks And Uncertainties [Abstract]

Concentration of Credit Risk

Note 14. Concentration of Credit Risk

(a) Concentration of Sales and Accounts Receivable

The following represents customers that accounted for 10% or more of total revenue during the three months ended March 31, 2018 and 2017 and customers that accounted for 10% or more of total trade accounts receivable at March 31, 2018 and 2017.

	Three Months Ended March 31,
	2018			2017
Percentage of net revenue
Customer A		30	%		22	%
Customer B		8			14
Customer C		4			13
	As of March 31,
	2018			2017
Percentage of gross trade accounts receivable
Customer A		22	%		14	%
Customer B		11			14
Customer C		6			16
Customer D		6			11

(b) Revenue by Geography

Net revenue by geographic area are as follows. Revenue is attributed by geographic location based on the bill-to location of the Company’s customers.

	Three Months Ended March 31,
	2018			2017
Percentage of net revenue
China		64	%		71	%
Other Asia		8			13
North America		22			10
Europe		6			6

Although the Company ships the majority of antennas to its customers in China (primarily Original Design Manufacturers and distributors), the end-users of the Company’s products are much more geographically diverse.

(c) Concentration of Purchases

During the three months ended March 31, 2018, all the Company’s products were manufactured by two vendors in China and by the Company’s facilities in Arizona.  During the three months ended March 31, 2017, all the Company’s products were manufactured by two vendors in China.  

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Subsequent Events

3 Months Ended

Mar. 31, 2018

Subsequent Events [Abstract]

Subsequent Events

Note 15. Subsequent Events

On May 2, 2018, Charles Myers, Chief Executive Officer, President and member of the Company’s Board of Directors (the Board) resigned from all positions with the Company, effective immediately, to pursue other opportunities.  The Board accepted Mr. Myers resignation on May 2, 2018.  Mr. Myer’s decision to resign was not related to a disagreement with the Company over any of its operations, policies, or practices.  

In connection with his resignation, Mr. Myers will be eligible to receive the following severance benefits pursuant to a general release of claims as set forth in his employment agreement: a lump sum cash payment in the amount of $484,000; the reimbursement of business expenses in accordance with Company policies; the acceleration of all of his unvested options exercisable for a total of 282,994 shares; a lump sum payment in the amount of approximately $3,200 covering twelve months of monthly premiums for disability insurance under the Company’s disability insurance plan; and the continuation of his health coverage pursuant to COBRA at the Company’s expense for a period of twelve months following his last day of employment.  In connection with Mr. Myers’ resignation, the Company expects to book stock compensation expense of approximately $1.2 million for the three months ended June 30, 2018.  

Effective May 2, 2018, the Board appointed the Company’s current Chairman, James K. Sims, as interim Chief Executive Officer of the Company.  For his services as interim Chief Executive Officer, Mr. Sims will be paid a monthly retainer of $33,333, which equates to an annual retainer of $400,000 and was granted 175,000 options on May 8, 2018, which will vest in equal quarterly installments over the two years following his commencement of service as interim Chief Executive Officer, subject to his continued service in the role or as a member of the Board on each vesting date.  The stock options will also vest in full upon a change in control of the Company.    

On April 2, 2018, Glenn Selbo, Chief Operating Officer, resigned from his position with the Company.  Following his resignation, Mr. Selbo will be providing consulting services to the Company.  Mr. Selbo’s outstanding stock options will continue to vest during the term of his consulting services.  

In connection with his resignation, Mr. Selbo will be eligible to receive the following severance benefits pursuant to a general release of claims as set forth in his employment agreement: a lump cash payment in the amount of $150,000; and the continuation of his health coverage pursuant to COBRA at the Company’s expense for a period of six months following is last day of employment.  In connection with Mr. Selbo’s resignation, the Company expects to record stock compensation expense of approximately $44,000 for the three months ended June 30, 2018.  

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Basis of Presentation (Policies)

3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

The accompanying unaudited condensed financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) and applicable rules and regulations of the Securities and Exchange Commission (SEC) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Interim financial results are not necessarily indicative of results anticipated for the full year. As such, the information included in this quarterly report on Form 10-Q should be read in conjunction with the financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2017, from which the balance sheet information herein was derived.  

The condensed balance sheet as of December 31, 2017 included herein was derived from the audited financial statements as of that date but does not include all disclosures including notes required by GAAP.

The condensed statements of operations for the three months ended March 31, 2018 and March 31, 2017, and the balance sheet data as of March 31, 2018 have been prepared on the same basis as the audited financial statements.

In the opinion of management, the accompanying unaudited condensed financial statements reflect all adjustments, consisting of normal and recurring adjustments, necessary for a fair presentation of results of the Company’s operations and financial position for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full year ending December 31, 2018 or for any future period.   

Segment Information

Segment Information

The Company’s operations are located primarily in the United States, and most of its assets are located in San Diego, California and Scottsdale, Arizona. The Company operates in one segment related to the sale of antenna products. The Company’s chief operating decision-maker is its chief executive officer, who reviews operating results on an aggregate basis and manages the Company’s opertions as a single operating segment.

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include valuation of intangible assets and goodwill.

Fair Value Measurements

Fair Value Measurements

The carrying values of the Company’s financial instruments, including cash and cash equivalents, trade accounts receivable, accounts payable, accrued liabilities and debt approximate their fair values due to the short maturity of these instruments.

Fair value measurements are market-based measurements, not entity-specific measurements. Therefore, fair value measurements are determined based on the assumptions that market participants would use in pricing the asset or liability. The Company follows a three-level hierarchy to prioritize the inputs used in the valuation techniques to derive fair values. The basis for fair value measurements for each level within the hierarchy is described below:

• Level 1: Quoted prices in active markets for identical assets or liabilities.

• Level 2: Quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs are observable in active markets.

• Level 3: Valuations derived from valuation techniques in which one or more significant inputs are unobservable in active markets.

The Company’s accounting policy is to recognize transfers between levels of the fair value hierarchy on the date of the event or change in circumstances that caused the transfer. There were no transfers into or out of Level 1, Level 2, or Level 3 for the three months ended March 31, 2018 and for the year ended December 31, 2017.

Cash Equivalents and Short Term Investments

Cash Equivalents and Short-Term Investments

Cash equivalents are comprised of short-term, highly liquid investments with maturities of 90 days or less at the date of purchase.  

Short-term investments consist predominantly of commercial paper, corporate debt securities, U.S. Treasury securities and asset backed securities.  The Company classifies short-term investments based on the facts and circumstances surrounding the investments at the time of purchase and evaluates such classification as of each balance sheet date.  All short-term investments are classified as available-for-sale securities as of March 31, 2018 and are recorded at estimated fair value.  Unrealized gains and losses for available-for-sale securities are included in accumulated other comprehensive income (loss), a component of stockholders’ equity.  Realized gains and losses are included in other income, in the unaudited condensed statement of operations.  The Company evaluates its investments to determine whether those with unrealized loss positions are other than temporarily impaired.  Impairments are considered to be other than temporary if they are related to deterioration in credit risk or if it is likely that the Company will sell the securities before recovery of their cost basis.  

Inventory

Inventory

The 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.  With the acquisition of substantially all of the assets of Antenna Plus, LLC (“Antenna Plus”), in April 2017, the Company began manufacting products at its Scottsdale, Arizona and Shullsburg, Wisconsin locations.  In July 2017, the Company relocated all of its product manufacturing produced in Shullsburg, Wisconsin to the Scottsadale, Arizona facility.  See Note 6 for additional information relating to the Company’s acquisition of the Antenna Plus assets.  

Inventory is stated at the lower of cost or net realizable value.  For items manufactured by the Company, cost is determined using the weighted average cost method.  For items manufactured by third parties, cost is determined using the first-in, first-out method (FIFO).  Any adjustments to reduce the cost of inventories to their net realizable value are recognized in earnings in the current period.  As of March 31, 2018, the Company’s inventories consist primarily of raw materials.  Provisions for excess and obsolete inventories are estimated based on product life cycles, quality issues, and historical experience.  As of March 31, 2018, there is no provision for excess and obsolete inventories.    

Accumulated Other Comprehensive Income (Loss)

Accumulated Other Comprehensive Income (Loss)

Comprehensive income (loss) is comprised of net income (loss) and other comprehensive income (loss).  Accumulated other comprehensive income (loss) on the unaudited condensed balance sheet at March 31, 2018 includes unrealized gains and losses on the Company’s available-for-sale securities.  

Recent Accounting Pronouncements

Recent Accounting Pronouncements

In February 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-02, Leases (Topic 842), which requires lessees to recognize most leases on their balance sheets as lease liabilities with corresponding right-of-use assets. For public entities, ASU 2016-02 is effective for annual periods beginning after December 15, 2018, including interim periods within those fiscal years. For nonpublic entities, ASU 2016-02 is effective for fiscal year beginning after December 15, 2019 and interim periods within fiscal years beginning after December 15, 2020.  The Company is evaluating the effect that ASU 2016-02 will have on its financial statements and related disclosures.  The Company has not yet selected a transition method, nor has it determined the effect of the standard on its ongoing financial reporting.  

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The standard will replace most existing revenue recognition guidance in GAAP when it becomes effective. For public entities, ASU 2014-09 is effective for reporting periods beginning after December 15, 2017, including interim periods within that reporting period. For nonpublic entities, ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2018 and interim periods within those periods. The standard permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the effect that ASU 2014-09 will have on its financial statements and related disclosures. The Company has not yet selected a transition method nor has it determined the effect of the standard on the Company’s ongoing financial reporting.

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Net Income (Loss) Per Share (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Summary of Computation of Net Income (Loss) Per Share

The following table presents the computation of net income (loss) per share:

	Three Months Ended March 31,
	2018			2017
Numerator:
Net income (loss)	$	(1,105,791	)	$	385,090
Denominator:
Weighted average common shares outstanding - basic		9,479,742			9,359,562
Plus dilutive effect of potential common shares		—			842,044
Weighted average common shares outstanding - diluted		9,479,742			10,201,606
Net income (loss) per share:
Basic	$	(0.12	)	$	0.04
Diluted	$	(0.12	)	$	0.04

Summary of Potentially Dilutive Securities

Potentially dilutive securities not included in the calculation of diluted net income (loss) per share because to do so would be anti-dilutive are as follows:

	Three Months Ended March 31,
	2018		2017
Employee stock options		1,159,062		6,581
Warrants outstanding		51,003		—
Total		1,210,065		6,581

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Cash, Cash Equivalents and Short-Term Investments (Tables)

3 Months Ended

Mar. 31, 2018

Cash And Cash Equivalents [Abstract]

Schedule of Cash and Cash Equivalents and Short-Term Investments by Significant Investment Category

The following table shows the Company’s cash and cash equivalents and short-term investments by significant investment category as of March 31, 2018:

	March 31, 2018
	Amortized Cost		Gross Unrealized Losses			Estimated Fair Value		Cash and Cash Equivalents		Short-Term Investments
Cash	$	3,692,893	$	—		$	3,692,893	$	3,692,893	$	—
Level 1 (1):
Money market funds		5,031,300		—			5,031,300		5,031,300		—
U.S. treasury securities		2,492,664		(5,660	)		2,487,004		—		2,487,004
Subtotal		7,523,964		(5,660	)		7,518,304		5,031,300		2,487,004
Level 2 (2):
Commercial paper		10,460,305		—			10,460,305		2,987,944		7,472,361
Corporate debt obligations		4,551,681		(9,610	)		4,542,071		—		4,542,071
Repurchase agreements		3,000,450		—			3,000,450		3,000,450		—
Asset-backed securities		3,769,665		(5,773	)		3,763,892		749,920		3,013,972
Subtotal		21,782,101		(15,383	)		21,766,718		6,738,314		15,028,404
Total	$	32,998,958	$	(21,043	)	$	32,977,915	$	15,462,507	$	17,515,408

	December 31, 2017
	Amortized Cost		Gross Unrealized Losses			Estimated Fair Value		Cash and Cash Equivalents		Short-Term Investments
Cash	$	3,040,696	$	—		$	3,040,696	$	3,040,696	$	—
Level 1 (1):
Money market funds		8,234,751		—			8,234,751		8,234,751		—
U.S. treasury securities		2,490,799		(5,540	)		2,485,259		—		2,485,259
Subtotal		10,725,550		(5,540	)		10,720,010		8,234,751		2,485,259
Level 2 (2):
Commercial paper		9,716,093		—			9,716,093		—		9,716,093
Corporate debt obligations		6,829,191		(9,414	)		6,819,777		—		6,819,777
Repurchase agreements		3,000,233		—			3,000,233		3,000,233		—
Asset-backed securities		3,018,276		(1,953	)		3,016,323		750,388		2,265,935
Subtotal		22,563,793		(11,367	)		22,552,426		3,750,621		18,801,805
Total	$	36,330,039	$	(16,907	)	$	36,313,132	$	15,026,068	$	21,287,064

(1) Level 1 fair value estimates are based on quoted prices in active markets for identical assets or liabilities.

(2) Level 2 fair value estimates are based on observable inputs other than quoted prices in active markets for identical assets and liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.  

Summary of Short-term Investments with Unrealized Losses

The following table presents the Company’s short-term investments with unrealized losses by investment category and length of time that individual securities have been in a continuous unrealized loss position as of March 31, 2018:

	Less Than 12 Months
Description of Securities	Estimated Fair Value		Unrealized Losses
March 31, 2018
U.S. treasury securities	$	2,487,004	$	(5,660	)
Corporate debt obligations		4,542,071		(9,610	)
Asset-backed securities		3,013,972		(5,773	)
Total	$	10,043,047	$	(21,043	)

Schedule of Contractual Maturities of Short-term Investments

Contractual maturities of short-term investments as of March 31, 2018 are as follows:

	Estimated Fair Value
Due within one year	$	17,515,408
Total	$	17,515,408

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Property and Equipment (Tables)

3 Months Ended

Mar. 31, 2018

Property Plant And Equipment [Abstract]

Schedule of 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 to five years for all other property and equipment.  Property and equipment consist of the following:

	March 31,			December 31,
	2018			2017
Lab equipment	$	2,228,032		$	1,914,911
Computer equipment		169,366			169,366
Computer software		306,767			299,227
Furniture and fixtures		202,218			202,218
Tenant improvements		894,756			763,898
Other office equipment		115,520			63,825
		3,916,659			3,413,445
Less accumulated depreciation		(2,498,002	)		(2,376,585	)
	$	1,418,657		$	1,036,860

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Acquisitions (Tables) - Antenna Plus

3 Months Ended

Mar. 31, 2018

Business Acquisition [Line Items]

Summary of Allocation of Purchase Price for Acquired Identifiable Assets, Liabilities Assumed and Goodwill

The following table shows the allocation of the purchase price for Antenna Plus to the acquired identifiable assets, liabilities assumed and goodwill:

Consideration:
Cash	$	6,383,500
Working capital adjustments		(34,770	)
Fair value of total consideration transferred	$	6,348,730
Recognized amounts of identifiable assets acquired and liabilities assumed:
Accounts receivable	$	584,390
Inventory		432,770
Fixed assets		402,958
Intangible assets		2,600,000
Current liabilities		(121,879	)
Total identifiable net assets acquired		3,898,239
Goodwill		2,450,491
Total	$	6,348,730

Summary of Unaudited Pro Forma Information

The following unaudited pro forma financial information presents combined results of operations for each of the periods presented, as if Antenna Plus had been acquired as of the beginning of the fiscal year 2017.  The pro forma information includes adjustments to amortization and depreciation for intangible assets and property, plant and equipment acquired.  The pro forma data are for informational purposes only and are not necessarily indicative of the consolidated results of operations of the combined business had the acquisition actually occurred at the beginning of fiscal year 2017 or of the results of future operations of the combined business.  Consequently, actual results will differ from the unaudited pro forma information presented below:

	Three Months Ended March 31,
	2018			2017
Pro forma sales	$	13,305,098		$	13,026,993
Pro forma income from operations	$	(1,163,669	)	$	927,532
Pro forma net income	$	(1,105,791	)	$	887,143

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Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2018

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Acquired Intangible Assets

The following is a summary of the Company’s acquired intangible assets:

	March 31, 2018
	Weighted Average Amortization Period (years)		Gross Carrying Amount		Accumulated Amortization		Intangibles, Net
Customer relationships		10	$	4,830,000	$	874,832	$	3,955,168
Developed technologies		9		1,080,000		175,489		904,511
Tradename		3		120,000		36,667		83,333
Non-compete agreement		3		67,000		51,107		15,893
Total intangible assets, net		10	$	6,097,000	$	1,138,095	$	4,958,905

	December 31, 2017
	Weighted Average Amortization Period (years)		Gross Carrying Amount		Accumulated Amortization		Intangibles, Net
Customer relationships		10	$	4,830,000	$	754,082	$	4,075,918
Developed technologies		9		1,080,000		142,477		937,523
Tradename		3		120,000		26,667		93,333
Non-compete agreement		3		67,000		45,523		21,477
Total intangible assets, net		10	$	6,097,000	$	968,749	$	5,128,251

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 result of acquisitions, divestitures, asset impairments, among other factors. Amortization expense was $169,346 and $97,346 for the three months ended March 31, 2018 and 2017, respectively.

	Estimated Future Amortization
2018 (remaining nine months)	$	507,182
2019		655,052
2020		627,667
2021		598,420
2022		563,000
Thereafter		2,007,584
Total	$	4,958,905

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Long-term Notes Payable (including current portion) and Line of Credit (Tables)

3 Months Ended

Mar. 31, 2018

Loan Agreement With Silicon Valley Bank

Schedule of Principal Payment of Loan

The remaining principal payments on the $4.0 million term loan subsequent to March 31, 2018 are as follows:

Year ending:
2018 (remaining nine months)	$	1,000,000
	$	1,000,000

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Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2018

Class Of Stock Disclosures [Abstract]

Schedule of Common Stock Reserved for Future Issuance

The following common stock is reserved for future issuance at March 31, 2018 and December 31, 2017:

	March 31, 2018 (1)		December31, 2017 (1)
Warrants issued and outstanding		51,003		51,003
Stock option awards issued and outstanding		1,735,458		1,203,627
Authorized for grants under the 2016 Equity Incentive Plan		427,530		633,052
Authorized for grants under the 2016 Employee Stock Purchase Plan		100,000		100,000
		2,313,991		1,987,682

(1) Treasury stock in the amount of 86,168 and 135,000 as of March 31, 2018 and December 31, 2017, respectively, are excluded from the table above.

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Stock Options (Tables)

3 Months Ended

Mar. 31, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Outstanding Stock Option Activity

The following table summarizes the outstanding stock option activity during the periods indicated:

	Number of shares			Weighted average exercise price		Weighted average remaining contractual term
Balance at December 31, 2017		1,203,627		$	7.06		8.10
Granted		638,300			10.75		9.81
Exercised		(52,970	)		1.96		3.92
Expired/Forfeited		(53,499	)		9.55		0.06
Balance at March 31, 2018		1,735,458		$	8.49		8.57
Vested and exercisable at March 31, 2018		499,046		$	2.25		6.72
Vested and expected to vest at March 31, 2018		1,735,458		$	8.49		8.57

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Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2018

Commitments And Contingencies Disclosure [Abstract]

Schedule Future Minimum Lease Payments Under Operating Leases

The future minimum lease payments required under operating leases in effect at March 31, 2018 were as follows:

Year ending:
2018 (remaining nine months)	$	782,298
2019		832,020
2020		502,461
2021		134,529
2022		22,527
	$	2,273,835

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Concentration of Credit Risk (Tables)

3 Months Ended

Mar. 31, 2018

Risks And Uncertainties [Abstract]

Schedule of Concentration of Sales and Accounts Receivable

The following represents customers that accounted for 10% or more of total revenue during the three months ended March 31, 2018 and 2017 and customers that accounted for 10% or more of total trade accounts receivable at March 31, 2018 and 2017.

	Three Months Ended March 31,
	2018			2017
Percentage of net revenue
Customer A		30	%		22	%
Customer B		8			14
Customer C		4			13
	As of March 31,
	2018			2017
Percentage of gross trade accounts receivable
Customer A		22	%		14	%
Customer B		11			14
Customer C		6			16
Customer D		6			11

Schedule of Revenue by Geographic area

Net revenue by geographic area are as follows. Revenue is attributed by geographic location based on the bill-to location of the Company’s customers.

	Three Months Ended March 31,
	2018			2017
Percentage of net revenue
China		64	%		71	%
Other Asia		8			13
North America		22			10
Europe		6			6

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Basis of Presentation - Additional Information (Details)	3 Months Ended
	Mar. 31, 2018 Segment
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Number of operating segments	1

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Net Income (Loss) Per Share - Summary of Computation of Net Income (Loss) Per Share (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Numerator:
Net income (loss)	$ (1,105,791)	$ 385,090
Denominator:
Basic	9,479,742	9,359,562
Plus dilutive effect of potential common shares		842,044
Weighted average common shares outstanding - diluted	9,479,742	10,201,606
Net income (loss) per share:
Basic	$ (0.12)	$ 0.04
Diluted	$ (0.12)	$ 0.04

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Net Income (Loss) Per Share - Additional Information (Details) - shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net Income (Loss) Per Share [Line Items]
Diluted weighted average common shares outstanding	9,479,742	10,201,606
Warrant
Net Income (Loss) Per Share [Line Items]
Diluted weighted average common shares outstanding		10,532
Options Outstanding
Net Income (Loss) Per Share [Line Items]
Diluted weighted average common shares outstanding		831,512

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Net Income (Loss) Per Share - Summary of Potentially Dilutive Securities (Details) - shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
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	1,210,065	6,581
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	1,159,062	6,581
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

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Cash, Cash Equivalents and Short-Term Investments - Schedule of Cash and Cash Equivalents and Short-term Investments by Significant Investment Category (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Cash And Cash Equivalents And Short Term Investments [Line Items]
Cash	$ 3,692,893	$ 3,040,696
Short term investments Gross Unrealized Losses	(21,043)	(16,907)
Short term investments	17,515,408	21,287,064
Cash and cash equivalents and Short term investments, Amortized Cost	32,998,958	36,330,039
Cash and cash equivalents and Short term investments, Estimated Fair Value	32,977,915	36,313,132
Cash and cash equivalents	15,462,507	15,026,068	$ 41,859,298	$ 45,161,403
Level 1
Cash And Cash Equivalents And Short Term Investments [Line Items]
Short term investments Gross Unrealized Losses	(5,660)	(5,540)
Cash equivalents and Short term investments, Estimated Fair Value	7,518,304	10,720,010
Cash equivalents and Short term investments, Amortized Cost	7,523,964	10,725,550
Level 2
Cash And Cash Equivalents And Short Term Investments [Line Items]
Cash equivalents	6,738,314	3,750,621
Short term investments Gross Unrealized Losses	(15,383)	(11,367)
Short term investments	15,028,404	18,801,805
Cash equivalents and Short term investments, Estimated Fair Value	21,766,718	22,552,426
Cash equivalents and Short term investments, Amortized Cost	21,782,101	22,563,793
Money Market Funds | Level 1
Cash And Cash Equivalents And Short Term Investments [Line Items]
Cash equivalents	5,031,300	8,234,751
Repurchase Agreements | Level 2
Cash And Cash Equivalents And Short Term Investments [Line Items]
Cash equivalents	3,000,450	3,000,233
US Treasury Securities | Level 1
Cash And Cash Equivalents And Short Term Investments [Line Items]
Short Term Investments Amortized Cost	2,492,664	2,490,799
Short term investments Gross Unrealized Losses	(5,660)	(5,540)
Short term investments	2,487,004	2,485,259
Commercial Paper | Level 2
Cash And Cash Equivalents And Short Term Investments [Line Items]
Cash equivalents	2,987,944
Short Term Investments Amortized Cost	10,460,305	9,716,093
Short term investments	7,472,361	9,716,093
Cash equivalents and Short term investments, Estimated Fair Value	10,460,305
Corporate Debt Securities | Level 2
Cash And Cash Equivalents And Short Term Investments [Line Items]
Short Term Investments Amortized Cost	4,551,681	6,829,191
Short term investments Gross Unrealized Losses	(9,610)	(9,414)
Short term investments	4,542,071	6,819,777
Asset-backed Securities | Level 2
Cash And Cash Equivalents And Short Term Investments [Line Items]
Cash equivalents	749,920	750,388
Short Term Investments Amortized Cost	3,769,665	3,018,276
Short term investments Gross Unrealized Losses	(5,773)	(1,953)
Short term investments	3,013,972	2,265,935
Cash equivalents and Short term investments, Estimated Fair Value	$ 3,763,892	$ 3,016,323

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Cash, Cash Equivalents and Short-Term Investments - Summary of Short-term Investments with Unrealized Losses (Details)	3 Months Ended
	Mar. 31, 2018 USD ($)
Cash And Cash Equivalents And Short Term Investments [Line Items]
Less Than 12 Months, Estimated Fair Value	$ 10,043,047
Less Than 12 Months, Unrealized Losses.	(21,043)
US Treasury Securities
Cash And Cash Equivalents And Short Term Investments [Line Items]
Less Than 12 Months, Estimated Fair Value	2,487,004
Less Than 12 Months, Unrealized Losses.	(5,660)
Corporate Debt Securities
Cash And Cash Equivalents And Short Term Investments [Line Items]
Less Than 12 Months, Estimated Fair Value	4,542,071
Less Than 12 Months, Unrealized Losses.	(9,610)
Asset-backed Securities
Cash And Cash Equivalents And Short Term Investments [Line Items]
Less Than 12 Months, Estimated Fair Value	3,013,972
Less Than 12 Months, Unrealized Losses.	$ (5,773)

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Cash, Cash Equivalents and Short-Term Investments - Schedule of Contractual Maturities of Short-term Investments (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Investments Debt And Equity Securities [Abstract]
Due within one year	$ 17,515,408
Total	$ 17,515,408	$ 21,287,064

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Property and Equipment - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Property Plant And Equipment [Line Items]
Depreciation expense	$ 121,417	$ 115,447
Tenant Improvement | Minimum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful Life	6 years
Tenant Improvement | Maximum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful Life	10 years
Property and Equipment, Other Types | Minimum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful Life	3 years
Property and Equipment, Other Types | Maximum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful Life	5 years

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Property and Equipment - Schedule of Property and Equipment (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 3,916,659	$ 3,413,445
Less accumulated depreciation	(2,498,002)	(2,376,585)
Property and equipment, net	1,418,657	1,036,860
Lab Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	2,228,032	1,914,911
Computer Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	169,366	169,366
Computer Software
Property Plant And Equipment [Line Items]
Property and equipment, gross	306,767	299,227
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Property and equipment, gross	202,218	202,218
Tenant Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	894,756	763,898
Other Office Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 115,520	$ 63,825

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Acquisitions - Additional Information (Details) - USD ($)		3 Months Ended
	Apr. 27, 2017	Mar. 31, 2018	Mar. 31, 2017
Business Acquisition [Line Items]
Business acquisition, revenue		$ 13,305,098	$ 11,252,417
Business acquisition, cost of goods sold		7,110,927	5,963,959
Net income (loss)		(1,105,791)	$ 385,090
Antenna Plus
Business Acquisition [Line Items]
Total consideration paid in cash	$ 6,348,730
Business acquisition, revenue		2,300,000
Business acquisition, cost of goods sold		900,000
Net income (loss)		$ 700,000
Business acquisition pro forma information description		The pro forma information includes adjustments to amortization and depreciation for intangible assets and property, plant and equipment acquired. The pro forma data are for informational purposes only and are not necessarily indicative of the consolidated results of operations of the combined business had the acquisition actually occurred at the beginning of fiscal year 2017 or of the results of future operations of the combined business.

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Acquisitions - Summary of Allocation of Purchase Price for Acquired Identifiable Assets, Liabilities Assumed and Goodwill (Details) - USD ($)	Apr. 27, 2017	Mar. 31, 2018	Dec. 31, 2017
Recognized amounts of identifiable assets acquired and liabilities assumed:
Goodwill		$ 3,700,447	$ 3,700,447
Antenna Plus
Consideration:
Cash	$ 6,383,500
Working capital adjustments	(34,770)
Fair value of total consideration transferred	6,348,730
Recognized amounts of identifiable assets acquired and liabilities assumed:
Accounts receivable	584,390
Inventory	432,770
Fixed assets	402,958
Intangible assets	2,600,000
Current liabilities	(121,879)
Total identifiable net assets acquired	3,898,239
Goodwill	2,450,491
Total	$ 6,348,730

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Acquisitions - Summary of Unaudited Pro Forma Information (Details) - Antenna Plus - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Business Acquisition [Line Items]
Pro forma sales	$ 13,305,098	$ 13,026,993
Pro forma income from operations	(1,163,669)	927,532
Pro forma net income	$ (1,105,791)	$ 887,143

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Intangible Assets - Summary of Acquired Intangible Assets (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (years)	10 years	10 years
Gross Carrying Amount	$ 6,097,000	$ 6,097,000
Accumulated Amortization	1,138,095	968,749
Intangibles, Net	$ 4,958,905	$ 5,128,251
Developed technologies
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (years)	9 years	9 years
Gross Carrying Amount	$ 1,080,000	$ 1,080,000
Accumulated Amortization	175,489	142,477
Intangibles, Net	$ 904,511	$ 937,523
Customer relationships
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (years)	10 years	10 years
Gross Carrying Amount	$ 4,830,000	$ 4,830,000
Accumulated Amortization	874,832	754,082
Intangibles, Net	$ 3,955,168	$ 4,075,918
Tradename
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (years)	3 years	3 years
Gross Carrying Amount	$ 120,000	$ 120,000
Accumulated Amortization	36,667	26,667
Intangibles, Net	$ 83,333	$ 93,333
Non-compete agreement
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (years)	3 years	3 years
Gross Carrying Amount	$ 67,000	$ 67,000
Accumulated Amortization	51,107	45,523
Intangibles, Net	$ 15,893	$ 21,477

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Intangible Assets - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization	$ 169,346	$ 97,346

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Intangible Assets - Schedule of Estimated Annual Amortization of Intangible Assets (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
2018 (remaining nine months)	$ 507,182
2019	655,052
2020	627,667
2021	598,420
2022	563,000
Thereafter	2,007,584
Intangibles, Net	$ 4,958,905	$ 5,128,251

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Long-term Notes Payable (including current portion) and Line of Credit - Additional Information (Details)		1 Months Ended			3 Months Ended
	Feb. 01, 2017 USD ($)	Jan. 31, 2018 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2013 USD ($) Installment	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Loan Agreement With Silicon Valley Bank
Line Of Credit Facility [Line Items]
Loan agreement amount			$ 4,000,000		$ 4,000,000
Term of payments			36 months
Date of maturity			Dec. 01, 2018
Liquidity ratio					125.00%
Interest rate fixed percentage			5.00%
Loan Agreement With Silicon Valley Bank | Maximum
Line Of Credit Facility [Line Items]
Unrestricted Cash Required For Line Of Credit Covenant					$ 25,000,000
Silicon Valley Bank | Revolving Credit Facility | Growth Capital Term Loan
Line Of Credit Facility [Line Items]
Line of credit facility allowable amount				$ 750,000
Line of credit facility, payment terms					The growth capital term loan required interest only payments through June 30, 2014 at which point it was to be repaid in 32 equal monthly installments of interest and principal.
Number of monthly installments for principal and interest payment | Installment				32
Line of credit facility maturity date					Feb. 01, 2017
Payment of principal and accrued interest	$ 55,230
Line of credit facility interest rate				6.50%
Line of credit					$ 0	$ 0
Silicon Valley Bank | Revolving Credit Facility
Line Of Credit Facility [Line Items]
Line of credit facility allowable amount		$ 10,000,000
Line of credit facility maturity date					Jan. 31, 2020
Line of credit					$ 0	$ 0
Liquidity ratio		125.00%
Line of credit facility borrowing base limitation percentage of eligible receivables		80.00%
Interest rate fixed percentage		$ 3,000
Line of credit facility frequency of payments on monthly installments					Borrowings outstanding under the term loan under the amended and restated loan and security agreement will continue to be repaid in equal monthly installments of interest and principal and matures on December 1, 2018.
Silicon Valley Bank | Revolving Credit Facility | The Wall Street Journal Prime Rate
Line Of Credit Facility [Line Items]
Basis spread on variable interest rate		1.00%
Line of credit facility interest rate description					The Company will be required to pay interest on borrowings outstanding, if any, under the revolving line of credit at a floating rate per annum equal to 1% above the Wall Street Journal prime rate (4.75% as of March 31, 2018) (or, if unavailable, the Silicon Valley Bank prime rate) on a monthly basis, so long as the Company maintains a liquidity ratio of cash and cash equivalents plus accounts receivable to outstanding debt under the Amended Loan Agreement minus deferred revenue of 1.50 to 1.00. If this liquidity ratio is not met, the Company will be subject to a minimum interest charge of $3,000 per month and borrowings outstanding, if any, under the revolving line of credit will accrue interest at a floating rate per annum equal to 2% above the Wall Street Journal prime rate (4.75% as of March 31, 2018) (or, if unavailable the Silicon Valley Bank prime rate) on a monthly basis. Prior to the amendment in January 2018, the revolving line of credit bore interest rate at the U.S. prime rate plus 1.25%. The revolving line of credit matures on January 31, 2020.
Line of credit facility floating rate not met		2.00%
Silicon Valley Bank | Revolving Credit Facility | Prime Rate
Line Of Credit Facility [Line Items]
Liquidity ratio		150.00%
Silicon Valley Bank | Revolving Credit Facility | U.S. Prime Rate
Line Of Credit Facility [Line Items]
Basis spread on variable interest rate		1.25%

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Long-term Notes Payable (including current portion) and Line of Credit - Schedule of Remaining Principal Payment (Details) - Loan Agreement With Silicon Valley Bank	Mar. 31, 2018 USD ($)
Line Of Credit Facility [Line Items]
2018 (remaining nine months)	$ 1,000,000
Long Term Debt	$ 1,000,000

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Treasury Stock - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended	12 Months Ended
	Aug. 31, 2017	Mar. 31, 2018	Dec. 31, 2017
Equity Class Of Treasury Stock [Line Items]
Common stock repurchase, value		$ 2,000,000
Common Stock
Equity Class Of Treasury Stock [Line Items]
Stock repurchase, shares			135,000
Common Stock | Share Repurchase Program August 2017
Equity Class Of Treasury Stock [Line Items]
Stock repurchase, shares		86,168
Stock repurchase, average price per share		$ 9.06
Stock repurchase, cost		$ 779,913
Common Stock | Board of Directors | Share Repurchase Program August 2017
Equity Class Of Treasury Stock [Line Items]
Stock approved for repurchase, value	$ 7,000,000
Period of stock repurcahse program	12 months

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Income Taxes - Additional Information (Details)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Effective income tax rate	(3.62%)	10.84%
U.S. federal statutory tax rate	21.00%	34.00%

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Stockholders' Equity - Schedule of Common Stock Reserved for Future Issuance (Details) - shares		Mar. 31, 2018	Dec. 31, 2017
Class Of Stock [Line Items]
Common stock, reserved for future issuance	[1]	2,313,991	1,987,682
Warrants Issued and Outstanding
Class Of Stock [Line Items]
Common stock, reserved for future issuance	[1]	51,003	51,003
Stock Option Awards Issued and Outstanding
Class Of Stock [Line Items]
Common stock, reserved for future issuance	[1]	1,735,458	1,203,627
Authorized for Grants under the 2016 Equity Incentive Plan
Class Of Stock [Line Items]
Common stock, reserved for future issuance	[1]	427,530	633,052
Authorized for grants under the 2016 Employee Stock Purchase Plan
Class Of Stock [Line Items]
Common stock, reserved for future issuance	[1]	100,000	100,000

[1] Treasury stock in the amount of 86,168 and 135,000 as of March 31, 2018 and December 31, 2017, respectively, are excluded from the table above.

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Stockholders' Equity - Schedule of Common Stock Reserved for Future Issuance (Parenthetical) (Details) - Common Stock - shares	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Class Of Stock [Line Items]
Stock repurchase, shares		135,000
Share Repurchase Program August 2017
Class Of Stock [Line Items]
Stock repurchase, shares	86,168

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Stock Options - Summary of Outstanding Stock Option Activity (Details) - $ / shares	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of shares, Beginning balance	1,203,627
Number of shares, Granted	638,300
Number of shares, Exercised	(52,970)
Number of shares, Expired/Forfeited	(53,499)
Number of shares, Ending balance	1,735,458	1,203,627
Number of shares, Vested and exercisable	499,046
Number of shares, Vested and expected to vest	1,735,458
Weighted average exercise price, Beginning balance	$ 7.06
Weighted average exercise price, Granted	10.75
Weighted average exercise price, Exercised	1.96
Weighted average exercise price, Expired/Forfeited	9.55
Weighted average exercise price, Ending balance	8.49	$ 7.06
Weighted average exercise price, Vested and exercisable	2.25
Weighted average exercise price, Vested and expected to vest	$ 8.49
Weighted average remaining contractual term	8 years 6 months 25 days	8 years 1 month 6 days
Weighted average remaining contractual term, Granted	9 years 9 months 21 days
Weighted average remaining contractual term, Exercised	3 years 11 months 1 day
Weighted average remaining contractual term, Expired/Forfeited	21 days
Weighted average remaining contractual term, Vested and exercisable	6 years 8 months 19 days
Weighted average remaining contractual term, Vested and expected to vest	8 years 6 months 25 days

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Stock Options - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Weighted average grant-date fair value of options granted	$ 4.31	$ 6.02
Stock options vested aggregate intrinsic value	$ 2,804,129	$ 3,596,624
Stock options expected to vest aggregate intrinsic value	921,408	1,469,154
Total unrecognized compensation cost related to unvested stock options and restricted stock granted under the Company's equity plans	$ 4,594,157	$ 2,453,342
Unrecognized compensation cost related to unvested stock options and restricted stock granted under the Company's equity plans, period for recognition	3 years

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Commitments and Contingencies - Additional Information (Detail) - Office Space and Research Facilities Lease - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Commitment And Contingencies [Line Items]
Operating leases, rent expense	$ 232,947	$ 183,615
Lease agreement description	The San Diego facility lease agreement included a tenant improvement allowance which provided for the landlord to pay for tenant improvements on behalf of the Company up to $515,000. Based on the terms of this landlord incentive and involvement of the Company in the construction process, the leasehold improvements purchased under the landlord incentive were determined to be property of the Company.
Lease expiration date	Feb. 28, 2022
Maximum
Commitment And Contingencies [Line Items]
Payments for tenant improvements allowance	$ 515,000

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Commitments and Contingencies - Schedule Future Minimum Lease Payments Under Operating Leases (Detail)	Mar. 31, 2018 USD ($)
Future minimum lease payment
2018 (remaining nine months)	$ 782,298
2019	832,020
2020	502,461
2021	134,529
2022	22,527
Total future minimum lease payment	$ 2,273,835

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Concentration of Credit Risk - Additional Information (Details) - Vendor	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
China
Concentration Risk [Line Items]
Number of vendors	2	2
Customer Concentration Risk | Net Revenue
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	10.00%
Customer Concentration Risk | Net Revenue | China
Concentration Risk [Line Items]
Concentration risk percentage	64.00%	71.00%
Customer Concentration Risk | Trade Accounts Receivable
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	10.00%

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Concentration of Credit Risk - Schedule of Concentration of Sales and Accounts Receivable (Details) - Customer Concentration Risk	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net Revenue
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	10.00%
Net Revenue | Customer A
Concentration Risk [Line Items]
Concentration risk percentage	30.00%	22.00%
Net Revenue | Customer B
Concentration Risk [Line Items]
Concentration risk percentage	8.00%	14.00%
Net Revenue | Customer C
Concentration Risk [Line Items]
Concentration risk percentage	4.00%	13.00%
Trade Accounts Receivable
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	10.00%
Trade Accounts Receivable | Customer A
Concentration Risk [Line Items]
Concentration risk percentage	22.00%	14.00%
Trade Accounts Receivable | Customer B
Concentration Risk [Line Items]
Concentration risk percentage	11.00%	14.00%
Trade Accounts Receivable | Customer C
Concentration Risk [Line Items]
Concentration risk percentage	6.00%	16.00%
Trade Accounts Receivable | Customer D
Concentration Risk [Line Items]
Concentration risk percentage	6.00%	11.00%

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Concentration of Credit Risk - Schedule of Revenue by Geography (Details) - Customer Concentration Risk - Net Revenue	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	10.00%
China
Concentration Risk [Line Items]
Concentration risk percentage	64.00%	71.00%
Other Asia
Concentration Risk [Line Items]
Concentration risk percentage	8.00%	13.00%
North America
Concentration Risk [Line Items]
Concentration risk percentage	22.00%	10.00%
Europe
Concentration Risk [Line Items]
Concentration risk percentage	6.00%	6.00%

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Subsequent Events - Additional Information (Details) - USD ($)				3 Months Ended
	May 08, 2018	May 02, 2018	Apr. 02, 2018	Jun. 30, 2018	Mar. 31, 2018	Mar. 31, 2017
Subsequent Event [Line Items]
Stock compensation expense					$ 358,896	$ 73,475
Number of shares, Granted					638,300
Mr. Charles Myers | Scenario, Forecast
Subsequent Event [Line Items]
Stock compensation expense				$ 1,200,000
Mr. Charles Myers | Subsequent Event
Subsequent Event [Line Items]
Severance amount paid in cash		$ 484,000
Unvested options exercisable shares		282,994
Number of monthly premiums for disability insurance		12 months
Mr. Charles Myers | Disability Insurance Plan | Subsequent Event
Subsequent Event [Line Items]
Severance amount paid in cash		$ 3,200
Mr. James K. Sims | Subsequent Event
Subsequent Event [Line Items]
Monthly retainer amount		33,333
Annual retainer		$ 400,000
Number of shares, Granted	175,000
Vesting period	2 years
Mr. Selbo | Scenario, Forecast
Subsequent Event [Line Items]
Stock compensation expense				$ 44,000
Mr. Selbo | Subsequent Event
Subsequent Event [Line Items]
Severance amount paid in cash			$ 150,000