Airgain (AIRG) 10-Q 9 Aug 18 2018 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Aug. 07, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2
Trading Symbol	AIRG
Entity Registrant Name	AIRGAIN INC
Entity Central Index Key	1,272,842
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		9,892,128

Unaudited Condensed Balance She

Unaudited Condensed Balance Sheets - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 13,259,357	$ 15,026,068
Short term investments	18,817,655	21,287,064
Trade accounts receivable	6,854,651	8,418,132
Inventory	793,874	741,557
Prepaid expenses and other current assets	638,823	609,786
Total current assets	40,364,360	46,082,607
Property and equipment, net	1,423,211	1,036,860
Goodwill	3,700,447	3,700,447
Customer relationships, net	3,834,418	4,075,918
Intangible assets, net	955,141	1,052,333
Other assets	338,121	349,743
Total assets	50,615,698	56,297,908
Current liabilities:
Accounts payable	3,975,266	3,969,083
Accrued bonus	1,498,455	2,224,517
Accrued liabilities	1,043,324	1,121,833
Deferred purchase price		1,000,000
Long-term notes payable	666,667	1,333,333
Current portion of deferred rent obligation under operating lease	81,332	81,332
Total current liabilities	7,265,044	9,730,098
Deferred tax liability	27,263	7,971
Deferred rent obligation under operating lease	282,923	334,860
Total liabilities	7,575,230	10,072,929
Stockholders’ equity:
Common shares, par value $0.0001, 200,000,000 shares authorized at June 30, 2018 and December 31, 2017; 9,753,086 and 9,616,992 shares issued at June 30, 2018 and December 31, 2017, respectively; 9,467,558 and 9,481,992 shares outstanding at June 30, 2018 and December 31, 2017, respectively	975	961
Additional paid in capital	92,335,565	89,907,766
Treasury stock, at cost: 285,528 and 135,000 shares at June 30, 2018 and December 31, 2017, respectively	(2,580,273)	(1,257,100)
Accumulated other comprehensive loss	(9,920)	(16,907)
Accumulated deficit	(46,705,879)	(42,409,741)
Total stockholders’ equity	43,040,468	46,224,979
Commitments and contingencies (note 14)
Total liabilities and stockholders’ equity	$ 50,615,698	$ 56,297,908

Unaudited Condensed Balance Sh3

Unaudited Condensed Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 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	9,753,086	9,616,992
Common stock, shares outstanding	9,467,558	9,481,992
Treasury stock, shares at cost	285,528	135,000

Unaudited Condensed Statements

Unaudited Condensed Statements of Operations - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Statement [Abstract]
Sales	$ 14,971,681	$ 13,013,143	$ 28,276,779	$ 24,265,560
Cost of goods sold	8,370,160	6,891,619	15,481,087	12,855,577
Gross profit	6,601,521	6,121,524	12,795,692	11,409,983
Operating expenses:
Research and development	2,418,325	1,819,288	4,687,439	3,416,087
Sales and marketing	4,094,828	1,792,010	6,979,213	3,420,151
General and administrative	3,737,654	2,637,380	5,941,994	4,275,419
Total operating expenses	10,250,807	6,248,678	17,608,646	11,111,657
Income (loss) from operations	(3,649,286)	(127,154)	(4,812,954)	298,326
Other expense (income):
Interest income	(128,781)	(53,965)	(239,212)	(91,166)
Gain on deferred purchase price liability	(388,733)		(388,733)
Interest expense	9,846	26,713	23,750	57,477
Total other income	(507,668)	(27,252)	(604,195)	(33,689)
Income (loss) before income taxes	(3,141,618)	(99,902)	(4,208,759)	332,015
Provision (benefit) for income taxes	48,729	(29,781)	87,379	17,045
Net income (loss)	$ (3,190,347)	$ (70,121)	$ (4,296,138)	$ 314,970
Net income (loss) per share:
Basic	$ (0.34)	$ (0.01)	$ (0.45)	$ 0.03
Diluted	$ (0.34)	$ (0.01)	$ (0.45)	$ 0.03
Weighted average shares used in calculating income (loss) per share:
Basic	9,439,025	9,520,285	9,459,272	9,440,368
Diluted	9,439,025	9,520,285	9,459,272	10,120,998

Unaudited Condensed Statements5

Unaudited Condensed Statements of Comprehensive Income (Loss) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ (3,190,347)	$ (70,121)	$ (4,296,138)	$ 314,970
Unrealized gain on available-for-sale securities, net of deferred taxes	11,125		6,987
Total comprehensive income (loss)	$ (3,179,222)	$ (70,121)	$ (4,289,151)	$ 314,970

Unaudited Condensed Statement o

Unaudited Condensed Statement of Stockholders' Equity - 6 months ended Jun. 30, 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	2,127,858		2,127,858
Exercise of stock options	$ 299,955	$ 14	299,941
Exercise of stock options, shares	136,094	136,094
Common stock repurchases	$ (1,323,173)			(1,323,173)
Common stock repurchases, shares		(150,528)
Unrealized gain on available-for-sale securities, net of tax	6,987				6,987
Net loss	(4,296,138)					(4,296,138)
Ending balance at Jun. 30, 2018	$ 43,040,468	$ 975	$ 92,335,565	$ (2,580,273)	$ (9,920)	$ (46,705,879)
Ending balance, shares at Jun. 30, 2018		9,467,558

Unaudited Condensed Statements7

Unaudited Condensed Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income (loss)	$ (4,296,138)	$ 314,970
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation	266,455	222,459
Amortization	338,692	321,804
Amortization of discounts on investments, net	(53,273)
Stock-based compensation	2,127,858	249,888
Deferred tax liability	19,292	21,331
Gain on deferred purchase price liability	(388,733)
Changes in operating assets and liabilities:
Trade accounts receivable	1,201,412	(2,358,425)
Inventory	(52,317)	(29,655)
Prepaid expenses and other assets	(17,415)	(163,428)
Accounts payable	131,985	82,616
Accrued bonus	(726,062)	(549,601)
Accrued liabilities	(78,509)	174,188
Deferred obligation under operating lease	(51,937)	(61,477)
Net cash used in operating activities	(1,578,690)	(1,775,330)
Cash flows from investing activities:
Cash paid for acquisition		(6,348,730)
Purchases of available-for-sale securities	(12,650,298)
Maturities of available-for-sale securities	15,179,967
Purchases of property and equipment	(652,806)	(169,931)
Net cash provided by (used in) investing activities	1,876,863	(6,518,661)
Cash flows from financing activities:
Repayment of notes payable	(666,666)	(721,896)
Payment on deferred purchase price liability	(375,000)
Reversal of costs related to initial public offering		781
Common stock repurchases	(1,323,173)
Proceeds from exercise of stock options	299,955	436,695
Net cash used in financing activities	(2,064,884)	(284,420)
Net decrease in cash and cash equivalents	(1,766,711)	(8,578,411)
Cash and cash equivalents, beginning of period	15,026,068	45,161,403
Cash and cash equivalents, end of period	13,259,357	36,582,992
Supplemental disclosure of cash flow information
Interest paid	26,713	$ 60,934
Taxes paid	$ 18,213

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 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 and six months ended June 30, 2018 and June 30, 2017, and the balance sheet data as of June 30, 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 interim 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 six months ended June 30, 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 June 30, 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 statements 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 (FIFO) method. Any adjustments to reduce the cost of inventories to their net realizable value are recognized in earnings in the current period. As of June 30, 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 June 30, 2018, there is no provision for excess and obsolete inventories. Accumulated Other Comprehensive Income (Loss) Accumulated other 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 June 30, 2018 includes unrealized gains and losses on the Company’s available-for-sale securities.

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 2. Summary of Significant Accounting Policies During the three and six months ended June 30, 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) In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers

Net Income (Loss) Per Share

Net Income (Loss) Per Share	6 Months Ended
	Jun. 30, 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 June 30, Six Months Ended June 30, 2018 2017 2018 2017 Numerator: Net income (loss) $ (3,190,347 ) $ (70,121 ) $ (4,296,138 ) $ 314,970 Denominator: Weighted average common shares outstanding - basic 9,439,025 9,520,285 9,459,272 9,440,368 Plus dilutive effect of potential common shares — — — 680,630 Weighted average common shares outstanding - diluted 9,439,025 9,520,285 9,459,272 10,120,998 Net income (loss) per share: Basic $ (0.34 ) $ (0.01 ) $ (0.45 ) $ 0.03 Diluted $ (0.34 ) $ (0.01 ) $ (0.45 ) $ 0.03 Diluted weighted average common shares outstanding for the six months ended June 30, 2017 includes 9,681 warrants and 670,949 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 June 30, Six Months Ended June 30, 2018 2017 2018 2017 Employee stock options 1,152,520 384,538 1,349,833 366,732 Warrants outstanding 51,003 — 51,003 — Total 1,203,523 384,538 1,400,836 366,732

Cash, Cash Equivalents and Shor

Cash, Cash Equivalents and Short-Term Investments	6 Months Ended
	Jun. 30, 2018
Cash And Cash Equivalents [Abstract]
Cash, Cash Equivalents and Short-Term Investments	Note 4. Cash, Cash Equivalents and Short-Term Investments The following tables show the Company’s cash and cash equivalents and short-term investments by significant investment category as of June 30, 2018 and December 31, 2017: June 30, 2018 Amortized Cost Gross Unrealized Losses Estimated Fair Value Cash and Cash Equivalents Short-Term Investments Cash $ 2,472,787 $ — $ 2,472,787 $ 2,472,787 $ — Level 1 (1): Money market funds 4,766,639 — 4,766,639 4,766,639 — U.S. treasury securities 2,500,905 (2,297 ) 2,498,608 — 2,498,608 Subtotal 7,267,544 (2,297 ) 7,265,247 4,766,639 2,498,608 Level 2 (2): Commercial paper 9,701,381 — 9,701,381 2,246,170 7,455,211 Corporate debt obligations 5,323,767 (2,059 ) 5,321,708 773,432 4,548,276 Repurchase agreements 3,000,329 — 3,000,329 3,000,329 — Asset-backed securities 4,319,154 (3,594 ) 4,315,560 — 4,315,560 Subtotal 22,344,631 (5,653 ) 22,338,978 6,019,931 16,319,047 Total $ 32,084,962 $ (7,950 ) $ 32,077,012 $ 13,259,357 $ 18,817,655 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 June 30, 2018: Less Than 12 Months Description of Securities Estimated Fair Value Unrealized Losses June 30, 2018 U.S. treasury securities $ 2,498,608 $ (2,297 ) Corporate debt obligations 4,548,276 (1,834 ) Asset-backed securities 4,315,560 (3,594 ) Total $ 11,362,444 $ (7,725 ) 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 June 30, 2018, the Company does not consider any of its investments to be other-than temporarily impaired. Contractual maturities of short-term investments as of June 30, 2018 are as follows: Estimated Fair Value Due within one year $ 18,817,655 Total $ 18,817,655

Property and Equipment

Property and Equipment	6 Months Ended
	Jun. 30, 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: June 30, December 31, 2018 2017 Lab equipment $ 2,311,966 $ 1,914,911 Computer equipment 169,366 169,366 Computer software 317,747 299,227 Furniture and fixtures 250,801 202,218 Tenant improvements 894,756 763,898 Other office equipment 121,615 63,825 4,066,251 3,413,445 Less accumulated depreciation (2,643,040 ) (2,376,585 ) $ 1,423,211 $ 1,036,860 Depreciation expense was $145,038 and $107,012 for the three months ended June 30, 2018 and 2017, respectively, and $266,455 and $222,459 for the six months ended June 30, 2018 and 2017, respectively.

Acquisitions

Acquisitions	6 Months Ended
	Jun. 30, 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 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. Sales associated with the acquired Antenna Plus assets was $1.9 million and $4.2 million for the three and six months ended June 30, 2018. Cost of goods sold associated with the acquired Antenna Plus assets was $0.8 million and $1.7 million for the three and six months ended June 30, 2018. Net income associated with the acquired Antenna Plus assets was $0.4 million and $1.1 million for the three and six months ended June 30, 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 June 30, Six Months Ended June 30, 2018 2017 2018 2017 Pro forma sales $ 14,971,682 $ 13,506,610 $ 28,276,779 $ 26,533,604 Pro forma income from operations $ (3,649,286 ) $ (130,412 ) $ (4,812,954 ) $ 680,581 Pro forma net income $ (3,190,347 ) $ (73,379 ) $ (4,296,138 ) $ 697,231 Skycross On December 17, 2015, the Company executed and entered into an asset purchase agreement for certain North American assets of Skycross, Inc. (Skycross), a manufacturer of advanced antenna and radio-frequency solutions. In addition to the $4.0 million paid up front, the purchase price also included a contingent consideration arrangement. The $1.0 million of contingent consideration is payable upon the later of (i) the expiration of the Transition Services Agreement between the Company and Skycross which defined transition services to be provided by Skycross to the Company and (ii) the date on which the Company received copies of third party approvals with respect to each customer and program that was purchased. The potential undiscounted amount of all future payments that could be required to be paid under the contingent consideration arrangement was between zero and $1.0 million. The fair value of the contingent consideration was estimated by applying the income approach. The income approach is based on estimating the value of the present worth of future net cash flows. During the three months ended June 30, 2018, the Company and Skycross came to an agreement that the Company would pay Skycross $375,000 to settle all outstanding balances between the parties, which included $1.0 million of deferred purchase price and $125,802 due to Skycross and $362,069 of accounts receivable from Skycross. The settlement with Skycross resulted in the recognition of a gain on deferred purchase price liability of $388,733 during the three and six months ended June 30, 2018 in the unaudited condensed statements of operations.

Intangible Assets

Intangible Assets	6 Months Ended
	Jun. 30, 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: June 30, 2018 Weighted Average Amortization Period (years) Gross Carrying Amount Accumulated Amortization Intangibles, Net Customer relationships 10 $ 4,830,000 $ 995,582 $ 3,834,418 Developed technologies 9 1,080,000 208,502 871,498 Tradename 3 120,000 46,667 73,333 Non-compete agreement 3 67,000 56,690 10,310 Total intangible assets, net 10 $ 6,097,000 $ 1,307,441 $ 4,789,559 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 $224,458 for the three months ended June 30, 2018 and 2017, respectively, and $338,692 and $321,804 for the six months ended June 30, 2018 and 2017, respectively. Estimated Future Amortization 2018 (remaining six months) $ 337,836 2019 655,052 2020 627,667 2021 598,420 2022 563,000 Thereafter 2,007,584 Total $ 4,789,559

Long-term Notes Payable (includ

Long-term Notes Payable (including current portion) and Line of Credit	6 Months Ended
	Jun. 30, 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 June 30, 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 required 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 was 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 June 30, 2018. 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 (5.00% as of June 30, 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 (5.00% as of June 30, 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 June 30, 2018 are as follows: Year ending: 2018 (remaining six months) $ 666,667 $ 666,667 The Company was in compliance with its financial covenants in the Amended Loan Agreement as of June 30, 2018.

Treasury Stock

Treasury Stock	6 Months Ended
	Jun. 30, 2018
Equity [Abstract]
Treasury Stock	Note 9. Treasury Stock In August 2017, the Company’s Board of Directors (the Board) 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 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 share repurchase program will be returned to the status of authorized but unissued shares of common stock. On August 7, 2018, the Board approved an extension to the existing share repurchase program for an additional twelve month period ending August 14, 2019. During the three and six months ended June 30, 2018, the Company repurchased 64,360 and 150,528 shares of common stock, respectively, under the share repurchase program. These shares were repurchased at an average price per share of $8.79 per share, for a total cost of $1.3 million. As of June 30, 2018, the Company has repurchased a total of $2.6 million in common stock under the share repurchase program.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Note 10. Income Taxes The Company’s effective income tax rate was -2.08% and 5.13% for the six months ended June 30, 2018 and 2017, respectively. The variance from the U.S. federal statutory tax rate of 21% and 34% for the six months ended June 30, 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 June 30, 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.

Stockholders' Equity

Stockholders' Equity	6 Months Ended
	Jun. 30, 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 June 30, 2018 and December 31, 2017: June 30,     December Warrants issued and outstanding 51,003 51,003 Stock option awards issued and outstanding 1,955,875 1,203,627 Authorized for grants under the 2016 Equity Incentive Plan 123,989 633,052 Authorized for grants under the 2016 Employee Stock Purchase Plan 100,000 100,000 2,230,867 1,987,682 (1) Treasury stock in the amount of 285,528 and 135,000 as of June 30, 2018 and December 31, 2017, respectively, are excluded from the table above.

Stock Options

Stock Options	6 Months Ended
	Jun. 30, 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 963,800 9.88 7.79 Exercised (136,094 ) 2.20 1.43 Expired/Forfeited (75,458 ) 10.43 0.04 Balance at June 30, 2018 1,955,875 $ 8.66 6.73 Vested and exercisable at June 30, 2018 867,417 $ 7.07 3.76 Vested and expected to vest at June 30, 2018 1,955,875 $ 8.66 6.73 The weighted average grant date fair value of options granted during the six months ended June 30, 2018 and for the year ended December 31, 2017 was $3.98 and $6.02, respectively. For fully vested stock options, the aggregate intrinsic value as of June 30, 2018 and December 31, 2017 was $3,358,788 and $3,596,624, respectively. For stock options expected to vest, the aggregate intrinsic value as of June 30, 2018 and December 31, 2017 was $1,065,896 and $1,469,154, respectively. At June 30, 2018 and December 31, 2017, there was $3,777,271 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.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 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 $234,085 and $207,696 for the three months ended June 30, 2018 and 2017, respectively, and $467,032 and $391,310 for the six months ended June 30, 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 June 30, 2018 were as follows: Year ending: 2018 (remaining six months) $ 508,257 2019 832,039 2020 502,461 2021 134,529 2022 22,527 $ 1,999,813

Concentration of Credit Risk

Concentration of Credit Risk	6 Months Ended
	Jun. 30, 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 and six months ended June 30, 2018 and 2017 and customers that accounted for 10% or more of total trade accounts receivable at June 30, 2018 and 2017. Three Months Ended June 30, Six Months Ended      2018 2017 2018 2017 Percentage of net revenue Customer A 37 % 20 % 34 % 21 % Customer B 10 9 7 11 Customer C 7 14 7 14 As of June 30, 2018 2017 Percentage of gross trade accounts receivable Customer A 21 % 14 % Customer B 19 13 Customer C 2 17 (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 June 30, Six Months Ended June 30, 2018 2017 2018 2017 Percentage of net revenue China 76 % 65 % 70 % 68 % Other Asia 4 13 6 13 North America 15 18 18 14 Europe 5 4 6 5 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 and six months ended June 30, 2018, primarily all of the Company’s products were manufactured by two vendors in China and by the Company’s facilities in Arizona. During the three and six months ended June 30, 2017, all of the Company’s products were manufactured by two vendors in China and by the Company’s facilities in Wisconsin and Arizona.

Termination Costs

Termination Costs	6 Months Ended
	Jun. 30, 2018
Restructuring And Related Activities [Abstract]
Termination Costs	Note 15. Termination Costs On June 30, 2018, the Company terminated a marketing-related agreement to better align its sales and marketing efforts with its longer-term growth objectives and near-to-intermediate term profitability goals. In consideration of terminating the agreement, the Company paid $1.3 million in termination costs. The termination costs were included in sales and marketing expense on the unaudited condensed statements of operations for the three and six months ended June 30, 2018. On May 2, 2018, Charles Myers, the Company’s Chief Executive Officer, President and member of 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, upon a general release of claims as set forth in his employment agreement, received a lump sum cash payment in the amount of $484,000; a lump sum cash payment in the amount of $3,200 covering twelve months of monthly premiums for disability insurance under the Company’s disability insurance plan; a lump sum cash payment in the amount of $20,000 covering certain other employment benefits; the acceleration of all his unvested options for a total of 282,994 shares 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 recognized stock compensation expense of $1.2 million for the three months ended June 30, 2018. Mr. Myer’s costs were included in general and administrative expense on the unaudited condensed statements of operations for the three and six months ended June 30, 2018. As of June 30, 2018, the remaining amount payable to Mr. Myers is $28,038. On April 2, 2018, Glenn Selbo, the Company’s 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 continue to vest during the term of his consulting services. In connection with his resignation, Mr. Selbo, upon a general release of claims as set forth in his employment agreement, received a lump sum 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 his last day of employment. In connection with Mr. Selbo’s resignation, the Company recognized stock compensation expense of $44,267. Mr. Selbo’s costs were included in sales and marketing expense on the unaudited condensed statements of operations for the three and six months ended June 30, 2018. As of June 30, 2018, there are no further amounts owed to Mr. Selbo.

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2018
Subsequent Events [Abstract]
Subsequent Events	Note 16. Subsequent Events On August 7, 2018, the Board approved an extension to the existing share repurchase program for an additional twelve month period ending August 14, 2019, which allows for the repurchase of up to $7.0 million of shares of its common stock, of which approximately $2.6 million has been repurchased through the date of this filing.

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 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 and six months ended June 30, 2018 and June 30, 2017, and the balance sheet data as of June 30, 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 interim 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 six months ended June 30, 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 June 30, 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 statements 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 (FIFO) method. Any adjustments to reduce the cost of inventories to their net realizable value are recognized in earnings in the current period. As of June 30, 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 June 30, 2018, there is no provision for excess and obsolete inventories.
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Accumulated other 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 June 30, 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) In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers

Net Income (Loss) Per Share (Ta

Net Income (Loss) Per Share (Tables)	6 Months Ended
	Jun. 30, 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 June 30, Six Months Ended June 30, 2018 2017 2018 2017 Numerator: Net income (loss) $ (3,190,347 ) $ (70,121 ) $ (4,296,138 ) $ 314,970 Denominator: Weighted average common shares outstanding - basic 9,439,025 9,520,285 9,459,272 9,440,368 Plus dilutive effect of potential common shares — — — 680,630 Weighted average common shares outstanding - diluted 9,439,025 9,520,285 9,459,272 10,120,998 Net income (loss) per share: Basic $ (0.34 ) $ (0.01 ) $ (0.45 ) $ 0.03 Diluted $ (0.34 ) $ (0.01 ) $ (0.45 ) $ 0.03
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 June 30, Six Months Ended June 30, 2018 2017 2018 2017 Employee stock options 1,152,520 384,538 1,349,833 366,732 Warrants outstanding 51,003 — 51,003 — Total 1,203,523 384,538 1,400,836 366,732

Cash, Cash Equivalents and Sh26

Cash, Cash Equivalents and Short-Term Investments (Tables)	6 Months Ended
	Jun. 30, 2018
Cash And Cash Equivalents [Abstract]
Schedule of Cash and Cash Equivalents and Short-Term Investments by Significant Investment Category	The following tables show the Company’s cash and cash equivalents and short-term investments by significant investment category as of June 30, 2018 and December 31, 2017: June 30, 2018 Amortized Cost Gross Unrealized Losses Estimated Fair Value Cash and Cash Equivalents Short-Term Investments Cash $ 2,472,787 $ — $ 2,472,787 $ 2,472,787 $ — Level 1 (1): Money market funds 4,766,639 — 4,766,639 4,766,639 — U.S. treasury securities 2,500,905 (2,297 ) 2,498,608 — 2,498,608 Subtotal 7,267,544 (2,297 ) 7,265,247 4,766,639 2,498,608 Level 2 (2): Commercial paper 9,701,381 — 9,701,381 2,246,170 7,455,211 Corporate debt obligations 5,323,767 (2,059 ) 5,321,708 773,432 4,548,276 Repurchase agreements 3,000,329 — 3,000,329 3,000,329 — Asset-backed securities 4,319,154 (3,594 ) 4,315,560 — 4,315,560 Subtotal 22,344,631 (5,653 ) 22,338,978 6,019,931 16,319,047 Total $ 32,084,962 $ (7,950 ) $ 32,077,012 $ 13,259,357 $ 18,817,655 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 June 30, 2018: Less Than 12 Months Description of Securities Estimated Fair Value Unrealized Losses June 30, 2018 U.S. treasury securities $ 2,498,608 $ (2,297 ) Corporate debt obligations 4,548,276 (1,834 ) Asset-backed securities 4,315,560 (3,594 ) Total $ 11,362,444 $ (7,725 )
Schedule of Contractual Maturities of Short-term Investments	Contractual maturities of short-term investments as of June 30, 2018 are as follows: Estimated Fair Value Due within one year $ 18,817,655 Total $ 18,817,655

Property and Equipment (Tables)

Property and Equipment (Tables)	6 Months Ended
	Jun. 30, 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: June 30, December 31, 2018 2017 Lab equipment $ 2,311,966 $ 1,914,911 Computer equipment 169,366 169,366 Computer software 317,747 299,227 Furniture and fixtures 250,801 202,218 Tenant improvements 894,756 763,898 Other office equipment 121,615 63,825 4,066,251 3,413,445 Less accumulated depreciation (2,643,040 ) (2,376,585 ) $ 1,423,211 $ 1,036,860

Acquisitions (Tables)

Acquisitions (Tables) - Antenna Plus	6 Months Ended
	Jun. 30, 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 June 30, Six Months Ended June 30, 2018 2017 2018 2017 Pro forma sales $ 14,971,682 $ 13,506,610 $ 28,276,779 $ 26,533,604 Pro forma income from operations $ (3,649,286 ) $ (130,412 ) $ (4,812,954 ) $ 680,581 Pro forma net income $ (3,190,347 ) $ (73,379 ) $ (4,296,138 ) $ 697,231

Intangible Assets (Tables)

Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Acquired Intangible Assets	The following is a summary of the Company’s acquired intangible assets: June 30, 2018 Weighted Average Amortization Period (years) Gross Carrying Amount Accumulated Amortization Intangibles, Net Customer relationships 10 $ 4,830,000 $ 995,582 $ 3,834,418 Developed technologies 9 1,080,000 208,502 871,498 Tradename 3 120,000 46,667 73,333 Non-compete agreement 3 67,000 56,690 10,310 Total intangible assets, net 10 $ 6,097,000 $ 1,307,441 $ 4,789,559 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 $224,458 for the three months ended June 30, 2018 and 2017, respectively, and $338,692 and $321,804 for the six months ended June 30, 2018 and 2017, respectively. Estimated Future Amortization 2018 (remaining six months) $ 337,836 2019 655,052 2020 627,667 2021 598,420 2022 563,000 Thereafter 2,007,584 Total $ 4,789,559

Long-term Notes Payable (incl30

Long-term Notes Payable (including current portion) and Line of Credit (Tables)	6 Months Ended
	Jun. 30, 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 June 30, 2018 are as follows: Year ending: 2018 (remaining six months) $ 666,667 $ 666,667

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	6 Months Ended
	Jun. 30, 2018
Class Of Stock Disclosures [Abstract]
Schedule of Common Stock Reserved for Future Issuance	The following common stock is reserved for future issuance at June 30, 2018 and December 31, 2017: June 30,     December Warrants issued and outstanding 51,003 51,003 Stock option awards issued and outstanding 1,955,875 1,203,627 Authorized for grants under the 2016 Equity Incentive Plan 123,989 633,052 Authorized for grants under the 2016 Employee Stock Purchase Plan 100,000 100,000 2,230,867 1,987,682 (1) Treasury stock in the amount of 285,528 and 135,000 as of June 30, 2018 and December 31, 2017, respectively, are excluded from the table above.

Stock Options (Tables)

Stock Options (Tables)	6 Months Ended
	Jun. 30, 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 963,800 9.88 7.79 Exercised (136,094 ) 2.20 1.43 Expired/Forfeited (75,458 ) 10.43 0.04 Balance at June 30, 2018 1,955,875 $ 8.66 6.73 Vested and exercisable at June 30, 2018 867,417 $ 7.07 3.76 Vested and expected to vest at June 30, 2018 1,955,875 $ 8.66 6.73

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 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 June 30, 2018 were as follows: Year ending: 2018 (remaining six months) $ 508,257 2019 832,039 2020 502,461 2021 134,529 2022 22,527 $ 1,999,813

Concentration of Credit Risk (T

Concentration of Credit Risk (Tables)	6 Months Ended
	Jun. 30, 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 and six months ended June 30, 2018 and 2017 and customers that accounted for 10% or more of total trade accounts receivable at June 30, 2018 and 2017. Three Months Ended June 30, Six Months Ended      2018 2017 2018 2017 Percentage of net revenue Customer A 37 % 20 % 34 % 21 % Customer B 10 9 7 11 Customer C 7 14 7 14 As of June 30, 2018 2017 Percentage of gross trade accounts receivable Customer A 21 % 14 % Customer B 19 13 Customer C 2 17
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 June 30, Six Months Ended June 30, 2018 2017 2018 2017 Percentage of net revenue China 76 % 65 % 70 % 68 % Other Asia 4 13 6 13 North America 15 18 18 14 Europe 5 4 6 5

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Details)	6 Months Ended
	Jun. 30, 2018Segment
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Number of operating segments	1

Net Income (Loss) Per Share - S

Net Income (Loss) Per Share - Summary of Computation of Net Income (Loss) Per Share (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Numerator:
Net income (loss)	$ (3,190,347)	$ (70,121)	$ (4,296,138)	$ 314,970
Denominator:
Basic	9,439,025	9,520,285	9,459,272	9,440,368
Plus dilutive effect of potential common shares				680,630
Weighted average common shares outstanding - diluted	9,439,025	9,520,285	9,459,272	10,120,998
Net income (loss) per share:
Basic	$ (0.34)	$ (0.01)	$ (0.45)	$ 0.03
Diluted	$ (0.34)	$ (0.01)	$ (0.45)	$ 0.03

Net Income (Loss) Per Share - A

Net Income (Loss) Per Share - Additional Information (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net Income (Loss) Per Share [Line Items]
Diluted weighted average common shares outstanding	9,439,025	9,520,285	9,459,272	10,120,998
Warrant
Net Income (Loss) Per Share [Line Items]
Diluted weighted average common shares outstanding				9,681
Options Outstanding
Net Income (Loss) Per Share [Line Items]
Diluted weighted average common shares outstanding				670,949

Net Income (Loss) Per Share -38

Net Income (Loss) Per Share - Summary of Potentially Dilutive Securities (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 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	1,203,523	384,538	1,400,836	366,732
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	1,152,520	384,538	1,349,833	366,732
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		51,003

Cash, Cash Equivalents and Sh39

Cash, Cash Equivalents and Short-Term Investments - Schedule of Cash and Cash Equivalents and Short-term Investments by Significant Investment Category (Details) - USD ($)	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016
Cash And Cash Equivalents And Short Term Investments [Line Items]
Cash	$ 2,472,787	$ 3,040,696
Short term investments Gross Unrealized Losses	(7,950)	(16,907)
Short term investments	18,817,655	21,287,064
Cash and cash equivalents and Short term investments, Amortized Cost	32,084,962	36,330,039
Cash and cash equivalents and Short term investments, Estimated Fair Value	32,077,012	36,313,132
Cash and cash equivalents	13,259,357	15,026,068	$ 36,582,992	$ 45,161,403
Level 1
Cash And Cash Equivalents And Short Term Investments [Line Items]
Short term investments Gross Unrealized Losses	(2,297)	(5,540)
Cash equivalents and Short term investments, Estimated Fair Value	7,265,247	10,720,010
Cash equivalents and Short term investments, Amortized Cost	7,267,544	10,725,550
Level 2
Cash And Cash Equivalents And Short Term Investments [Line Items]
Cash equivalents	6,019,931	3,750,621
Short term investments Gross Unrealized Losses	(5,653)	(11,367)
Short term investments	16,319,047	18,801,805
Cash equivalents and Short term investments, Estimated Fair Value	22,338,978	22,552,426
Cash equivalents and Short term investments, Amortized Cost	22,344,631	22,563,793
Money Market Funds | Level 1
Cash And Cash Equivalents And Short Term Investments [Line Items]
Cash equivalents	4,766,639	8,234,751
Repurchase Agreements | Level 2
Cash And Cash Equivalents And Short Term Investments [Line Items]
Cash equivalents	3,000,329	3,000,233
US Treasury Securities | Level 1
Cash And Cash Equivalents And Short Term Investments [Line Items]
Short Term Investments Amortized Cost	2,500,905	2,490,799
Short term investments Gross Unrealized Losses	(2,297)	(5,540)
Short term investments	2,498,608	2,485,259
Commercial Paper | Level 2
Cash And Cash Equivalents And Short Term Investments [Line Items]
Cash equivalents	2,246,170
Short Term Investments Amortized Cost	9,701,381	9,716,093
Short term investments	7,455,211	9,716,093
Cash equivalents and Short term investments, Estimated Fair Value	9,701,381
Corporate Debt Securities | Level 2
Cash And Cash Equivalents And Short Term Investments [Line Items]
Cash equivalents	773,432
Short Term Investments Amortized Cost	5,323,767	6,829,191
Short term investments Gross Unrealized Losses	(2,059)	(9,414)
Short term investments	5,321,708	6,819,777
Asset-backed Securities | Level 2
Cash And Cash Equivalents And Short Term Investments [Line Items]
Cash equivalents		750,388
Short Term Investments Amortized Cost	4,319,154	3,018,276
Short term investments Gross Unrealized Losses	(3,594)	(1,953)
Short term investments	4,315,560	2,265,935
Cash equivalents and Short term investments, Estimated Fair Value	$ 4,315,560	$ 3,016,323

Cash, Cash Equivalents and Sh40

Cash, Cash Equivalents and Short-Term Investments - Summary of Short-term Investments with Unrealized Losses (Details)	Jun. 30, 2018USD ($)
Cash And Cash Equivalents And Short Term Investments [Line Items]
Less Than 12 Months, Estimated Fair Value	$ 11,362,444
Less Than 12 Months, Unrealized Losses.	(7,725)
US Treasury Securities
Cash And Cash Equivalents And Short Term Investments [Line Items]
Less Than 12 Months, Estimated Fair Value	2,498,608
Less Than 12 Months, Unrealized Losses.	(2,297)
Corporate Debt Securities
Cash And Cash Equivalents And Short Term Investments [Line Items]
Less Than 12 Months, Estimated Fair Value	4,548,276
Less Than 12 Months, Unrealized Losses.	(1,834)
Asset-backed Securities
Cash And Cash Equivalents And Short Term Investments [Line Items]
Less Than 12 Months, Estimated Fair Value	4,315,560
Less Than 12 Months, Unrealized Losses.	$ (3,594)

Cash, Cash Equivalents and Sh41

Cash, Cash Equivalents and Short-Term Investments - Schedule of Contractual Maturities of Short-term Investments (Details) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Investments Debt And Equity Securities [Abstract]
Due within one year	$ 18,817,655
Total	$ 18,817,655	$ 21,287,064

Property and Equipment - Additi

Property and Equipment - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Property Plant And Equipment [Line Items]
Depreciation expense	$ 145,038	$ 107,012	$ 266,455	$ 222,459
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

Property and Equipment - Schedu

Property and Equipment - Schedule of Property and Equipment (Details) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 4,066,251	$ 3,413,445
Less accumulated depreciation	(2,643,040)	(2,376,585)
Property and equipment, net	1,423,211	1,036,860
Lab Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	2,311,966	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	317,747	299,227
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Property and equipment, gross	250,801	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	$ 121,615	$ 63,825

Acquisitions - Additional Infor

Acquisitions - Additional Information (Details) - USD ($)	Apr. 27, 2017	Dec. 17, 2015	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Business Acquisition [Line Items]
Business acquisition, sales			$ 14,971,681	$ 13,013,143	$ 28,276,779	$ 24,265,560
Business acquisition, cost of goods sold			8,370,160	6,891,619	15,481,087	12,855,577
Net income (loss)			(3,190,347)	$ (70,121)	(4,296,138)	314,970
Business acquisition up front payment						$ 6,348,730
Payment of deferred purchase price outstanding amount					375,000
Business combination, gain on deferred purchase price liability			388,733		388,733
Antenna Plus
Business Acquisition [Line Items]
Total consideration paid in cash	$ 6,348,730
Business acquisition, sales			1,900,000		4,200,000
Business acquisition, cost of goods sold			800,000		1,700,000
Net income (loss)			400,000		$ 1,100,000
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.
Business acquisition up front payment	6,383,500
Accounts receivable	$ 584,390
Skycross, Inc.
Business Acquisition [Line Items]
Date of asset purchase agreement		Dec. 17, 2015
Business acquisition up front payment		$ 4,000,000
Contingent consideration arrangement		1,000,000	1,000,000
Business combination, contingent consideration arrangements, description					The $1.0 million of contingent consideration is payable upon the later of (i) the expiration of the Transition Services Agreement between the Company and Skycross which defined transition services to be provided by Skycross to the Company and (ii) the date on which the Company received copies of third party approvals with respect to each customer and program that was purchased.
Amount to be paid under contingent consideration arrangements, value, low		0
Amount to be paid under contingent consideration arrangements, value, high		$ 1,000,000
Accounts receivable			362,069		$ 362,069
Payment of deferred purchase price outstanding amount			375,000
Business combination, due to skycross			125,802		125,802
Business combination, gain on deferred purchase price liability			$ 388,733		$ 388,733

Acquisitions - Summary of Alloc

Acquisitions - Summary of Allocation of Purchase Price for Acquired Identifiable Assets, Liabilities Assumed and Goodwill (Details) - USD ($)	Apr. 27, 2017	Jun. 30, 2017	Jun. 30, 2018	Dec. 31, 2017
Consideration:
Cash		$ 6,348,730
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

Acquisitions - Summary of Unaud

Acquisitions - Summary of Unaudited Pro Forma Information (Details) - Antenna Plus - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Business Acquisition [Line Items]
Pro forma sales	$ 14,971,682	$ 13,506,610	$ 28,276,779	$ 26,533,604
Pro forma income from operations	(3,649,286)	(130,412)	(4,812,954)	680,581
Pro forma net income	$ (3,190,347)	$ (73,379)	$ (4,296,138)	$ 697,231

Intangible Assets - Summary of

Intangible Assets - Summary of Acquired Intangible Assets (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 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	1,307,441	968,749
Intangibles, Net	$ 4,789,559	$ 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	208,502	142,477
Intangibles, Net	$ 871,498	$ 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	995,582	754,082
Intangibles, Net	$ 3,834,418	$ 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	46,667	26,667
Intangibles, Net	$ 73,333	$ 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	56,690	45,523
Intangibles, Net	$ 10,310	$ 21,477

Intangible Assets - Additional

Intangible Assets - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization	$ 169,346	$ 224,458	$ 338,692	$ 321,804

Intangible Assets - Schedule of

Intangible Assets - Schedule of Estimated Annual Amortization of Intangible Assets (Details) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
2018 (remaining six months)	$ 337,836
2,019	655,052
2,020	627,667
2,021	598,420
2,022	563,000
Thereafter	2,007,584
Intangibles, Net	$ 4,789,559	$ 5,128,251

Long-term Notes Payable (incl50

Long-term Notes Payable (including current portion) and Line of Credit - Additional Information (Details)	Feb. 01, 2017USD ($)	Jan. 31, 2018USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2013USD ($)Installment	Jun. 30, 2018USD ($)	Dec. 31, 2017USD ($)
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. 1, 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. 1, 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
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 (5.00% as of June 30, 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 (5.00% as of June 30, 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%

Long-term Notes Payable (incl51

Long-term Notes Payable (including current portion) and Line of Credit - Schedule of Remaining Principal Payment (Details) - Loan Agreement With Silicon Valley Bank	Jun. 30, 2018USD ($)
Line Of Credit Facility [Line Items]
2018 (remaining six months)	$ 666,667
Long Term Debt	$ 666,667

Treasury Stock - Additional Inf

Treasury Stock - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	Aug. 07, 2018	Aug. 31, 2017	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2018	Jun. 30, 2018
Share Repurchase Program August 2017
Equity Class Of Treasury Stock [Line Items]
Common stock repurchase, value			$ 2.6		$ 2.6	$ 2.6
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 approved for repurchase, value		$ 7
Period of stock repurchase program		12 months
Stock repurchase, shares			64,360		150,528	285,528
Stock repurchase, average price per share					$ 8.79
Stock repurchase, cost					$ 1.3
Common Stock | Share Repurchase Program August 2017 | Subsequent Event
Equity Class Of Treasury Stock [Line Items]
Additional period of stock repurchase program	12 months

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Effective income tax rate	(2.08%)	5.13%
U.S. federal statutory tax rate	21.00%	34.00%

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Common Stock Reserved for Future Issuance (Details) - shares		Jun. 30, 2018	Dec. 31, 2017
Class Of Stock [Line Items]
Common stock, reserved for future issuance	[1]	2,230,867	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]	1,955,875	1,203,627
Authorized for Grants under the 2016 Equity Incentive Plan
Class Of Stock [Line Items]
Common stock, reserved for future issuance	[1]	123,989	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 285,528 and 135,000 as of June 30, 2018 and December 31, 2017, respectively, are excluded from the table above.

Stockholders' Equity - Schedu55

Stockholders' Equity - Schedule of Common Stock Reserved for Future Issuance (Parenthetical) (Details) - Common Stock - shares	3 Months Ended	5 Months Ended	6 Months Ended	11 Months Ended
	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2018	Jun. 30, 2018
Class Of Stock [Line Items]
Stock repurchase, shares		135,000
Share Repurchase Program August 2017
Class Of Stock [Line Items]
Stock repurchase, shares	64,360		150,528	285,528

Stock Options - Summary of Outs

Stock Options - Summary of Outstanding Stock Option Activity (Details) - $ / shares	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of shares, Beginning balance	1,203,627
Number of shares, Granted	963,800
Number of shares, Exercised	(136,094)
Number of shares, Expired/Forfeited	(75,458)
Number of shares, Ending balance	1,955,875	1,203,627
Number of shares, Vested and exercisable	867,417
Number of shares, Vested and expected to vest	1,955,875
Weighted average exercise price, Beginning balance	$ 7.06
Weighted average exercise price, Granted	9.88
Weighted average exercise price, Exercised	2.20
Weighted average exercise price, Expired/Forfeited	10.43
Weighted average exercise price, Ending balance	8.66	$ 7.06
Weighted average exercise price, Vested and exercisable	7.07
Weighted average exercise price, Vested and expected to vest	$ 8.66
Weighted average remaining contractual term	6 years 8 months 23 days	8 years 1 month 6 days
Weighted average remaining contractual term, Granted	7 years 9 months 14 days
Weighted average remaining contractual term, Exercised	1 year 5 months 4 days
Weighted average remaining contractual term, Expired/Forfeited	14 days
Weighted average remaining contractual term, Vested and exercisable	3 years 9 months 3 days
Weighted average remaining contractual term, Vested and expected to vest	6 years 8 months 23 days

Stock Options - Additional Info

Stock Options - Additional Information (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Weighted average grant-date fair value of options granted	$ 3.98	$ 6.02
Stock options vested aggregate intrinsic value	$ 3,358,788	$ 3,596,624
Stock options expected to vest aggregate intrinsic value	1,065,896	1,469,154
Total unrecognized compensation cost related to unvested stock options and restricted stock granted under the Company's equity plans	$ 3,777,271	$ 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

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - Office Space and Research Facilities Lease - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Commitment And Contingencies [Line Items]
Operating leases, rent expense	$ 234,085	$ 207,696	$ 467,032	$ 391,310
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

Commitments and Contingencies59

Commitments and Contingencies - Schedule Future Minimum Lease Payments Under Operating Leases (Detail)	Jun. 30, 2018USD ($)
Future minimum lease payment
2018 (remaining six months)	$ 508,257
2,019	832,039
2,020	502,461
2,021	134,529
2,022	22,527
Total future minimum lease payment	$ 1,999,813

Concentration of Credit Risk -

Concentration of Credit Risk - Additional Information (Details) - Vendor	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
China
Concentration Risk [Line Items]
Number of vendors	2	2	2	2
Customer Concentration Risk | Net Revenue
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%	10.00%
Customer Concentration Risk | Net Revenue | China
Concentration Risk [Line Items]
Concentration risk percentage	76.00%	65.00%	70.00%	68.00%
Customer Concentration Risk | Trade Accounts Receivable
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%	10.00%

Concentration of Credit Risk 61

Concentration of Credit Risk - Schedule of Concentration of Sales and Accounts Receivable (Details) - Customer Concentration Risk	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net Revenue
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%	10.00%
Net Revenue | Customer A
Concentration Risk [Line Items]
Concentration risk percentage	37.00%	20.00%	34.00%	21.00%
Net Revenue | Customer B
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	9.00%	7.00%	11.00%
Net Revenue | Customer C
Concentration Risk [Line Items]
Concentration risk percentage	7.00%	14.00%	7.00%	14.00%
Trade Accounts Receivable
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%	10.00%
Trade Accounts Receivable | Customer A
Concentration Risk [Line Items]
Concentration risk percentage	21.00%	14.00%
Trade Accounts Receivable | Customer B
Concentration Risk [Line Items]
Concentration risk percentage	19.00%	13.00%
Trade Accounts Receivable | Customer C
Concentration Risk [Line Items]
Concentration risk percentage	2.00%	17.00%

Concentration of Credit Risk 62

Concentration of Credit Risk - Schedule of Revenue by Geography (Details) - Customer Concentration Risk - Net Revenue	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%	10.00%
China
Concentration Risk [Line Items]
Concentration risk percentage	76.00%	65.00%	70.00%	68.00%
Other Asia
Concentration Risk [Line Items]
Concentration risk percentage	4.00%	13.00%	6.00%	13.00%
North America
Concentration Risk [Line Items]
Concentration risk percentage	15.00%	18.00%	18.00%	14.00%
Europe
Concentration Risk [Line Items]
Concentration risk percentage	5.00%	4.00%	6.00%	5.00%

Termination Costs - Additional

Termination Costs - Additional Information (Details) - USD ($)	Jun. 30, 2018	May 02, 2018	Apr. 02, 2018	Jun. 30, 2018	Jun. 30, 2018	Jun. 30, 2017
Restructuring Cost And Reserve [Line Items]
Stock compensation expense					$ 2,127,858	$ 249,888
Mr. Charles Myers
Restructuring Cost And Reserve [Line Items]
Severance amount paid in cash		$ 484,000
Unvested options shares		282,994
Number of monthly premiums for disability insurance		12 months
Remaining amount payable	$ 28,038			$ 28,038	28,038
Mr. Charles Myers | Other Employment Benefits
Restructuring Cost And Reserve [Line Items]
Severance amount paid in cash		$ 20,000
Mr. Charles Myers | Disability Insurance Plan
Restructuring Cost And Reserve [Line Items]
Severance amount paid in cash		$ 3,200
Mr. Selbo
Restructuring Cost And Reserve [Line Items]
Severance amount paid in cash			$ 150,000
Remaining amount payable	0			0	$ 0
Sales and Marketing Expense
Restructuring Cost And Reserve [Line Items]
Agreement termination costs	$ 1,300,000
Sales and Marketing Expense | Mr. Selbo
Restructuring Cost And Reserve [Line Items]
Stock compensation expense			$ 44,267
General and Administrative Expense | Mr. Charles Myers
Restructuring Cost And Reserve [Line Items]
Stock compensation expense				$ 1,200,000

Subsequent Events - Additional

Subsequent Events - Additional Information (Details) - Share Repurchase Program August 2018 - Subsequent Event $ in Millions	Aug. 07, 2018USD ($)
Subsequent Event [Line Items]
Common stock repurchase, value	$ 2.6
Common Stock
Subsequent Event [Line Items]
Stock approved for repurchase, value	$ 7
Period of stock repurchase program	12 months