PC Tel (PCTI) 10-K 13 Mar 20 2019 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2019	Mar. 12, 2020	Jun. 30, 2019
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Trading Symbol	PCTI
Entity Registrant Name	PC TEL INC
Entity Central Index Key	0001057083
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Well-known Seasoned Issuer	No
Entity Shell Company	false
Entity Small Business	true
Entity Emerging Growth Company	false
Title of 12(b) Security	Common Stock, $.001 Par Value Per Share
Security Exchange Name	NASDAQ
Entity File Number	000-27115
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	77-0364943
Entity Common Stock Shares Outstanding		18,772,240
Entity Public Float			$ 81,920,783
Document Annual Report	true
Document Transition Report	false
Entity Address, Address Line One	471 Brighton Drive
Entity Address, City or Town	Bloomingdale
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60108
City Area Code	630
Local Phone Number	372-6800
Documents Incorporated by Reference	Certain sections of the registrant's definitive proxy statement relating to its 2020 Annual Stockholders' Meeting to be held on May 27, 2020 are incorporated by reference into Part III of this Annual Report on Form 10-K. The Company intends to file its proxy statement within 120 days after the end of its fiscal year end to which this report relates.

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
ASSETS
Cash and cash equivalents	$ 7,094	$ 4,329
Short-term investment securities	32,556	30,870
Accounts receivable, net of allowances of $104 and $63 at December 31, 2019 and December 31, 2018, respectively	17,380	15,864
Inventories, net	11,935	12,848
Prepaid expenses and other assets	1,842	1,416
Total current assets	70,807	65,327
Property and equipment, net	11,985	12,138
Goodwill	3,332	3,332
Intangible assets, net	144	1,029
Other noncurrent assets	2,969	45
TOTAL ASSETS	89,237	81,871
LIABILITIES AND STOCKHOLDERS’ EQUITY
Accounts payable	3,190	6,083
Accrued liabilities	9,382	5,801
Total current liabilities	12,572	11,884
Long-term liabilities	3,315	381
Total liabilities	15,887	12,265
Stockholders’ equity:
Common stock, $0.001 par value, 100,000,000 shares authorized, 18,611,289 and 18,271,249 shares issued and outstanding at December 31, 2019 and December 31, 2018, respectively	19	18
Additional paid-in capital	133,954	133,859
Accumulated deficit	(60,305)	(64,055)
Accumulated other comprehensive loss	(318)	(216)
Total stockholders’ equity	73,350	69,606
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 89,237	$ 81,871

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Statement Of Financial Position [Abstract]
Allowance for accounts receivable	$ 104	$ 63
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	18,611,289	18,271,249
Common stock, shares outstanding	18,611,289	18,271,249

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
REVENUES	$ 90,617	$ 82,979
COST OF REVENUES	49,105	51,898
GROSS PROFIT	41,512	31,081
OPERATING EXPENSES:
Research and development	12,272	11,851
Sales and marketing	12,254	12,083
General and administrative	13,452	12,355
Amortization of intangible assets	219	418
Restructuring expenses	507	0
Total operating expenses	38,704	36,707
OPERATING INOME (LOSS)	2,808	(5,626)
Other income, net	982	564
INCOME (LOSS) BEFORE INCOME TAXES	3,790	(5,062)
Expense for income taxes	40	7,827
NET INCOME (LOSS)	$ 3,750	$ (12,889)
Net Income (Loss) per Share:
Basic	$ 0.21	$ (0.75)
Diluted	$ 0.21	$ (0.75)
Weighted Average Shares:
Basic	17,852,968	17,185,657
Diluted	18,158,659	17,185,657
Cash dividend per share	$ 0.22	$ 0.22

Consolidated Statements of Comp

Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
NET INCOME (LOSS)	$ 3,750	$ (12,889)
OTHER COMPREHENSIVE LOSS
Foreign currency translation adjustments	(102)	(270)
COMPREHENSIVE INCOME (LOSS)	$ 3,648	$ (13,159)

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid - In Capital [Member]	Retained Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
BALANCE at beginning of year at Dec. 31, 2017	$ 83,319	$ 18	$ 134,505	$ (51,258)	$ 54
Cumulative-effect adjustment resulting from adoption of ASU 2016-16 at Dec. 31, 2017	92			92
BALANCE at beginning of year, as adjusted at Dec. 31, 2017	83,411	18	134,505	(51,166)	54
Stock-based compensation expense	3,261	0	3,261	0	0
Issuance of shares for stock purchase and option plans	686	0	686	0	0
Cancellation of shares for payment of withholding tax	(578)	0	(578)	0	0
Dividends paid	(4,015)	0	(4,015)	0	0
Net income (loss)	(12,889)	0	0	(12,889)	0
Change in cumulative translation adjustment, net	(270)	0	0	0	(270)
BALANCE at end of year at Dec. 31, 2018	69,606	18	133,859	(64,055)	(216)
Stock-based compensation expense	4,133	0	4,133	0	0
Issuance of shares for stock purchase and option plans	1,183	1	1,182	0	0
Cancellation of shares for payment of withholding tax	(1,152)	0	(1,152)	0	0
Dividends paid	(4,068)	0	(4,068)	0	0
Net income (loss)	3,750	0	0	3,750	0
Change in cumulative translation adjustment, net	(102)	0	0	0	(102)
BALANCE at end of year at Dec. 31, 2019	$ 73,350	$ 19	$ 133,954	$ (60,305)	$ (318)

Consolidated Statement of Cash

Consolidated Statement of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Operating Activities:
Net income (loss) from continuing operations	$ 3,750	$ (12,889)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation	2,870	2,806
Intangible asset amortization	885	1,084
Stock-based compensation	4,133	3,261
Loss on disposal/sale of property and equipment	97	19
Restructuring costs	(33)	(39)
Bad debt provision	(2)	265
Deferred tax provision	0	7,817
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	(1,532)	2,362
Inventories	873	(336)
Prepaid expenses and other assets	385	198
Accounts payable	(2,841)	1,095
Income taxes payable	(22)	(3)
Other accrued liabilities	2,263	(1,657)
Deferred revenue	92	(40)
Net cash provided by operating activities	10,918	3,943
Investing Activities:
Capital expenditures	(2,263)	(2,754)
Proceeds from disposal of property and equipment	0	15
Purchase of investments	(48,245)	(44,591)
Redemptions/maturities of short-term investments	46,559	46,220
Net cash used in investing activities	(3,949)	(1,110)
Financing Activities:
Proceeds from issuance of common stock	1,183	686
Payment of withholding tax on stock-based compensation	(1,152)	(578)
Principle payments on finance leases	(99)	(125)
Cash dividends	(4,068)	(4,015)
Net cash used in financing activities	(4,136)	(4,032)
Net increase (decrease) in cash and cash equivalents	2,833	(1,199)
Effect of exchange rate changes on cash	(68)	(31)
Cash and cash equivalents, beginning of year	4,329	5,559
Cash and Cash Equivalents, End of Year	7,094	4,329
Other information:
Cash paid for income taxes	34	41
Cash paid for interest	9	11
Non-cash investing and financing information:
Decreases to additional paid-in capital related to restricted stock	(1,037)	(189)
Issuance of restricted common stock, net of cancellations	226	2,276
Recognition of ROU assets under operating leases	2,116	0
Recognition of ROU assets under finance leases	$ 118	$ 47

Organization and Summary of Sig

Organization and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization and Summary of Significant Accounting Policies	1. Organization and Summary of Significant Accounting Policies Nature of Operations PCTEL, Inc. (“PCTEL”, the “Company”, “we”, “ours”, and “us”) is a leading global supplier of wireless network antenna and testing solutions. PCTEL designs and manufactures precision antennas and provides test & measurement products that improve the performance of wireless networks globally. PCTEL products address three market segments: Enterprise Wireless, Intelligent Transportation, and Industrial Internet of Things (“IoT”). PCTEL antennas are deployed in small cells, enterprise Wi-Fi access points, fleet management and transit systems, and in network equipment and devices for the Industrial Internet of Things. PCTEL test & measurement tools improve the performance of wireless networks globally. Mobile operators, neutral hosts, and equipment manufacturers rely on PCTEL products to analyze, design, and optimize next generation wireless networks. Antenna Products PCTEL designs and manufactures precision antennas and offers in-house wireless product development for our customers, including design, testing, radio integration, and manufacturing capabilities. PCTEL antennas are deployed in small cells, enterprise Wi-Fi access points, fleet management and transit systems, and in equipment and devices for the IIoT. Revenue growth in these markets is driven by the increased use and complexity of wireless communications. Consistent with the Company’s mission to solve complex network engineering problems and in order to compete effectively in the antenna market, PCTEL maintains expertise in the following areas: radio frequency engineering, wireless network engineering, mechanical engineering, mobile antenna design, manufacturing, and product quality and testing. The Company seeks out product applications that command a premium for product design, performance, and customer service, and avoids commodity markets. Our antennas are primarily sold to original equipment manufacturer (“OEM”) providers where they are designed into the customers’ solution. Competition in the antenna markets is fragmented. Competitors include Airgain, Amphenol, Laird, Panorama, and Taoglas. Test & Measurement Products PCTEL provides RF test & measurement tools that improve the performance of wireless networks globally, with a focus on LTE, public safety, and 5G technologies. Network operators, neutral hosts, and equipment manufacturers rely on our scanning receivers and testing solutions to analyze, design, and optimize next generation wireless networks. Revenue growth in this market is driven by the implementation and roll out of new wireless technology standards (i.e. 3G to 4G, 4G to 5G). Consistent with our mission to solve complex network engineering problems and in order to compete effectively in the RF test & measurement market, PCTEL maintains expertise in the following areas: radio frequency engineering, digital signal process (“DSP”) engineering, wireless network engineering, mechanical engineering, manufacturing, and product quality and testing. The Company’s test equipment is sold directly to wireless carriers or to OEMs who integrate its products into their solutions which are then sold to wireless carriers. Competitors for the Company’s test tool products include OEMs such as Anritsu, Berkley Varitronics, Rohde and Schwarz, and Viavi. Basis of Consolidation These consolidated financial statements include the accounts of the Company and its subsidiaries. All intercompany accounts and transactions have been eliminated. Use of Estimates The preparation of financial statements in conformity with generally accepted accounting principles in the U.S. 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 periods reported. Actual results could differ from those estimates. Foreign Operations The Company is exposed to foreign currency fluctuations due to its foreign operations and because products are sold internationally. The functional currency for the Company’s foreign operations is predominantly the applicable local currency. Accounts of foreign operations are translated into U.S. dollars using the year-end exchange rate for assets and liabilities and average monthly rates for revenue and expense accounts. Adjustments resulting from translation are included in accumulated other comprehensive income (loss), a separate component of stockholders’ equity. Gains and losses resulting from other transactions originally in foreign currencies and then translated into U.S. dollars are included in the consolidated statements of operations. For the year ended December 31, 2019, foreign currency transactions resulted in foreign exchange gains of $0.1 million and for the year ended December 31, 2018, foreign currency transactions resulted in foreign exchange losses of $0.1 million. Foreign exchange gains and losses are recorded in other income in the consolidated statement of operations. Fair Value of Financial Instruments The Company follows accounting pronouncements for Fair Value Measurements and Disclosures, which establishes a fair value hierarchy that requires the Company to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, a three-tier fair value hierarchy has been established, which prioritizes the inputs used in measuring fair value as follows: Level 1: inputs are unadjusted quoted prices in active markets for identical assets or liabilities. Level 2: inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices in active markets for similar assets and liabilities, quoted prices for identical or similar assets or liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of assets or liabilities. Level 3: unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Cash equivalents are measured at fair value and investments are recognized at amortized cost in the Company’s financial statements. Accounts receivable and other investments are financial assets with carrying values that approximate fair value due to the short-term nature of these assets. Accounts payable is a financial liability with a carrying value that approximates fair value due to the short-term nature of these liabilities. Cash and Cash Equivalents and Investments The Company’s cash and cash equivalents and investments consist of the following: December 31, December 31, 2019 2018 Cash $ 5,604 $ 1,485 Cash equivalents 1,490 2,844 Short-term investments 32,556 30,870 $ 39,650 $ 35,199 Cash and Cash Equivalents At December 31, 2019 and 2018, cash and cash equivalents included bank balances and investments with original maturities less than 90 days. At December 31, 2019 and 2018, the Company’s cash equivalents were invested in highly liquid AAA rated money market funds that are required to comply with Rule 2a-7 under the Investment Company Act of 1940. Such funds utilize the amortized cost method of accounting, seek to maintain a constant $1.00 per share price, and are redeemable upon demand. The Company restricts its investments in AAA money market funds to those invested 100% in either short-term U.S. Government Agency securities or bank repurchase agreements collateralized by these same securities. The fair values of these money market funds are established through quoted prices in active markets for identical assets (Level 1 inputs). The cash in the Company’s U.S. banks is insured by the Federal Deposit Insurance Corporation up to the insurable limit of $250. At December 31, 2019, the Company had $2.1 million of cash in bank accounts in China. The Company’s cash in these foreign bank accounts is not insured. As of December 31, 2019, the Company has no intentions of repatriating the cash in its foreign bank accounts in China. If the Company decides to repatriate the cash in the foreign bank accounts, it may experience difficulty in doing so in a timely manner. The Company may also be exposed to foreign currency fluctuations and taxes if it repatriates these funds. At December 31, 2018, the Company had $0.6 million of cash in bank accounts in China and $0.2 million of cash in bank accounts in Israel. The Company completed the closure of its Israel subsidiary during the fourth quarter 2018 and repatriated the remaining cash of $0.2 million during the second quarter of 2019. Investments At December 31, 2019, the Company’s short-term investments consisted of A or higher rated corporate bonds and certificates of deposit. At December 31, 2018, the Company’s short-term investments consisted of U.S. government agency bonds, A or higher rated corporate bonds and certificates of deposit. All of the investments at December 31, 2019 and 2018 were classified as held-to-maturity. Cash equivalents and Level 1 and Level 2 investments measured at fair value were as follows: December 31, 2019 December 31, 2018 Level 1 Level 2 Total Level 1 Level 2 Total Cash equivalents: Corporate bonds $ 0 $ 708 $ 708 $ 0 $ 1,156 $ 1,156 Money market funds 782 0 782 1,688 0 1,688 Total Cash Equivalents $ 782 $ 708 $ 1,490 $ 1,688 $ 1,156 $ 2,844 Investments: Corporate bonds 0 28,710 28,710 0 21,583 21,583 US government agency bonds 0 0 0 0 5,671 5,671 Certificates of deposit 3,846 0 3,846 3,616 0 3,616 Total Investments $ 3,846 $ 28,710 $ 32,556 $ 3,616 $ 27,254 $ 30,870 Cash equivalents and Investments - book value $ 4,628 $ 29,418 $ 34,046 $ 5,304 $ 28,410 $ 33,714 Unrealized gains (losses) 1 (11 ) (10 ) 0 (21 ) (21 ) Cash equivalents and Investments - fair value $ 4,629 $ 29,407 $ 34,036 $ 5,304 $ 28,389 $ 33,693 The Company categorizes its financial instruments within a fair value hierarchy according to accounting guidance for fair value. The fair value hierarchy is described under the Fair Value of Financial Instruments in Note 1. For the Level 2 investments, the Company uses quoted prices of similar assets in active markets. There were no Level 3 investments at December 31, 2019 or 2018. The fair values in the table above reflect net unrealized losses of $10 and $21 at December 31, 2019 and December 31, 2018, respectively. Accounts Receivable and Allowance for Doubtful Accounts Accounts receivable are recorded at invoiced amount with standard net terms for most customers that range between 30 and 90 days. The Company extends credit to its customers based on an evaluation of a company’s financial condition and collateral is generally not required. The Company maintains an allowance for doubtful accounts for estimated uncollectible accounts receivable. The allowance is based on the Company’s assessment of known delinquent accounts, historical experience, and other currently available evidence of the collectability and the aging of accounts receivable. The Company’s allowance for doubtful accounts was $0.1 million at December 31, 2019 and 2018, respectively. The provision for doubtful accounts is included in sales and marketing expense in the consolidated statements of operations. Inventories Inventories are stated at the lower of cost or net realizable value and include material, labor and overhead costs using the first-in, first-out method of costing. Inventories as of December 31, 2019 and 2018 were composed of raw materials, work-in-process, and finished goods. The Company had consigned inventory of $0.3 million and $0.9 million at December 31, 2019 and 2018, respectively. The Company records allowances to reduce the value of inventory to the lower of cost or market, including allowances for excess and obsolete inventory. Reserves for excess inventory are calculated based on the Company’s estimate of inventory in excess of normal and planned usage. Obsolete reserves are based on the Company’s identification of inventory where carrying value is above net realizable value. The allowance for inventory losses was $3.4 million and $3.3 million as of December 31, 2019 and 2018, respectively. Inventories consisted of the following: December 31, 2019 December 31, 2018 Raw materials $ 6,502 $ 7,023 Work in process 913 1,388 Finished goods 4,520 4,437 Inventories, net $ 11,935 $ 12,848 Prepaid and Other Current Assets Prepaid assets are stated at cost and are amortized over the useful lives (up to one year) of the assets. Property and Equipment Property and equipment are stated at cost and are depreciated using the straight-line method over the estimated useful lives of the assets. The Company depreciates computer equipment and software license over three to five years, office equipment, manufacturing and test equipment and motor vehicles over five years, furniture and fixtures over seven years, and buildings over 30 years. Leasehold improvements are amortized over the shorter of the corresponding lease term or useful life. Depreciation expense and gains and losses on the disposal of property and equipment are included in cost of sales and operating expenses in the consolidated statements of operations. Maintenance and repairs are expensed as incurred. Property and equipment consisted of the following: December 31, 2019 December 31, 2018 Building $ 6,389 $ 6,351 Computers and office equipment 9,847 10,963 Manufacturing and test equipment 14,192 13,573 Furniture and fixtures 1,314 1,318 Leasehold improvements 2,850 1,529 Motor vehicles 20 20 Total property and equipment 34,612 33,754 Less: Accumulated depreciation and amortization (24,397 ) (23,386 ) Land 1,770 1,770 Property and equipment, net $ 11,985 $ 12,138 Depreciation and amortization expense were approximately $2.9 million and $2.8 million for the years ended December 31, 2019 and 2018, respectively. Amortization for capital leases is included in depreciation and amortization expense. See Note 7 for information related to finance leases. Liabilities Accrued liabilities consisted of the following: December 31, 2019 December 31, 2018 Short-term incentive plan $ 2,553 $ 0 Payroll and other employee benefits 1,605 1,409 Inventory receipts 1,431 1,396 Paid time off 855 936 Leasehold improvements 702 0 Warranties 444 339 Operating leases 282 0 Professional fees and contractors 246 346 Deferred revenues 241 149 Employee stock purchase plan 228 343 Real estate taxes 152 148 Customer refunds for estimated returns 147 154 Income and sales taxes 133 186 Finance leases 77 91 Restructuring 45 33 Other 241 271 Total $ 9,382 $ 5,801 Long-term liabilities consisted of the following: December 31, 2019 December 31, 2018 Operating leases $ 3,021 $ 0 Finance leases 164 132 Deferred revenue 119 87 Other 11 162 Total $ 3,315 $ 381 Revenue Recognition The Company sells antenna products and test & measurement products. All of the Company’s revenue relates to contracts with customers. The Company’s accounting contracts are from purchase orders or purchase orders combined with purchase agreements. The majority of the Company’s revenue is recognized on a “point-in-time” basis and a nominal amount of revenue is recognized “over time”. For the sale of antenna products and test & measurement products, the Company satisfies its performance obligations generally at the time of shipment, or upon delivery based on the contractual terms with its customers. For products shipped on consignment, the Company recognizes revenue upon customer delivery from the consignment location. For its test & measurement software tools, the Company has a performance obligation to provide software maintenance and support for one year. The Company recognizes revenues for the maintenance and support over this period. The Company recognizes revenue for sales of its products when control transfers, which is predominantly upon shipment from its factory. For products shipped on consignment, the Company recognizes revenue upon delivery from the consignment location. The Company allows its major antenna product distributors to return product under specified terms and conditions and accrues for product returns. See Note 14 for additional information related to revenue policies. Research and Development Costs The Company expenses research and development costs as incurred. To date, the Company has expensed all software development costs related to research and development because the costs incurred subsequent to the products reaching technological feasibility were not significant. Advertising Costs Advertising costs are expensed in the period in which they are incurred. Advertising expense was $0.2 million and $0.1 million during the years ended December 31, 2019, and 2018, respectively. Income Taxes Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, and deferred tax assets are recognized for net operating losses and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Valuation allowances are provided against deferred tax assets, which are not likely to be realized. On a regular basis, management evaluates the recoverability of deferred tax assets and the need for a valuation allowance. The Company recognizes the effect of income tax positions only if those positions are more likely than not of being sustained. Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. On December 22, 2017, the United States federal government enacted the Tax Cuts and Jobs Act (“Tax Act”), marking a change from a worldwide tax system to a modified territorial tax system in the United States. As part of this change, the Tax Act, among other changes, provided for a transition tax on the accumulated unremitted foreign earnings and profits of the Company’s foreign subsidiaries (“Transition Tax”), a reduction of the U.S. federal corporate income tax rate from 34% to 21%, and an indefinite carryforward of net operating losses (“NOLs”) incurred in 2018 and future periods subject to an 80% annual limitation against future income. Deferred tax assets arise when the Company recognizes charges or expenses in the financial statements that will not be allowed as income tax deductions until future periods. The deferred tax assets also include unused tax net operating losses and tax credits that the Company is allowed to carryforward to future years. Accounting rules permit the Company to carry the deferred tax assets on the balance sheet at full value as long as it is more likely than not the deductions, losses, or credits will be used in the future. A valuation allowance must be recorded against a deferred tax asset if this test cannot be met. The Company had a full valuation allowance of $13.5 million at December 31, 2019 and of $14.5 million at December 31, 2018. See Note 5 for more information on the deferred tax valuation allowance. Sales and Value Added Taxes Taxes collected from customers and remitted to governmental authorities are presented on a net basis in cost of sales in the accompanying consolidated statements of operations. Shipping and Handling Costs Shipping and handling costs are included on a gross basis in cost of sales in the accompanying consolidated statements of operations. Goodwill The Company performs an annual impairment test of goodwill as of the end of the first month of the fourth fiscal quarter (October 31st), or at an interim date if an event occurs or if circumstances change that would indicate that an impairment loss may have been incurred. In performing the annual impairment tests, the Company may consider qualitative factors that would indicate possible impairment. A quantitative fair value assessment is also performed at the reporting unit level. If the fair value exceeds the carrying value, then goodwill is not impaired, and no further testing is performed. If the carrying value exceeds the fair value, the implied fair value of goodwill is then compared against the carrying value of goodwill to determine the amount of impairment. The process of evaluating the potential impairment of goodwill is subjective because it requires the use of estimates and assumptions in determining a reporting unit’s fair value. The Company calculates the fair value of each reporting unit by using the income approach based on the present value of future discounted cash flows. The discounted cash flow method requires the Company to use estimates and judgments about the future cash flows of the reporting units. Although the Company bases cash flow forecasts on assumptions that are consistent with plans and estimates the Company uses to manage the underlying reporting units, there is significant judgment in determining the cash flows attributable to these reporting units, including markets and market share, sales volumes and mix, research and development expenses, tax rates, capital spending, discount rate and working capital changes. Cash flow forecasts are based on reporting unit operating plans for the early years and business projections in later years. The Company believes the accounting estimate related to the valuation of goodwill is a critical accounting estimate because it requires the Company to make assumptions that are highly uncertain about the future cash flows of the reporting units. Changes in these estimates can have a material impact on the Company’s financial statements. The Company performed its annual goodwill test at October 31, 2019 and at October 31, 2018 for the goodwill of $3.3 million. The Company performed both a qualitative analysis of goodwill and a quantitative analysis. There were no triggering events from the qualitative analysis, and the fair value of the reporting unit was higher than its carrying value in the quantitative analysis. Based on the Company’s analysis, there was no impairment of goodwill as of the testing dates because the fair value of the reporting unit exceeded its carrying value by a significant margin. Long-lived and Definite-Lived Intangible assets The Company reviews definite-lived intangible assets, investments and other long-lived assets for impairment when events or changes in circumstances indicate that their carrying values may not be fully recoverable. This analysis differs from the Company’s goodwill analysis in that definite-lived intangible asset impairment is only deemed to have occurred if the sum of the forecasted undiscounted future cash flows related to the assets being evaluated is less than the carrying value of the assets. The estimate of long-term undiscounted cash flows includes long-term forecasts of revenue growth, gross margins, and operating expenses. All of these items require significant judgment and assumptions. There have been no impairments related to long-lived assets used for operations during the years ended December 31, 2019, and 2018. Recent Accounting Pronouncements In July 2019, the FASB issued ASU 2019-07, Codification Updates to SEC Sections. This ASU amends various SEC paragraphs pursuant to the issuance of SEC Final Rule Releases No. 33-10532, Disclosure Update and Simplification, and Nos. 33-10231 and 33-10442, Investment Company Reporting Modernization. One of the changes in the ASU requires a presentation of changes in stockholders’ equity in the form of a reconciliation, either as a separate financial statement or in the notes to the financial statements, for the current and comparative year-to-date interim periods. The Company presented changes in stockholders' equity as separate financial statements for the current and comparative year-to-date interim periods beginning on January 1, 2019. The additional elements of the ASU did not have a material impact on the Company's Consolidated Financial Statements. In August 2018, the FASB issued ASU 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. The amendments in this update align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). The accounting for the service element of a hosting arrangement that is a service contract is not affected by the amendments in this update. This guidance was effective for the Company on January 1, 2020. The adoption of ASU 2018-15 did not have a material impact on the consolidated financial statements. In October 2016, the FASB issued ASU 2016-16, Income Taxes (“Topic 740”): Intra-Entity Transfer of Assets Other than Inventory. Topic 740 requires an entity to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. The Company adopted Topic 740 on January 1, 2018 using the modified retrospective approach, and as a result recorded a deferred tax asset with a corresponding adjustment to retained earnings of $0.1 million associated with an intra-entity transfer of goodwill in 2009. The goodwill was transferred to the U.S. entity from a Canadian entity that was dissolved in 2009. In June 2016, the FASB issued Accounting Standards Update No. 2016-13 ("ASU 2016-13") regarding ASC Topic 326, "Financial Instruments - Credit Losses," which modifies the measurement of expected credit losses of certain financial instruments. The Company will be required to use a forward-looking expected credit loss model for accounts receivables, loans, and other financial instruments. The amendments were effective for the Company on January 1, 2020. Adoption of the standard will be applied using a modified retrospective approach. Adoption of ASU 2016-13 did not have a material impact on its consolidated financial statements. In February 2016, the FASB issued Accounting Standards Update (“ASU”) 2016-02, Leases (“Topic 842”), which amends existing guidance to require lessees to recognize assets and liabilities on the balance sheet for the rights and obligations created by long-term leases and to disclose additional quantitative and qualitative information about leasing arrangements. This ASU also provides clarification surrounding the presentation of the effects of leases in the statement of operations and statement of cash flows. The Company adopted this guidance on January 1, 2019. The Company commenced its assessment of Topic 842 in the second half of 2018 and developed a project plan to guide the implementation. The Company completed this project planning which it analyzed the ASU's impact on its leases, surveyed the Company's key employees, assessed the portfolio of leases, and established a future lease process to keep the lease accounting portfolio up to date. The Company also evaluated the key policy elections and considerations under the standard and completed the internal policy documentation to address the new standard requirements. The Company adopted this new guidance using the updated modified transition method allowed per ASU 2018-11 of Topic 842. Upon adoption on January 1, 2019, total assets and liabilities increased due to the recording of right-of-use assets of $1.5 million and lease liabilities of $1.6 million. See Note 7 for additional information and disclosures required by this new standard. In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers” (“Topic 606”) which introduced a new revenue recognition model in which an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Topic 606 defines a five-step process to achieve this core principle and, in doing so, more judgment and estimates may be required in connection with the revenue recognition process than were previously required under prior U.S. GAAP. Topic 606 also requires disclosures sufficient to enable users to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers, including qualitative and quantitative disclosures about contracts with customers, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. The FASB has also issued the following standards which clarify Topic 606 and have the same effective date as the original standard: ASU 2016-20, Technical Corrections and Improvements to Topic 606, ASU No. 2016-12, Narrow-Scope Improvements and Practical Expedients, ASU 2016-10, Identifying Performance Obligations and Licensing and ASU 2016-08, Principal versus Agent Considerations. The Company adopted Topic 606 on January 1, 2018 using the modified retrospective approach. The impact of the adoption of Topic 606 was not material to the consolidated financial statements. The majority of the Company’s revenue is recognized on a “point-in-time” basis and a nominal amount of the Company’s revenue is recognized “over time” under the new standard, which is consistent with the Company’s revenue recognition policy under the previous guidance.

Earnings (Loss) per Share

Earnings (Loss) per Share	12 Months Ended
	Dec. 31, 2019
Earnings Per Share [Abstract]
Earnings (Loss) per Share	The Company computes earnings per share data under two different disclosures, basic and diluted, for all periods in which consolidated statements of operations are presented. Basic earnings (loss) per share is computed by dividing net income (loss) by the weighted average number of shares of common stock outstanding, less shares subject to repurchase. Diluted earnings (loss) per share are computed by dividing net income by the weighted average number of common stock and common stock equivalents outstanding. Common stock equivalents consist of stock options using the treasury stock method. Common stock options are excluded from the computation of diluted earnings per share if their effect is anti-dilutive. The following table provides a reconciliation of the numerators and denominators used in calculating basic and diluted earnings per share: Years Ended December 31, 2019 2018 Basic Income (Loss) Per Share computation: Numerator: Net income (loss) $ 3,750 $ (12,889 ) Denominator: Common shares outstanding 17,852,968 17,185,657 Net Income (Loss) per common share - basic Net income (loss) $ 0.21 $ (0.75 ) Diluted Income (Loss) Per Share computation: Denominator: Common shares outstanding 17,852,968 17,185,657 Performance related awards 191,247 * Restricted shares subject to vesting 113,188 * Common stock option grants 1,256 * Total shares 18,158,659 17,185,657 Income (Loss) per common share - diluted Net income (loss) $ 0.21 $ (0.75 ) * As denoted by “*” in the table above, weighted average common stock option grants and restricted shares of 360,591 was excluded from the calculations of diluted net loss per share for the year ended December 31, 2018, since the effect was anti-dilutive.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	3. Goodwill and Other Intangible Assets Goodwill There were no changes to the goodwill of $3.3 million during 2019 or 2018. See the goodwill section of Note 1 for more information on the evaluation of goodwill. Intangible Assets The summary of other intangible assets, net is as follows: December 31, 2019 December 31, 2018 Accumulated Net Book Accumulated Net Book Cost Amortization Value Cost Amortization Value Customer contracts and relationships $ 16,880 $ 16,880 $ 0 $ 16,880 $ 16,880 $ 0 Patents and technology 10,114 10,003 111 10,114 9,336 778 Trademarks and trade names 4,834 4,801 33 4,834 4,607 227 Other 2,506 2,506 0 2,506 2,482 24 $ 34,334 $ 34,190 $ 144 $ 34,334 $ 33,305 $ 1,029 The Company amortizes intangible assets with finite lives on a straight-line basis over the estimated useful lives, which range from one to six years. In the Consolidated Statement of Operations, amortization expense was approximately $0.9 million for the year ended December 31, 2019, and $1.1 million for the year ended December 31, 2018. Amortization for technology assets is included in cost of revenues and amortization for all other intangible assets is included in operating expenses. For the year ended December 31, 2019, $0.2 million of the intangible asset amortization was included in operating expenses and $0.7 million was included in cost of revenues. For the year ended December 31, 2018, $0.4 million of the intangible asset amortization was included in operating expenses and $0.7 million was included in cost of goods revenues. The assigned lives and weighted average amortization periods by intangible asset category are summarized below: Intangible Assets Assigned Life Weighted Average Amortization Period Customer contracts and relationships 5 years 5.0 Patents and technology 5 to 6 years 5.1 Trademarks and trade names 5 to 6 years 5.6 Other 1 to 6 years 3.0 The Company’s amortization expense for intangible assets is scheduled through the first quarter 2020 as follows: Fiscal Year Amount 2020 $ 144

Restructuring

Restructuring	12 Months Ended
	Dec. 31, 2019
Restructuring And Related Activities [Abstract]
Restructuring	4. Restructuring The following table summarizes the Company’s restructuring accrual activity for the years ended December 31, 2019, and 2018: Severance Lease Termination Total Balance at January 1, 2018 $ 0 $ 116 $ 116 Payments made 0 (128 ) (128 ) Payments received 0 89 89 Balance at December 31, 2018 $ 0 $ 77 $ 77 Restructuring expense 507 0 507 Payments made (495 ) (143 ) (638 ) Payments received 0 99 99 Balance at December 31, 2019 $ 12 $ 33 $ 45 The restructuring liability is recorded on the balance sheet at December 31, 2019 and 2018 as follows: December 31, 2019 December 31, 2018 Accrued liabilities $ 45 $ 33 Long-term liabilities 0 44 $ 45 $ 77 China Restructuring On August 7, 2019 the Company’s Board of Directors approved a transition plan for the Company’s China manufacturing operations. In order to optimize the cost structure of the antenna product line, reduce fixed costs in China, and increase the Company’s competitiveness, it is transitioning high-volume manufacturing from its Tianjin, China facility to contract manufacturers in China and elsewhere. The Company expects the transition to be substantially completed by the end of the 2020 fiscal year (the “Transition Period”). For the year ended December 31, 2019, the Company incurred restructuring expenses of $0.5 million for employee severance and related benefits related to the separation of 84 employees. During 2020, the Company expects to reduce headcount in Tianjin by an additional 40 to 50 employees and estimates additional restructuring charges of approximately $0.4 million consisting of severance and other non-cash costs. Severance costs are paid from the Company’s cash in its China bank accounts Lease Termination In 2016, the Company exited from its Colorado office in order to consolidate facility space and in the second quarter 2017 the Company signed a sublease for the office space. The termination date for the lease and the sublease is October 2020. The following table summarizes the minimum lease payments and sublease payments under the lease agreements for the Colorado office: Lease Payments Lease Payments 92 Sublease Payments (59 ) 33

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	5. Income Taxes The domestic and foreign components of the income (loss) before expense for income taxes were as follows: Years Ended December 31, 2019 2018 Domestic $ 4,250 $ (5,033 ) Foreign (460 ) (29 ) $ 3,790 $ (5,062 ) The expense for income taxes consisted of the following: Years Ended December 31, 2019 2018 Current: Federal $ 0 $ 0 State 40 32 Foreign 0 (22 ) 40 10 Deferred: Federal 0 6,337 State 0 1,333 Foreign 0 147 0 7,817 Total $ 40 $ 7,827 A reconciliation of the expense for income taxes at the federal statutory rate compared to the expense at the effective tax rate is as follows: Years Ended December 31 2019 2018 Statutory federal income tax rate 21 % 21 % State income tax, net of federal benefit 7 % 4 % Tax effect of permanent differences 3 % -1 % Change in valuation allowance -25 % -182 % Effective state rate change to deferred tax assets -1 % 1 % Stock-based compensation shortfalls 3 % -2 % Research and development credits -8 % 4 % Other 1 % 0 % 1 % -155 % The Company recorded net income tax expense of $40 for the year ended December 31, 2019. The 2019 effective rate differed from the Federal rate of 21% primarily because the Company has a full valuation allowance on its deferred tax assets. The Company’s valuation allowance is due to the uncertainty regarding the utilization of the deferred tax assets. The Company recorded net income tax expense of $7.8 million for the year ended December 31, 2018. The 2018 effective tax rate differed from the Federal rate of 21% primarily because the Company recorded an adjustment to the valuation allowance of $9.2 million, consisting of $8.9 million for U.S. deferred tax assets and $0.3 million for China deferred tax assets. The adjustment to the valuation allowance reflected an increase to a full valuation allowance from a partial valuation allowance. The Company increased the valuation allowance for deferred tax assets due to uncertainty regarding the utilization of the deferred tax assets. On December 22, 2017, the United States federal government enacted the Tax Act, marking a change from a worldwide tax system to a modified territorial tax system in the United States. As part of this change, the Tax Act, among other changes, provided for a Transition Tax on the accumulated unremitted foreign earnings and profits of foreign subsidiaries, a reduction of the U.S. federal corporate income tax rate from 34% to 21%, and an indefinite carryforward of net operating losses (“NOL’s”) incurred in 2018 and future periods subject to an 80% annual limitation against future income. The Company increased the Transition Tax $0.1 million in the fourth quarter 2018 upon completion of its U.S. income tax return. The Tax Act also included global intangible low-taxed income (“GILTI”) provisions. Under the provisions, a U.S. shareholder of controlled foreign corporations (“CFCs”) is required to include in gross income the amount of its GILTI. Generally, the GILTI inclusion is the U.S. shareholder’s allocable share of certain income earned through its CFCs (“net CFC tested income”) in excess of a deemed 10% return on the shareholder’s allocable share of certain of the CFC’s depreciable, tangible assets less certain interest expense items (“net deemed tangible income return”). The Company elected to treat taxes due on future U.S. inclusions in taxable income related to GILTI as a current-period expense when incurred (the period cost method). The amount included for GILTI did not have a significant impact on the Company’s tax provision for the years ended December 31, 2019 or December 31, 2018. The Company recognizes all interest and penalties as income tax expense. There was no income tax expense related to interest and penalties for the years ended December 31, 2019 or 2018 Deferred Taxes Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. The net deferred tax accounts consist of the following: December 31, 2019 2018 Deferred Tax Assets: Net operating loss carryforwards $ 4,759 $ 5,725 Amortization 3,500 3,920 Federal, foreign, and state credits 2,086 1,812 Inventory reserves 1,159 982 Stock compensation 494 982 Deferred gain 870 875 Accrued vacation 220 240 Other 563 235 Gross deferred tax assets 13,651 14,771 Valuation allowance (13,490 ) (14,457 ) Net deferred tax asset 161 314 Deferred Tax Liabilities: Depreciation (161 ) (314 ) Net Deferred Tax Assets $ 0 $ 0 At December 31, 2019, the Company had gross deferred tax assets of $13.7 million, deferred tax liabilities of $0.2 million, and a valuation allowance of $13.5 million. The deferred tax assets consisted of domestic deferred tax assets of $13.1 million and foreign deferred tax assets of $0.5 million. At December 31, 2019, $3.5 million of the deferred tax asset is intangible assets acquired under purchase accounting which are amortized for tax purposes over 15 years, but for shorter periods under generally accepted accounting principles. At December 31, 2018, the Company had gross deferred tax assets of $14.8 million, deferred tax liabilities of $0.3 million, and a valuation allowance of $14.5 million. The net deferred tax assets at December 31, 2018 consisted of domestic net deferred tax assets of $14.2 million and foreign net deferred tax assets of $0.3 million. On a regular basis, the Company evaluates the recoverability of deferred tax assets and the need for a valuation allowance. Such evaluations involve the application of significant judgment. The Company considers multiple factors in its evaluation of the need for a valuation allowance. The Company’s net deferred tax assets consist of assets related to net operating losses and credits as well as assets related to timing differences. The Company’s net operating losses and credits have a finite life primarily based on the 20-year carryforward rule for federal net operating losses (NOLs) generated as of December 31, 2017. The timing differences have a ratable reversal pattern over 12 years. Under the new rules enacted with the Tax Act, tax losses incurred in 2018 and future periods will not expire, thereby extending the period by which the Company’s deferred tax assets can be realized. The Company has recorded pre-tax U.S. profit for the cumulative three-year period ending December 31, 2019 of $0.1 million. In accordance with ASC 740 “Accounting for Income Taxes” (“ASC 740”), the Company evaluates deferred income tax assets quarterly to determine if valuation allowances are required or should be adjusted. ASC 740 requires that companies assess whether valuation allowances should be established against their deferred tax assets based on consideration of all available evidence, both positive and negative, using a “more likely than not” standard. At December 31, 2019 and December 31, 2018, the Company had a full valuation allowance on its deferred tax assets. The Company generated book and tax income during 2019. However, the Company incurred significant losses in 2018 and is in a cumulative break-even position for the past three years. The Company’s performance versus the 2018 projections are considered significant negative evidence that is difficult to overcome on a “more likely than not” standard through objectively verifiable data. While the Company believes its financial outlook remains positive, under the accounting standards, objective verifiable evidence will have greater weight than subjective evidence such as the Company’s projections for future growth. Based on an evaluation in accordance with the accounting standards, as of December 31, 2019, the Company has a valuation allowance of $13.1 million which was recorded against the net U.S. deferred tax assets and a valuation allowance of $0.5 million has been recorded against the net China deferred tax assets in order to measure the deferred tax assets that are more likely than not to be realized based on the weight of all the available evidence. Until an appropriate level of profitability is attained, the Company expects to maintain a full valuation allowance on its U.S. net deferred tax assets, and China net deferred tax assets. Any U.S. or China tax benefits or tax expense recorded on its consolidated statement of operations will be offset with a corresponding valuation allowance until such time that the Company changes its determination related to the realization of deferred tax assets. In the event that the Company changes its determination as to the amount of deferred tax assets that can be realized, the Company will adjust its valuation allowance with a corresponding impact to the provision for income taxes in the period in which such a determination is made. The analysis that the Company prepared to determine the valuation allowance required significant judgment and assumptions regarding future market conditions, as well as forecasts for profits, taxable income, and taxable income by jurisdiction. Due to the sensitivity of the analysis, changes to the assumptions in subsequent periods could have a material effect on the valuation allowance. Accounting for Uncertainty for Income Taxes A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows: December 31, 2019 2018 Beginning of period $ 730 $ 700 Addition related to tax positions in current year 45 30 Reversals for uncertain tax positions (16 ) 0 End of period $ 759 $ 730 Because the Company has a full valuation allowance against its deferred tax assets, the reversal of these unrecognized tax benefits would have no impact on its effective tax rate. The Company does not anticipate that its unrecognized tax benefits will significantly increase or decrease within the next twelve months. Audits The Company and its subsidiaries file income tax returns in the U.S. and various foreign jurisdictions. The Company’s U.S. federal tax returns remain subject to examination for 2017 and subsequent periods. The Company’s state tax returns remain subject to examination for 2015 and subsequent periods. The Company’s foreign tax returns in China remain subject to examination for 2011 and subsequent periods. Summary of Carryforwards At December 31, 2019, the Company has a federal net operating loss carryforward of $9.0 million that expires between 2031 and 2037 and a Federal net operating loss carryforward of $8.1 million with no expiration. The Company has state net operating loss carryforwards of $17.8 million that expire between 2021 and 2038. Additionally, the Company has $1.3 million of federal research credits that expire between 2030 and 2039 and $1.5 million of state research credits with no expiration. The Company has a China net operating loss carryforward of $0.1 million that expires in 2025 and of China research credits of $0.2 million that expire between 2024 and 2025. Investment in Foreign Operations For the Company’s subsidiary in China, it has recorded income tax related to the deemed dividend of earnings. The Company considers such earnings permanently reinvested. Upon repatriation of these earnings, the Company would be subject to local withholding taxes.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2019
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	6. Commitments and Contingencies Warranty Reserve and Sales Returns The Company allows its major distributors and certain other customers to return unused product under specified terms and conditions. The Company accrues for product returns based on historical sales and return trends. The refund liability was $0.1 million and $0.2 million at December 31, 2019 and 2018, respectively, and is included in other accrued liabilities in the accompanying consolidated balance sheets. The Company offers repair and replacement warranties of primarily five years for antenna products and for scanning receivers. The Company’s warranty reserve is based on historical sales and costs of repair and replacement trends. The warranty reserve was $0.4 million at December 31, 2019 and $0.3 million at December 31, 2018 and is included in other accrued liabilities in the accompanying consolidated balance sheets. Year Ended December 31, 2019 2018 Beginning balance $ 339 $ 382 Provisions for warranties 435 65 Consumption of reserves (330 ) (108 ) Ending balance $ 444 $ 339

Leases

Leases	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Leases	7. Leases The Company adopted Topic 842 as of January 1, 2019, using the transition method per ASU No. 2018-11, whereby entities are allowed to apply the new leases standard at the adoption date. Accordingly, all periods prior to January 1, 2019 were presented in accordance with the previous ASC Topic 840 (“Topic 840”), Leases, and no retrospective adjustments were made to the comparative periods presented. Adoption of Topic 842 resulted in an increase to total assets of $1.5 million and to liabilities of $1.6 million from the recording of operating lease right-of-use assets ("ROU") and operating lease liabilities. Finance leases were not impacted by the adoption of Topic 842, as finance lease liabilities and the corresponding ROU assets were already recorded in the balance sheet under the previous guidance, Topic 840. The adoption did not materially impact the Company’s consolidated statements of operations or cash flows. The Company has operating leases for facilities and finance leases for office equipment. Leases with an initial term of 12 months or less are not recorded in the balance sheet. The Company has elected the practical expedient to account for each separate lease component of a contract and its associated non-lease components as a single lease component, thus causing all fixed payments to be capitalized. The Company also elected the package of practical expedients permitted within the new standard, which among other things, allows the Company to carry forward historical lease classifications. The Company determines if an arrangement is a lease at inception of a contract. ROU assets represent the Company's right to use an underlying asset during the lease term and lease liabilities represent the Company's obligation to make lease payments arising from the lease. ROU assets and liabilities are recognized at the lease commencement date based on the net present value of fixed lease payments over the lease term. The Company's lease term is deemed to include options to extend or terminate the lease when it is reasonably certain that it will exercise that option. ROU assets also include any advance lease payments made and exclude lease incentives. As most of the Company's operating leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments on a collateralized basis. Finance lease agreements generally include an interest rate that is used to determine the present value of future lease payments. Operating fixed lease expense and finance lease depreciation expense are recognized on a straight-line basis over the lease term. The Company's lease cost for the year ended December 31, 2019 included the following components: Year ended December 31, 2019 Operating lease costs $ 963 Short-term lease costs 92 Variable lease costs 27 Amortization of finance lease assets 99 Interest on finance lease liabilities 9 Total lease cost $ 1,190 The table below summarizes the Company's scheduled future minimum lease payments under operating and finance leases recorded on the balance sheet as of December 31, 2019: Year Operating Leases Finance Leases 2020 $ 306 $ 84 2021 472 73 2022 558 48 2023 569 32 2024 581 21 Thereafter 3,174 0 Total minimum payments required 5,660 258 Less: present value of tenant allowance 1,002 0 Less: amount representing interest 1,355 17 Present value of net minimum lease payments 3,303 241 Less: current maturities of lease obligations (282 ) (77 ) Long-term lease obligations $ 3,021 $ 164 The weighted average remaining lease terms and discount rates for all the Company’s operating and finance leases were as follows as of December 31, 2019: December 31, 2019 Weighted-average remaining lease term - finance leases 3.6 years Weighted-average remaining lease term - operating leases 9.7 years Weighted-average discount rate - finance leases 4% Weighted-average discount rate - operating leases 5% The table below presents supplemental balance sheet information related to leases during the year ended December 31, 2019: Leases Consolidated Balance Sheet Classification December 31, 2019 Assets: Operating right-of-use assets Other noncurrent assets $ 2,696 Finance right-of-use assets Other noncurrent assets 234 Total lease assets $ 2,930 Liabilities: Current Operating lease liabilities Accrued liabilities $ 282 Finance lease liabilities Accrued liabilities 77 Noncurrent Operating lease liabilities Long-term liabilities 3,021 Finance lease liabilities Long-term liabilities 164 Total lease liabilities $ 3,544 In January 2019, the Company entered into an eleven-year lease ending February 28, 2031 for 21,030 square feet of office space in Clarksburg, Maryland for the Company’s test & measurement product line. The Company moved the operations for its test & measurement product line from its Germantown, Maryland office in January 2020. For the Clarksburg lease, the Company recognized a present value right of use asset of $2.1 million in August 2019, which was the lease commencement date for accounting purposes. The present value of the right of use asset reflects 14 months of rent abatement and $1.5 million in tenant improvement incentives in the form of cash reimbursements which the Company will fully utilize. In accordance with the disclosure requirements for the adoption of Topic 842, the Company is presenting the operating lease commitments table under Topic 840 as of December 31, 2018. The following table is unchanged from the disclosure in Note 7 in the 2018 Form 10-K: Year Amount 2019 $ 98 2020 61 2021 48 2022 23 2023 7 Total minimum payments required 237 Less: amount representing interest 14 Present value of net minimum lease payments $ 223

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2019
Equity [Abstract]
Shareholders' Equity	8. Shareholders’ Equity Common Stock The activity related to common shares outstanding is as follows: Years Ended December 31, 2019 2018 Beginning of year 18,271,249 17,806,792 Issuance of common stock on exercise of stock options 73,680 0 Restricted stock awards, net of cancellations 189,578 343,810 Director share awards 79,918 71,143 Issuance of common stock from purchase of Employee Stock Purchase Plan shares 180,859 156,795 Cancellation of stock for withholding tax for vested shares (183,995 ) (107,291 ) End of Year 18,611,289 18,271,249 Preferred Stock The Company is authorized to issue up to 5,000,000 shares of preferred stock in one or more series, each with a par value of $0.001 per share. As of December 31, 2019, and 2018, no shares of preferred stock were issued or outstanding.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	9. Stock-Based Compensation Stock Plans Common Stock Reserved for Future Issuance A summary of the reserved shares of common stock for future issuance are as follows: December 31, Stock Plan 2019 2018 PCTEL, Inc. 2019 Stock Incentive Plan 2,240,669 0 PCTEL, Inc. 2015 Stock Incentive Plan 489,136 2,160,154 PCTEL, Inc. 2019 Employee Stock Purchase Plan 1,800,000 0 PCTEL, Inc. 2014 Employee Stock Purchase Plan 0 194,814 Total shares reserved 4,529,805 2,354,968 These shares available exclude stock options outstanding. Stock Incentive Plans On May 29, 2019, at the Annual Meeting of Shareholders, the shareholders adopted and approved the PCTEL, Inc. 2019 Stock Incentive Plan (the “2019 Stock Plan”) upon the recommendation of the Board of Directors. The purpose of the 2019 Stock Plan is to promote the interests of the Company and its stockholders by aiding the Company in attracting and retaining employees, officers, consultants, independent contractors and non-employee directors capable of assuring the future success of the Company, to provide such persons with opportunities for stock ownership in the Company and to offer such persons incentives to put forth maximum effort for the success of the Company’s business. The 2019 Stock Plan replaced the PCTEL, Inc. Stock Plan adopted in 2015 (the “2015 Stock Plan”). The 2019 Stock Plan, which is administered by the Compensation Committee of the Company’s Board of Directors, authorizes the grant of stock options, stock appreciation rights, restricted stock, restricted stock units, and other stock-based awards. The aggregate number of shares that may be issued under all stock-based awards made under the 2019 Stock Plan will be (i) the sum of 2,213,000 shares and (ii) any shares subject to any outstanding award under the 2015 Stock Plan that after the effective date of the 2019 Stock Plan are not purchased, are forfeited or are reacquired by the Company or otherwise not delivered to the participant due to termination or cancellation of such award. At December 31, 2019, the number of shares available in the 2019 Stock Plan that were from the 2015 Plan was 27,669. The Board of Directors may from time to time amend, suspend or terminate the 2019 Stock Plan, subject to its terms. Employee Stock Purchase Plan At the 2019 Annual Meeting of Shareholders, the shareholders adopted and approved the PCTEL, Inc. 2019 Employee Stock Purchase Plan (the “2019 ESPP”) upon recommendation of the Board of Directors. The purpose of the 2019 ESPP is to provide employees with an opportunity to purchase shares of PCTEL common stock through accumulated payroll deductions. Encouraging employees to acquire equity ownership in PCTEL assures a closer alignment of the interests of participating employees with those of the Company’s stockholders. The 2019 ESPP replaces the 2014 ESPP effective for the trading period commencing October 1, 2019. On October 1, 2019, the remaining shares from the 2014 ESPP were cancelled. The 2019 ESPP is administered by the Compensation Committee of the Company’s Board of Directors. Subject to change by the administrator, shares of PCTEL common stock may be purchased during consecutive offering periods that begin approximately every six months commencing on the first trading day on or after April 1 and terminating on the last trading day of the offering period ending on September 30 and commencing on the first trading day on or after October 1 and terminating on the last trading day of the offering period ending on March 31. The maximum number of shares of common stock which are available for sale under the 2019 ESPP is 1,800,000 shares. Unless and until the administrator determines otherwise, the purchase price will be equal to 85% of the fair market value of PCTEL common stock on the first day of an offering period or the last day of an offering period, whichever is lower. The administrator may from time to time amend, suspend or terminate the 2019 ESPP, subject to its terms. Stock-Based Compensation Expense The consolidated statements of operations include $4.1 million, and $3.3 million of stock compensation expense for the years ended December 31, 2019 and 2018, respectively. The Company did not capitalize any stock compensation expense during the years ended December 31, 2019, and 2018. The stock-based compensation expense by type is as follows: Years Ended December 31, 2019 2018 Service-based awards $ 1,963 $ 2,618 Director awards 402 422 Performance-based awards - long-term incentive plan 226 0 Performance-based awards - short-term incentive plan 1,335 0 Employee stock purchase plan 205 216 Stock options 2 5 Total $ 4,133 $ 3,261 The stock-based compensation is reflected in the consolidated statements of operations as follows: Years Ended December 31, 2019 2018 Cost of revenues $ 408 $ 224 Research and development 652 620 Sales and marketing 672 576 General and administrative 2,401 1,841 Total $ 4,133 $ 3,261 The following table presents a summary of the remaining unrecognized share-based compensation expense related to our outstanding share-based awards as of December 31, 2019: Award Type Remaining Unrecognized Compensation Expense Weighted Average Life (Years) Service-based awards $ 1,643 1.3 Performance-based awards $ 678 2.0 Stock options $ 1 1.1 Service-Based Awards Restricted Stock The Company grants service-based restricted shares as employee incentives under the 2019 Stock Plan after its adoption at the 2019 annual meeting of shareholders. The Company previously granted service-based restricted shares under the 2015 Stock Plan. During the year ended December 31, 2019, the Company awarded executives and key-managers long-term incentives comprised one-third of service-based restricted stock and two-thirds of performance-based restricted stock. In 2018, the Company awarded annual service-based restricted stock to eligible employees as long-term incentives. When service-based restricted stock is granted to employees, the Company records deferred stock compensation within additional paid-in capital, representing the fair value of the common stock on the date the restricted shares are granted. The Company records stock compensation expense on a straight-line basis over the vesting period of the applicable service-based restricted shares. These grants vest over various periods; however, the restricted stock grants in 2019 and 2018 vest over three years in equal increments. The following table summarizes service-based restricted stock activity: Years ended December 31, 2019 2018 Unvested Restricted Stock Awards Shares Weighted Average Fair Value Shares Weighted Average Fair Value Beginning of year 838,967 $ 6.21 828,576 $ 5.66 Shares awarded 190,159 5.25 486,975 6.92 Shares vested (538,137 ) 5.96 (392,975 ) 5.93 Shares cancelled (13,802 ) 6.27 (83,609 ) 6.14 End of year 477,187 $ 6.11 838,967 $ 6.21 In February 2019, the Company issued to employees 190,159 service-based restricted stock awards that vest in three substantially equal annual increments commencing in 2020. The intrinsic values of service-based restricted shares that vested were $3.3 million and $2.2 million during the years ended December 31, 2019, and 2018, respectively. Restricted Stock Units The Company grants service-based restricted stock units as employee incentives. Restricted stock units are primarily granted to foreign employees for long-term incentive purposes. Employee restricted stock units are service-based awards and are amortized over the vesting period. At the vesting date, these units are converted to shares of common stock. The Company records expense on a straight-line basis for restricted stock units. The following summarizes the service-based restricted stock unit activity: Years Ended December 31, 2019 2018 Unvested Restricted Stock Units Shares Weighted Average Fair Value Shares Weighted Average Fair Value Beginning of year 18,638 $ 5.66 31,800 $ 5.47 Units awarded 2,700 5.27 5,500 7.05 Units vested/Shares awarded (13,221 ) 5.35 (11,587 ) 5.35 Units cancelled 0 0 (7,075 ) 6.90 End of year 8,117 $ 5.83 18,638 $ 5.66 The intrinsic values of service-based restricted stock units that vested were $97 and $61, during the years ended December 31, 2019, and 2018, respectively. Stock Options The Company may grant stock options to purchase common stock to new employees. The Company issues stock options with exercise prices no less than the fair value of the Company’s stock on the grant date. Employee options are subject to installment vesting typically over a period of four years. Stock options may be exercised at any time prior to their expiration date or within 180 days of termination of employment, or such shorter time as may be provided in the related stock option agreement. The Company grants stock options with a ten-year life. The following table summarizes the Company’s stock option activity: Years Ended December 31, 2019 2018 Options Outstanding Weighted Average Exercise Price Options Outstanding Weighted Average Exercise Price Beginning of Year 423,534 $ 7.15 470,484 $ 7.24 Options granted 0 0.00 2,000 6.98 Options exercised (154,409 ) 7.18 0 0.00 Options forfeited 0 0.00 (2,793 ) 5.13 Options cancelled/expired (118,879 ) 7.16 (46,157 ) 8.21 End of Year 150,246 $ 7.11 423,534 $ 7.15 Exercisable 147,394 $ 7.13 417,385 $ 7.17 During the year ended December 31, 2019, the Company received proceeds of $0.5 million from the exercise of 62,909 options and issued 10,771 shares for the exercisable 91,500 options. The intrinsic value of the options exercised was $0.2 million. There were no exercises for the year ended December 31, 2018. The Company did not grant stock options during 2019 and granted 2,000 stock options during 2018. The range of exercise prices for options outstanding and exercisable at December 31, 2019, was $5.00 to $8.32. The following table summarizes information about stock options outstanding under all stock option plans: Options Outstanding Options Exercisable Range of Exercise Prices Number Outstanding Weighted Average Contractual Life (Years) Weighted- Average Exercise Price Number Exercisable Weighted Average Exercise Price $ 5.00 — $ 5.06 8,500 5.04 $ 5.05 6,738 $ 5.05 $ 6.84 — $ 6.98 4,500 5.15 $ 6.90 3,410 $ 6.88 $ 7.16 84,541 0.27 $ 7.16 84,541 $ 7.16 $ 7.22 40,205 0.26 $ 7.22 40,205 $ 7.22 $ 7.31 — $ 8.32 12,500 1.27 $ 7.86 12,500 $ 7.86 $ 5.00 — $ 8.32 150,246 0.61 $ 7.11 147,394 $ 7.13 The weighted average contractual life and intrinsic value at December 31, 2019, was the following: Weighted Average Contractual Life (years) Intrinsic Value Options Outstanding 0.61 $ 205 Options Exercisable 0.54 $ 197 The intrinsic value is based on the share price of $8.47 at December 31, 2019. The Company did not grant any stock options during 2019. The Company calculated the fair value of the 2018 stock options granted on the date of grant using the Black-Scholes option-pricing model based upon the following assumptions: 2018 Dividend yield 3.2% Risk-free interest rate 2.4% Expected volatility 33% Expected life (in years) 3.7 The Black-Scholes option valuation model was developed for use in estimating the fair value of traded options, which have no vesting restrictions and are fully transferable. In addition, option valuation models require the input of highly subjective assumptions including the expected stock price volatility and expected option life. Because the Company’s employee stock options have characteristics significantly different from those of traded options, and because changes in the subjective input assumptions can materially affect the fair value estimate, the existing models may not necessarily provide a reliable single measure of the fair value of the employee stock options. The dividend yield rate was calculated by dividing the Company’s annual dividend by the closing price on the grant date. The risk-free interest rate was based on the U.S. Treasury yields with a remaining term that approximates the expected life of the options granted. The Company calculated the volatility based on a five-year historical period of the Company’s stock price. The expected life used for options granted was based on historical data of employee exercise performance. The Company records expense based on the grading vesting method. Performance-Based Awards Short-Term Incentive Plan Incentive compensation earned by executives and key managers under the Company’s 2019 and 2018 Short-Term Incentive Plans were to be settled 50% in cash and 50% in shares of the Company’s stock. Shares valued at $1.2 million were earned and will be issued to participants during the first quarter 2020. No shares were issued pursuant to the 2018 STIP because the performance thresholds were not met. Long-Term Incentive Plan The Company awards performance-based awards to executives and key managers to encourage sustainable growth, consistent earnings and management retention. Based on the fair value of the shares on the grant date, the Company records stock compensation expense over the performance period based on the estimated achievement of the award. The following table summarizes the performance award activity: Years Ended December 31, 2019 2018 Unvested Performance Awards - at Target Awards Weighted Average Fair Value Awards Weighted Average Fair Value Beginning of Year 0 $ 0.00 110,500 $ 7.49 Awards Granted 174,117 5.27 0 0.00 Awards vested 0 0.00 0 0.00 Units cancelled (2,680 ) 5.27 (110,500 ) 7.49 End of Year 171,437 5.27 0 $ 0.00 The Company granted performance awards to executives and key managers in February 2019 (“2019 LTIP”). Under the 2019 LTIP shares of the Company’s stock can be earned based on achievement of a three-year revenue growth target with a penalty if a certain adjusted EBITDA level is not maintained. If the Company achieves less than the target growth over the performance period, the participant will receive fewer shares than the target award, determined on a straight-line basis. If the Company, achieves greater than the target growth, the participant will receive more shares than the target award on an accelerated basis. The performance period for the 2019 LTIP is from January 1, 2019 through December 31, 2021 and the participants are required to be in service at the determination date of the award following the end of the performance period in order to receive the award. Shares earned under the 2019 LTIP will be fully vested shares. At target, the total fair market value of the award was $0.9 million based on the share price of $5.27 on the grant date. On the award date, the aggregate number of shares that could be earned at target was 174,117 and the maximum number of aggregate shares that could be earned was 300,015. During the year ended December 31, 2019, the target and maximum shares that can be earned declined by 2,680 and 4,690, respectively due to employee terminations. The Company granted performance awards to executives and key managers in 2015 (“2015 LTIP”) with four-year revenue goals. No shares were earned under the 2015 LTIP and the remaining awards were cancelled at December 31, 2018. The performance-based awards cancelled during 2018 consisted of 88,000 awards that were not earned and 22,500 awards related to terminated employees. Employee Stock Purchase Plan The following table summarizes the ESPP activity: Years Ended December 31, 2019 2018 Shares Weighted Average Fair Value at Grant Date Shares Weighted Average Fair Value at Grant Date Outstanding, beginning of year 0 $ 0.00 0 $ 0.00 Granted 180,859 1.08 156,795 1.49 Vested (180,859 ) 1.08 (156,795 ) 1.49 Outstanding, end of year 0 $ 0.00 0 $ 0.00 Based on the 15% discount and the fair value of the option feature of this plan, the ESPP is considered compensatory. Compensation expense is calculated using the fair value of the employees’ purchase rights under the Black-Scholes model. During the years ended December 31, 2019 and 2018, the Company received proceeds of $0.7 million from the ESPP. The Company calculated the fair value of each employee stock purchase grant under the ESPP on the date of grant using the Black-Scholes option-pricing model using the following assumptions: Employee Stock Purchase Plan 2019 2018 Dividend yield 4.1 % 3.2 % Risk-free interest rate 2.5 % 2.1 % Expected volatility 34 % 33 % Expected life (in years) 0.5 0.5 The dividend yield rate was calculated by dividing the Company’s annual dividend by the closing price on the grant date. The risk-free interest rate was based on the U.S. Treasury yields with remaining term that approximates the expected life of the options granted. The Company calculated the volatility based on a five-year historical period of the Company’s stock price. The expected life used was based on the offering period. Board of Director Awards The Company grants equity awards to members of its Board of Directors for an annual retainer and for committee services in shares of the Company’s stock. These awards vest immediately. In addition, new directors receive a one-time grant of $55 paid in service-based restricted shares which vest in equal annual increments over three years. During the year ended December 31, 2019, the Company issued 79,918 shares of the Company’s stock with a fair value of $0.4 million which vested immediately. During the year ended December 31, 2018, the Company issued 63,897 shares of the Company’s stock with a fair value of $0.4 million which vested immediately and issued 7,246 shares with a fair value of $50 vesting over three years to a new Director. The following table summarizes the director awards activity: Years Ended December 31, 2019 2018 Shares Weighted Average Fair Value at Grant Date Shares Weighted Average Fair Value at Grant Date Outstanding, beginning of year 7,246 $ 6.90 0 $ 0.00 Granted 79,918 5.03 71,143 6.63 Vested (82,333 ) (5.08 ) (63,897 ) (6.60 ) Outstanding, end of year 4,831 $ 6.90 7,246 $ 6.90 Employee Withholding Taxes on Stock Awards For ease in administering the issuance of stock awards, the Company holds back shares of vested restricted stock awards and short-term incentive plan stock awards, if paid in the Company’s stock, for the value of the statutory withholding taxes. For each individual receiving a stock award, the Company redeems the shares it computes as the value for the withholding tax and remits this amount to the appropriate tax authority. For withholding taxes related to stock awards, the Company paid $1.2 million during the year ended December 31, 2019 and $0.6 million during the year ended December 31, 2018. Share Repurchases On November 6, 2019 the Board of Directors approved a share repurchase program pursuant to which the Company may repurchase up to $7.0 million of its common stock, effective immediately through the end of 2020. Such purchases may be made from time to time at predetermined prices in the open market, by block purchases, in private transactions or otherwise. The repurchases will be funded with cash on hand. The Company did not repurchase any shares of its common stock during the fourth quarter of 2019.

Product Line, Customer and Geog

Product Line, Customer and Geographic Information	12 Months Ended
	Dec. 31, 2019
Segment Reporting [Abstract]
Product Line, Customer and Geographic Information	10. Product Line, Customer and Geographic Information Product Line Information: The following tables are the product line revenues and gross profits for the years ended December 31, 2019, and 2018: Year Ended December 31, 2019 Antenna Products Test & Measurement Corporate Total Revenues $ 62,708 $ 28,115 $ (206 ) $ 90,617 Gross Profit $ 21,841 $ 19,640 $ 31 $ 41,512 Gross Profit % 34.8 % 69.9 % NA 45.8 % Year Ended December 31, 2018 Antenna Products Test & Measurement Corporate Total Revenues $ 66,328 $ 16,733 $ (82 ) $ 82,979 Gross Profit $ 20,157 $ 10,883 $ 41 $ 31,081 Gross Profit % 30.4 % 65.0 % NA 37.5 % Customer Concentration: There were no customers that accounted for 10% or more of revenues during the years ended December 31, 2019, and 2018. The following table represents the customers that accounted for 10% or more of total trade accounts receivable at December 31, 2019 and 2018. As of December 31, Trade Accounts Receivable 2019 2018 Customer A 15% 9% Customer B 11% 1% Customer C 8% 13% Geographic Information: The Company’s revenue to customers by geographic location, as a percent of total revenues, is as follows: Years Ended December 31, Region 2019 2018 Europe, Middle East, & Africa 14 % 12 % Asia Pacific 10 % 15 % Other Americas 3 % 4 % Total Foreign sales 27 % 31 % Total Domestic sales 73 % 69 % 100 % 100 % The long-lived assets by geographic region are as follows: December 31, 2019 2018 United States $ 17,485 $ 15,153 All Other 945 1,391 $ 18,430 $ 16,544

Benefit Plans

Benefit Plans	12 Months Ended
	Dec. 31, 2019
Compensation And Retirement Disclosure [Abstract]
Benefit Plans	11. Benefit Plans The Company’s 401(k) plan covers all of the U.S. employees beginning the first of the month following the first month of their employment. Under this plan, employees may elect to contribute up to 15% of their current compensation to the 401(k) plan up to the statutorily prescribed annual limit. The Company matches 100% of the employee’s elective deferrals up to 4% of their compensation. The Company may make discretionary contributions to the 401(k) plan but there were no discretionary contributions during the years ended December 31, 2019 or 2018. The Company also contributes to various defined contribution retirement plans for foreign employees. The defined contribution for foreign employees is primarily related to contributions for employees of the Company’s China subsidiary. The Company’s contributions to retirement plans were as follows: Years ended December 31, 2019 2018 PCTEL, Inc. 401(k) profit sharing plan - US employees $ 645 $ 681 Defined contribution plans - foreign employees 444 527 Total $ 1,089 $ 1,208

Quarterly Data (Unaudited)

Quarterly Data (Unaudited)	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Quarterly Data (Unaudited)	12. Quarterly Data (Unaudited) Quarters Ended, March 31, June 30, September 30, December 31, 2019 2019 2019 2019 Revenues $ 20,590 $ 23,499 $ 23,630 $ 22,898 Gross profit 8,658 10,694 10,647 11,513 Operating income (loss) (469 ) 629 941 1,707 Income (loss) before income taxes (307 ) 949 1,334 1,814 Net income (loss) $ (317 ) $ 941 $ 1,328 $ 1,798 Net income (loss) per share: Basic $ (0.02 ) $ 0.05 $ 0.07 $ 0.10 Diluted $ (0.02 ) $ 0.05 $ 0.07 $ 0.10 Weighted Average Shares: Basic 17,617,099 17,827,591 17,921,552 18,033,548 Diluted 17,617,099 17,934,141 18,181,157 18,460,503 Quarters Ended, March 31, June 30, September 30, December 31, 2018 2018 2018 2018 Revenues $ 21,731 $ 21,582 $ 18,426 $ 21,240 Gross profit 7,864 7,799 6,721 8,697 Operating loss (1,221 ) (1,602 ) (2,378 ) (425 ) Loss before income taxes (1,170 ) (1,393 ) (2,152 ) (347 ) Net loss $ (858 ) $ (1,226 ) $ (1,670 ) $ (9,135 ) Net loss per share: Basic $ (0.05 ) $ (0.07 ) $ (0.10 ) $ (0.53 ) Diluted $ (0.05 ) $ (0.07 ) $ (0.10 ) $ (0.53 ) Weighted Average Shares: Basic 17,055,659 17,142,318 17,234,187 17,361,255 Diluted 17,055,659 17,142,318 17,234,187 17,361,255

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	12 Months Ended
	Dec. 31, 2019
Equity [Abstract]
Accumulated Other Comprehensive Income	13. Accumulated Other Comprehensive Income Accumulated other comprehensive losses of $0.3 million and $0.2 million at December 31, 2019 and December 31, 2018, respectively, consists of foreign currency translation adjustments.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	12 Months Ended
	Dec. 31, 2019
Revenue From Contract With Customer [Abstract]
Revenue from Contracts with Customers	14. Revenue from Contracts with Customers Under Topic 606, a contract with a customer is an agreement which both parties have approved, that creates enforceable rights and obligations, has commercial substance, and has identified payment terms, and for which collectability is probable. Once the Company has entered into a contract, it is evaluated to identify performance obligations. For each performance obligation, revenue is recognized as control of promised goods or services transfers to the customer in an amount that reflects the consideration the Company expects to receive in exchange for those goods or services. The amount of revenue recognized takes into account variable consideration, such as returns and volume rebates. A majority of the Company’s revenue is short cycle in nature with shipments within one year from order. The Company's payment terms generally range between 30 to 90 days. All of the Company’s revenue relates to contracts with customers. The Company’s accounting contracts are from purchase orders or purchase orders combined with purchase agreements. The majority of the Company’s revenue is recognized on a “point-in-time” basis and a nominal amount of revenue is recognized “over time”. For the sale of antenna products and test & measurement products, the Company satisfies its performance obligations generally at the time of shipment, or upon delivery based on the contractual terms with its customers. For products shipped on consignment, the Company recognizes revenue upon delivery from the consignment location. For its test & measurement software tools, the Company has a performance obligation to provide software maintenance and support for one year. The Company recognizes revenues for the maintenance and support over this period. The Company considers shipping and handling performed by the Company as fulfillment activities. Amounts billed for shipping and handling are included in revenues, while costs incurred for shipping and handling are included in cost of revenues. The Company excludes taxes from the transaction price. Cost of contracts include sales commissions. The Company expenses the cost of contracts when incurred because the amortization period is one year or less. For the test & measurement product line, performance obligations for the sale of products and software licenses are satisfied at a point in time and the performance obligations for post contract support (“PCS”), extended warranties, and data storage are satisfied over time. If there is no standalone selling price for the performance obligations satisfied over time, the Company uses a market assessment approach for the standalone selling price. This standalone selling price is consistent for all customers. Antenna product line sales have either contract pricing or negotiated prices on individual purchase orders. Variable consideration related to specific customers or orders that impacts the stand-alone selling price including right of return, rebate incentives, or quantity-based pricing. The Company allows its major distributors and certain other customers to return unused antenna products under specified terms and conditions. The Company estimates product returns based on historical sales and return trends and records a corresponding refund liability. The refund liability was $0.1 million and $0.2 million at December 31, 2019 and December 31, 2018, respectively and is included within accrued liabilities on the accompanying consolidated balance sheets. Additionally, the Company recorded an asset based on historical experience for the amount of product expected to be returned to inventory as a result of the return, which is recorded in inventories in the condensed consolidated balance sheets. The product return asset was $0.1 million at December 31, 2019 and December 31, 2018. There were no contract assets at December 31, 2019 or December 31, 2018. The Company records contract liabilities for deferred revenue and customer prepayments. Contract liabilities are recorded in accrued liabilities in the consolidated balance sheets. The contract liability was $0.2 million at December 31, 2019 and at December 31, 2018. The Company recognized revenue of $0.2 million during the years ended December 31, 2019, and December 31, 2018 respectively, related to contract liabilities at the beginning of the period.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	15. Subsequent Events The Company evaluates subsequent events occurring between the most recent balance sheet date and the date that the financial statements are available to be issued in order to determine whether the subsequent events are to be recorded and/or disclosed in the Company’s financial statements and footnotes. The financial statements are considered to be available to be issued at the time that they are filed with the SEC. There were no subsequent events or transactions that required recognition or disclosure in the consolidated financial statements

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2019
Valuation And Qualifying Accounts [Abstract]
Schedule II - Valuation and Qualifying Accounts	PCTEL, INC. (in thousands) Balance at Charged to Balance at Beginning Costs and Additions End of of Year Expenses (Deductions) Year Year Ended December 31, 2018: Allowance for doubtful accounts $ 319 265 (521 ) $ 63 Warranty reserves $ 382 65 (108 ) $ 339 Deferred tax asset valuation allowance $ 5,234 9,223 0 $ 14,457 Year Ended December 31, 2019: Allowance for doubtful accounts $ 63 (2) 43 $ 104 Warranty reserves $ 339 213 (108 ) $ 444 Deferred tax asset valuation allowance $ 14,457 0 (967 ) $ 13,490

Organization and Summary of S_2

Organization and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Nature of Operations	Nature of Operations PCTEL, Inc. (“PCTEL”, the “Company”, “we”, “ours”, and “us”) is a leading global supplier of wireless network antenna and testing solutions. PCTEL designs and manufactures precision antennas and provides test & measurement products that improve the performance of wireless networks globally. PCTEL products address three market segments: Enterprise Wireless, Intelligent Transportation, and Industrial Internet of Things (“IoT”). PCTEL antennas are deployed in small cells, enterprise Wi-Fi access points, fleet management and transit systems, and in network equipment and devices for the Industrial Internet of Things. PCTEL test & measurement tools improve the performance of wireless networks globally. Mobile operators, neutral hosts, and equipment manufacturers rely on PCTEL products to analyze, design, and optimize next generation wireless networks. Antenna Products PCTEL designs and manufactures precision antennas and offers in-house wireless product development for our customers, including design, testing, radio integration, and manufacturing capabilities. PCTEL antennas are deployed in small cells, enterprise Wi-Fi access points, fleet management and transit systems, and in equipment and devices for the IIoT. Revenue growth in these markets is driven by the increased use and complexity of wireless communications. Consistent with the Company’s mission to solve complex network engineering problems and in order to compete effectively in the antenna market, PCTEL maintains expertise in the following areas: radio frequency engineering, wireless network engineering, mechanical engineering, mobile antenna design, manufacturing, and product quality and testing. The Company seeks out product applications that command a premium for product design, performance, and customer service, and avoids commodity markets. Our antennas are primarily sold to original equipment manufacturer (“OEM”) providers where they are designed into the customers’ solution. Competition in the antenna markets is fragmented. Competitors include Airgain, Amphenol, Laird, Panorama, and Taoglas. Test & Measurement Products PCTEL provides RF test & measurement tools that improve the performance of wireless networks globally, with a focus on LTE, public safety, and 5G technologies. Network operators, neutral hosts, and equipment manufacturers rely on our scanning receivers and testing solutions to analyze, design, and optimize next generation wireless networks. Revenue growth in this market is driven by the implementation and roll out of new wireless technology standards (i.e. 3G to 4G, 4G to 5G). Consistent with our mission to solve complex network engineering problems and in order to compete effectively in the RF test & measurement market, PCTEL maintains expertise in the following areas: radio frequency engineering, digital signal process (“DSP”) engineering, wireless network engineering, mechanical engineering, manufacturing, and product quality and testing. The Company’s test equipment is sold directly to wireless carriers or to OEMs who integrate its products into their solutions which are then sold to wireless carriers. Competitors for the Company’s test tool products include OEMs such as Anritsu, Berkley Varitronics, Rohde and Schwarz, and Viavi.
Basis of Consolidation	Basis of Consolidation These consolidated financial statements include the accounts of the Company and its subsidiaries. All intercompany accounts and transactions have been eliminated.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with generally accepted accounting principles in the U.S. 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 periods reported. Actual results could differ from those estimates.
Foreign Operations	Foreign Operations The Company is exposed to foreign currency fluctuations due to its foreign operations and because products are sold internationally. The functional currency for the Company’s foreign operations is predominantly the applicable local currency. Accounts of foreign operations are translated into U.S. dollars using the year-end exchange rate for assets and liabilities and average monthly rates for revenue and expense accounts. Adjustments resulting from translation are included in accumulated other comprehensive income (loss), a separate component of stockholders’ equity. Gains and losses resulting from other transactions originally in foreign currencies and then translated into U.S. dollars are included in the consolidated statements of operations. For the year ended December 31, 2019, foreign currency transactions resulted in foreign exchange gains of $0.1 million and for the year ended December 31, 2018, foreign currency transactions resulted in foreign exchange losses of $0.1 million. Foreign exchange gains and losses are recorded in other income in the consolidated statement of operations.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The Company follows accounting pronouncements for Fair Value Measurements and Disclosures, which establishes a fair value hierarchy that requires the Company to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, a three-tier fair value hierarchy has been established, which prioritizes the inputs used in measuring fair value as follows: Level 1: inputs are unadjusted quoted prices in active markets for identical assets or liabilities. Level 2: inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices in active markets for similar assets and liabilities, quoted prices for identical or similar assets or liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of assets or liabilities. Level 3: unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Cash equivalents are measured at fair value and investments are recognized at amortized cost in the Company’s financial statements. Accounts receivable and other investments are financial assets with carrying values that approximate fair value due to the short-term nature of these assets. Accounts payable is a financial liability with a carrying value that approximates fair value due to the short-term nature of these liabilities.
Cash and Cash Equivalents and Investments	Cash and Cash Equivalents and Investments The Company’s cash and cash equivalents and investments consist of the following: December 31, December 31, 2019 2018 Cash $ 5,604 $ 1,485 Cash equivalents 1,490 2,844 Short-term investments 32,556 30,870 $ 39,650 $ 35,199
Cash and Cash Equivalents	Cash and Cash Equivalents At December 31, 2019 and 2018, cash and cash equivalents included bank balances and investments with original maturities less than 90 days. At December 31, 2019 and 2018, the Company’s cash equivalents were invested in highly liquid AAA rated money market funds that are required to comply with Rule 2a-7 under the Investment Company Act of 1940. Such funds utilize the amortized cost method of accounting, seek to maintain a constant $1.00 per share price, and are redeemable upon demand. The Company restricts its investments in AAA money market funds to those invested 100% in either short-term U.S. Government Agency securities or bank repurchase agreements collateralized by these same securities. The fair values of these money market funds are established through quoted prices in active markets for identical assets (Level 1 inputs). The cash in the Company’s U.S. banks is insured by the Federal Deposit Insurance Corporation up to the insurable limit of $250. At December 31, 2019, the Company had $2.1 million of cash in bank accounts in China. The Company’s cash in these foreign bank accounts is not insured. As of December 31, 2019, the Company has no intentions of repatriating the cash in its foreign bank accounts in China. If the Company decides to repatriate the cash in the foreign bank accounts, it may experience difficulty in doing so in a timely manner. The Company may also be exposed to foreign currency fluctuations and taxes if it repatriates these funds. At December 31, 2018, the Company had $0.6 million of cash in bank accounts in China and $0.2 million of cash in bank accounts in Israel. The Company completed the closure of its Israel subsidiary during the fourth quarter 2018 and repatriated the remaining cash of $0.2 million during the second quarter of 2019.
Investments	Investments At December 31, 2019, the Company’s short-term investments consisted of A or higher rated corporate bonds and certificates of deposit. At December 31, 2018, the Company’s short-term investments consisted of U.S. government agency bonds, A or higher rated corporate bonds and certificates of deposit. All of the investments at December 31, 2019 and 2018 were classified as held-to-maturity. Cash equivalents and Level 1 and Level 2 investments measured at fair value were as follows: December 31, 2019 December 31, 2018 Level 1 Level 2 Total Level 1 Level 2 Total Cash equivalents: Corporate bonds $ 0 $ 708 $ 708 $ 0 $ 1,156 $ 1,156 Money market funds 782 0 782 1,688 0 1,688 Total Cash Equivalents $ 782 $ 708 $ 1,490 $ 1,688 $ 1,156 $ 2,844 Investments: Corporate bonds 0 28,710 28,710 0 21,583 21,583 US government agency bonds 0 0 0 0 5,671 5,671 Certificates of deposit 3,846 0 3,846 3,616 0 3,616 Total Investments $ 3,846 $ 28,710 $ 32,556 $ 3,616 $ 27,254 $ 30,870 Cash equivalents and Investments - book value $ 4,628 $ 29,418 $ 34,046 $ 5,304 $ 28,410 $ 33,714 Unrealized gains (losses) 1 (11 ) (10 ) 0 (21 ) (21 ) Cash equivalents and Investments - fair value $ 4,629 $ 29,407 $ 34,036 $ 5,304 $ 28,389 $ 33,693 The Company categorizes its financial instruments within a fair value hierarchy according to accounting guidance for fair value. The fair value hierarchy is described under the Fair Value of Financial Instruments in Note 1. For the Level 2 investments, the Company uses quoted prices of similar assets in active markets. There were no Level 3 investments at December 31, 2019 or 2018. The fair values in the table above reflect net unrealized losses of $10 and $21 at December 31, 2019 and December 31, 2018, respectively.
Accounts Receivable and Allowance for Doubtful Accounts	Accounts Receivable and Allowance for Doubtful Accounts Accounts receivable are recorded at invoiced amount with standard net terms for most customers that range between 30 and 90 days. The Company extends credit to its customers based on an evaluation of a company’s financial condition and collateral is generally not required. The Company maintains an allowance for doubtful accounts for estimated uncollectible accounts receivable. The allowance is based on the Company’s assessment of known delinquent accounts, historical experience, and other currently available evidence of the collectability and the aging of accounts receivable. The Company’s allowance for doubtful accounts was $0.1 million at December 31, 2019 and 2018, respectively. The provision for doubtful accounts is included in sales and marketing expense in the consolidated statements of operations.
Inventories	Inventories Inventories are stated at the lower of cost or net realizable value and include material, labor and overhead costs using the first-in, first-out method of costing. Inventories as of December 31, 2019 and 2018 were composed of raw materials, work-in-process, and finished goods. The Company had consigned inventory of $0.3 million and $0.9 million at December 31, 2019 and 2018, respectively. The Company records allowances to reduce the value of inventory to the lower of cost or market, including allowances for excess and obsolete inventory. Reserves for excess inventory are calculated based on the Company’s estimate of inventory in excess of normal and planned usage. Obsolete reserves are based on the Company’s identification of inventory where carrying value is above net realizable value. The allowance for inventory losses was $3.4 million and $3.3 million as of December 31, 2019 and 2018, respectively. Inventories consisted of the following: December 31, 2019 December 31, 2018 Raw materials $ 6,502 $ 7,023 Work in process 913 1,388 Finished goods 4,520 4,437 Inventories, net $ 11,935 $ 12,848
Prepaid and Other Current Assets	Prepaid and Other Current Assets Prepaid assets are stated at cost and are amortized over the useful lives (up to one year) of the assets.
Property and Equipment	Property and Equipment Property and equipment are stated at cost and are depreciated using the straight-line method over the estimated useful lives of the assets. The Company depreciates computer equipment and software license over three to five years, office equipment, manufacturing and test equipment and motor vehicles over five years, furniture and fixtures over seven years, and buildings over 30 years. Leasehold improvements are amortized over the shorter of the corresponding lease term or useful life. Depreciation expense and gains and losses on the disposal of property and equipment are included in cost of sales and operating expenses in the consolidated statements of operations. Maintenance and repairs are expensed as incurred. Property and equipment consisted of the following: December 31, 2019 December 31, 2018 Building $ 6,389 $ 6,351 Computers and office equipment 9,847 10,963 Manufacturing and test equipment 14,192 13,573 Furniture and fixtures 1,314 1,318 Leasehold improvements 2,850 1,529 Motor vehicles 20 20 Total property and equipment 34,612 33,754 Less: Accumulated depreciation and amortization (24,397 ) (23,386 ) Land 1,770 1,770 Property and equipment, net $ 11,985 $ 12,138 Depreciation and amortization expense were approximately $2.9 million and $2.8 million for the years ended December 31, 2019 and 2018, respectively. Amortization for capital leases is included in depreciation and amortization expense. See Note 7 for information related to finance leases.
Liabilities	Liabilities Accrued liabilities consisted of the following: December 31, 2019 December 31, 2018 Short-term incentive plan $ 2,553 $ 0 Payroll and other employee benefits 1,605 1,409 Inventory receipts 1,431 1,396 Paid time off 855 936 Leasehold improvements 702 0 Warranties 444 339 Operating leases 282 0 Professional fees and contractors 246 346 Deferred revenues 241 149 Employee stock purchase plan 228 343 Real estate taxes 152 148 Customer refunds for estimated returns 147 154 Income and sales taxes 133 186 Finance leases 77 91 Restructuring 45 33 Other 241 271 Total $ 9,382 $ 5,801 Long-term liabilities consisted of the following: December 31, 2019 December 31, 2018 Operating leases $ 3,021 $ 0 Finance leases 164 132 Deferred revenue 119 87 Other 11 162 Total $ 3,315 $ 381
Revenue Recognition	Revenue Recognition The Company sells antenna products and test & measurement products. All of the Company’s revenue relates to contracts with customers. The Company’s accounting contracts are from purchase orders or purchase orders combined with purchase agreements. The majority of the Company’s revenue is recognized on a “point-in-time” basis and a nominal amount of revenue is recognized “over time”. For the sale of antenna products and test & measurement products, the Company satisfies its performance obligations generally at the time of shipment, or upon delivery based on the contractual terms with its customers. For products shipped on consignment, the Company recognizes revenue upon customer delivery from the consignment location. For its test & measurement software tools, the Company has a performance obligation to provide software maintenance and support for one year. The Company recognizes revenues for the maintenance and support over this period. The Company recognizes revenue for sales of its products when control transfers, which is predominantly upon shipment from its factory. For products shipped on consignment, the Company recognizes revenue upon delivery from the consignment location. The Company allows its major antenna product distributors to return product under specified terms and conditions and accrues for product returns. See Note 14 for additional information related to revenue policies.
Research and Development Costs	Research and Development Costs The Company expenses research and development costs as incurred. To date, the Company has expensed all software development costs related to research and development because the costs incurred subsequent to the products reaching technological feasibility were not significant.
Advertising Costs	Advertising Costs Advertising costs are expensed in the period in which they are incurred. Advertising expense was $0.2 million and $0.1 million during the years ended December 31, 2019, and 2018, respectively.
Income Taxes	Income Taxes Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, and deferred tax assets are recognized for net operating losses and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Valuation allowances are provided against deferred tax assets, which are not likely to be realized. On a regular basis, management evaluates the recoverability of deferred tax assets and the need for a valuation allowance. The Company recognizes the effect of income tax positions only if those positions are more likely than not of being sustained. Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. On December 22, 2017, the United States federal government enacted the Tax Cuts and Jobs Act (“Tax Act”), marking a change from a worldwide tax system to a modified territorial tax system in the United States. As part of this change, the Tax Act, among other changes, provided for a transition tax on the accumulated unremitted foreign earnings and profits of the Company’s foreign subsidiaries (“Transition Tax”), a reduction of the U.S. federal corporate income tax rate from 34% to 21%, and an indefinite carryforward of net operating losses (“NOLs”) incurred in 2018 and future periods subject to an 80% annual limitation against future income. Deferred tax assets arise when the Company recognizes charges or expenses in the financial statements that will not be allowed as income tax deductions until future periods. The deferred tax assets also include unused tax net operating losses and tax credits that the Company is allowed to carryforward to future years. Accounting rules permit the Company to carry the deferred tax assets on the balance sheet at full value as long as it is more likely than not the deductions, losses, or credits will be used in the future. A valuation allowance must be recorded against a deferred tax asset if this test cannot be met. The Company had a full valuation allowance of $13.5 million at December 31, 2019 and of $14.5 million at December 31, 2018. See Note 5 for more information on the deferred tax valuation allowance.
Sales and Value Added Taxes	Sales and Value Added Taxes Taxes collected from customers and remitted to governmental authorities are presented on a net basis in cost of sales in the accompanying consolidated statements of operations.
Shipping and Handling Costs	Shipping and Handling Costs Shipping and handling costs are included on a gross basis in cost of sales in the accompanying consolidated statements of operations.
Goodwill	Goodwill The Company performs an annual impairment test of goodwill as of the end of the first month of the fourth fiscal quarter (October 31st), or at an interim date if an event occurs or if circumstances change that would indicate that an impairment loss may have been incurred. In performing the annual impairment tests, the Company may consider qualitative factors that would indicate possible impairment. A quantitative fair value assessment is also performed at the reporting unit level. If the fair value exceeds the carrying value, then goodwill is not impaired, and no further testing is performed. If the carrying value exceeds the fair value, the implied fair value of goodwill is then compared against the carrying value of goodwill to determine the amount of impairment. The process of evaluating the potential impairment of goodwill is subjective because it requires the use of estimates and assumptions in determining a reporting unit’s fair value. The Company calculates the fair value of each reporting unit by using the income approach based on the present value of future discounted cash flows. The discounted cash flow method requires the Company to use estimates and judgments about the future cash flows of the reporting units. Although the Company bases cash flow forecasts on assumptions that are consistent with plans and estimates the Company uses to manage the underlying reporting units, there is significant judgment in determining the cash flows attributable to these reporting units, including markets and market share, sales volumes and mix, research and development expenses, tax rates, capital spending, discount rate and working capital changes. Cash flow forecasts are based on reporting unit operating plans for the early years and business projections in later years. The Company believes the accounting estimate related to the valuation of goodwill is a critical accounting estimate because it requires the Company to make assumptions that are highly uncertain about the future cash flows of the reporting units. Changes in these estimates can have a material impact on the Company’s financial statements. The Company performed its annual goodwill test at October 31, 2019 and at October 31, 2018 for the goodwill of $3.3 million. The Company performed both a qualitative analysis of goodwill and a quantitative analysis. There were no triggering events from the qualitative analysis, and the fair value of the reporting unit was higher than its carrying value in the quantitative analysis. Based on the Company’s analysis, there was no impairment of goodwill as of the testing dates because the fair value of the reporting unit exceeded its carrying value by a significant margin.
Long-lived and Definite-Lived Intangible assets	Long-lived and Definite-Lived Intangible assets The Company reviews definite-lived intangible assets, investments and other long-lived assets for impairment when events or changes in circumstances indicate that their carrying values may not be fully recoverable. This analysis differs from the Company’s goodwill analysis in that definite-lived intangible asset impairment is only deemed to have occurred if the sum of the forecasted undiscounted future cash flows related to the assets being evaluated is less than the carrying value of the assets. The estimate of long-term undiscounted cash flows includes long-term forecasts of revenue growth, gross margins, and operating expenses. All of these items require significant judgment and assumptions. There have been no impairments related to long-lived assets used for operations during the years ended December 31, 2019, and 2018.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In July 2019, the FASB issued ASU 2019-07, Codification Updates to SEC Sections. This ASU amends various SEC paragraphs pursuant to the issuance of SEC Final Rule Releases No. 33-10532, Disclosure Update and Simplification, and Nos. 33-10231 and 33-10442, Investment Company Reporting Modernization. One of the changes in the ASU requires a presentation of changes in stockholders’ equity in the form of a reconciliation, either as a separate financial statement or in the notes to the financial statements, for the current and comparative year-to-date interim periods. The Company presented changes in stockholders' equity as separate financial statements for the current and comparative year-to-date interim periods beginning on January 1, 2019. The additional elements of the ASU did not have a material impact on the Company's Consolidated Financial Statements. In August 2018, the FASB issued ASU 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. The amendments in this update align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). The accounting for the service element of a hosting arrangement that is a service contract is not affected by the amendments in this update. This guidance was effective for the Company on January 1, 2020. The adoption of ASU 2018-15 did not have a material impact on the consolidated financial statements. In October 2016, the FASB issued ASU 2016-16, Income Taxes (“Topic 740”): Intra-Entity Transfer of Assets Other than Inventory. Topic 740 requires an entity to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. The Company adopted Topic 740 on January 1, 2018 using the modified retrospective approach, and as a result recorded a deferred tax asset with a corresponding adjustment to retained earnings of $0.1 million associated with an intra-entity transfer of goodwill in 2009. The goodwill was transferred to the U.S. entity from a Canadian entity that was dissolved in 2009. In June 2016, the FASB issued Accounting Standards Update No. 2016-13 ("ASU 2016-13") regarding ASC Topic 326, "Financial Instruments - Credit Losses," which modifies the measurement of expected credit losses of certain financial instruments. The Company will be required to use a forward-looking expected credit loss model for accounts receivables, loans, and other financial instruments. The amendments were effective for the Company on January 1, 2020. Adoption of the standard will be applied using a modified retrospective approach. Adoption of ASU 2016-13 did not have a material impact on its consolidated financial statements. In February 2016, the FASB issued Accounting Standards Update (“ASU”) 2016-02, Leases (“Topic 842”), which amends existing guidance to require lessees to recognize assets and liabilities on the balance sheet for the rights and obligations created by long-term leases and to disclose additional quantitative and qualitative information about leasing arrangements. This ASU also provides clarification surrounding the presentation of the effects of leases in the statement of operations and statement of cash flows. The Company adopted this guidance on January 1, 2019. The Company commenced its assessment of Topic 842 in the second half of 2018 and developed a project plan to guide the implementation. The Company completed this project planning which it analyzed the ASU's impact on its leases, surveyed the Company's key employees, assessed the portfolio of leases, and established a future lease process to keep the lease accounting portfolio up to date. The Company also evaluated the key policy elections and considerations under the standard and completed the internal policy documentation to address the new standard requirements. The Company adopted this new guidance using the updated modified transition method allowed per ASU 2018-11 of Topic 842. Upon adoption on January 1, 2019, total assets and liabilities increased due to the recording of right-of-use assets of $1.5 million and lease liabilities of $1.6 million. See Note 7 for additional information and disclosures required by this new standard. In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers” (“Topic 606”) which introduced a new revenue recognition model in which an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Topic 606 defines a five-step process to achieve this core principle and, in doing so, more judgment and estimates may be required in connection with the revenue recognition process than were previously required under prior U.S. GAAP. Topic 606 also requires disclosures sufficient to enable users to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers, including qualitative and quantitative disclosures about contracts with customers, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. The FASB has also issued the following standards which clarify Topic 606 and have the same effective date as the original standard: ASU 2016-20, Technical Corrections and Improvements to Topic 606, ASU No. 2016-12, Narrow-Scope Improvements and Practical Expedients, ASU 2016-10, Identifying Performance Obligations and Licensing and ASU 2016-08, Principal versus Agent Considerations. The Company adopted Topic 606 on January 1, 2018 using the modified retrospective approach. The impact of the adoption of Topic 606 was not material to the consolidated financial statements. The majority of the Company’s revenue is recognized on a “point-in-time” basis and a nominal amount of the Company’s revenue is recognized “over time” under the new standard, which is consistent with the Company’s revenue recognition policy under the previous guidance.

Organization and Summary of S_3

Organization and Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Cash and Cash Equivalents and Investments	The Company’s cash and cash equivalents and investments consist of the following: December 31, December 31, 2019 2018 Cash $ 5,604 $ 1,485 Cash equivalents 1,490 2,844 Short-term investments 32,556 30,870 $ 39,650 $ 35,199
Cash Equivalents and Investments Measured at Fair Value	Cash equivalents and Level 1 and Level 2 investments measured at fair value were as follows: December 31, 2019 December 31, 2018 Level 1 Level 2 Total Level 1 Level 2 Total Cash equivalents: Corporate bonds $ 0 $ 708 $ 708 $ 0 $ 1,156 $ 1,156 Money market funds 782 0 782 1,688 0 1,688 Total Cash Equivalents $ 782 $ 708 $ 1,490 $ 1,688 $ 1,156 $ 2,844 Investments: Corporate bonds 0 28,710 28,710 0 21,583 21,583 US government agency bonds 0 0 0 0 5,671 5,671 Certificates of deposit 3,846 0 3,846 3,616 0 3,616 Total Investments $ 3,846 $ 28,710 $ 32,556 $ 3,616 $ 27,254 $ 30,870 Cash equivalents and Investments - book value $ 4,628 $ 29,418 $ 34,046 $ 5,304 $ 28,410 $ 33,714 Unrealized gains (losses) 1 (11 ) (10 ) 0 (21 ) (21 ) Cash equivalents and Investments - fair value $ 4,629 $ 29,407 $ 34,036 $ 5,304 $ 28,389 $ 33,693
Summary of Inventories	Inventories consisted of the following: December 31, 2019 December 31, 2018 Raw materials $ 6,502 $ 7,023 Work in process 913 1,388 Finished goods 4,520 4,437 Inventories, net $ 11,935 $ 12,848
Summary of Property and Equipment	Property and equipment consisted of the following: December 31, 2019 December 31, 2018 Building $ 6,389 $ 6,351 Computers and office equipment 9,847 10,963 Manufacturing and test equipment 14,192 13,573 Furniture and fixtures 1,314 1,318 Leasehold improvements 2,850 1,529 Motor vehicles 20 20 Total property and equipment 34,612 33,754 Less: Accumulated depreciation and amortization (24,397 ) (23,386 ) Land 1,770 1,770 Property and equipment, net $ 11,985 $ 12,138
Summary of Accrued Liabilities	Accrued liabilities consisted of the following: December 31, 2019 December 31, 2018 Short-term incentive plan $ 2,553 $ 0 Payroll and other employee benefits 1,605 1,409 Inventory receipts 1,431 1,396 Paid time off 855 936 Leasehold improvements 702 0 Warranties 444 339 Operating leases 282 0 Professional fees and contractors 246 346 Deferred revenues 241 149 Employee stock purchase plan 228 343 Real estate taxes 152 148 Customer refunds for estimated returns 147 154 Income and sales taxes 133 186 Finance leases 77 91 Restructuring 45 33 Other 241 271 Total $ 9,382 $ 5,801
Summary of Long-term Liabilities	Long-term liabilities consisted of the following: December 31, 2019 December 31, 2018 Operating leases $ 3,021 $ 0 Finance leases 164 132 Deferred revenue 119 87 Other 11 162 Total $ 3,315 $ 381

Earnings (Loss) per Share (Tabl

Earnings (Loss) per Share (Tables)	12 Months Ended
	Dec. 31, 2019
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Share	The following table provides a reconciliation of the numerators and denominators used in calculating basic and diluted earnings per share: Years Ended December 31, 2019 2018 Basic Income (Loss) Per Share computation: Numerator: Net income (loss) $ 3,750 $ (12,889 ) Denominator: Common shares outstanding 17,852,968 17,185,657 Net Income (Loss) per common share - basic Net income (loss) $ 0.21 $ (0.75 ) Diluted Income (Loss) Per Share computation: Denominator: Common shares outstanding 17,852,968 17,185,657 Performance related awards 191,247 * Restricted shares subject to vesting 113,188 * Common stock option grants 1,256 * Total shares 18,158,659 17,185,657 Income (Loss) per common share - diluted Net income (loss) $ 0.21 $ (0.75 ) * As denoted by “*” in the table above, weighted average common stock option grants and restricted shares of 360,591 was excluded from the calculations of diluted net loss per share for the year ended December 31, 2018, since the effect was anti-dilutive.

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Other Intangible Assets	The summary of other intangible assets, net is as follows: December 31, 2019 December 31, 2018 Accumulated Net Book Accumulated Net Book Cost Amortization Value Cost Amortization Value Customer contracts and relationships $ 16,880 $ 16,880 $ 0 $ 16,880 $ 16,880 $ 0 Patents and technology 10,114 10,003 111 10,114 9,336 778 Trademarks and trade names 4,834 4,801 33 4,834 4,607 227 Other 2,506 2,506 0 2,506 2,482 24 $ 34,334 $ 34,190 $ 144 $ 34,334 $ 33,305 $ 1,029
Summary of Assigned Lives and Weighted Average Amortization Periods by Intangible Asset Category	The assigned lives and weighted average amortization periods by intangible asset category are summarized below: Intangible Assets Assigned Life Weighted Average Amortization Period Customer contracts and relationships 5 years 5.0 Patents and technology 5 to 6 years 5.1 Trademarks and trade names 5 to 6 years 5.6 Other 1 to 6 years 3.0
Schedule of Expected Amortization Expense	The Company’s amortization expense for intangible assets is scheduled through the first quarter 2020 as follows: Fiscal Year Amount 2020 $ 144

Restructuring (Tables)

Restructuring (Tables)	12 Months Ended
	Dec. 31, 2019
Restructuring And Related Activities [Abstract]
Summary of Restructuring Charges	The following table summarizes the Company’s restructuring accrual activity for the years ended December 31, 2019, and 2018: Severance Lease Termination Total Balance at January 1, 2018 $ 0 $ 116 $ 116 Payments made 0 (128 ) (128 ) Payments received 0 89 89 Balance at December 31, 2018 $ 0 $ 77 $ 77 Restructuring expense 507 0 507 Payments made (495 ) (143 ) (638 ) Payments received 0 99 99 Balance at December 31, 2019 $ 12 $ 33 $ 45
Schedule of Restructuring Liability Recorded	The restructuring liability is recorded on the balance sheet at December 31, 2019 and 2018 as follows: December 31, 2019 December 31, 2018 Accrued liabilities $ 45 $ 33 Long-term liabilities 0 44 $ 45 $ 77
Summary of Minimum Lease Payments and Sublease Payments Under Lease Agreements	The following table summarizes the minimum lease payments and sublease payments under the lease agreements for the Colorado office: Lease Payments Lease Payments 92 Sublease Payments (59 ) 33

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Components of Income (Loss) Before Expense for Income Taxes	The domestic and foreign components of the income (loss) before expense for income taxes were as follows: Years Ended December 31, 2019 2018 Domestic $ 4,250 $ (5,033 ) Foreign (460 ) (29 ) $ 3,790 $ (5,062 )
Summary of Expense for Income Taxes	The expense for income taxes consisted of the following: Years Ended December 31, 2019 2018 Current: Federal $ 0 $ 0 State 40 32 Foreign 0 (22 ) 40 10 Deferred: Federal 0 6,337 State 0 1,333 Foreign 0 147 0 7,817 Total $ 40 $ 7,827
Reconciliation of Expense for Income Taxes	A reconciliation of the expense for income taxes at the federal statutory rate compared to the expense at the effective tax rate is as follows: Years Ended December 31 2019 2018 Statutory federal income tax rate 21 % 21 % State income tax, net of federal benefit 7 % 4 % Tax effect of permanent differences 3 % -1 % Change in valuation allowance -25 % -182 % Effective state rate change to deferred tax assets -1 % 1 % Stock-based compensation shortfalls 3 % -2 % Research and development credits -8 % 4 % Other 1 % 0 % 1 % -155 %
Summary of Net Deferred Tax Accounts	The net deferred tax accounts consist of the following: December 31, 2019 2018 Deferred Tax Assets: Net operating loss carryforwards $ 4,759 $ 5,725 Amortization 3,500 3,920 Federal, foreign, and state credits 2,086 1,812 Inventory reserves 1,159 982 Stock compensation 494 982 Deferred gain 870 875 Accrued vacation 220 240 Other 563 235 Gross deferred tax assets 13,651 14,771 Valuation allowance (13,490 ) (14,457 ) Net deferred tax asset 161 314 Deferred Tax Liabilities: Depreciation (161 ) (314 ) Net Deferred Tax Assets $ 0 $ 0
Schedule of Unrecognized Tax Benefits	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows: December 31, 2019 2018 Beginning of period $ 730 $ 700 Addition related to tax positions in current year 45 30 Reversals for uncertain tax positions (16 ) 0 End of period $ 759 $ 730

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2019
Commitments And Contingencies Disclosure [Abstract]
Summary of Warranty Activity	Year Ended December 31, 2019 2018 Beginning balance $ 339 $ 382 Provisions for warranties 435 65 Consumption of reserves (330 ) (108 ) Ending balance $ 444 $ 339

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Components of Lease Cost	The Company's lease cost for the year ended December 31, 2019 included the following components: Year ended December 31, 2019 Operating lease costs $ 963 Short-term lease costs 92 Variable lease costs 27 Amortization of finance lease assets 99 Interest on finance lease liabilities 9 Total lease cost $ 1,190
Schedule of Future Minimum Lease Payments under Operating and Finance Leases	The table below summarizes the Company's scheduled future minimum lease payments under operating and finance leases recorded on the balance sheet as of December 31, 2019: Year Operating Leases Finance Leases 2020 $ 306 $ 84 2021 472 73 2022 558 48 2023 569 32 2024 581 21 Thereafter 3,174 0 Total minimum payments required 5,660 258 Less: present value of tenant allowance 1,002 0 Less: amount representing interest 1,355 17 Present value of net minimum lease payments 3,303 241 Less: current maturities of lease obligations (282 ) (77 ) Long-term lease obligations $ 3,021 $ 164
Summary of Weighted Average Remaining Lease Terms and Discount Rates	The weighted average remaining lease terms and discount rates for all the Company’s operating and finance leases were as follows as of December 31, 2019: December 31, 2019 Weighted-average remaining lease term - finance leases 3.6 years Weighted-average remaining lease term - operating leases 9.7 years Weighted-average discount rate - finance leases 4% Weighted-average discount rate - operating leases 5%
Schedule of Classification of ROU Assets and Lease liabilities	The table below presents supplemental balance sheet information related to leases during the year ended December 31, 2019: Leases Consolidated Balance Sheet Classification December 31, 2019 Assets: Operating right-of-use assets Other noncurrent assets $ 2,696 Finance right-of-use assets Other noncurrent assets 234 Total lease assets $ 2,930 Liabilities: Current Operating lease liabilities Accrued liabilities $ 282 Finance lease liabilities Accrued liabilities 77 Noncurrent Operating lease liabilities Long-term liabilities 3,021 Finance lease liabilities Long-term liabilities 164 Total lease liabilities $ 3,544
Present Value of Net Minimum Lease Payments, Capital Leases	In accordance with the disclosure requirements for the adoption of Topic 842, the Company is presenting the operating lease commitments table under Topic 840 as of December 31, 2018. The following table is unchanged from the disclosure in Note 7 in the 2018 Form 10-K: Year Amount 2019 $ 98 2020 61 2021 48 2022 23 2023 7 Total minimum payments required 237 Less: amount representing interest 14 Present value of net minimum lease payments $ 223

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2019
Equity [Abstract]
Summary of Activity Related to Common Shares Outstanding	The activity related to common shares outstanding is as follows: Years Ended December 31, 2019 2018 Beginning of year 18,271,249 17,806,792 Issuance of common stock on exercise of stock options 73,680 0 Restricted stock awards, net of cancellations 189,578 343,810 Director share awards 79,918 71,143 Issuance of common stock from purchase of Employee Stock Purchase Plan shares 180,859 156,795 Cancellation of stock for withholding tax for vested shares (183,995 ) (107,291 ) End of Year 18,611,289 18,271,249

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2019
Summary of Reserved Shares of Common Stock for Future Issuance	A summary of the reserved shares of common stock for future issuance are as follows: December 31, Stock Plan 2019 2018 PCTEL, Inc. 2019 Stock Incentive Plan 2,240,669 0 PCTEL, Inc. 2015 Stock Incentive Plan 489,136 2,160,154 PCTEL, Inc. 2019 Employee Stock Purchase Plan 1,800,000 0 PCTEL, Inc. 2014 Employee Stock Purchase Plan 0 194,814 Total shares reserved 4,529,805 2,354,968
Summary of Stock-Based Compensation Expense by Type	The stock-based compensation expense by type is as follows: Years Ended December 31, 2019 2018 Service-based awards $ 1,963 $ 2,618 Director awards 402 422 Performance-based awards - long-term incentive plan 226 0 Performance-based awards - short-term incentive plan 1,335 0 Employee stock purchase plan 205 216 Stock options 2 5 Total $ 4,133 $ 3,261
Stock-Based Compensation	The stock-based compensation is reflected in the consolidated statements of operations as follows: Years Ended December 31, 2019 2018 Cost of revenues $ 408 $ 224 Research and development 652 620 Sales and marketing 672 576 General and administrative 2,401 1,841 Total $ 4,133 $ 3,261 The following table presents a summary of the remaining unrecognized share-based compensation expense related to our outstanding share-based awards as of December 31, 2019: Award Type Remaining Unrecognized Compensation Expense Weighted Average Life (Years) Service-based awards $ 1,643 1.3 Performance-based awards $ 678 2.0 Stock options $ 1 1.1
Summary of Stock Option Activity	The following table summarizes the Company’s stock option activity: Years Ended December 31, 2019 2018 Options Outstanding Weighted Average Exercise Price Options Outstanding Weighted Average Exercise Price Beginning of Year 423,534 $ 7.15 470,484 $ 7.24 Options granted 0 0.00 2,000 6.98 Options exercised (154,409 ) 7.18 0 0.00 Options forfeited 0 0.00 (2,793 ) 5.13 Options cancelled/expired (118,879 ) 7.16 (46,157 ) 8.21 End of Year 150,246 $ 7.11 423,534 $ 7.15 Exercisable 147,394 $ 7.13 417,385 $ 7.17
Information about Stock Options Outstanding Under all Stock Plans	The following table summarizes information about stock options outstanding under all stock option plans: Options Outstanding Options Exercisable Range of Exercise Prices Number Outstanding Weighted Average Contractual Life (Years) Weighted- Average Exercise Price Number Exercisable Weighted Average Exercise Price $ 5.00 — $ 5.06 8,500 5.04 $ 5.05 6,738 $ 5.05 $ 6.84 — $ 6.98 4,500 5.15 $ 6.90 3,410 $ 6.88 $ 7.16 84,541 0.27 $ 7.16 84,541 $ 7.16 $ 7.22 40,205 0.26 $ 7.22 40,205 $ 7.22 $ 7.31 — $ 8.32 12,500 1.27 $ 7.86 12,500 $ 7.86 $ 5.00 — $ 8.32 150,246 0.61 $ 7.11 147,394 $ 7.13
Weighted Average Contractual Life and Intrinsic Value of the Options Outstanding and Options Exercisable	The weighted average contractual life and intrinsic value at December 31, 2019, was the following: Weighted Average Contractual Life (years) Intrinsic Value Options Outstanding 0.61 $ 205 Options Exercisable 0.54 $ 197
Calculation of Fair Value of Stock Option Grant Using Black-Scholes Option-Pricing Model	The Company did not grant any stock options during 2019. The Company calculated the fair value of the 2018 stock options granted on the date of grant using the Black-Scholes option-pricing model based upon the following assumptions: 2018 Dividend yield 3.2% Risk-free interest rate 2.4% Expected volatility 33% Expected life (in years) 3.7
Summary of Performance Share Activity	The following table summarizes the performance award activity: Years Ended December 31, 2019 2018 Unvested Performance Awards - at Target Awards Weighted Average Fair Value Awards Weighted Average Fair Value Beginning of Year 0 $ 0.00 110,500 $ 7.49 Awards Granted 174,117 5.27 0 0.00 Awards vested 0 0.00 0 0.00 Units cancelled (2,680 ) 5.27 (110,500 ) 7.49 End of Year 171,437 5.27 0 $ 0.00
Summary of ESSP Activity	The following table summarizes the ESPP activity: Years Ended December 31, 2019 2018 Shares Weighted Average Fair Value at Grant Date Shares Weighted Average Fair Value at Grant Date Outstanding, beginning of year 0 $ 0.00 0 $ 0.00 Granted 180,859 1.08 156,795 1.49 Vested (180,859 ) 1.08 (156,795 ) 1.49 Outstanding, end of year 0 $ 0.00 0 $ 0.00
Calculation of Fair Value of Each Employee Stock Purchase Grant Under ESPP Using Black-Scholes Option-Pricing Model	The Company calculated the fair value of each employee stock purchase grant under the ESPP on the date of grant using the Black-Scholes option-pricing model using the following assumptions: Employee Stock Purchase Plan 2019 2018 Dividend yield 4.1 % 3.2 % Risk-free interest rate 2.5 % 2.1 % Expected volatility 34 % 33 % Expected life (in years) 0.5 0.5
Summary of Director Awards Activity	The following table summarizes the director awards activity: Years Ended December 31, 2019 2018 Shares Weighted Average Fair Value at Grant Date Shares Weighted Average Fair Value at Grant Date Outstanding, beginning of year 7,246 $ 6.90 0 $ 0.00 Granted 79,918 5.03 71,143 6.63 Vested (82,333 ) (5.08 ) (63,897 ) (6.60 ) Outstanding, end of year 4,831 $ 6.90 7,246 $ 6.90
Restricted Stock [Member]
Summary of Service-based Restricted Stock Activity	The following table summarizes service-based restricted stock activity: Years ended December 31, 2019 2018 Unvested Restricted Stock Awards Shares Weighted Average Fair Value Shares Weighted Average Fair Value Beginning of year 838,967 $ 6.21 828,576 $ 5.66 Shares awarded 190,159 5.25 486,975 6.92 Shares vested (538,137 ) 5.96 (392,975 ) 5.93 Shares cancelled (13,802 ) 6.27 (83,609 ) 6.14 End of year 477,187 $ 6.11 838,967 $ 6.21
Restricted Stock Units [Member]
Summary of Service-based Restricted Stock Activity	The following summarizes the service-based restricted stock unit activity: Years Ended December 31, 2019 2018 Unvested Restricted Stock Units Shares Weighted Average Fair Value Shares Weighted Average Fair Value Beginning of year 18,638 $ 5.66 31,800 $ 5.47 Units awarded 2,700 5.27 5,500 7.05 Units vested/Shares awarded (13,221 ) 5.35 (11,587 ) 5.35 Units cancelled 0 0 (7,075 ) 6.90 End of year 8,117 $ 5.83 18,638 $ 5.66

Product Line, Customer and Ge_2

Product Line, Customer and Geographic Information (Tables)	12 Months Ended
	Dec. 31, 2019
Result of Product Line Revenues and Gross Profits	Product Line Information: The following tables are the product line revenues and gross profits for the years ended December 31, 2019, and 2018: Year Ended December 31, 2019 Antenna Products Test & Measurement Corporate Total Revenues $ 62,708 $ 28,115 $ (206 ) $ 90,617 Gross Profit $ 21,841 $ 19,640 $ 31 $ 41,512 Gross Profit % 34.8 % 69.9 % NA 45.8 % Year Ended December 31, 2018 Antenna Products Test & Measurement Corporate Total Revenues $ 66,328 $ 16,733 $ (82 ) $ 82,979 Gross Profit $ 20,157 $ 10,883 $ 41 $ 31,081 Gross Profit % 30.4 % 65.0 % NA 37.5 %
Customers Accounted Revenues by Geographic Location	The Company’s revenue to customers by geographic location, as a percent of total revenues, is as follows: Years Ended December 31, Region 2019 2018 Europe, Middle East, & Africa 14 % 12 % Asia Pacific 10 % 15 % Other Americas 3 % 4 % Total Foreign sales 27 % 31 % Total Domestic sales 73 % 69 % 100 % 100 %
Long-lived Assets by Geographic Region	The long-lived assets by geographic region are as follows: December 31, 2019 2018 United States $ 17,485 $ 15,153 All Other 945 1,391 $ 18,430 $ 16,544
Trade Accounts Receivable [Member]
Schedule of Revenues and Total Trade Accounts Receivable Represents Customers Accounted for 10% or More Percentage	The following table represents the customers that accounted for 10% or more of total trade accounts receivable at December 31, 2019 and 2018. As of December 31, Trade Accounts Receivable 2019 2018 Customer A 15% 9% Customer B 11% 1% Customer C 8% 13%

Benefit Plans (Tables)

Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2019
Compensation And Retirement Disclosure [Abstract]
Summary of Contributions to Retirement Plans	The Company’s contributions to retirement plans were as follows: Years ended December 31, 2019 2018 PCTEL, Inc. 401(k) profit sharing plan - US employees $ 645 $ 681 Defined contribution plans - foreign employees 444 527 Total $ 1,089 $ 1,208

Quarterly Data (Unaudited) (Tab

Quarterly Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Information	Quarters Ended, March 31, June 30, September 30, December 31, 2019 2019 2019 2019 Revenues $ 20,590 $ 23,499 $ 23,630 $ 22,898 Gross profit 8,658 10,694 10,647 11,513 Operating income (loss) (469 ) 629 941 1,707 Income (loss) before income taxes (307 ) 949 1,334 1,814 Net income (loss) $ (317 ) $ 941 $ 1,328 $ 1,798 Net income (loss) per share: Basic $ (0.02 ) $ 0.05 $ 0.07 $ 0.10 Diluted $ (0.02 ) $ 0.05 $ 0.07 $ 0.10 Weighted Average Shares: Basic 17,617,099 17,827,591 17,921,552 18,033,548 Diluted 17,617,099 17,934,141 18,181,157 18,460,503 Quarters Ended, March 31, June 30, September 30, December 31, 2018 2018 2018 2018 Revenues $ 21,731 $ 21,582 $ 18,426 $ 21,240 Gross profit 7,864 7,799 6,721 8,697 Operating loss (1,221 ) (1,602 ) (2,378 ) (425 ) Loss before income taxes (1,170 ) (1,393 ) (2,152 ) (347 ) Net loss $ (858 ) $ (1,226 ) $ (1,670 ) $ (9,135 ) Net loss per share: Basic $ (0.05 ) $ (0.07 ) $ (0.10 ) $ (0.53 ) Diluted $ (0.05 ) $ (0.07 ) $ (0.10 ) $ (0.53 ) Weighted Average Shares: Basic 17,055,659 17,142,318 17,234,187 17,361,255 Diluted 17,055,659 17,142,318 17,234,187 17,361,255

Organization and Summary of S_4

Organization and Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	1 Months Ended		3 Months Ended	12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Aug. 31, 2019	Jan. 01, 2019	Jan. 01, 2018
Nature Of Operations [Line Items]
Net foreign exchange gains (losses) resulting from foreign currency transactions included in other income				$ 100,000	$ (100,000)
Cash and cash equivalents maturities				90 days	90 days
Investment of cash equivalents are redeemable upon demand using amortized cost method				$ 1
Investment in money market funds restricted by investment in short term securities, percentage				100.00%
Net unrealized losses				$ 10,000	$ 21,000
Allowance for doubtful accounts				104,000	63,000
Consigned inventory with customers				300,000	900,000
Allowance for inventory losses				3,400,000	3,300,000
Depreciation and amortization				2,900,000	2,800,000
Advertising expense				$ 200,000	$ 100,000
Most likely than not benefit likelihood percentage being realized upon ultimate settlement with taxing authority resulting from sustainability of tax examination				50.00%
Statutory federal income tax rate				21.00%	21.00%	34.00%
Indefinite carryforward of net operating losses annual limitation against future income, percentage				80.00%
Deferred tax asset, valuation allowance				$ 13,490,000	$ 14,457,000
Impairment of long-lived assets				0	$ 0
Cumulative-effect adjustment to retained earnings						$ 92,000
Right of Use Asset				2,696,000			$ 2,100,000
Lease Liability				$ 3,303,000
Retained Earnings [Member]
Nature Of Operations [Line Items]
Cumulative-effect adjustment to retained earnings						$ 92,000
ASU No. 2016-16 [Member] | Retained Earnings [Member]
Nature Of Operations [Line Items]
Cumulative-effect adjustment to retained earnings									$ 100,000
ASU 2016-02 [Member]
Nature Of Operations [Line Items]
Right of Use Asset								$ 1,500,000
Lease Liability								$ 1,600,000
Test & Measurement Product Line [Member]
Nature Of Operations [Line Items]
Goodwill impairment test				October 31, 2019
Goodwill acquired	$ 3,300,000
Test & Measurement Product Line [Member] | Product [Member]
Nature Of Operations [Line Items]
Goodwill impairment test					October 31, 2018
Goodwill acquired		$ 3,300,000
Equipment [Member]
Nature Of Operations [Line Items]
Period over which assets are depreciated				5 years
Furniture and Fixtures [Member]
Nature Of Operations [Line Items]
Period over which assets are depreciated				7 years
Building [Member]
Nature Of Operations [Line Items]
Period over which assets are depreciated				30 years
Level 3 [Member]
Nature Of Operations [Line Items]
Investments				$ 0	$ 0
Israel [Member]
Nature Of Operations [Line Items]
Cash in foreign bank				200,000
Foreign earnings repatriated			$ 200,000
China [Member]
Nature Of Operations [Line Items]
Cash in foreign bank				2,100,000	$ 600,000
Maximum [Member]
Nature Of Operations [Line Items]
Federal Deposit Insurance Corporation insured limit				$ 250,000
Standard term of accounts receivable				90 days
Useful lives of the assets				1 year
Maximum [Member] | Computer Equipment [Member]
Nature Of Operations [Line Items]
Period over which assets are depreciated				5 years
Minimum [Member]
Nature Of Operations [Line Items]
Standard term of accounts receivable				30 days
Minimum [Member] | Computer Equipment [Member]
Nature Of Operations [Line Items]
Period over which assets are depreciated				3 years

Organization and Summary of S_5

Organization and Summary of Significant Accounting Policies - Cash and Cash Equivalents and Investments (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Cash And Cash Equivalents [Abstract]
Cash	$ 5,604	$ 1,485
Cash equivalents	1,490	2,844
Short-term investments	32,556	30,870
Cash and investments	$ 39,650	$ 35,199

Organization and Summary of S_6

Organization and Summary of Significant Accounting Policies - Cash Equivalents and Investments Measured at Fair Value (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	$ 1,490	$ 2,844
Investments	32,556	30,870
Cash equivalents and Investments - book value	34,046	33,714
Unrealized gains (losses)	(10)	(21)
Cash equivalents and Investments - fair value	34,036	33,693
Corporate Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	708	1,156
Investments	28,710	21,583
Money Market Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	782	1,688
U.S. Government Agency Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	0	5,671
Certificates of Deposit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	3,846	3,616
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	782	1,688
Investments	3,846	3,616
Cash equivalents and Investments - book value	4,628	5,304
Unrealized gains (losses)	1	0
Cash equivalents and Investments - fair value	4,629	5,304
Level 1 [Member] | Corporate Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Investments	0	0
Level 1 [Member] | Money Market Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	782	1,688
Level 1 [Member] | U.S. Government Agency Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	0	0
Level 1 [Member] | Certificates of Deposit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	3,846	3,616
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	708	1,156
Investments	28,710	27,254
Cash equivalents and Investments - book value	29,418	28,410
Unrealized gains (losses)	(11)	(21)
Cash equivalents and Investments - fair value	29,407	28,389
Level 2 [Member] | Corporate Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	708	1,156
Investments	28,710	21,583
Level 2 [Member] | Money Market Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Level 2 [Member] | U.S. Government Agency Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	0	5,671
Level 2 [Member] | Certificates of Deposit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	$ 0	$ 0

Organization and Summary of S_7

Organization and Summary of Significant Accounting Policies - Summary of Inventories (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Inventory Net [Abstract]
Raw materials	$ 6,502	$ 7,023
Work in process	913	1,388
Finished goods	4,520	4,437
Inventories, net	$ 11,935	$ 12,848

Organization and Summary of S_8

Organization and Summary of Significant Accounting Policies - Summary of Property and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 34,612	$ 33,754
Less: Accumulated depreciation and amortization	(24,397)	(23,386)
Land	1,770	1,770
Property and equipment, net	11,985	12,138
Building [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	6,389	6,351
Computers and Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	9,847	10,963
Manufacturing and Test Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	14,192	13,573
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	1,314	1,318
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	2,850	1,529
Motor Vehicles [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 20	$ 20

Organization and Summary of S_9

Organization and Summary of Significant Accounting Policies - Summary of Accrued Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Payables And Accruals [Abstract]
Short-term incentive plan	$ 2,553	$ 0
Payroll and other employee benefits	1,605	1,409
Inventory receipts	1,431	1,396
Paid time off	855	936
Leasehold improvements	702	0
Warranties	444	339
Operating leases	282	0
Professional fees and contractors	246	346
Deferred revenues	241	149
Employee stock purchase plan	228	343
Real estate taxes	152	148
Customer refunds for estimated returns	147	154
Income and sales taxes	133	186
Finance leases	77	91
Restructuring	45	33
Other	241	271
Total	$ 9,382	$ 5,801

Organization and Summary of _10

Organization and Summary of Significant Accounting Policies - Summary of Long-term Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Liabilities Noncurrent [Abstract]
Operating leases	$ 3,021	$ 0
Finance leases	164	132
Deferred revenue	119	87
Other	11	162
Total	$ 3,315	$ 381

Earnings (Loss) per Share - Com

Earnings (Loss) per Share - Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Numerator:
Net income (loss)	$ 1,798	$ 1,328	$ 941	$ (317)	$ (9,135)	$ (1,670)	$ (1,226)	$ (858)	$ 3,750	$ (12,889)
Denominator:
Common shares outstanding	18,033,548	17,921,552	17,827,591	17,617,099	17,361,255	17,234,187	17,142,318	17,055,659	17,852,968	17,185,657
Net Income (Loss) per common share - basic
Net income (loss)	$ 0.10	$ 0.07	$ 0.05	$ (0.02)	$ (0.53)	$ (0.10)	$ (0.07)	$ (0.05)	$ 0.21	$ (0.75)
Weighted Average Shares:
Common shares outstanding	18,033,548	17,921,552	17,827,591	17,617,099	17,361,255	17,234,187	17,142,318	17,055,659	17,852,968	17,185,657
Common stock option grants									1,256
Total shares	18,460,503	18,181,157	17,934,141	17,617,099	17,361,255	17,234,187	17,142,318	17,055,659	18,158,659	17,185,657
Income (Loss) per common share - diluted
Net income (loss)	$ 0.10	$ 0.07	$ 0.05	$ (0.02)	$ (0.53)	$ (0.10)	$ (0.07)	$ (0.05)	$ 0.21	$ (0.75)
Performance Related Awards [Member]
Weighted Average Shares:
Performance related awards/Restricted shares subject to vesting									191,247
Restricted Stock [Member]
Weighted Average Shares:
Performance related awards/Restricted shares subject to vesting									113,188

Earnings (Loss) per Share - C_2

Earnings (Loss) per Share - Computation of Basic and Diluted Earnings Per Share (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2018shares
Earnings Per Share [Abstract]
Antidilutive shares excluded	360,591

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Finite Lived Intangible Assets [Line Items]
Change in goodwill	$ 0	$ 0
Goodwill	3,332,000	3,332,000
Amortization of intangible assets	885,000	1,084,000
Continuing Operations [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets	900,000	1,100,000
Operating Expense [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets	200,000	400,000
Cost of Revenues [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 700,000	$ 700,000
Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets basis over estimated useful lives	1 year
Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets basis over estimated useful lives	6 years

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Summary of Other Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Finite Lived Intangible Assets [Line Items]
Cost	$ 34,334	$ 34,334
Accumulated Amortization	34,190	33,305
Net Book Value	144	1,029
Customer Contracts and Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Cost	16,880	16,880
Accumulated Amortization	16,880	16,880
Net Book Value	0	0
Patents and Technology [Member]
Finite Lived Intangible Assets [Line Items]
Cost	10,114	10,114
Accumulated Amortization	10,003	9,336
Net Book Value	111	778
Trademarks and Trade Names [Member]
Finite Lived Intangible Assets [Line Items]
Cost	4,834	4,834
Accumulated Amortization	4,801	4,607
Net Book Value	33	227
Other [Member]
Finite Lived Intangible Assets [Line Items]
Cost	2,506	2,506
Accumulated Amortization	2,506	2,482
Net Book Value	$ 0	$ 24

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Summary of Assigned Lives and Weighted Average Amortization Periods by Intangible Asset Category (Detail)	12 Months Ended
	Dec. 31, 2019
Minimum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	1 year
Maximum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	6 years
Customer Contracts and Relationships [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	5 years
Weighted Average Amortization Period	5 years
Patents and Technology [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Weighted Average Amortization Period	5 years 1 month 6 days
Patents and Technology [Member] | Minimum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	5 years
Patents and Technology [Member] | Maximum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	6 years
Trademarks and Trade Names [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Weighted Average Amortization Period	5 years 7 months 6 days
Trademarks and Trade Names [Member] | Minimum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	5 years
Trademarks and Trade Names [Member] | Maximum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	6 years
Other [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Weighted Average Amortization Period	3 years
Other [Member] | Minimum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	1 year
Other [Member] | Maximum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	6 years

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets - Schedule of Expected Amortization Expense (Detail) $ in Thousands	Dec. 31, 2019USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2020	$ 144

Restructuring - Summary of Rest

Restructuring - Summary of Restructuring Charges (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost And Reserve [Line Items]
Beginning balance	$ 77	$ 116
Restructuring expenses	507	0
Payments made	(638)	(128)
Payments received	99	89
Ending balance	45	77
Severance [Member]
Restructuring Cost And Reserve [Line Items]
Beginning balance	0	0
Restructuring expenses	507
Payments made	(495)	0
Payments received	0	0
Ending balance	12	0
Lease Terminations [Member]
Restructuring Cost And Reserve [Line Items]
Beginning balance	77	116
Restructuring expenses	0
Payments made	(143)	(128)
Payments received	99	89
Ending balance	$ 33	$ 77

Restructuring - Summary of Re_2

Restructuring - Summary of Restructuring Liability Recorded (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost And Reserve [Line Items]
Restructuring liability	$ 45	$ 77	$ 116
Discontinued Operations [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring liability	45	77
Discontinued Operations [Member] | Accrued Liabilities [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring liability	45	33
Discontinued Operations [Member] | Long-term Liabilities [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring liability	$ 0	$ 44

Restructuring - Additional Info

Restructuring - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)Employee	Dec. 31, 2019USD ($)Employee	Dec. 31, 2018USD ($)
Restructuring Cost And Reserve [Line Items]
Restructuring expenses | $		$ 507	$ 0
China Restructuring [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring and related activities, initiation date		Aug. 7, 2019
Restructuring expenses | $		$ 500
China Restructuring [Member] | Tianjin [Member]
Restructuring Cost And Reserve [Line Items]
Number of employees separation | Employee		84
China Restructuring [Member] | Scenario Forecast [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring expenses | $	$ 400
China Restructuring [Member] | Minimum [Member] | Scenario Forecast [Member]
Restructuring Cost And Reserve [Line Items]
Number of employees separation | Employee	40
China Restructuring [Member] | Maximum [Member] | Scenario Forecast [Member]
Restructuring Cost And Reserve [Line Items]
Number of employees separation | Employee	50

Restructuring - Summary of Mini

Restructuring - Summary of Minimum Lease Payments and Sublease Payments Under Lease Agreements (Detail) - Colorado Office [Member] $ in Thousands	Dec. 31, 2019USD ($)
Lease Payments
Lease Payments	$ 92
Sublease Payments	(59)
Total	$ 33

Income Taxes - Components of In

Income Taxes - Components of Income (Loss) Before Expense for Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments [Abstract]
Domestic									$ 4,250	$ (5,033)
Foreign									(460)	(29)
INCOME (LOSS) BEFORE INCOME TAXES	$ 1,814	$ 1,334	$ 949	$ (307)	$ (347)	$ (2,152)	$ (1,393)	$ (1,170)	$ 3,790	$ (5,062)

Income Taxes - Summary of Expen

Income Taxes - Summary of Expense for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal	$ 0	$ 0
State	40	32
Foreign	0	(22)
Gross	40	10
Deferred:
Federal	0	6,337
State	0	1,333
Foreign	0	147
Gross	0	7,817
Total	$ 40	$ 7,827

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Expense for Income Taxes (Detail)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Effective Income Tax Rate Continuing Operations Tax Rate Reconciliation [Abstract]
Statutory federal income tax rate	21.00%	21.00%	34.00%
State income tax, net of federal benefit	7.00%	4.00%
Tax effect of permanent differences	3.00%	(1.00%)
Change in valuation allowance	(25.00%)	(182.00%)
Effective state rate change to deferred tax assets	(1.00%)	1.00%
Stock-based compensation shortfalls	3.00%	(2.00%)
Research and development credits	(8.00%)	4.00%
Other	1.00%	0.00%
Total	1.00%	(155.00%)

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Line Items]
Income tax expense (benefit)		$ 40	$ 7,827
Adjustments of deferred tax valuation allowance			(9,200)
Offsetting net income tax expense related to remeasurement of net deferred tax assets			8,900
Income tax expense related to the transition tax			$ 300
Statutory rate		21.00%	21.00%	34.00%
Indefinite carryforward of net operating losses annual limitation against future income, percentage		80.00%
Increase in deferred tax assets on transition tax	$ 100
Designed to tax global intangible low taxed income, minimum percentage return on depreciable tangible assets.		10.00%
Gross deferred tax assets	14,771	$ 13,651	$ 14,771
Deferred tax asset, valuation allowance	14,457	13,490	14,457
Deferred tax liabilities	300	200	300
Net deferred tax assets	0	$ 0	0
Acquired intangible asset amortization period for tax purpose		15 years		15 years
Deferred tax asset		$ 3,500
Domestic deferred tax assets ratable reversal pattern period		12 years
Operating loss and credit carry forward, expiration period		The Company’s net operating losses and credits have a finite life primarily based on the 20-year carryforward rule for federal net operating losses (NOLs) generated as of December 31, 2017.
Net operating loss carry forward period		20 years
Pre-tax profit		$ 100
Cumulative terms of US book income turned to loss		3 years
Period of increase or decrease in unrecognized tax benefits		12 months
Domestic Tax Authority [Member]
Income Tax Disclosure [Line Items]
Deferred tax asset, valuation allowance		$ 13,100
Net deferred tax assets	14,200	13,100	$ 14,200
Operating Loss Carry forwards		8,100
Operating loss carry forwards expiration year			2031
Operating loss carry forwards expiration year			2037
Domestic Tax Authority [Member] | Research Tax Credit Carryforward [Member]
Income Tax Disclosure [Line Items]
Tax credit carry forwards		$ 1,300
Tax credit carry forwards expiration year		2030
Tax credit carry forwards expiration year		2039
Domestic Tax Authority [Member] | 2031 and 2037 [Member]
Income Tax Disclosure [Line Items]
Operating Loss Carry forwards		$ 9,000
Foreign [Member]
Income Tax Disclosure [Line Items]
Deferred tax asset, valuation allowance		500
Net deferred tax assets	$ 300	500	$ 300
Operating Loss Carry forwards		$ 100
Operating loss carry forwards expiration year		2025
Foreign [Member] | Research Tax Credit Carryforward [Member]
Income Tax Disclosure [Line Items]
Tax credit carry forwards		$ 200
Tax credit carry forwards expiration year		2024
Tax credit carry forwards expiration year		2025
State and Local Jurisdiction [Member]
Income Tax Disclosure [Line Items]
Operating Loss Carry forwards		$ 17,800
Operating loss carry forwards expiration year		2021
Operating loss carry forwards expiration year		2038
State and Local Jurisdiction [Member] | Research Tax Credit Carryforward [Member]
Income Tax Disclosure [Line Items]
Tax credit carry forwards		$ 1,500

Income Taxes - Summary of Net D

Income Taxes - Summary of Net Deferred Tax Accounts (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred Tax Assets:
Net operating loss carryforwards	$ 4,759	$ 5,725
Amortization	3,500	3,920
Federal, foreign, and state credits	2,086	1,812
Inventory reserves	1,159	982
Stock compensation	494	982
Deferred gain	870	875
Accrued vacation	220	240
Other	563	235
Gross deferred tax assets	13,651	14,771
Valuation allowance	(13,490)	(14,457)
Net deferred tax asset	161	314
Deferred Tax Liabilities:
Depreciation	(161)	(314)
Net Deferred Tax Assets	$ 0	$ 0

Income Taxes - Reconciliation_2

Income Taxes - Reconciliation of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Reconciliation Of Unrecognized Tax Benefits Excluding Amounts Pertaining To Examined Tax Returns Roll Forward
Beginning of period	$ 730	$ 700
Addition related to tax positions in current year	45	30
Reversals for uncertain tax positions	(16)	0
End of period	$ 759	$ 730

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Commitments And Contingencies Disclosure [Line Items]
Refund liability	$ 147	$ 154
Warranties	444	339
Warranty Reserves [Member]
Commitments And Contingencies Disclosure [Line Items]
Refund liability	100	200
Warranties	$ 444	$ 339	$ 382
Warranty Reserves [Member] | Antenna [Member]
Commitments And Contingencies Disclosure [Line Items]
Repair and replacement warranty	5 years

Commitments and Contingencies_2

Commitments and Contingencies - Summary of Warranty Activity (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Changes in warranty reserves
Beginning balance	$ 339
Ending balance	444	$ 339
Warranty Reserves [Member]
Changes in warranty reserves
Beginning balance	339	382
Provisions for warranties	435	65
Consumption of reserves	(330)	(108)
Ending balance	$ 444	$ 339

Leases - Additional Information

Leases - Additional Information (Detail) $ in Thousands	1 Months Ended	12 Months Ended
	Jan. 31, 2019ft²	Dec. 31, 2019USD ($)	Aug. 31, 2019USD ($)	Jan. 01, 2019USD ($)
Leases [Line Items]
Total right-of-use assets		$ 2,930		$ 1,500
Total lease liabilities		3,544		$ 1,600
Operating right-of-use assets		2,696	$ 2,100
Tenant improvement incentives in form of cash reimbursements		$ 1,002
Rent abatement duration		14 months
Lease description	In January 2019, the Company entered into an eleven-year lease ending February 28, 2031 for 21,030 square feet of office space in Clarksburg, Maryland for the Company’s test & measurement product line. The Company moved the operations for its test & measurement product line from its Germantown, Maryland office in January 2020.
Maximum [Member]
Leases [Line Items]
Tenant improvement incentives in form of cash reimbursements		$ 1,500
Test & Measurement Product Line [Member]
Leases [Line Items]
Operating lease term of contract	11 years
Area of lease | ft²	21,030
Lease expiration date	Feb. 28, 2031

Leases - Components of Lease Co

Leases - Components of Lease Cost (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Leases [Abstract]
Operating lease costs	$ 963
Short-term lease costs	92
Variable lease costs	27
Amortization of finance lease assets	99
Interest on finance lease liabilities	9
Total lease cost	$ 1,190

Leases - Schedule of Future Min

Leases - Schedule of Future Minimum Lease Payments under Operating and Finance Leases (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Operating Leases
2020	$ 306
2021	472
2022	558
2023	569
2024	581
Thereafter	3,174
Total minimum payments required	5,660
Less: present value of tenant allowance	1,002
Less: amount representing interest	1,355
Present value of net minimum lease payments	3,303
Less: current maturities of lease obligations	(282)	$ 0
Long-term lease obligations	3,021	0
Finance Leases
2020	84
2021	73
2022	48
2023	32
2024	21
Thereafter	0
Total minimum payments required	258
Less: present value of tenant allowance	0
Less: amount representing interest	17
Present value of net minimum lease payments	241
Less: current maturities of lease obligations	(77)	(91)
Long-term lease obligations	$ 164	$ 132

Leases - Summary of Weighted Av

Leases - Summary of Weighted Average Remaining Lease Terms and Discount Rates (Detail)	Dec. 31, 2019
Leases [Abstract]
Weighted-average remaining lease term - finance leases	3 years 7 months 6 days
Weighted-average remaining lease term - operating leases	9 years 8 months 12 days
Weighted-average discount rate - finance leases	4.00%
Weighted-average discount rate - operating leases	5.00%

Leases - Schedule of Classifica

Leases - Schedule of Classification of ROU Assets and Lease liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Aug. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
ASSETS
Operating right-of-use assets	$ 2,696	$ 2,100
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssetsNoncurrent
Finance right-of-use assets	$ 234
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssetsNoncurrent
Total lease assets	$ 2,930		$ 1,500
Current
Operating lease liabilities	$ 282			$ 0
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccruedLiabilitiesCurrent
Finance lease liabilities	$ 77			91
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccruedLiabilitiesCurrent
Noncurrent
Operating lease liabilities	$ 3,021			0
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:LiabilitiesNoncurrent
Finance lease liabilities	$ 164			$ 132
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:LiabilitiesNoncurrent
Total lease liabilities	$ 3,544		$ 1,600

Leases - Present Value of Net M

Leases - Present Value of Net Minimum Lease Payments, Capital Leases (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Leases [Abstract]
2019	$ 98
2020	61
2021	48
2022	23
2023	7
Total minimum payments required	237
Less: amount representing interest	14
Present value of net minimum lease payments	$ 223

Shareholders' Equity - Summary

Shareholders' Equity - Summary of Activity Related to Common Shares Outstanding (Detail) - shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Equity [Abstract]
Common stock shares outstanding, Beginning balance	18,271,249	17,806,792
Issuance of common stock on exercise of stock options	73,680	0
Restricted stock awards, net of cancellations	189,578	343,810
Director share awards	79,918	71,143
Issuance of common stock from purchase of Employee Stock Purchase Plan shares	180,859	156,795
Cancellation of stock for withholding tax for vested shares	(183,995)	(107,291)
Common stock shares outstanding, End of Year	18,611,289	18,271,249

Shareholders' Equity - Addition

Shareholders' Equity - Additional Information (Detail) - $ / shares	Dec. 31, 2019	Dec. 31, 2018
Equity [Abstract]
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of the Reserved Shares of Common Stock for Future Issuance (Detail) - shares	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	4,529,805	2,354,968
PCTEL, Inc. 2019 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	2,240,669	0
PCTEL, Inc. 2015 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	489,136	2,160,154
PCTEL, Inc. 2019 Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	1,800,000	0
PCTEL, Inc. 2014 Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	0	194,814

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock Incentive Plans - Additional Information (Detail) - 2019 Stock Plan [Member] shares in Thousands	12 Months Ended
	Dec. 31, 2019shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate number of shares that may be issued	2,213,000
Number of shares available in plan to be issued	27,669

Stock-Based Compensation - Empl

Stock-Based Compensation - Employee Stock Purchase Plan - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of fair market value to determine purchase price	85.00%
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares that may be issued	1,800,000,000

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock compensation expense	$ 4,133,000	$ 3,261,000
Capitalize stock compensation expense	$ 0	$ 0

Stock-Based Compensation - Su_2

Stock-Based Compensation - Summary of Stock-Based Compensation Expense by Type (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Stock Based Compensation [Line Items]
Total	$ 4,133	$ 3,261
Service-based Awards [Member]
Stock Based Compensation [Line Items]
Total	1,963	2,618
Director Awards [Member]
Stock Based Compensation [Line Items]
Total	402	422
Performance-based Awards - Long-term Incentive Plan [Member]
Stock Based Compensation [Line Items]
Total	226	0
Performance-based Awards - Short-term Incentive Plan [Member]
Stock Based Compensation [Line Items]
Total	1,335	0
Employee Stock Purchase Plan [Member]
Stock Based Compensation [Line Items]
Total	205	216
Stock Options [Member]
Stock Based Compensation [Line Items]
Total	$ 2	$ 5

Stock-Based Compensation - St_2

Stock-Based Compensation - Stock-Based Compensation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock compensation expense	$ 4,133	$ 3,261
Cost of Revenues [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock compensation expense	408	224
Research and Development [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock compensation expense	652	620
Sales and Marketing [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock compensation expense	672	576
General and Administrative [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock compensation expense	$ 2,401	$ 1,841

Stock-Based Compensation - Su_3

Stock-Based Compensation - Summary of Remaining Unrecognized Share-based Compensation Expense Related to Outstanding Share-based Awards (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Service-based Awards [Member]
Stock Based Compensation [Line Items]
Remaining unrecognized share-based compensation expense	$ 1,643
Share based compensation arrangement by share based payment award options weighted average life in years	1 year 3 months 18 days
Performance-based Awards [Member]
Stock Based Compensation [Line Items]
Remaining unrecognized share-based compensation expense	$ 678
Share based compensation arrangement by share based payment award options weighted average life in years	2 years
Stock Options [Member]
Stock Based Compensation [Line Items]
Remaining unrecognized share-based compensation expense	$ 1
Share based compensation arrangement by share based payment award options weighted average life in years	1 year 1 month 6 days

Stock-Based Compensation - Rest

Stock-Based Compensation - Restricted Stock Units - Service-Based - Additional Information (Detail) - USD ($) shares in Thousands, $ in Thousands	1 Months Ended	12 Months Ended
	Feb. 28, 2019	Dec. 31, 2019	Dec. 31, 2018
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants vesting period		3 years	3 years
Service Based Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards issued during the period	190,159
Stock award vesting term	Company issued to employees 190,159 service-based restricted stock awards that vest in three substantially equal annual increments commencing in 2020.
Restricted shares vested grant date intrinsic value		$ 3,300	$ 2,200
Service Based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares vested grant date intrinsic value		$ 97	$ 61

Stock-Based Compensation - Su_4

Stock-Based Compensation - Summary of Service-based Restricted Stock Activity (Detail) - Restricted Stock [Member] - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested Beginning balance, Shares	838,967	828,576
Shares awarded, Shares	190,159	486,975
Shares vested, Shares	(538,137)	(392,975)
Shares cancelled, Shares	(13,802)	(83,609)
Unvested Ending balance, Shares	477,187	838,967
Unvested Beginning balance, Weighted Average Fair Value	$ 6.21	$ 5.66
Shares awarded, Weighted Average Fair Value	5.25	6.92
Shares vested, Weighted Average Fair Value	5.96	5.93
Shares cancelled, Weighted Average Fair Value	6.27	6.14
Unvested Ending balance, Weighted Average Fair Value	$ 6.11	$ 6.21

Stock-Based Compensation - Su_5

Stock-Based Compensation - Summary of Service-based Restricted Stock Unit Activity (Detail) - Restricted Stock Units [Member] - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested Beginning balance, Shares	18,638	31,800
Units awarded, Shares	2,700	5,500
Units vested/Shares awarded, Shares	(13,221)	(11,587)
Shares cancelled, Shares	0	(7,075)
Unvested Ending balance, Shares	8,117	18,638
Unvested Beginning balance, Weighted Average Fair Value	$ 5.66	$ 5.47
Units awarded, Weighted Average Fair Value	5.27	7.05
Units vested/Shares awarded, Weighted Average Fair Value	5.35	5.35
Units cancelled, Weighted Average Fair Value	0	6.90
Unvested Ending balance, Weighted Average Fair Value	$ 5.83	$ 5.66

Stock-Based Compensation - St_3

Stock-Based Compensation - Stock Options - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercised	73,680	0
Intrinsic value based on share price	$ 8.47
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock options vesting provisions, description	Employee options are subject to installment vesting typically over a period of four years.
Options vested in remaining period	4 years
Period of termination of employment	180 days
Stock options granted period	10 years
Options exercised	154,409	0
Intrinsic value	$ 0.2
Options Outstanding, Granted	0	2,000
Lower range of exercise prices	$ 5
Upper range of exercise prices	$ 8.32
Period of expected life, options granted	5 years
Stock Options [Member] | Stock Option Plan One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from options exercised	$ 0.5
Options exercised	62,909	0
Stock Options [Member] | Stock Option Plan Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercised	91,500
Shares issued	10,771

Stock-Based Compensation - Su_6

Stock-Based Compensation - Summary of Stock Option Activity (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Summary Of Stock Option Activities [Line Items]
Options Outstanding, Exercised	(73,680)	0
Stock Options [Member]
Summary Of Stock Option Activities [Line Items]
Options Outstanding, Beginning balance, Shares	423,534	470,484
Options Outstanding, Granted	0	2,000
Options Outstanding, Exercised	(154,409)	0
Options Outstanding, Forfeited	0	(2,793)
Options Outstanding, Cancelled/expired	(118,879)	(46,157)
Options Outstanding, Ending balance, Shares	150,246	423,534
Options Exercisable, Ending balance, Shares	147,394	417,385
Options Outstanding, Beginning balance, Weighted Average Exercise Price	$ 7.15	$ 7.24
Weighted Average Exercise Price, Granted	0	6.98
Weighted Average Exercise Price, Exercised	7.18	0
Weighted Average Exercise Price, Forfeited	0	5.13
Weighted Average Exercise Price, Expired or Cancelled	7.16	8.21
Options Outstanding, Ending balance, Weighted Average Exercise Price	7.11	7.15
Options Outstanding, Exercisable at End of Year, Weighted Average Exercise Price	$ 7.13	$ 7.17

Stock-Based Compensation - Info

Stock-Based Compensation - Information about Stock Options Outstanding Under all Stock Plans (Detail)	12 Months Ended
	Dec. 31, 2019$ / sharesshares
Range One [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range of exercise prices	$ 5
Upper range of exercise prices	$ 5.06
Options Outstanding, Number | shares	8,500
Options Outstanding, Weighted Average Contractual Life (Years)	5 years 14 days
Options Outstanding, Weighted-Average Exercise Price	$ 5.05
Options Exercisable, Number | shares	6,738
Options Exercisable, Weighted Average Exercise Price	$ 5.05
Range Two [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range of exercise prices	6.84
Upper range of exercise prices	$ 6.98
Options Outstanding, Number | shares	4,500
Options Outstanding, Weighted Average Contractual Life (Years)	5 years 1 month 24 days
Options Outstanding, Weighted-Average Exercise Price	$ 6.90
Options Exercisable, Number | shares	3,410
Options Exercisable, Weighted Average Exercise Price	$ 6.88
Range Three [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise prices	$ 7.16
Options Outstanding, Number | shares	84,541
Options Outstanding, Weighted Average Contractual Life (Years)	3 months 7 days
Options Outstanding, Weighted-Average Exercise Price	$ 7.16
Options Exercisable, Number | shares	84,541
Options Exercisable, Weighted Average Exercise Price	$ 7.16
Range Four [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise prices	$ 7.22
Options Outstanding, Number | shares	40,205
Options Outstanding, Weighted Average Contractual Life (Years)	3 months 3 days
Options Outstanding, Weighted-Average Exercise Price	$ 7.22
Options Exercisable, Number | shares	40,205
Options Exercisable, Weighted Average Exercise Price	$ 7.22
Range Five [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range of exercise prices	7.31
Upper range of exercise prices	$ 8.32
Options Outstanding, Number | shares	12,500
Options Outstanding, Weighted Average Contractual Life (Years)	1 year 3 months 7 days
Options Outstanding, Weighted-Average Exercise Price	$ 7.86
Options Exercisable, Number | shares	12,500
Options Exercisable, Weighted Average Exercise Price	$ 7.86
Range Six [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range of exercise prices	5
Upper range of exercise prices	$ 8.32
Options Outstanding, Number | shares	150,246
Options Outstanding, Weighted Average Contractual Life (Years)	7 months 9 days
Options Outstanding, Weighted-Average Exercise Price	$ 7.11
Options Exercisable, Number | shares	147,394
Options Exercisable, Weighted Average Exercise Price	$ 7.13

Stock-Based Compensation - Weig

Stock-Based Compensation - Weighted Average Contractual Life and Intrinsic Value of Options Outstanding (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Share Based Compensation Arrangement By Share Based Payment Award Options Additional Disclosures [Abstract]
Options Outstanding Weighted Average Contractual Life (years)	7 months 9 days
Options Exercisable Weighted Average Contractual Life (years)	6 months 14 days
Options Outstanding Intrinsic Value	$ 205
Options Exercisable Intrinsic Value	$ 197

Stock-Based Compensation - Calc

Stock-Based Compensation - Calculation of Fair Value of Each Option Grant Using Black-Scholes Option-Pricing Model (Detail) - Stock Options [Member]	12 Months Ended
	Dec. 31, 2018
Calculation of fair value of each option grant using the Black-Scholes option-pricing model
Dividend yield	3.20%
Risk-free interest rate	2.40%
Expected volatility	33.00%
Expected life (in years)	3 years 8 months 12 days

Stock-Based Compensation - Shor

Stock-Based Compensation - Short-Term Incentive Plan - Additional Information (Detail) - 2019 STIP [Member] - shares shares in Millions	12 Months Ended
	Dec. 31, 2019	Mar. 31, 2020	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Issued			0
Certain Executives [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of incentive awards in shares	50.00%
Percentage of incentive awards in cash	50.00%
Scenario Forecast [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Issued		1.2

Stock-Based Compensation - Su_7

Stock-Based Compensation - Summary of Performance Share Activity (Detail) - Performance Related Awards [Member] - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested Beginning balance, Shares	0	110,500
Awards Granted	174,117	0
Awards vested	0	0
Units cancelled	(2,680)	(110,500)
Unvested Ending balance, Shares	171,437	0
Unvested Beginning balance, Weighted Average Fair Value	$ 0	$ 7.49
Shares awarded, Weighted Average Fair Value	5.27	0
Shares vested, Weighted Average Fair Value	0	0
Units cancelled, Weighted Average Fair Value	5.27	7.49
Unvested Ending balance, Weighted Average Fair Value	$ 5.27	$ 0

Stock-Based Compensation - Long

Stock-Based Compensation - Long-Term Incentive Plan - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
	Feb. 28, 2019	Dec. 31, 2019	Dec. 31, 2018
Performance Based Equity Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested awards cancelled			88,000
Performance Based Equity Awards | Terminated Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested awards cancelled			22,500
2019 LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Revenue growth target performance period	3 years
Revenue growth target performance period start date	Jan. 1, 2019
Revenue growth target performance period end date	Dec. 31, 2021
Total fair market value of award at target	$ 0.9
Shares awarded, Weighted Average Fair Value	$ 5.27
Number of shares earned	174,117,000	2,680,000
Maximum number of shares that may be issued	300,015,000
Maximum number of earned shares declined		4,690,000
Two Thousand Fifteen Long Term Incentive Plan | Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Revenue growth target performance period			4 years

Stock-Based Compensation - Su_8

Stock-Based Compensation - Summary of ESSP Activity (Detail) - Employee Stock Purchase Plan [Member] - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]
Options Outstanding, Beginning balance, Shares	0	0
Units awarded, Shares	180,859	156,795
Units vested/Shares awarded, Shares	(180,859)	(156,795)
Options Outstanding, Ending balance, Shares	0	0
Options Outstanding, Beginning balance, Weighted Average Exercise Price	$ 0	$ 0
Shares granted, Weighted Average Grant Date Fair Value	1.08	1.49
Units vested/Shares awarded, Weighted Average Fair Value	1.08	1.49
Options Outstanding, Ending balance, Weighted Average Exercise Price	$ 0	$ 0

Stock-Based Compensation - Em_2

Stock-Based Compensation - Employee Stock Purchase Plan ("ESPP") - Additional Information (Detail) - Employee Stock Purchase Plan [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Rate of discount on fair market value of common stock under ESPP	15.00%
Company received proceeds	$ 0.7	$ 0.7
Period of expected life, options granted	5 years

Stock-Based Compensation - Ca_2

Stock-Based Compensation - Calculation of Fair Value of Stock Option Grant Under ESPP Using Black-Scholes Option-Pricing Model (Detail) - Employee Stock Purchase Plan [Member]	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Calculation of fair value of each employee stock purchase grant using the Black-Scholes option-pricing model
Dividend yield	4.10%	3.20%
Risk-free interest rate	2.50%	2.10%
Expected volatility	34.00%	33.00%
Expected life (in years)	6 months	6 months

Stock-Based Compensation - Boar

Stock-Based Compensation - Board of Director Equity Awards - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Director share awards	79,918	71,143
Board of Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Director share awards	79,918	63,897
Company's stock at fair value	$ 400	$ 400
One New Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Director share awards		7,246
Company's stock at fair value		$ 50
Service Based Restricted Stock [Member] | One New Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants vesting period	3 years
Service Based Restricted Stock [Member] | New Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants vesting period	3 years
Equity awards granted	$ 55

Stock-Based Compensation - Su_9

Stock-Based Compensation - Summary of Director Awards Activity (Detail) - Board of Directors [Member] - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]
Options Outstanding, Beginning balance, Shares	7,246	0
Shares awarded, Shares	79,918	71,143
Shares vested, Shares	(82,333)	(63,897)
Options Outstanding, Ending balance, Shares	4,831	7,246
Options Outstanding, Beginning balance, Weighted Average Exercise Price	$ 6.90	$ 0
Shares awarded, Weighted Average Fair Value	5.03	6.63
Shares vested, Weighted Average Fair Value	(5.08)	(6.60)
Options Outstanding, Ending balance, Weighted Average Exercise Price	$ 6.90	$ 6.90

Stock-Based Compensation - Em_3

Stock-Based Compensation - Employee Withholding Taxes on Stock Awards - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payment of withholding taxes related to stock awards	$ 1,152	$ 578
Employee Withholding Taxes on Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payment of withholding taxes related to stock awards	$ 1,200	$ 600

Stock-Based Compensation - Shar

Stock-Based Compensation - Share Repurchases - Additional Information (Detail) - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Dec. 31, 2019	Nov. 06, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Repurchase of common stock	0
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program, authorized amount		$ 7

Product Line, Customer and Ge_3

Product Line, Customer and Geographic Information - Result of Product Line Revenues and Gross Profits (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Results of operations by segments
Revenues	$ 22,898	$ 23,630	$ 23,499	$ 20,590	$ 21,240	$ 18,426	$ 21,582	$ 21,731	$ 90,617	$ 82,979
Gross Profit	$ 11,513	$ 10,647	$ 10,694	$ 8,658	$ 8,697	$ 6,721	$ 7,799	$ 7,864	$ 41,512	$ 31,081
Gross Profit %									45.80%	37.50%
Operating Segments [Member] | Antenna Products [Member]
Results of operations by segments
Revenues									$ 62,708	$ 66,328
Gross Profit									$ 21,841	$ 20,157
Gross Profit %									34.80%	30.40%
Operating Segments [Member] | Test & Measurement Product Line [Member]
Results of operations by segments
Revenues									$ 28,115	$ 16,733
Gross Profit									$ 19,640	$ 10,883
Gross Profit %									69.90%	65.00%
Corporate, Non-Segment [Member]
Results of operations by segments
Revenues									$ (206)	$ (82)
Gross Profit									$ 31	$ 41

Product Line, Customer and Ge_4

Product Line, Customer and Geographic Information - Schedule of Revenues and Total Trade Accounts Receivable Represents Customer Accounted for 10% or More Percentage (Detail) - Customer Concentration Risk [Member] - Trade Accounts Receivable [Member]	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Customer A [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk percentage	15.00%	9.00%
Customer B [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk percentage	11.00%	1.00%
Customer C [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk percentage	8.00%	13.00%

Product Line, Customer and Ge_5

Product Line, Customer and Geographic Information - Customers Accounted Revenues by Geographic Location (Detail) - Sales [Member] - Geographic Concentration Risk [Member]	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	100.00%	100.00%
Europe, Middle East, & Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	14.00%	12.00%
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	10.00%	15.00%
Other Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	3.00%	4.00%
Total Foreign Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	27.00%	31.00%
Total Domestic Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	73.00%	69.00%

Product Line, Customer and Ge_6

Product Line, Customer and Geographic Information - Long-lived Assets by Geographic Region (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Geographic And Business Segment Information [Line Items]
Long-Lived Assets	$ 18,430	$ 16,544
United States [Member]
Geographic And Business Segment Information [Line Items]
Long-Lived Assets	17,485	15,153
All Other [Member]
Geographic And Business Segment Information [Line Items]
Long-Lived Assets	$ 945	$ 1,391

Benefit Plans - Additional Info

Benefit Plans - Additional Information (Detail) - Employee Benefit Plans [Member] - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Maximum percentage of current compensation of employee to contribute in plan	15.00%
Percentage of matching contributions by the Company to employee's contributions to 401(k) plan	100.00%
Discretionary contributions to the 401(k) plan	$ 0	$ 0
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer matches employee contribution percentage	4.00%

Benefit Plans - Summary of Cont

Benefit Plans - Summary of Contributions to Retirement Plans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Contribution to retirement plans	$ 1,089	$ 1,208
US Employees [Member]
Defined Benefit Plan Disclosure [Line Items]
Contribution to retirement plans	645	681
Foreign Employees [Member]
Defined Benefit Plan Disclosure [Line Items]
Contribution to retirement plans	$ 444	$ 527

Quarterly Data - Schedule of Qu

Quarterly Data - Schedule of Quarterly Financial Information (Unaudited) (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 22,898	$ 23,630	$ 23,499	$ 20,590	$ 21,240	$ 18,426	$ 21,582	$ 21,731	$ 90,617	$ 82,979
Gross profit	11,513	10,647	10,694	8,658	8,697	6,721	7,799	7,864	41,512	31,081
Operating income (loss)	1,707	941	629	(469)	(425)	(2,378)	(1,602)	(1,221)	2,808	(5,626)
Income (loss) before income taxes	1,814	1,334	949	(307)	(347)	(2,152)	(1,393)	(1,170)	3,790	(5,062)
Net income (loss)	$ 1,798	$ 1,328	$ 941	$ (317)	$ (9,135)	$ (1,670)	$ (1,226)	$ (858)	$ 3,750	$ (12,889)
Net income (loss) per share:
Basic	$ 0.10	$ 0.07	$ 0.05	$ (0.02)	$ (0.53)	$ (0.10)	$ (0.07)	$ (0.05)	$ 0.21	$ (0.75)
Diluted	$ 0.10	$ 0.07	$ 0.05	$ (0.02)	$ (0.53)	$ (0.10)	$ (0.07)	$ (0.05)	$ 0.21	$ (0.75)
Weighted Average Shares:
Basic	18,033,548	17,921,552	17,827,591	17,617,099	17,361,255	17,234,187	17,142,318	17,055,659	17,852,968	17,185,657
Diluted	18,460,503	18,181,157	17,934,141	17,617,099	17,361,255	17,234,187	17,142,318	17,055,659	18,158,659	17,185,657

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Accumulated other comprehensive losses	$ (0.3)	$ (0.2)

Revenue from Contracts with C_2

Revenue from Contracts with Customers - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disaggregation Of Revenue [Line Items]
Order shipments, description	A majority of the Company’s revenue is short cycle in nature with shipments within one year from order.
Payment terms, description	The Company's payment terms generally range between 30 to 90 days.
Refund liability	$ 147,000	$ 154,000
Contract assets	0	0
Contract with customer liability, revenue recognized	200,000	200,000
Accrued Liabilities [Member]
Disaggregation Of Revenue [Line Items]
Refund liability	100,000	200,000
Contract liability	200,000	200,000
Inventories [Member]
Disaggregation Of Revenue [Line Items]
Product return asset	$ 100,000	$ 100,000

Revenue from Contracts with C_3

Revenue from Contracts with Customers - Additional Information1 (Detail)	Dec. 31, 2019
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-01-01
Disaggregation Of Revenue [Line Items]
Period for performance obligation to provide software maintenance and support	1 year

Schedule II - Valuation and Q_2

Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	$ 63	$ 319
Charged to Costs and Expenses	(2)	265
Addition (Deductions)	43	(521)
Balance at End of Year	104	63
Warranty Reserves [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	339	382
Charged to Costs and Expenses	213	65
Addition (Deductions)	(108)	(108)
Balance at End of Year	444	339
Valuation Allowance of Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	14,457	5,234
Charged to Costs and Expenses	0	9,223
Addition (Deductions)	(967)	0
Balance at End of Year	$ 13,490	$ 14,457