PC Tel (PCTI) 10-Q 8 Nov 23 2023 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2023	Nov. 09, 2023
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2023
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Entity Registrant Name	PCTEL, Inc.
Entity Central Index Key	0001057083
Entity Incorporation, State or Country Code	DE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Title of 12(b) Security	Common Stock
Trading Symbol	PCTI
Security Exchange Name	NASDAQ
Entity File Number	000-27115
Entity Tax Identification Number	77-0364943
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
Entity Common Stock Shares Outstanding		19,353,641
Document Quarterly Report	true
Document Transition Report	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
ASSETS
Cash and cash equivalents	$ 3,546	$ 7,736
Short-term investment securities	29,770	22,254
Accounts receivable, net of allowances of $134 and $132 at September 30, 2023 and December 31, 2022, respectively	13,113	18,853
Inventories, net	16,497	18,918
Prepaid expenses and other assets	1,372	1,861
Total current assets	64,298	69,622
Property and equipment, net	9,552	10,004
Goodwill	5,837	5,935
Intangible assets, net	772	1,045
Other noncurrent assets	2,689	3,269
TOTAL ASSETS	83,148	89,875
LIABILITIES AND STOCKHOLDERS’ EQUITY
Accounts payable	5,039	4,648
Accrued liabilities	7,362	12,605
Total current liabilities	12,401	17,253
Long-term liabilities	3,266	3,624
Total liabilities	15,667	20,877
Stockholders’ equity:
Common stock, $0.001 par value, 50,000,000 shares authorized at September 30, 2023 and December 31, 2022, and 19,258,299 and 18,748,529 shares issued and outstanding at September 30, 2023 and December 31, 2022, respectively	19	19
Additional paid-in capital	128,239	128,370
Accumulated deficit	(58,867)	(57,941)
Accumulated other comprehensive loss	(1,910)	(1,450)
Total stockholders’ equity	67,481	68,998
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 83,148	$ 89,875

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) (unaudited) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Allowance for accounts receivable	$ 134	$ 132
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	19,258,299	18,748,529
Common stock, shares outstanding	19,258,299	18,748,529

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
REVENUES	$ 17,385	$ 25,988	$ 60,936	$ 73,506
COST OF REVENUES	9,773	14,052	31,697	40,810
GROSS PROFIT	7,612	11,936	29,239	32,696
OPERATING EXPENSES:
Research and development	2,881	3,178	8,995	9,784
Sales and marketing	2,487	3,600	9,268	10,910
General and administrative	2,504	3,705	8,964	10,399
Amortization of intangible assets	61	63	188	201
Restructuring expenses	0	57	0	1,309
Total operating expenses	7,933	10,603	27,415	32,603
OPERATING (LOSS) INCOME	(321)	1,333	1,824	93
Other income, net	288	205	855	330
(LOSS) INCOME BEFORE INCOME TAXES	(33)	1,538	2,679	423
Expense (Benefit) for income taxes	77	(434)	466	(396)
NET (LOSS) INCOME	$ (110)	$ 1,972	$ 2,213	$ 819
Net (Loss) Income per Share:
Basic	$ (0.01)	$ 0.11	$ 0.12	$ 0.05
Diluted	$ (0.01)	$ 0.11	$ 0.12	$ 0.04
Weighted Average Shares:
Basic	18,817,294	18,165,611	18,642,704	18,098,694
Diluted	18,817,294	18,187,075	18,745,249	18,213,753

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive (Loss) Income (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
NET (LOSS) INCOME	$ (110)	$ 1,972	$ 2,213	$ 819
OTHER COMPREHENSIVE LOSS:
Foreign currency translation adjustments	(44)	(686)	(460)	(1,618)
COMPREHENSIVE (LOSS) INCOME	$ (154)	$ 1,286	$ 1,753	$ (799)

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Stockholders' Equity (unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid - In Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]
BALANCE at beginning of year at Dec. 31, 2021	$ 66,921	$ 18	$ 123,998	$ (56,735)	$ (360)
Stock-based compensation expense	3,007	1	3,006	0	0
Issuance of shares for stock purchase plans and stock options	404	0	404	0	0
Cancellation of shares for payment of withholding tax	(396)	0	(396)	0	0
Dividends paid	(3,048)	0	(3,048)	0	0
Net (loss) income	819	0	0	819	0
Change in cumulative translation adjustment, net	(1,618)	0	0	0	(1,618)
BALANCE at end of year at Sep. 30, 2022	66,089	19	123,964	(55,916)	(1,978)
BALANCE at beginning of year at Jun. 30, 2022	64,683	19	123,844	(57,888)	(1,292)
Stock-based compensation expense	1,147	0	1,147	0	0
Issuance of shares for stock purchase plans and stock options	0	0	0	0	0
Cancellation of shares for payment of withholding tax	0	0	0	0	0
Dividends paid	(1,027)	0	(1,027)	0	0
Net (loss) income	1,972	0	0	1,972	0
Change in cumulative translation adjustment, net	(686)	0	0	0	(686)
BALANCE at end of year at Sep. 30, 2022	66,089	19	123,964	(55,916)	(1,978)
BALANCE at beginning of year at Dec. 31, 2022	68,998	19	128,370	(57,941)	(1,450)
Stock-based compensation expense	219	0	219	0	0
Issuance of shares for stock purchase plans and stock options	362	0	362	0	0
Cancellation of shares for payment of withholding tax	(712)	0	(712)	0	0
Dividends paid	(3,139)	0	0	(3,139)	0
Net (loss) income	2,213	0	0	2,213	0
Change in cumulative translation adjustment, net	(460)	0	0	0	(460)
BALANCE at end of year at Sep. 30, 2023	67,481	19	128,239	(58,867)	(1,910)
BALANCE at beginning of year at Jun. 30, 2023	68,988	19	128,533	(57,698)	(1,866)
Stock-based compensation expense	(293)	0	(293)	0	0
Issuance of shares for stock purchase plans and stock options	0	0	0	0	0
Cancellation of shares for payment of withholding tax	(1)	0	(1)	0	0
Dividends paid	(1,059)	0	0	(1,059)	0
Net (loss) income	(110)	0	0	(110)	0
Change in cumulative translation adjustment, net	(44)	0	0	0	(44)
BALANCE at end of year at Sep. 30, 2023	$ 67,481	$ 19	$ 128,239	$ (58,867)	$ (1,910)

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) (unaudited) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Stockholders' Equity [Abstract]
Cash dividend per share	$ 0.055	$ 0.055	$ 0.165	$ 0.165

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Operating Activities:
Net income	$ 2,213	$ 819
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,630	2,231
Intangible asset amortization	240	257
Stock-based compensation	219	3,007
Loss on disposal of property and equipment	37	0
Restructuring costs	0	(291)
Bad debt provision	12	70
Changes in operating assets and liabilities:
Accounts receivable	5,669	(2,081)
Inventories	2,360	(3,402)
Prepaid expenses and other assets	768	574
Deferred tax assets	339	(484)
Accounts payable	492	974
Income taxes payable	(321)	15
Other accrued liabilities	(5,320)	(175)
Deferred revenue	27	(93)
Net cash provided by operating activities	8,365	1,421
Investing Activities:
Capital expenditures	(1,247)	(550)
Purchases of investments	(31,350)	(21,971)
Redemptions/maturities of short-term investments	23,834	22,386
Net cash (used in) provided by investing activities	(8,763)	(135)
Financing Activities:
Proceeds from issuance of common stock	362	404
Payment of withholding tax on stock-based compensation	(712)	(396)
Principal payments on finance leases	(52)	(48)
Cash dividends	(3,139)	(3,048)
Net cash used in financing activities	(3,541)	(3,088)
Net decrease in cash and cash equivalents	(3,939)	(1,802)
Effect of exchange rate changes on cash	(251)	(532)
Cash and cash equivalents, beginning of period	7,736	8,192
Cash and Cash Equivalents, End of Period	$ 3,546	$ 5,858

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	1. Basis of Presentation The accompanying unaudited interim condensed consolidated financial statements have been prepared in accordance with United States generally accepted accounting principles (“U.S. GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments of a normal, recurring nature that are considered necessary for a fair presentation have been included. For further information, refer to the audited consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022 (the “2022 Form 10-K”). Throughout this Quarterly Report on Form 10-Q, including under Part 1, Item 2, “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” we disclose certain impacts of the coronavirus (“COVID-19”) pandemic and the ensuing supply chain disruption, as well as macroeconomic trends, including inflationary pressures, an economic downturn and the potential for a recession. The full extent to which the COVID-19 pandemic and these macroeconomic trends will directly or indirectly impact the Company’s business, results of operations and financial condition will depend on future developments that remain highly uncertain at this time. Nature of Operations PCTEL, Inc. (“PCTEL” or “the Company”) was incorporated in California in 1994 and reincorporated in Delaware in 1998. The Company is a leading global provider of wireless technology, including purpose-built Industrial IoT devices, antenna systems, and test & measurement solutions. PCTEL strives to solve complex wireless challenges to help organizations stay connected, transform, and grow and it has expertise in radio frequency ("RF,"), digital, and mechanical engineering. The Company has two product lines (antennas & Industrial IoT devices and test & measurement products). The Company’s principal executive offices are located at 471 Brighton Drive, Bloomingdale, Illinois 60108. The telephone number at that address is (630) 372-6800 and the website is www.pctel.com. Additional information about the Company can be obtained on the Company’s website; however, the information within, or that can be accessed through, the Company’s website is not part of this Quarterly Report on Form 10-Q. Basis of Consolidation The unaudited interim condensed consolidated financial statements of the Company include the condensed consolidated balance sheets as of September 30, 2023 and December 31, 2022, and the condensed consolidated statement of cash flows, the condensed consolidated statements of operations, the condensed consolidated statements of comprehensive (loss) income, and the condensed consolidated statements of stockholders’ equity for the three and nine months ended September 30, 2023 and 2022, respectively. The interim condensed consolidated financial statements are unaudited and reflect all adjustments of a normal recurring nature that are, in the opinion of management, necessary for a fair presentation of the interim period financial statements. The condensed consolidated balance sheet as of December 31, 2022 is derived from the audited financial statements as of December 31, 2022. The unaudited interim condensed consolidated financial statements of the Company have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Accordingly, certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted. The significant accounting policies followed by the Company are set forth in the 2022 Form 10-K. There were no material changes in the Company’s significant accounting policies during the three and nine months ended September 30, 2023. In addition, the Company reaffirms the use of estimates in the preparation of the financial statements as set forth in the 2022 Form 10-K. These unaudited interim condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and notes thereto included in the 2022 Form 10-K. The results of operations for interim periods are not necessarily indicative of the results that may be expected for the full period or any other interim periods. Foreign Operations Cross-border transactions, both with external parties and in our internal operations, result in exposure to foreign exchange rate fluctuations. We are exposed to currency risk by having foreign locations with suppliers and employees located outside the U.S. Fluctuations could have an adverse effect on our results of operations, cash flows and our balance sheet. We manage certain operating activities at the local level with revenues, costs, assets, and liabilities generally being denominated in local currencies. However, our results of operations and assets and liabilities are reported in U.S. dollars and thus will fluctuate with changes in exchange rates between such local currencies and the U.S. dollar. Gains and losses resulting from transactions originally in foreign currencies and then translated into U.S. dollars are included in the condensed consolidated statements of operations. For the nine months ended September 30, 2023, approximately 13 % of revenues and 11 % of expenses were transacted in foreign currencies as compared to 11 % and 13 % for the nine months ended September 30, 2022. Net foreign exchange gains (losses) resulting from foreign currency transactions included in other income, net were ($ 56 ) and $ 114 for the three months ended September 30, 2023 and 2022, respectively. Net foreign exchange gains resulting from foreign currency transactions included in other income, net were $ 18 and $ 187 for the nine months ended September 30, 2023 and 2022, respectively. Recent Accounting Pronouncements In June 2022, the FASB issued ASU 2022-03, Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions. This update clarifies the guidance in Topic 820 on the fair value measurement of an equity security that is subject to contractual restrictions that prohibit the sale of the equity security. This update also requires specific disclosures related to such an equity security including (1) the fair value of such equity securities reflected in the balance sheet, (2) the nature and remaining duration of the corresponding restrictions, and (3) any circumstances that could cause a lapse in the restrictions. This ASU is effective for all public business entities in fiscal years beginning after December 15, 2023, and interim periods within those fiscal years, with early adoption permitted. The Company is currently evaluating the impact of this ASU on our consolidated financial statements and related disclosures.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2023
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	2. Fair Value of Financial Instruments The Company follows accounting guidance 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 is a financial asset with a carrying value that approximates fair value due to the short-term nature of these assets. Accounts payable, accrued employee compensation and certain operating liabilities are financial liabilities with a carrying value that approximates fair value due to the short-term nature of these liabilities.

(Loss) Income per Share

(Loss) Income per Share	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
(Loss) Income per Share	3. (Loss) Income per Share The following table is the computation of basic and diluted income per share: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Basic Income Per Share computation: Numerator: Net (loss) income $ ( 110 ) $ 1,972 $ 2,213 $ 819 Denominator: Weighted shares outstanding - basic 18,817,294 18,165,611 18,642,704 18,098,694 Net (loss) income per common share - basic $ ( 0.01 ) $ 0.11 $ 0.12 $ 0.05 Diluted Income Per Share computation: Denominator: Weighted shares outstanding - basic 18,817,294 18,165,611 18,642,704 18,098,694 Restricted shares subject to vesting 0 21,394 102,545 115,013 Common stock option grants 0 70 0 46 Weighted shares outstanding - diluted 18,817,294 18,187,075 18,745,249 18,213,753 Net (loss) income per common share - diluted $ ( 0.01 ) $ 0.11 $ 0.12 $ 0.04

Cash, Cash Equivalents and Inve

Cash, Cash Equivalents and Investments	9 Months Ended
	Sep. 30, 2023
Cash and Cash Equivalents [Abstract]
Cash, Cash Equivalents and Investments	4. Cash, Cash Equivalents and Investments The Company’s cash, cash equivalents, and investments consisted of the following: September 30, December 31, 2023 2022 Cash $ 2,880 $ 5,780 Cash equivalents 666 1,956 Short-term investments 29,770 22,254 Total $ 33,316 $ 29,990 Cash and Cash Equivalents At September 30, 2023 and December 31, 2022, cash and cash equivalents included bank balances and investments with original maturities of less than 90 days. At September 30, 2023 and December 31, 2022, the Company’s cash equivalents were invested in highly liquid AAA rated money market funds that are required to comply with Rule 2a-7 of 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 Company’s cash in U.S. banks is insured by the Federal Deposit Insurance Corporation up to the insurable limit of $ 250 . The cash in foreign accounts was as follows: September 30, December 31, 2023 2022 China $ 325 $ 2,672 Sweden 1,532 1,868 Total $ 1,857 $ 4,540 As of September 30, 2023, the Company has no intention of repatriating the cash in its foreign bank accounts. If the Company decides to repatriate the cash in the foreign bank accounts, it may have trouble doing so in a timely manner. The Company may also be exposed to foreign currency fluctuations and taxes if it repatriates these funds. Investments At September 30, 2023 and December 31, 2022, the Company’s investments consisted of corporate bonds with ratings at the purchase date of A or higher and certificates of deposit. The investments at September 30, 2023 and December 31, 2022 were classified as held-to-maturity. The bonds and certificates of deposit classified as short-term investments have original maturities greater than 90 days and mature within one year . The Company’s bond investments are recorded at the purchase price and carried at amortized cost. Under ASU 2016-13, the Company classifies its held-to-maturity investment portfolio by the investment type and further classifies the corporate bonds by the bond ratings. For estimating potential credit losses, the Company considers historical loss data and bond rating, as well as current and future economic conditions. Cash equivalents and investments were as follows at September 30, 2023 and December 31, 2022: September 30, 2023 December 31, 2022 Level 1 Level 2 Total Level 1 Level 2 Total Cash equivalents: Money market funds $ 666 $ 0 $ 666 $ 1,956 $ 0 $ 1,956 Total Cash Equivalents $ 666 $ 0 $ 666 $ 1,956 $ 0 $ 1,956 Short-Term Investments: Corporate bonds $ 0 $ 22,980 $ 22,980 $ 0 $ 21,145 $ 21,145 Certificates of deposit 6,790 0 6,790 1,109 0 1,109 Total Short-Term Investments $ 6,790 $ 22,980 $ 29,770 $ 1,109 $ 21,145 $ 22,254 Cash equivalents and Investments - book value $ 7,456 $ 22,980 $ 30,436 $ 3,065 $ 21,145 $ 24,210 Unrealized losses $ 0 $ ( 173 ) $ ( 173 ) $ 0 $ ( 59 ) $ ( 59 ) Cash equivalents and Investments - fair value $ 7,456 $ 22,807 $ 30,263 $ 3,065 $ 21,086 $ 24,151 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 2. For the Level 1 investments, the Company uses fair value estimates based on quoted prices in active markets for identical assets or liabilities. For the Level 2 investments, the Company uses quoted prices of similar assets in active markets. The fair values in the table above reflect net unrealizable losses of $ 173 and $ 59 at September 30, 2023 and December 31, 2022, respectively. The investments in foreign accounts were as follows: September 30, December 31, 2023 2022 China $ 2,331 $ 0 Sweden 1,661 0 Total $ 3,992 $ 0 As of September 30, 2023, the Company has no intention of repatriating the investments in its foreign investment accounts upon maturity. If the Company decides to repatriate the investment in the foreign investment accounts upon maturity, it may have trouble doing so in a timely manner. The Company may also be exposed to foreign currency fluctuations and taxes if it repatriates these funds.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	5. Goodwill and Intangible Assets Goodwill The change in the carrying amount of goodwill during the nine months ended September 30, 2023 is as follows: Amount Balance at December 31, 2022 $ 5,935 Foreign currency translation ( 98 ) Balance at September 30, 2023 $ 5,837 The Company performs an annual impairment test of goodwill as of the end of the first month of the fourth fiscal quarter (October 31), or at an interim date if an event occurs or if circumstances change that indicate that an impairment loss may have been incurred. In performing the annual impairment test, 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. In addition to the annual impairment test, the Company is required to regularly assess whether a triggering event has occurred which would require interim impairment testing. The Company considered the current and expected future economic and market conditions, including those related to the COVID-19 pandemic and their impact on each of the reporting units. Further, the Company assessed the current market capitalization and financial forecasts. There were no triggering events during the nine months ended September 30, 2023 or September 30, 2022. The Company will continue to monitor goodwill for impairment going forward. Intangible Assets The Company amortized intangible assets with finite lives on a straight-line basis over the estimated useful lives, which ranged from one to five years . The summary of amortization expense in the condensed consolidated statement of operations is as follows: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Cost of revenues $ 17 $ 17 $ 52 $ 56 Operating expenses 61 63 188 201 Total $ 78 $ 80 $ 240 $ 257 The summary of other intangible assets, net is as follows: September 30, 2023 December 31, 2022 Accumulated Net Book Accumulated Net Book Cost Amortization Value Cost Amortization Value Customer contracts and relationships $ 17,488 $ 17,174 $ 314 $ 17,512 $ 17,091 $ 421 Patents and technology 9,982 9,807 175 9,995 9,761 234 Trademarks and trade names 1,465 1,210 255 1,484 1,143 341 Other intangible assets 92 64 28 96 47 49 Total $ 29,027 $ 28,255 $ 772 $ 29,087 $ 28,042 $ 1,045 During the nine months ended September 30, 2023, the Company recorded amortization expense of $ 0.2 million and foreign currency translation adjustment of ($ 0.1 ) million. During the nine months ended September 30, 2022, the Company recorded amortization expense of $ 0.3 million and foreign currency translation adjustment of $ 0.2 million. The assigned lives and weighted average amortization periods by intangible asset category are summarized below: Intangible Assets Assigned Life Weighted Customer contracts and relationships 5 years 5.0 Patents and technology 5 years 5.0 Trademarks and trade names 5 years 5.0 Other intangible assets .5 to 5 years 3.6 The future amortization expenses are as follows: Fiscal Year Amount 2023 (remaining three months) $ 78 2024 301 2025 295 2026 98 Thereafter 0 Total $ 772

Balance Sheet Information

Balance Sheet Information	9 Months Ended
	Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Balance Sheet Information	6. Balance Sheet Information Accounts Receivable Accounts receivable are recorded at invoiced amounts with standard net terms that range between 30 and 90 days. The Company extends credit to its customers based on an evaluation of a customer’s financial condition and collateral is generally not required. The Company records reserves for credit losses and credit allowances that reduce the value of accounts receivable to fair value. The allowances for accounts receivable consisted of the following: September 30, 2023 December 31, 2022 Credit loss provision $ 110 $ 92 Credit allowances 24 40 Total allowances $ 134 $ 132 The Company is exposed to credit losses primarily through the sale of products. The Company’s methodology for expected losses on accounts receivable uses historical collection experience, current and future economic market conditions, and a review of the current status of customers’ trade accounts receivable. Due to the short-term nature of accounts receivable, the estimate of the amount of accounts receivable that may not be collected is based on aging of the account receivable balances and the financial condition of customers. Additionally, specific allowance amounts are established to record the appropriate provision for customers that have a higher probability of default. The Company’s monitoring activities include timely account reconciliation, dispute resolution, payment confirmation, consideration of customers' financial condition and macroeconomic conditions. Balances are written off when determined to be uncollectible. The Company’s allowance for credit losses was $ 110 at September 30, 2023 and $ 92 at December 31, 2022. The following table summarizes the allowance for credit losses activity during the nine months ended September 30, 2023: Balance at December 31, 2022 $ 92 Current period allowance for credit losses 18 Balance at September 30, 2023 $ 110 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 September 30, 2023 and December 31, 2022 were composed of raw materials, work-in-process and finished goods. The Company had consigned inventory with customers of $ 0.3 million and $ 0.2 million at September 30, 2023 and December 31, 2022, respectively. The Company records allowances to reduce the value of inventory to the lower of cost or net realizable value, including allowances for excess and obsolete inventory. Reserves for excess inventory are calculated based on an estimate of inventory in excess of normal and planned usage. Obsolete reserves are based on identification of inventory where the carrying value is above net realizable value. The allowance for inventory losses was $ 3.3 million at September 30, 2023 and $ 3.1 million at December 31, 2022. Inventories, net consisted of the following: September 30, 2023 December 31, 2022 Raw materials $ 8,083 $ 9,064 Work-in-process 1,288 1,076 Finished goods 7,126 8,778 Inventories, net $ 16,497 $ 18,918 Prepaid Expenses and Other 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 licenses 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 revenues and operating expenses in the condensed consolidated statements of operations. Maintenance and repairs are expensed as incurred. Property and equipment consisted of the following: September 30, 2023 December 31, 2022 Building $ 6,922 $ 6,922 Computers and office equipment 10,772 10,217 Manufacturing and test equipment 14,192 14,661 Furniture and fixtures 1,491 1,475 Leasehold improvements 1,965 1,965 Motor vehicles 20 20 Total property and equipment 35,362 35,260 Less: Accumulated depreciation and amortization ( 27,580 ) ( 27,026 ) Land 1,770 1,770 Property and equipment, net $ 9,552 $ 10,004 Depreciation and amortization expense was approximately $ 0.5 million and $ 0.7 million for the three months ended September 30, 2023 and 2022, respectively. Depreciation and amortization expense was approximately $ 1.6 million and $ 2.2 million for the nine months ended September 30, 2023 and 2022, respectively. Amortization for finance leases is included in depreciation and amortization expense. See Note 10 for information related to finance leases. Liabilities Accrued liabilities consisted of the following: September 30, 2023 December 31, 2022 Inventory receipts $ 2,024 $ 3,720 Paid time off 1,229 1,001 Payroll and other employee benefits 957 4,318 Professional fees and contractors 607 346 Deferred revenues 522 495 Operating leases 516 527 Employee stock purchase plan 434 232 Warranties 296 317 Income and sales taxes 227 836 Customer refunds for estimated returns 131 235 Real estate taxes 125 158 Finance leases 60 51 Other 234 369 Total $ 7,362 $ 12,605 Long-term liabilities consisted of the following: September 30, 2023 December 31, 2022 Operating leases $ 2,931 $ 3,327 Deferred revenue 173 181 Finance leases 129 73 Other 33 43 Total $ 3,266 $ 3,624

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]
Stock-Based Compensation	7. Stock-Based Compensation The condensed consolidated statements of operations include ($ 0.3 ) million and $ 1.1 million of stock compensation expense for the three months ended September 30, 2023 and 2022, respectively. The condensed consolidated statements of operations include $ 0.2 million and $ 3.0 million of stock compensation expense for the nine months ended September 30, 2023 and 2022, respectively. Stock compensation expense was lower during the three months ended September 30, 2023 and lower for the nine months ended September 30, 2023 compared to the same periods in 2022 because of revisions to forecasts for performance-based share awards under both the short-term and long-term incentive plans. The Company accounts for forfeitures as they occur. The stock-based compensation expense by type is as follows: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Service-based awards $ 353 $ 447 $ 1,044 $ 1,150 Performance-based awards (short-term incentive plan) ( 109 ) 346 0 689 Performance-based awards (long-term incentive plan) ( 595 ) 278 ( 1,001 ) 949 Employee stock purchase plan 57 76 176 219 Total $ ( 294 ) $ 1,147 $ 219 $ 3,007 Total stock-based compensation is reflected in the condensed consolidated statements of operations as follows: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Cost of revenues $ ( 1 ) $ 61 $ 93 $ 156 Research and development 17 163 110 472 Sales and marketing ( 87 ) 241 21 694 General and administrative ( 223 ) 682 ( 5 ) 1,685 Total $ ( 294 ) $ 1,147 $ 219 $ 3,007 The following table presents a summary of the remaining unrecognized share-based compensation expense related to outstanding share-based awards as of September 30, 2023: Award Type Remaining Unrecognized Compensation Expense Weighted Average Life (Years) Service-based awards $ 1,505 1.3 Performance-based awards $ 93 0.9 Service-Based Awards Restricted Stock The Company grants both service-based and performance-based stock awards to employees pursuant to the PCTEL, Inc. 2019 Stock Incentive Plan. When service-based restricted stock is granted, 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. For the annual awards granted to executives and key managers in the nine months ended September 30, 2023 and 2022, the Company awarded long-term incentives comprised of one-third service-based restricted stock and two-thirds performance-based restricted stock. The Company awarded service-based restricted stock to all other participating employees. The following table summarizes service-based restricted stock activity for the nine months ended September 30, 2023: Shares Weighted Unvested Restricted Stock Awards - December 31, 2022 354,037 $ 6.12 Shares awarded 170,960 4.38 Shares vested ( 165,475 ) 6.77 Shares cancelled ( 25,376 ) 5.09 Unvested Restricted Stock Awards - September 30, 2023 334,146 $ 4.98 The intrinsic value of service-based restricted shares that vested during the each of the nine months ended September 30, 2023 and 2022 was $ 0.8 million. Restricted Stock Units The Company grants service-based and performance-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 on the same basis as for restricted stock awards as described above. The following table summarizes the restricted stock unit activity during the nine months ended September 30, 2023: Shares Weighted Unvested Restricted Stock Units - December 31, 2022 35,253 $ 5.42 Units awarded 6,200 4.21 Units vested/Shares awarded ( 12,252 ) 5.57 Unvested Restricted Stock Units - September 30, 2023 29,201 $ 5.12 The intrinsic value of service-based restricted stock units that vested and were issued as shares during the nine months ended September 30, 2023 and 2022 was $ 55 and $ 21 , respectively. Stock Options The Company may grant employees stock options to purchase common stock. The Company issues stock options with exercise prices no less than the fair value of the Company’s stock on the grant date. Employee stock options are subject to installment vesting. 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 stock options outstanding at September 30, 2023 have a seven-year life. During the third quarter of 2023, 2,000 stock options expired. The following table summarizes information about stock options outstanding under all stock option plans at September 30, 2023: Options Outstanding and Exercisable Number of Shares Contractual Intrinsic Value Exercise 2,000 1.37 $ 0 $ 6.98 The intrinsic value is based on the share price of $ 4.16 at September 30, 2023. For outstanding employee stock options, the Company calculated the fair value of each stock option on the date of grant using the Black-Scholes option-pricing model. 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. In addition, option valuation models require the input of highly subjective assumptions including the expected stock price volatility and expected option life. The dividend yield rate is calculated by dividing the Company’s annual dividend by the closing price on the grant date. The risk-free interest rate is based on the U.S. Treasury yields with a remaining term that approximates the expected life of the options granted. The expected volatility is based on a five-year historical period of the Company’s stock price. The expected life for options granted is based on historical data of employee exercise performance. The Company records expense based on the graded vesting method. Performance-Based Equity Awards Short-Term Incentive Plan The Company granted short-term incentive awards to executives, key managers, and non-sales employees under the Company’s 2022 Short-Term Incentive Plan (“STIP”) based on upon achievement of specifically identified corporate annual 2022 adjusted EBITDA and revenue goals. In the first quarter 2023, bonuses for 2022 were paid 50 % Company common stock and 50 % in cash for executives and key managers, and 100 % in cash for all other participants. The value of the common stock for 2022 STIP awards was $ 1.2 million. The 2023 STIP awards, like the 2022 STIP awards, will be paid 50 % in cash and 50 % in the Company’s stock for executives and key managers. Long-Term Incentive Plan The Company grants 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: Awards at Target Weighted Unvested Performance Awards - December 31, 2022 521,204 $ 6.85 Awards granted 230,355 4.46 Awards vested ( 53,345 ) 8.70 Awards cancelled ( 129,361 ) 6.25 Unvested Performance Awards - September 30, 2023 568,853 $ 5.52 The Company granted performance awards under its long-term incentive plan to executives in February 2023 (“2023 LTIP”) and non-executives in May 2023. The performance period for the 2023 LTIP is from January 1, 2023 through December 31, 2025 . At target, the total fair market value of all performance based awards issued in 2023 was $ 1.0 million based on the share price of $ 4.46 on the grant date. On the award date, the aggregate number of shares that could be earned at target was 230,355 and the maximum number of aggregate shares that could be earned was 403,121 . Under the 2023 LTIP and similar plans from 2022 and 2021, 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. 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 will be fully vested shares. The Company records stock compensation expense over the performance period based on the Company’s estimate of the aggregate number of shares that will be earned under the incentive plan. During the first quarter 2023, the Company issued 53,345 shares with an intrinsic value of $ 0.2 million related to achievement under the 2020 LTIP. The following table summarizes the active performance-based long-term incentive plans at September 30, 2023: Number of Shares Share Price That Could Be Earned: LTIP award on Grant Date Target Maximum Performance Period 2021 LTIP $ 8.23 140,297 245,520 January 1, 2021 through December 31, 2023 2022 LTIP $ 4.83 214,951 376,164 January 1, 2022 through December 31, 2024 2023 LTIP $ 4.55 213,605 373,809 January 1, 2023 through December 31, 2025 568,853 995,493 Employee Stock Purchase Plan (“ESPP”) The ESPP enables eligible employees to purchase common stock at the lower of 85 % of the fair market value of the common stock on the first or last day of each offering period. Each offering period is approximately six months . Based on the 15 % discount and the fair value of the option feature of the ESPP, it is considered compensatory. Compensation expense is calculated using the fair value of the employees’ purchase rights under the Black-Scholes model. The Company calculated the fair value of each employee stock purchase grant on the date of grant using the Black-Scholes option-pricing model using the following assumptions: Employee Stock Purchase Plan 2023 2022 Dividend yield 5.2 % 4.7 % Risk-free interest rate 4.6 % 1.7 % Expected volatility 48.7 % 48 % 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 a remaining term that approximates the expected life of the purchased shares. The volatility was based on a five-year historical period of the Company’s stock price. The expected life was based on the offering period. At the close of the ESPP offering period ended March 31, 2023, 100,613 shares were purchased in accordance with the terms of the plan. At the close of the ESPP offering period ended September 30, 2023, 95,342 shares were purchased. Board of Director Equity Awards The Company grants restricted stock awards to members of its Board of Directors as an annual retainer and for committee service. These awards are shares of the Company’s stock that vest one year after issuance. In addition, new directors receive a one-time grant that vests over three years . In June 2023, the Company issued 95,966 shares to directors for their annual retainer and committee services. In addition, the Company issued 10,893 shares to its new director. The fair value of the service-based restricted shares for directors that vested during the nine months ended September 30, 2023 was $ 0.6 million. The following table summarizes the director awards activity: Shares Weighted Outstanding - December 31, 2022 120,696 $ 4.02 Shares awarded 106,859 4.59 Shares vested ( 120,696 ) 4.02 Outstanding - September 30, 2023 106,859 $ 4.59 Employee Withholding Taxes on Stock Awards For ease in administering the issuance of employee stock awards, the Company withholds shares of vested restricted stock awards, stock option exercises and short-term and long-term incentive plan stock awards for taxes. The Company withholds the number of shares it computes as having the value of the relevant withholding tax and remits the tax payment to the appropriate tax authority. For withholding taxes related to stock awards, the Company paid $ 0.7 million and $ 0.4 million during the nine months ended September 30, 2023 and 2022, respectively.

Benefit Plans

Benefit Plans	9 Months Ended
	Sep. 30, 2023
Retirement Benefits [Abstract]
Benefit Plans	8. Benefit Plans Employee Benefit Plans The Company’s 401(k) plan covers all U.S. employees beginning the first day 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 employee contributions up to 4 % of compensation and may also make discretionary contributions to the 401(k) plan. The Company also contributes to various retirement plans for foreign employees. The Company’s contributions to retirement plans during the three and nine months ended September 30, 2023 and 2022, respectively, were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 PCTEL, Inc. 401(k) profit sharing plan - US employees $ 186 $ 187 $ 629 $ 593 Defined contribution plans - Foreign employees 60 55 171 190 Total $ 246 $ 242 $ 800 $ 783

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	9. 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 related to estimated sales returns was $ 0.1 million and $ 0.2 million at September 30, 2023 and December 31, 2022, respectively, and is included within accrued liabilities on the accompanying condensed consolidated balance sheets. The Company offers repair and replacement warranties ranging from one to ten years for certain antenna products and test & measurement products. The Company’s warranty reserve is based on historical sales and costs of repair and replacement trends. The warranty reserve was $ 0.3 million at September 30, 2023 and 2022, respectively, and is included in accrued liabilities in the accompanying condensed consolidated balance sheets. The following table summarizes the warranty activity during the nine months ended September 30, 2023 and 2022: Nine Months Ended September 30, 2023 2022 Beginning balance $ 317 $ 257 Provisions for warranties 153 162 Consumption of reserves ( 174 ) ( 110 ) Ending balance $ 296 $ 309

Leases

Leases	9 Months Ended
	Sep. 30, 2023
Leases [Abstract]
Leases	10. Leases 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 determines if an arrangement is a lease at inception of a contract. Right of Use (“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 lease 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 the 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 three and nine months ended September 30, 2023 and 2022, respectively, included the following components: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Operating lease costs $ 133 $ 119 $ 401 $ 377 Short-term lease costs 10 10 28 60 Variable lease costs 7 2 14 4 Amortization of finance lease assets 12 12 39 47 Interest on finance lease liabilities 1 1 3 4 Total lease cost $ 163 $ 144 $ 485 $ 492 The table below summarizes the Company's scheduled future minimum lease payments under operating and finance leases recorded on the balance sheet as of September 30, 2023: Year Operating Leases Finance Leases 2023 (remaining three months) $ 134 $ 15 2024 672 70 2025 582 52 2026 522 31 2027 505 26 Thereafter 1,675 20 Total minimum payments required 4,090 214 Less: amount representing interest 643 25 Present value of net minimum lease payments 3,447 189 Less: current maturities of lease obligations ( 516 ) ( 60 ) Long-term lease obligations $ 2,931 $ 129 The weighted average remaining lease terms and discount rates for all the Company’s operating and finance leases were as follows as of September 30, 2023: September 30, 2023 Weighted-average remaining lease term - finance leases 3.7 years Weighted-average remaining lease term - operating leases 6.9 years Weighted-average discount rate - finance leases 5.8 % Weighted-average discount rate - operating leases 5.0 % The table below presents supplemental cash flow information related to leases during the three and nine months ended September 30, 2023 and 2022, respectively: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows for operating leases $ 150 $ 167 $ 584 $ 553 Operating cash flows for finance leases $ 1 $ 1 $ 3 $ 4 Financing cash flows for finance leases $ 24 $ 11 $ 52 $ 48 The following table summarizes the classification of ROU assets and lease liabilities as of September 30, 2023 and December 31, 2022: Leases Consolidated Balance Sheet Classification September 30, 2023 December 31, 2022 Assets: Operating right-of-use assets Other noncurrent assets $ 1,963 $ 2,241 Finance right-of-use assets Other noncurrent assets 198 120 Total leased assets $ 2,161 $ 2,361 Liabilities: Current Operating lease liabilities Accrued liabilities $ 516 $ 527 Finance lease liabilities Accrued liabilities 60 51 Noncurrent Operating lease liabilities Long-term liabilities 2,931 3,327 Finance lease liabilities Long-term liabilities 129 73 Total lease liabilities $ 3,636 $ 3,978

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2023
Income Tax Disclosure [Abstract]
Income Taxes	11. Income Taxes The Company recorded an income tax expense of $ 0.5 million for the nine months ended September 30, 2023, and an income tax benefit of $ 0.4 million for the nine months ended September 30, 2022. The income tax expense recorded for the nine months ended September 30, 2023 and 2022 was lower than the statutory rate of 21 % primarily because the Company has a full valuation allowance on its U.S. deferred tax assets. The Company had deferred tax assets net of deferred tax liabilities of $ 14.7 million and $ 15.3 million at September 30, 2023 and December 31, 2022, respectively. By jurisdiction, $ 12.0 million was associated with the U.S., $ 1.3 million was associated with China, and $ 1.4 million was associated with Sweden. The Company’s gross deferred tax assets consist of federal and state net operating losses (“NOLs”), credits, and timing differences. The Company's valuation allowances are due to uncertainty regarding the utilization of the deferred tax assets. 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. At September 30, 2023, the Company had a full valuation allowance on its U.S. and China deferred tax asset and a partial valuation allowance related to its net deferred tax assets for Sweden. The Company’s federal NOLs generated in 2018 and later periods will not expire, but the Company’s NOLs generated through December 31, 2017 have a finite life primarily based on the 20 -year carry forward of federal net operating losses. The timing differences have a ratable reversal pattern over 12 years. While the Company recorded pre-tax book income for the prior three years and believes its financial outlook remains positive, it is below its revenue and earnings projections for 2023 and it did not meet its revenue or earnings expectations for the U.S. jurisdiction in the prior years. Additionally, the Company recognized revenue for one-time projects in fiscal year 2022 that will not be repeated in 2023 or future years. Because of difficulties with forecasting financial results historically, and due to the uncertainties associated with macroeconomic conditions, the Company maintained a full valuation allowance on its U.S. deferred tax assets at September 30, 2023 and December 31, 2022. The Company’s performance versus its projections in both of the prior two years 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. In addition, the Company faces uncertainties from recent macroeconomic conditions, including inflationary pressures, the economic weakness and the potential for a recession. As a result of all these factors, the Company maintained a full valuation allowance on its U.S. deferred tax assets at September 30, 2023. Until an appropriate level of profitability is attained with corresponding utilization of its net deferred tax assets, the Company expects to maintain a full valuation allowance on its net deferred tax assets for the U.S. jurisdiction. Any U.S. or foreign tax benefits or tax expense recorded on its consolidated statements 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. Since the Company completed the transition of manufacturing from its Tianjin facility to contract manufacturers in 2022, the Company does not expect sufficient profits to utilize its China deferred tax assets. The Company had a full valuation allowance on its China deferred tax at September 30, 2023 and at December 31, 2022. The Company maintained a partial valuation allowance on its Sweden deferred tax assets at September 30, 2023 and at December 31, 2022. Based on positive book and taxable income in 2021 and 2022 and because results exceeded projections, the Company reversed a portion of its valuation allowance related to Sweden deferred tax assets during 2022. 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. The Company files a consolidated federal income tax return, income tax returns with various states, and foreign income tax returns in various foreign jurisdictions. The Company’s U.S. federal tax returns remain subject to examination for 2019 and subsequent periods. The Company’s U.S. state tax returns remain subject to examination for 2017 and subsequent periods. The Company’s foreign tax returns remain subject to examination for 2011 and subsequent periods. The Company’s gross unrecognized tax benefit related to income tax uncertainties was $ 1.0 million at September 30, 2023 and December 31, 2022.

Product Line and Geographic Inf

Product Line and Geographic Information	9 Months Ended
	Sep. 30, 2023
Segment Reporting [Abstract]
Product Line and Geographic Information	12. Product Line and Geographic Information Product Line Information: The following tables are the product line revenues and gross profits for the three and nine months ended September 30, 2023 and 2022: Three Months Ended September 30, 2023 Antennas & Industrial IoT Devices Test & Measurement Products Corporate Total Revenues $ 13,172 $ 4,234 $ ( 21 ) $ 17,385 Gross Profit $ 4,776 $ 2,785 $ 51 $ 7,612 Gross Profit % 36.3 % 65.8 % NA 43.8 % Nine Months Ended September 30, 2023 Antennas & Industrial IoT Devices Test & Measurement Products Corporate Total Revenues $ 43,145 $ 17,891 $ ( 100 ) $ 60,936 Gross Profit $ 16,445 $ 12,671 $ 123 $ 29,239 Gross Profit % 38.1 % 70.8 % NA 48.0 % Three Months Ended September 30, 2022 Antennas & Industrial IoT Devices Test & Measurement Products Corporate Total Revenues $ 18,653 $ 7,683 $ ( 348 ) $ 25,988 Gross Profit $ 6,562 $ 5,544 $ ( 170 ) $ 11,936 Gross Profit % 35.2 % 72.2 % N/A 45.9 % Nine Months Ended September 30, 2022 Antennas & Industrial IoT Devices Test & Measurement Products Corporate Total Revenues $ 53,310 $ 20,698 $ ( 502 ) $ 73,506 Gross Profit $ 17,435 $ 15,466 $ ( 205 ) $ 32,696 Gross Profit % 32.7 % 74.7 % NA 44.5 % Geographic Information: The Company’s revenue from customers by geographic location, as a percent of total revenues for the three and nine months ended September 30, 2023 and 2022, is as follows: Three Months Ended September 30, Nine Months Ended September 30, Region 2023 2022 2023 2022 Europe, Middle East & Africa 25 % 20 % 23 % 22 % Asia Pacific 5 % 7 % 8 % 6 % Other Americas 4 % 3 % 4 % 2 % Total Foreign sales 34 % 30 % 35 % 30 % Customer Concentration: The following table represents the customers that accounted for 10% or more of revenues during the three and nine months ended September 30, 2023 and 2022: Three Months Ended September 30, Nine Months Ended September 30, Revenues 2023 2022 2023 2022 Customer A 15 % 18 % 13 % 15 % Customer B 2 % 11 % 2 % 9 % The following table represents the customers that accounted for 10% or more of total trade accounts receivable: Trade Accounts Receivable September 30, 2023 December 31, 2022 Customer A 15 % 12 % Customer B 3 % 12 % Customer C 4 % 11 %

Revenue from Contracts with Cus

Revenue from Contracts with Customers	9 Months Ended
	Sep. 30, 2023
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	13. Revenue from Contracts with Customers Under Topic 606, a contract with a customer is an agreement that both parties have approved, that creates enforceable rights and obligations, has commercial substance, and specified 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 usage at 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. The Company allows its major distributors and certain other customers to return unused product 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 September 30, 2023 and December 31, 2022, respectively, and is included within accrued liabilities in the accompanying condensed consolidated balance sheets. The Company records an asset based on historical experience for the amount of product it expects to return to inventory as a result of customer returns, which is recorded in inventories in the accompanying condensed consolidated balance sheets. The product return asset was $ 0.1 million at September 30, 2023 and December 31, 2022. There were no contract assets at September 30, 2023 and December 31, 2022. The Company records contract liabilities for deferred revenue and customer prepayments. Contract liabilities are recorded in accrued liabilities in the accompanying condensed consolidated balance sheets. The contract liability was $ 0.8 million and $ 0.9 million at September 30, 2023 and December 31, 2022, respectively. The Company recognized revenue of $ 1.2 million during the nine months ended September 30, 2023 and 2022, related to contract liabilities that existed at the beginning of the period.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2023
Subsequent Events [Abstract]
Subsequent Events	14. 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. Other than the event disclosed below, there were no other subsequent events or transactions that required recognition or disclosure in the unaudited interim condensed consolidated financial statements. Merger Agreement On October 13, 2023, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Amphenol Corporation (“Parent”) and Hilltop Merger Sub, Inc., a Delaware corporation and wholly owned subsidiary of Parent (“Merger Sub”), pursuant to which, on the terms and conditions set forth therein and in accordance with the Delaware General Corporation Law (the “DGCL”), Merger Sub will merge with and into the Company with the Company surviving the merger as a wholly owned subsidiary of Parent (the “Merger”). On the terms and subject to the conditions set forth in the Merger Agreement, which has been approved by the Board, at the effective time of the Merger (the “Effective Time”), each share of the Company’s common stock issued and outstanding immediately prior to the Effective Time (other than shares of Company common stock (i) owned by the Company in treasury or owned of record by any subsidiary of the Company (other than those held on behalf of a third party), (ii) owned by Parent or Merger Sub or their respective subsidiaries or ( i ii) held by any person who properly exercises appraisal rights under the DGCL) shall be converted into the right to receive an amount in cash equal to $ 7.00 per share, without interest (the “Merger Consideration”). The consummation of the Merger is subject to certain closing conditions, including, among other things: (i) the approval of the Company’s stockholders, (ii) the receipt of certain other regulatory approvals or consents, and (iii) other customary conditions specified in the Merger Agreement. If the Merger is consummated, the Company’s common stock will no longer be listed on any public market. The Merger Agreement also provides for certain termination rights for both the Company and Parent, including the right of the Company to terminate the Merger Agreement prior to receipt of the Company’s stockholder approval to accept a superior proposal and pursuant to which the Board has authorized the Company to enter into a binding and definitive written alternative acquisition agreement, subject to certain conditions and obligations including the payment of a termination fee, as described below. In addition, and subject to certain limitations, the Merger Agreement can be terminated by either Parent or the Company if (i) the Merger is not consummated on or before March 13, 2024 or such other date as is agreed in writing by Parent and the Company (any such date, the “Outside Date”) (provided, however, that if all of the conditions to closing other than the conditions relating to governmental consents and the absence of any order of law enjoining or prohibiting the consummation of the Merger have been satisfied as of March 13, 2024, the Outside Date shall automatically extend to June 11, 2024), (ii) the Company stockholder approval is not obtained following a vote of the stockholders of the Company taken thereon or (iii) any applicable governmental entity issues a final and non-appealable order permanently restraining or otherwise prohibiting the Merger Upon termination of the Merger Agreement under certain circumstances, the Company would be obligated to pay Parent a termination fee of $ 4,900,000 . The foregoing description of the Merger Agreement, the Merger and other transactions contemplated thereby does not purport to be complete and is subject to, and qualified in its entirety by reference to, the full text of the Merger Agreement, which is filed as Exhibit 2.1 hereto and is incorporated herein by reference.

Basis of Presentation (Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations	Nature of Operations PCTEL, Inc. (“PCTEL” or “the Company”) was incorporated in California in 1994 and reincorporated in Delaware in 1998. The Company is a leading global provider of wireless technology, including purpose-built Industrial IoT devices, antenna systems, and test & measurement solutions. PCTEL strives to solve complex wireless challenges to help organizations stay connected, transform, and grow and it has expertise in radio frequency ("RF,"), digital, and mechanical engineering. The Company has two product lines (antennas & Industrial IoT devices and test & measurement products). The Company’s principal executive offices are located at 471 Brighton Drive, Bloomingdale, Illinois 60108. The telephone number at that address is (630) 372-6800 and the website is www.pctel.com. Additional information about the Company can be obtained on the Company’s website; however, the information within, or that can be accessed through, the Company’s website is not part of this Quarterly Report on Form 10-Q.
Basis of Consolidation	Basis of Consolidation The unaudited interim condensed consolidated financial statements of the Company include the condensed consolidated balance sheets as of September 30, 2023 and December 31, 2022, and the condensed consolidated statement of cash flows, the condensed consolidated statements of operations, the condensed consolidated statements of comprehensive (loss) income, and the condensed consolidated statements of stockholders’ equity for the three and nine months ended September 30, 2023 and 2022, respectively. The interim condensed consolidated financial statements are unaudited and reflect all adjustments of a normal recurring nature that are, in the opinion of management, necessary for a fair presentation of the interim period financial statements. The condensed consolidated balance sheet as of December 31, 2022 is derived from the audited financial statements as of December 31, 2022. The unaudited interim condensed consolidated financial statements of the Company have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Accordingly, certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted. The significant accounting policies followed by the Company are set forth in the 2022 Form 10-K. There were no material changes in the Company’s significant accounting policies during the three and nine months ended September 30, 2023. In addition, the Company reaffirms the use of estimates in the preparation of the financial statements as set forth in the 2022 Form 10-K. These unaudited interim condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and notes thereto included in the 2022 Form 10-K. The results of operations for interim periods are not necessarily indicative of the results that may be expected for the full period or any other interim periods.
Foreign Operations	Foreign Operations Cross-border transactions, both with external parties and in our internal operations, result in exposure to foreign exchange rate fluctuations. We are exposed to currency risk by having foreign locations with suppliers and employees located outside the U.S. Fluctuations could have an adverse effect on our results of operations, cash flows and our balance sheet. We manage certain operating activities at the local level with revenues, costs, assets, and liabilities generally being denominated in local currencies. However, our results of operations and assets and liabilities are reported in U.S. dollars and thus will fluctuate with changes in exchange rates between such local currencies and the U.S. dollar. Gains and losses resulting from transactions originally in foreign currencies and then translated into U.S. dollars are included in the condensed consolidated statements of operations. For the nine months ended September 30, 2023, approximately 13 % of revenues and 11 % of expenses were transacted in foreign currencies as compared to 11 % and 13 % for the nine months ended September 30, 2022. Net foreign exchange gains (losses) resulting from foreign currency transactions included in other income, net were ($ 56 ) and $ 114 for the three months ended September 30, 2023 and 2022, respectively. Net foreign exchange gains resulting from foreign currency transactions included in other income, net were $ 18 and $ 187 for the nine months ended September 30, 2023 and 2022, respectively.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In June 2022, the FASB issued ASU 2022-03, Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions. This update clarifies the guidance in Topic 820 on the fair value measurement of an equity security that is subject to contractual restrictions that prohibit the sale of the equity security. This update also requires specific disclosures related to such an equity security including (1) the fair value of such equity securities reflected in the balance sheet, (2) the nature and remaining duration of the corresponding restrictions, and (3) any circumstances that could cause a lapse in the restrictions. This ASU is effective for all public business entities in fiscal years beginning after December 15, 2023, and interim periods within those fiscal years, with early adoption permitted. The Company is currently evaluating the impact of this ASU on our consolidated financial statements and related disclosures.

(Loss) Income per Share (Tables

(Loss) Income per Share (Tables)	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Computation of Basic and Diluted Income Per Share	The following table is the computation of basic and diluted income per share: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Basic Income Per Share computation: Numerator: Net (loss) income $ ( 110 ) $ 1,972 $ 2,213 $ 819 Denominator: Weighted shares outstanding - basic 18,817,294 18,165,611 18,642,704 18,098,694 Net (loss) income per common share - basic $ ( 0.01 ) $ 0.11 $ 0.12 $ 0.05 Diluted Income Per Share computation: Denominator: Weighted shares outstanding - basic 18,817,294 18,165,611 18,642,704 18,098,694 Restricted shares subject to vesting 0 21,394 102,545 115,013 Common stock option grants 0 70 0 46 Weighted shares outstanding - diluted 18,817,294 18,187,075 18,745,249 18,213,753 Net (loss) income per common share - diluted $ ( 0.01 ) $ 0.11 $ 0.12 $ 0.04

Cash, Cash Equivalents and In_2

Cash, Cash Equivalents and Investments (Tables)	9 Months Ended
	Sep. 30, 2023
Cash and Cash Equivalents [Abstract]
Cash and Cash Equivalents and Investments	The Company’s cash, cash equivalents, and investments consisted of the following: September 30, December 31, 2023 2022 Cash $ 2,880 $ 5,780 Cash equivalents 666 1,956 Short-term investments 29,770 22,254 Total $ 33,316 $ 29,990
Summary of Cash in Foreign Accounts	The cash in foreign accounts was as follows: September 30, December 31, 2023 2022 China $ 325 $ 2,672 Sweden 1,532 1,868 Total $ 1,857 $ 4,540
Cash Equivalents and Investments	Cash equivalents and investments were as follows at September 30, 2023 and December 31, 2022: September 30, 2023 December 31, 2022 Level 1 Level 2 Total Level 1 Level 2 Total Cash equivalents: Money market funds $ 666 $ 0 $ 666 $ 1,956 $ 0 $ 1,956 Total Cash Equivalents $ 666 $ 0 $ 666 $ 1,956 $ 0 $ 1,956 Short-Term Investments: Corporate bonds $ 0 $ 22,980 $ 22,980 $ 0 $ 21,145 $ 21,145 Certificates of deposit 6,790 0 6,790 1,109 0 1,109 Total Short-Term Investments $ 6,790 $ 22,980 $ 29,770 $ 1,109 $ 21,145 $ 22,254 Cash equivalents and Investments - book value $ 7,456 $ 22,980 $ 30,436 $ 3,065 $ 21,145 $ 24,210 Unrealized losses $ 0 $ ( 173 ) $ ( 173 ) $ 0 $ ( 59 ) $ ( 59 ) Cash equivalents and Investments - fair value $ 7,456 $ 22,807 $ 30,263 $ 3,065 $ 21,086 $ 24,151
Schedule of Foreign Investments	The investments in foreign accounts were as follows: September 30, December 31, 2023 2022 China $ 2,331 $ 0 Sweden 1,661 0 Total $ 3,992 $ 0

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Carrying Amount of Goodwill	The change in the carrying amount of goodwill during the nine months ended September 30, 2023 is as follows: Amount Balance at December 31, 2022 $ 5,935 Foreign currency translation ( 98 ) Balance at September 30, 2023 $ 5,837
Summary of Amortization Expense	The summary of amortization expense in the condensed consolidated statement of operations is as follows: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Cost of revenues $ 17 $ 17 $ 52 $ 56 Operating expenses 61 63 188 201 Total $ 78 $ 80 $ 240 $ 257
Summary of Other Intangible Assets	The summary of other intangible assets, net is as follows: September 30, 2023 December 31, 2022 Accumulated Net Book Accumulated Net Book Cost Amortization Value Cost Amortization Value Customer contracts and relationships $ 17,488 $ 17,174 $ 314 $ 17,512 $ 17,091 $ 421 Patents and technology 9,982 9,807 175 9,995 9,761 234 Trademarks and trade names 1,465 1,210 255 1,484 1,143 341 Other intangible assets 92 64 28 96 47 49 Total $ 29,027 $ 28,255 $ 772 $ 29,087 $ 28,042 $ 1,045
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 Customer contracts and relationships 5 years 5.0 Patents and technology 5 years 5.0 Trademarks and trade names 5 years 5.0 Other intangible assets .5 to 5 years 3.6
Schedule of Future Amortization Expenses	The future amortization expenses are as follows: Fiscal Year Amount 2023 (remaining three months) $ 78 2024 301 2025 295 2026 98 Thereafter 0 Total $ 772

Balance Sheet Information (Tabl

Balance Sheet Information (Tables)	9 Months Ended
	Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary of Allowances for Accounts Receivable	The allowances for accounts receivable consisted of the following: September 30, 2023 December 31, 2022 Credit loss provision $ 110 $ 92 Credit allowances 24 40 Total allowances $ 134 $ 132
Summary of Allowance for credit losses	The following table summarizes the allowance for credit losses activity during the nine months ended September 30, 2023: Balance at December 31, 2022 $ 92 Current period allowance for credit losses 18 Balance at September 30, 2023 $ 110
Summary of Inventories, Net	Inventories, net consisted of the following: September 30, 2023 December 31, 2022 Raw materials $ 8,083 $ 9,064 Work-in-process 1,288 1,076 Finished goods 7,126 8,778 Inventories, net $ 16,497 $ 18,918
Summary of Property and Equipment	Property and equipment consisted of the following: September 30, 2023 December 31, 2022 Building $ 6,922 $ 6,922 Computers and office equipment 10,772 10,217 Manufacturing and test equipment 14,192 14,661 Furniture and fixtures 1,491 1,475 Leasehold improvements 1,965 1,965 Motor vehicles 20 20 Total property and equipment 35,362 35,260 Less: Accumulated depreciation and amortization ( 27,580 ) ( 27,026 ) Land 1,770 1,770 Property and equipment, net $ 9,552 $ 10,004
Summary of Accrued Liabilities	Accrued liabilities consisted of the following: September 30, 2023 December 31, 2022 Inventory receipts $ 2,024 $ 3,720 Paid time off 1,229 1,001 Payroll and other employee benefits 957 4,318 Professional fees and contractors 607 346 Deferred revenues 522 495 Operating leases 516 527 Employee stock purchase plan 434 232 Warranties 296 317 Income and sales taxes 227 836 Customer refunds for estimated returns 131 235 Real estate taxes 125 158 Finance leases 60 51 Other 234 369 Total $ 7,362 $ 12,605
Summary of Long-term Liabilities	Long-term liabilities consisted of the following: September 30, 2023 December 31, 2022 Operating leases $ 2,931 $ 3,327 Deferred revenue 173 181 Finance leases 129 73 Other 33 43 Total $ 3,266 $ 3,624

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]
Summary of Stock-Based Compensation Expense by Type	The stock-based compensation expense by type is as follows: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Service-based awards $ 353 $ 447 $ 1,044 $ 1,150 Performance-based awards (short-term incentive plan) ( 109 ) 346 0 689 Performance-based awards (long-term incentive plan) ( 595 ) 278 ( 1,001 ) 949 Employee stock purchase plan 57 76 176 219 Total $ ( 294 ) $ 1,147 $ 219 $ 3,007
Stock-Based Compensation	Total stock-based compensation is reflected in the condensed consolidated statements of operations as follows: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Cost of revenues $ ( 1 ) $ 61 $ 93 $ 156 Research and development 17 163 110 472 Sales and marketing ( 87 ) 241 21 694 General and administrative ( 223 ) 682 ( 5 ) 1,685 Total $ ( 294 ) $ 1,147 $ 219 $ 3,007 The following table presents a summary of the remaining unrecognized share-based compensation expense related to outstanding share-based awards as of September 30, 2023: Award Type Remaining Unrecognized Compensation Expense Weighted Average Life (Years) Service-based awards $ 1,505 1.3 Performance-based awards $ 93 0.9
Summary of Service-based Restricted Stock Activity	The following table summarizes service-based restricted stock activity for the nine months ended September 30, 2023: Shares Weighted Unvested Restricted Stock Awards - December 31, 2022 354,037 $ 6.12 Shares awarded 170,960 4.38 Shares vested ( 165,475 ) 6.77 Shares cancelled ( 25,376 ) 5.09 Unvested Restricted Stock Awards - September 30, 2023 334,146 $ 4.98 The following table summarizes the restricted stock unit activity during the nine months ended September 30, 2023: Shares Weighted Unvested Restricted Stock Units - December 31, 2022 35,253 $ 5.42 Units awarded 6,200 4.21 Units vested/Shares awarded ( 12,252 ) 5.57 Unvested Restricted Stock Units - September 30, 2023 29,201 $ 5.12
Information about Stock Options Outstanding Under all Stock Plans	The following table summarizes information about stock options outstanding under all stock option plans at September 30, 2023: Options Outstanding and Exercisable Number of Shares Contractual Intrinsic Value Exercise 2,000 1.37 $ 0 $ 6.98
Summary of Performance Share Activity	The following table summarizes the performance award activity: Awards at Target Weighted Unvested Performance Awards - December 31, 2022 521,204 $ 6.85 Awards granted 230,355 4.46 Awards vested ( 53,345 ) 8.70 Awards cancelled ( 129,361 ) 6.25 Unvested Performance Awards - September 30, 2023 568,853 $ 5.52
Summary Of Active Performance-Based Long-Term Incentive Plans	The following table summarizes the active performance-based long-term incentive plans at September 30, 2023: Number of Shares Share Price That Could Be Earned: LTIP award on Grant Date Target Maximum Performance Period 2021 LTIP $ 8.23 140,297 245,520 January 1, 2021 through December 31, 2023 2022 LTIP $ 4.83 214,951 376,164 January 1, 2022 through December 31, 2024 2023 LTIP $ 4.55 213,605 373,809 January 1, 2023 through December 31, 2025 568,853 995,493
Calculation of Fair Value of Each Employee Stock Purchase Grant Using Black-Scholes Option-Pricing Model	The Company calculated the fair value of each employee stock purchase grant on the date of grant using the Black-Scholes option-pricing model using the following assumptions: Employee Stock Purchase Plan 2023 2022 Dividend yield 5.2 % 4.7 % Risk-free interest rate 4.6 % 1.7 % Expected volatility 48.7 % 48 % Expected life (in years) 0.5 0.5
Summary of Director Awards Activity	The following table summarizes the director awards activity: Shares Weighted Outstanding - December 31, 2022 120,696 $ 4.02 Shares awarded 106,859 4.59 Shares vested ( 120,696 ) 4.02 Outstanding - September 30, 2023 106,859 $ 4.59

Benefit Plans (Tables)

Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2023
Retirement Benefits [Abstract]
Summary of Contributions to Retirement Plans	The Company’s contributions to retirement plans during the three and nine months ended September 30, 2023 and 2022, respectively, were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 PCTEL, Inc. 401(k) profit sharing plan - US employees $ 186 $ 187 $ 629 $ 593 Defined contribution plans - Foreign employees 60 55 171 190 Total $ 246 $ 242 $ 800 $ 783

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Summary of Warranty Activity	The following table summarizes the warranty activity during the nine months ended September 30, 2023 and 2022: Nine Months Ended September 30, 2023 2022 Beginning balance $ 317 $ 257 Provisions for warranties 153 162 Consumption of reserves ( 174 ) ( 110 ) Ending balance $ 296 $ 309

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2023
Leases [Abstract]
Components of Lease Cost	The Company's lease cost for the three and nine months ended September 30, 2023 and 2022, respectively, included the following components: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Operating lease costs $ 133 $ 119 $ 401 $ 377 Short-term lease costs 10 10 28 60 Variable lease costs 7 2 14 4 Amortization of finance lease assets 12 12 39 47 Interest on finance lease liabilities 1 1 3 4 Total lease cost $ 163 $ 144 $ 485 $ 492
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 September 30, 2023: Year Operating Leases Finance Leases 2023 (remaining three months) $ 134 $ 15 2024 672 70 2025 582 52 2026 522 31 2027 505 26 Thereafter 1,675 20 Total minimum payments required 4,090 214 Less: amount representing interest 643 25 Present value of net minimum lease payments 3,447 189 Less: current maturities of lease obligations ( 516 ) ( 60 ) Long-term lease obligations $ 2,931 $ 129
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 September 30, 2023: September 30, 2023 Weighted-average remaining lease term - finance leases 3.7 years Weighted-average remaining lease term - operating leases 6.9 years Weighted-average discount rate - finance leases 5.8 % Weighted-average discount rate - operating leases 5.0 %
Schedule of Supplemental Cash Flow Information Related to Leases	The table below presents supplemental cash flow information related to leases during the three and nine months ended September 30, 2023 and 2022, respectively: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows for operating leases $ 150 $ 167 $ 584 $ 553 Operating cash flows for finance leases $ 1 $ 1 $ 3 $ 4 Financing cash flows for finance leases $ 24 $ 11 $ 52 $ 48
Schedule of Classification of ROU Assets and Lease liabilities	The following table summarizes the classification of ROU assets and lease liabilities as of September 30, 2023 and December 31, 2022: Leases Consolidated Balance Sheet Classification September 30, 2023 December 31, 2022 Assets: Operating right-of-use assets Other noncurrent assets $ 1,963 $ 2,241 Finance right-of-use assets Other noncurrent assets 198 120 Total leased assets $ 2,161 $ 2,361 Liabilities: Current Operating lease liabilities Accrued liabilities $ 516 $ 527 Finance lease liabilities Accrued liabilities 60 51 Noncurrent Operating lease liabilities Long-term liabilities 2,931 3,327 Finance lease liabilities Long-term liabilities 129 73 Total lease liabilities $ 3,636 $ 3,978

Product Line and Geographic I_2

Product Line and Geographic Information (Tables)	9 Months Ended
	Sep. 30, 2023
Result of Product Line Revenues and Gross Profits	Product Line Information: The following tables are the product line revenues and gross profits for the three and nine months ended September 30, 2023 and 2022: Three Months Ended September 30, 2023 Antennas & Industrial IoT Devices Test & Measurement Products Corporate Total Revenues $ 13,172 $ 4,234 $ ( 21 ) $ 17,385 Gross Profit $ 4,776 $ 2,785 $ 51 $ 7,612 Gross Profit % 36.3 % 65.8 % NA 43.8 % Nine Months Ended September 30, 2023 Antennas & Industrial IoT Devices Test & Measurement Products Corporate Total Revenues $ 43,145 $ 17,891 $ ( 100 ) $ 60,936 Gross Profit $ 16,445 $ 12,671 $ 123 $ 29,239 Gross Profit % 38.1 % 70.8 % NA 48.0 % Three Months Ended September 30, 2022 Antennas & Industrial IoT Devices Test & Measurement Products Corporate Total Revenues $ 18,653 $ 7,683 $ ( 348 ) $ 25,988 Gross Profit $ 6,562 $ 5,544 $ ( 170 ) $ 11,936 Gross Profit % 35.2 % 72.2 % N/A 45.9 % Nine Months Ended September 30, 2022 Antennas & Industrial IoT Devices Test & Measurement Products Corporate Total Revenues $ 53,310 $ 20,698 $ ( 502 ) $ 73,506 Gross Profit $ 17,435 $ 15,466 $ ( 205 ) $ 32,696 Gross Profit % 32.7 % 74.7 % NA 44.5 %
Customers Accounted Revenues by Geographic Location	Geographic Information: The Company’s revenue from customers by geographic location, as a percent of total revenues for the three and nine months ended September 30, 2023 and 2022, is as follows: Three Months Ended September 30, Nine Months Ended September 30, Region 2023 2022 2023 2022 Europe, Middle East & Africa 25 % 20 % 23 % 22 % Asia Pacific 5 % 7 % 8 % 6 % Other Americas 4 % 3 % 4 % 2 % Total Foreign sales 34 % 30 % 35 % 30 %
Revenue [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 revenues during the three and nine months ended September 30, 2023 and 2022: Three Months Ended September 30, Nine Months Ended September 30, Revenues 2023 2022 2023 2022 Customer A 15 % 18 % 13 % 15 % Customer B 2 % 11 % 2 % 9 %
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: Trade Accounts Receivable September 30, 2023 December 31, 2022 Customer A 15 % 12 % Customer B 3 % 12 % Customer C 4 % 11 %

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Percentage of revenue transacted in foreign currency			13%	11%
Percentage of expenses transacted in foreign currency			11%	13%
Net foreign exchange gains (losses) resulting from foreign currency transactions included in other income	$ (56)	$ 114	$ 18	$ 187

(Loss) Income per Share - Compu

(Loss) Income per Share - Computation of Basic and Diluted Income Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Numerator:
Net (loss) income	$ (110)	$ 1,972	$ 2,213	$ 819
Denominator:
Weighted shares outstanding - basic	18,817,294	18,165,611	18,642,704	18,098,694
Net (loss) Income per common share - basic	$ (0.01)	$ 0.11	$ 0.12	$ 0.05
Weighted Average Shares:
Weighted shares outstanding - basic	18,817,294	18,165,611	18,642,704	18,098,694
Common stock option grants	0	70	0	46
Weighted shares outstanding - diluted	18,817,294	18,187,075	18,745,249	18,213,753
Net (loss) income per common share - diluted	$ (0.01)	$ 0.11	$ 0.12	$ 0.04
Restricted Stock [Member]
Weighted Average Shares:
Restricted shares subject to vesting	0	21,394	102,545	115,013

Cash, Cash Equivalents and In_3

Cash, Cash Equivalents and Investments - Cash and Cash Equivalents and Investments (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Cash and Cash Equivalents [Abstract]
Cash	$ 2,880	$ 5,780
Cash equivalents	666	1,956
Short-term investments	29,770	22,254
Cash and investments	$ 33,316	$ 29,990

Cash, Cash Equivalents and In_4

Cash, Cash Equivalents and Investments - Additional Information (Detail) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
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%
Short-term investments, maturities, minimum	90 days
Short-term investments, maturities, maximum	1 year
Net unrealized losses	$ 173,000	$ 59,000
Maximum [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Federal Deposit Insurance Corporation insured limit	$ 250,000

Cash, Cash Equivalents and In_5

Cash, Cash Equivalents and Investments - Summary of Cash in Foreign Accounts (Detail) - Cash [Member] - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Cash And Cash Equivalents [Line Items]
Cash in foreign accounts	$ 1,857	$ 4,540
China [Member]
Cash And Cash Equivalents [Line Items]
Cash in foreign accounts	325	2,672
Sweden [Member]
Cash And Cash Equivalents [Line Items]
Cash in foreign accounts	$ 1,532	$ 1,868

Cash, Cash Equivalents and In_6

Cash, Cash Equivalents and Investments - Cash Equivalents and Investments (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	$ 666	$ 1,956
Short-term investments	29,770	22,254
Cash equivalents and Investments - book value	30,436	24,210
Unrealized losses	(173)	(59)
Cash equivalents and Investments - fair value	30,263	24,151
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	666	1,956
Short-term investments	6,790	1,109
Cash equivalents and Investments - book value	7,456	3,065
Unrealized losses	0	0
Cash equivalents and Investments - fair value	7,456	3,065
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Short-term investments	22,980	21,145
Cash equivalents and Investments - book value	22,980	21,145
Unrealized losses	(173)	(59)
Cash equivalents and Investments - fair value	22,807	21,086
Corporate Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	22,980	21,145
Corporate Bonds [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	0	0
Corporate Bonds [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	22,980	21,145
Certificates of Deposit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	6,790	1,109
Certificates of Deposit [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	6,790	1,109
Certificates of Deposit [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	0	0
Money Market Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	666	1,956
Money Market Funds [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	666	1,956
Money Market Funds [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	$ 0	$ 0

Cash, Cash Equivalents and In_7

Cash, Cash Equivalents and Investments - Schedule of Foreign Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Cash and Cash Equivalents [Line Items]
Short-term investments	$ 29,770	$ 22,254
Foreign [Member]
Cash and Cash Equivalents [Line Items]
Short-term investments	3,992	0
China [Member] | Foreign [Member]
Cash and Cash Equivalents [Line Items]
Short-term investments	2,331	0
Sweden [Member] | Foreign [Member]
Cash and Cash Equivalents [Line Items]
Short-term investments	$ 1,661	$ 0

Goodwill and Intangible Assets

Goodwill and Intangible Assets - Summary of Carrying Amount of Goodwill (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Beginning Balance	$ 5,935
Foreign currency translation	(98)
Ending Balance	$ 5,837

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 61	$ 63	$ 188	$ 201
Foreign currency translation adjustment			(100)	200
Operating Expense [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets			$ 200	$ 300
Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets basis over estimated useful lives	1 year		1 year
Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets basis over estimated useful lives	5 years		5 years

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Summary of Amortization Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Finite Lived Intangible Assets [Line Items]
Amortization expense, total	$ 78	$ 80	$ 240	$ 257
Cost of Revenues [Member]
Finite Lived Intangible Assets [Line Items]
Amortization expense, total	17	17	52	56
Operating Expense [Member]
Finite Lived Intangible Assets [Line Items]
Amortization expense, total	$ 61	$ 63	$ 188	$ 201

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Summary of Other Intangible Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Finite Lived Intangible Assets [Line Items]
Cost	$ 29,027	$ 29,087
Accumulated Amortization	28,255	28,042
Net Book Value	772	1,045
Customer Contracts and Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Cost	17,488	17,512
Accumulated Amortization	17,174	17,091
Net Book Value	314	421
Patents and Technology [Member]
Finite Lived Intangible Assets [Line Items]
Cost	9,982	9,995
Accumulated Amortization	9,807	9,761
Net Book Value	175	234
Trademarks and Trade Names [Member]
Finite Lived Intangible Assets [Line Items]
Cost	1,465	1,484
Accumulated Amortization	1,210	1,143
Net Book Value	255	341
Other Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Cost	92	96
Accumulated Amortization	64	47
Net Book Value	$ 28	$ 49

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets - Summary of Assigned Lives and Weighted Average Amortization Periods by Intangible Asset Category (Detail)	9 Months Ended
	Sep. 30, 2023
Minimum [Member]
Summary Of Assigned Lives And Weighted Average Amortization Periods By Intangible Asset Category [Abstract]
Assigned Life	1 year
Maximum [Member]
Summary Of Assigned Lives And Weighted Average Amortization Periods By Intangible Asset Category [Abstract]
Assigned Life	5 years
Customer Contracts and Relationships [Member]
Summary Of Assigned Lives And Weighted Average Amortization Periods By Intangible Asset Category [Abstract]
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 [Abstract]
Assigned Life	5 years
Weighted Average Amortization Period	5 years
Trademarks and Trade Names [Member]
Summary Of Assigned Lives And Weighted Average Amortization Periods By Intangible Asset Category [Abstract]
Assigned Life	5 years
Weighted Average Amortization Period	5 years
Other Intangible Assets [Member]
Summary Of Assigned Lives And Weighted Average Amortization Periods By Intangible Asset Category [Abstract]
Weighted Average Amortization Period	3 years 7 months 6 days
Other Intangible Assets [Member] | Minimum [Member]
Summary Of Assigned Lives And Weighted Average Amortization Periods By Intangible Asset Category [Abstract]
Assigned Life	6 months
Other Intangible Assets [Member] | Maximum [Member]
Summary Of Assigned Lives And Weighted Average Amortization Periods By Intangible Asset Category [Abstract]
Assigned Life	5 years

Goodwill and Intangible Asset_6

Goodwill and Intangible Assets - Schedule of Future Amortization Expenses (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2023 (remaining three months)	$ 78
2024	301
2025	295
2026	98
Thereafter	0
Net Book Value	$ 772	$ 1,045

Balance Sheet Information - Add

Balance Sheet Information - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Allowance for credit losses	$ 110		$ 110		$ 92
Consigned inventory with customers	300		300		200
Allowance for inventory losses	3,300		3,300		$ 3,100
Depreciation and amortization	$ 500	$ 700	$ 1,600	$ 2,200
Equipment [Member]
Property, Plant and Equipment [Line Items]
Period over which assets are depreciated	5 years		5 years
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Period over which assets are depreciated	7 years		7 years
Building [Member]
Property, Plant and Equipment [Line Items]
Period over which assets are depreciated	30 years		30 years
Minimum [Member]
Property, Plant and Equipment [Line Items]
Standard term of accounts receivable			30 days
Minimum [Member] | Computer Equipment and Software Licenses [Member]
Property, Plant and Equipment [Line Items]
Period over which assets are depreciated	3 years		3 years
Maximum [Member]
Property, Plant and Equipment [Line Items]
Standard term of accounts receivable			90 days
Useful lives of the assets			1 year
Maximum [Member] | Computer Equipment and Software Licenses [Member]
Property, Plant and Equipment [Line Items]
Period over which assets are depreciated	5 years		5 years

Balance Sheet Information - Sum

Balance Sheet Information - Summary of Allowances for Accounts Receivable (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Credit loss provision	$ 110	$ 92
Credit allowances	24	40
Total allowances	$ 134	$ 132

Balance Sheet Information - All

Balance Sheet Information - Allowance for credit losses (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Balance at December 31, 2022	$ 92
Current period allowance for credit losses	18
Balance at September 30, 2023	$ 110

Balance Sheet Information - S_2

Balance Sheet Information - Summary of Inventories, Net (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Inventory, Net [Abstract]
Raw materials	$ 8,083	$ 9,064
Work-in-process	1,288	1,076
Finished goods	7,126	8,778
Inventories, net	$ 16,497	$ 18,918

Balance Sheet Information - S_3

Balance Sheet Information - Summary of Property and Equipment (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 35,362	$ 35,260
Less: Accumulated depreciation and amortization	(27,580)	(27,026)
Land	1,770	1,770
Property and equipment, net	9,552	10,004
Building [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	6,922	6,922
Computers and Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	10,772	10,217
Manufacturing and Test Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	14,192	14,661
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	1,491	1,475
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	1,965	1,965
Motor Vehicles [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 20	$ 20

Balance Sheet Information - S_4

Balance Sheet Information - Summary of Accrued Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Payables and Accruals [Abstract]
Inventory receipts	$ 2,024	$ 3,720
Paid time off	1,229	1,001
Payroll and other employee benefits	957	4,318
Professional fees and contractors	607	346
Deferred revenues	522	495
Operating leases	516	527
Employee stock purchase plan	434	232
Warranties	296	317	$ 309	$ 257
Income and sales taxes	227	836
Customer refunds for estimated returns	131	235
Real estate taxes	125	158
Finance leases	60	51
Other	234	369
Total	$ 7,362	$ 12,605

Balance Sheet Information - S_5

Balance Sheet Information - Summary of Long-term Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Liabilities, Noncurrent [Abstract]
Operating leases	$ 2,931	$ 3,327
Deferred revenue	173	181
Finance leases	129	73
Other	33	43
Total	$ 3,266	$ 3,624

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
Stock compensation expense	$ (294)	$ 1,147	$ 219	$ 3,007

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Stock-Based Compensation Expense by Type (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Stock Based Compensation [Line Items]
Total	$ (294)	$ 1,147	$ 219	$ 3,007
Service-based Awards [Member]
Stock Based Compensation [Line Items]
Total	353	447	1,044	1,150
Performance-based Awards - Short-term Incentive Plan [Member]
Stock Based Compensation [Line Items]
Total	(109)	346	0	689
Performance-based Awards - Long-term Incentive Plan [Member]
Stock Based Compensation [Line Items]
Total	(595)	278	(1,001)	949
Employee Stock Purchase Plan [Member]
Stock Based Compensation [Line Items]
Total	$ 57	$ 76	$ 176	$ 219

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock-Based Compensation (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock compensation expense	$ (294)	$ 1,147	$ 219	$ 3,007
Cost of Revenues [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock compensation expense	(1)	61	93	156
Research and Development [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock compensation expense	17	163	110	472
Sales and Marketing [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock compensation expense	(87)	241	21	694
General and Administrative [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock compensation expense	$ (223)	$ 682	$ (5)	$ 1,685

Stock-Based Compensation - Su_2

Stock-Based Compensation - Summary of Remaining Unrecognized Share-based Compensation Expense Related to Outstanding Share-based Awards (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($)
Service-based Awards [Member]
Stock Based Compensation [Line Items]
Remaining unrecognized share-based compensation expense	$ 1,505
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	$ 93
Share based compensation arrangement by share based payment award options weighted average life in years	10 months 24 days

Stock-Based Compensation - Su_3

Stock-Based Compensation - Summary of Service-based Restricted Stock Activity (Detail) - Restricted Stock [Member]	9 Months Ended
	Sep. 30, 2023 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested Beginning balance, Shares | shares	354,037
Shares awarded, Shares | shares	170,960
Shares vested, Shares | shares	(165,475)
Shares cancelled, Shares | shares	(25,376)
Unvested Ending balance, Shares | shares	334,146
Unvested Beginning balance, Weighted Average Fair Value | $ / shares	$ 6.12
Shares awarded, Weighted Average Fair Value | $ / shares	4.38
Shares vested, Weighted Average Fair Value | $ / shares	6.77
Shares cancelled, Weighted Average Fair Value | $ / shares	5.09
Unvested Ending balance, Weighted Average Fair Value | $ / shares	$ 4.98

Stock-Based Compensation - Rest

Stock-Based Compensation - Restricted Stock Units - Service Based - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Service Based Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares vested intrinsic value	$ 800	$ 800
Service Based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares vested intrinsic value	$ 55	$ 21

Stock-Based Compensation - Su_4

Stock-Based Compensation - Summary of Restricted Stock Unit Activity (Detail) - Restricted Stock Units (RSUs)	9 Months Ended
	Sep. 30, 2023 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested Beginning balance, Shares | shares	35,253
Units awarded, Shares | shares	6,200
Units vested/Shares awarded, Shares | shares	(12,252)
Unvested Ending balance, Shares | shares	29,201
Unvested Beginning balance, Weighted Average Fair Value | $ / shares	$ 5.42
Units awarded, Weighted Average Fair Value | $ / shares	4.21
Units vested/Shares awarded, Weighted Average Fair Value | $ / shares	5.57
Unvested Ending balance, Weighted Average Fair Value | $ / shares	$ 5.12

Stock-Based Compensation - St_2

Stock-Based Compensation - Stock Options - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2023 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Price	$ 4.16
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of termination of employment	180 days
Stock options granted period	7 years
Period of expected life, options granted	5 years

Stock-Based Compensation - Info

Stock-Based Compensation - Information about Stock Options Outstanding Under all Stock Plans (Detail) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($) $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number | shares	2,000
Options Outstanding, Contractual Life (Years)	1 year 4 months 13 days
Options Outstanding, Intrinsic Value | $	$ 0
Options Outstanding, Exercise Price | $ / shares	$ 6.98
Options Exercisable, Number | shares	2,000
Options Exercisable, Contractual Life (Years)	1 year 4 months 13 days
Options Exercisable, Intrinsic Value | $	$ 0
Options Exercisable, Exercise Price | $ / shares	$ 6.98

Stock-Based Compensation - Shor

Stock-Based Compensation - Short-Term Incentive Plan - Additional Information (Detail) - 2022 STIP [Member] - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Mar. 31, 2023	Sep. 30, 2023
Executives and Key Managers [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of incentive awards in shares	50%	50%
Percentage of incentive awards in cash	50%	50%
Payments of incentive awards in common stock	$ 1.2
Other Participants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of incentive awards in cash	100%

Stock-Based Compensation - Su_5

Stock-Based Compensation - Summary of Performance Share Activity (Detail) - Performance Related Awards [Member]	9 Months Ended
	Sep. 30, 2023 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested Beginning balance, Shares | shares	521,204
Awards granted | shares	230,355
Shares vested, Shares | shares	(53,345)
Shares cancelled, Shares | shares	(129,361)
Unvested Ending balance, Shares | shares	568,853
Unvested Beginning balance, Weighted Average Fair Value | $ / shares	$ 6.85
Shares awarded, Weighted Average Fair Value | $ / shares	4.46
Shares vested, Weighted Average Fair Value | $ / shares	8.70
Shares cancelled, Weighted Average Fair Value | $ / shares	6.25
Unvested Ending balance, Weighted Average Fair Value | $ / shares	$ 5.52

Stock-Based Compensation - Long

Stock-Based Compensation - Long-Term Incentive Plan - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	9 Months Ended
	Mar. 31, 2023	Sep. 30, 2023
2020 LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued	53,345
Intrinsic value	$ 0.2
2023 LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Revenue growth target performance period start date		Jan. 01, 2023
Revenue growth target performance period end date		Dec. 31, 2025
Total fair market value of award at target		$ 1
Shares awarded, Weighted Average Fair Value		$ 4.46
Number of shares earned		230,355
Maximum number of shares that may be issued		403,121

Stock-Based Compensation - Su_6

Stock-Based Compensation - Summary Of Active Performance-Based Long-Term Incentive Plans (Detail)	Sep. 30, 2023 shares
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	995,493
Target
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	568,853
2021 LTIP [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	245,520
2021 LTIP [Member] | Share Price On Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	8.23
2021 LTIP [Member] | Target
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	140,297
2022 LTIP [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	376,164
2022 LTIP [Member] | Share Price On Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	4.83
2022 LTIP [Member] | Target
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	214,951
2023 LTIP [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	373,809
2023 LTIP [Member] | Share Price On Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	4.55
2023 LTIP [Member] | Target
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	213,605

Stock-Based Compensation - Empl

Stock-Based Compensation - Employee Stock Purchase Plan ("ESPP") - Additional Information (Detail) - Employee Stock Purchase Plan [Member] - shares	3 Months Ended	9 Months Ended
	Mar. 31, 2023	Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of fair market value to determine purchase price		85%
Offering period		6 months
Rate of discount on fair market value of common stock under ESPP		15%
ESPP offering period shares purchased	100,613	95,342

Stock-Based Compensation - Calc

Stock-Based Compensation - Calculation of Fair Value of Each Employee Stock Purchase Grant Using the Black-Scholes Option-Pricing Model (Detail) - Employee Stock Purchase Plan [Member]	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Calculation of fair value of each employee stock purchase grant using the Black-Scholes option-pricing model
Dividend yield	5.20%	4.70%
Risk-free interest rate	4.60%	1.70%
Expected volatility	48.70%	48%
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 Millions	1 Months Ended	9 Months Ended
	Jun. 30, 2023	Sep. 30, 2023
New Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants vesting period		3 years
Common stock issued	10,893
Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants vesting period		1 year
Common stock issued	95,966
Restricted shares vested intrinsic value		$ 0.6

Stock-Based Compensation - Su_7

Stock-Based Compensation - Summary of Director Awards Activity (Detail) - Directors [Member]	9 Months Ended
	Sep. 30, 2023 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, Beginning balance, Shares | shares	120,696
Shares awarded, Shares | shares	106,859
Shares vested, Shares | shares	(120,696)
Outstanding, Ending balance, Shares | shares	106,859
Weighted Average Fair Value, Beginning balance | $ / shares	$ 4.02
Shares awarded, Weighted Average Fair Value | $ / shares	4.59
Shares vested, Weighted Average Fair Value | $ / shares	4.02
Weighted Average Fair Value, Ending balance | $ / shares	$ 4.59

Stock-Based Compensation - Em_2

Stock-Based Compensation - Employee Withholding Taxes on Stock Awards - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payment of withholding taxes related to stock awards	$ 712	$ 396
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	$ 700	$ 400

Benefit Plans - Additional Info

Benefit Plans - Additional Information (Detail) - Employee Benefit Plans [Member]	9 Months Ended
	Sep. 30, 2023
Defined Benefit Plan Disclosure [Line Items]
Maximum percentage of current compensation of employee to contribute in plan	15%
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer matches employee contribution percentage	4%

Benefit Plans - Summary of Cont

Benefit Plans - Summary of Contributions to Retirement Plans (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Defined Benefit Plan Disclosure [Line Items]
Contribution to retirement plans	$ 246	$ 242	$ 800	$ 783
US Employees [Member]
Defined Benefit Plan Disclosure [Line Items]
Contribution to retirement plans	186	187	629	593
Foreign Employees [Member]
Defined Benefit Plan Disclosure [Line Items]
Contribution to retirement plans	$ 60	$ 55	$ 171	$ 190

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Commitments And Contingencies Disclosure [Line Items]
Refund liability	$ 131	$ 235
Warranties	296	317	$ 309	$ 257
Warranty Reserves [Member]
Commitments And Contingencies Disclosure [Line Items]
Refund liability	100	$ 200
Warranties	$ 300		$ 300
Warranty Reserves [Member] | Antenna [Member] | Minimum [Member]
Commitments And Contingencies Disclosure [Line Items]
Repair and replacement warranty	1 year
Warranty Reserves [Member] | Antenna [Member] | Maximum [Member]
Commitments And Contingencies Disclosure [Line Items]
Repair and replacement warranty	10 years

Commitments and Contingencies_2

Commitments and Contingencies - Summary of Warranty Activity (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Beginning balance	$ 317	$ 257
Provisions for warranties	153	162
Consumption of reserves	(174)	(110)
Ending balance	$ 296	$ 309

Leases - Components of Lease Co

Leases - Components of Lease Cost (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Leases [Abstract]
Operating lease costs	$ 133	$ 119	$ 401	$ 377
Short-term lease costs	10	10	28	60
Variable lease costs	7	2	14	4
Amortization of finance lease assets	12	12	39	47
Interest on finance lease liabilities	1	1	3	4
Total lease cost	$ 163	$ 144	$ 485	$ 492

Leases - Schedule of Future Min

Leases - Schedule of Future Minimum Lease Payments under Operating and Finance Leases (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Operating Leases
2023 (remaining three months)	$ 134
2024	672
2025	582
2026	522
2027	505
Thereafter	1,675
Total minimum payments required	4,090
Less: amount representing interest	643
Present value of net minimum lease payments	3,447
Less: current maturities of lease obligations	(516)	$ (527)
Long-term lease obligations	2,931	3,327
Finance Leases
2023 (remaining three months)	15
2024	70
2025	52
2026	31
2027	26
Thereafter	20
Total minimum payments required	214
Less: amount representing interest	25
Present value of net minimum lease payments	189
Less: current maturities of lease obligations	(60)	(51)
Long-term lease obligations	$ 129	$ 73

Leases - Summary of Weighted Av

Leases - Summary of Weighted Average Remaining Lease Terms and Discount Rates (Detail)	Sep. 30, 2023
Leases [Abstract]
Weighted-average remaining lease term - finance leases	3 years 8 months 12 days
Weighted-average remaining lease term - operating leases	6 years 10 months 24 days
Weighted-average discount rate - finance leases	5.80%
Weighted-average discount rate - operating leases	5%

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Cash Flow Information Related to Leases (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Leases [Abstract]
Operating cash flows for operating leases	$ 150	$ 167	$ 584	$ 553
Operating cash flows for finance leases	1	1	3	4
Financing cash flows for finance leases	$ 24	$ 11	$ 52	$ 48

Leases - Schedule of Classifica

Leases - Schedule of Classification of ROU Assets and Lease liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
ASSETS
Operating right-of-use assets	$ 1,963	$ 2,241
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other noncurrent assets	Other noncurrent assets
Finance right-of-use assets	$ 198	$ 120
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other noncurrent assets	Other noncurrent assets
Total leased assets	$ 2,161	$ 2,361
Current
Operating lease	$ 516	$ 527
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued liabilities	Accrued liabilities
Finance lease	$ 60	$ 51
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued liabilities	Accrued liabilities
Noncurrent
Operating leases	$ 2,931	$ 3,327
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term liabilities	Long-term liabilities
Finance leases	$ 129	$ 73
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term liabilities	Long-term liabilities
Total lease liabilities	$ 3,636	$ 3,978

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Income Tax Disclosure [Line Items]
Income tax expense (benefit)	$ 77	$ (434)	$ 466	$ (396)
Statutory rate			21%	21%
Net deferred tax assets	14,700		$ 14,700		$ 15,300
Operating loss and credit carry forward, expiration period			The Company’s federal NOLs generated in 2018 and later periods will not expire, but the Company’s NOLs generated through December 31, 2017 have a finite life primarily based on the 20-year carry forward of federal net operating losses. The timing differences have a ratable reversal pattern over 12 years.
Net operating loss carry forward period			20 years
Domestic deferred tax assets ratable reversal pattern period			12 years
Gross unrecognized tax benefit	1,000		$ 1,000		$ 1,000
Domestic Tax Authority [Member]
Income Tax Disclosure [Line Items]
Net deferred tax assets	12,000		12,000
Foreign Tax Authority | China [Member]
Income Tax Disclosure [Line Items]
Net deferred tax assets	1,300		1,300
Foreign Tax Authority | Sweden [Member]
Income Tax Disclosure [Line Items]
Net deferred tax assets	$ 1,400		$ 1,400

Product Line and Geographic I_3

Product Line and Geographic Information - Result of Product Line Revenues and Gross Profits (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Results of operations by segments
Revenues	$ 17,385	$ 25,988	$ 60,936	$ 73,506
Gross Profit	$ 7,612	$ 11,936	$ 29,239	$ 32,696
Gross Profit %	43.80%	45.90%	48%	44.50%
Operating Segments [Member] | Antennas & Industrial IoT Devices [Member]
Results of operations by segments
Revenues	$ 13,172	$ 18,653	$ 43,145	$ 53,310
Gross Profit	$ 4,776	$ 6,562	$ 16,445	$ 17,435
Gross Profit %	36.30%	35.20%	38.10%	32.70%
Operating Segments [Member] | Test & Measurement Products [Member]
Results of operations by segments
Revenues	$ 4,234	$ 7,683	$ 17,891	$ 20,698
Gross Profit	$ 2,785	$ 5,544	$ 12,671	$ 15,466
Gross Profit %	65.80%	72.20%	70.80%	74.70%
Corporate, Non-Segment [Member]
Results of operations by segments
Revenues	$ (21)	$ (348)	$ (100)	$ (502)
Gross Profit	$ 51	$ (170)	$ 123	$ (205)

Product Line and Geographic I_4

Product Line and Geographic Information - Customers Accounted Revenues by Geographic Location (Detail) - Revenue [Member] - Geographic Concentration Risk [Member]	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Europe, Middle East, & Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	25%	20%	23%	22%
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	5%	7%	8%	6%
Other Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	4%	3%	4%	2%
Total Foreign Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	34%	30%	35%	30%

Product Line and Geographic I_5

Product Line and Geographic Information - Schedule of Revenues and Total Trade Accounts Receivable Represents Customer Accounted for 10% or More Percentage (Detail) - Customer Concentration Risk	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Revenue [Member] | Customer A
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk percentage	15%	18%	13%	15%
Revenue [Member] | Customer B
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk percentage	2%	11%	2%	9%
Trade Accounts Receivable [Member] | Customer A
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk percentage			15%		12%
Trade Accounts Receivable [Member] | Customer B
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk percentage			3%		12%
Trade Accounts Receivable [Member] | Customer C
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk percentage			4%		11%

Revenue from Contracts with C_2

Revenue from Contracts with Customers - Additional Information (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
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	$ 131,000		$ 235,000
Contract assets	0		0
Contract with customer liability, revenue recognized	1,200,000	$ 1,200,000
Accrued Liabilities [Member]
Disaggregation Of Revenue [Line Items]
Refund liability	100,000		200,000
Contract liability	800,000		900,000
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)	Sep. 30, 2023
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2023-10-01
Disaggregation Of Revenue [Line Items]
Period for performance obligation to provide software maintenance and support	1 year

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - Subsequent Event [Member] - Amphenol Corporation and Hilltop Merger Sub, Inc [Member]	Oct. 13, 2023 USD ($) $ / shares
Subsequent Event [Line Items]
Business combination termination related fees | $	$ 4,900,000
Common Stock [Member]
Subsequent Event [Line Items]
Offered price to be paid per share in business combination | $ / shares	$ 7