PC Tel (PCTI) 10-Q 8 Nov 16 2016 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2016	Nov. 07, 2016
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q3
Trading Symbol	PCTI
Entity Registrant Name	PC TEL INC
Entity Central Index Key	1,057,083
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		17,339,314

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
ASSETS
Cash and cash equivalents	$ 13,105	$ 7,055
Short-term investment securities	18,099	24,728
Accounts receivable, net of allowance for doubtful accounts of $252 and $314 at September 30, 2016 and December 31, 2015, respectively	17,997	21,001
Inventories, net	14,705	17,596
Prepaid expenses and other assets	1,300	1,586
Total current assets	65,206	71,966
Property and equipment, net	13,123	13,839
Goodwill	3,332	3,332
Intangible assets, net	4,724	11,378
Deferred tax assets, net	9,264	13,155
Other noncurrent assets	38	40
TOTAL ASSETS	95,687	113,710
LIABILITIES AND STOCKHOLDERS’ EQUITY
Accounts payable	5,307	6,735
Accrued liabilities	5,542	6,190
Total current liabilities	10,849	12,925
Other long-term liabilities	447	388
Total liabilities	11,296	13,313
Stockholders’ equity:
Common stock, $0.001 par value, 100,000,000 shares authorized, 17,350,796 and 17,654,236 shares issued and outstanding at September 30, 2016 and December 31, 2015, respectively	17	18
Additional paid-in capital	134,778	135,714
Accumulated deficit	(50,263)	(35,320)
Accumulated other comprehensive loss	(141)	(15)
Total stockholders’ equity	84,391	100,397
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 95,687	$ 113,710

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Statement Of Financial Position [Abstract]
Allowance for accounts receivable	$ 252	$ 314
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	17,350,796	17,654,236
Common stock, shares outstanding	17,350,796	17,654,236

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
REVENUES	$ 24,687	$ 26,526	$ 70,004	$ 80,477
COST OF REVENUES	15,750	18,063	44,779	52,495
GROSS PROFIT	8,937	8,463	25,225	27,982
OPERATING EXPENSES:
Research and development	2,451	2,863	7,581	8,506
Sales and marketing	3,396	3,603	9,925	10,558
General and administrative	2,890	2,847	9,157	9,513
Amortization of intangible assets	250	958	1,430	2,535
Impairment of intangible assets	0	0	4,724	0
Restructuring expenses	113	413	654	852
Total operating expenses	9,100	10,684	33,471	31,964
OPERATING LOSS	(163)	(2,221)	(8,246)	(3,982)
Other income, net	35	534	49	2,783
LOSS BEFORE INCOME TAXES	(128)	(1,687)	(8,197)	(1,199)
(Benefit) expense for income taxes	(303)	(625)	4,157	(451)
NET INCOME (LOSS)	$ 175	$ (1,062)	$ (12,354)	$ (748)
Net Income (Loss) per Share:
Basic	$ 0.01	$ (0.06)	$ (0.77)	$ (0.04)
Diluted	$ 0.01	$ (0.06)	$ (0.77)	$ (0.04)
Weighted Average Shares:
Basic	16,106	17,626	16,136	18,059
Diluted	16,245	17,626	16,136	18,059
Cash dividend per share	$ 0.05	$ 0.05	$ 0.15	$ 0.15

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income (Loss) (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement Of Income And Comprehensive Income [Abstract]
NET INCOME (LOSS)	$ 175	$ (1,062)	$ (12,354)	$ (748)
OTHER COMPREHENSIVE LOSS:
Foreign currency translation adjustments	(14)	(82)	(126)	(76)
COMPREHENSIVE INCOME (LOSS)	$ 161	$ (1,144)	$ (12,480)	$ (824)

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Stockholders' Equity - 9 months ended Sep. 30, 2016 - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid - In Capital [Member]	Retained Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
BALANCE at Dec. 31, 2015	$ 100,397	$ 18	$ 135,714	$ (35,320)	$ (15)
Stock-based compensation expense	3,187	0	3,187	0	0
Issuance of shares for stock purchase and option plans	649	0	649	0	0
Cancellation of shares for payment of withholding tax	(365)	0	(365)	0	0
Repurchase of common stock	(4,095)	(1)	(4,094)	0	0
Stock option forfeitures	(313)	0	(313)	0	0
Dividends paid	(2,589)	0	0	(2,589)	0
Net loss	(12,354)	0	0	(12,354)	0
Foreign currency translation adjustments	(126)	0	0	0	(126)
BALANCE at Sep. 30, 2016	$ 84,391	$ 17	$ 134,778	$ (50,263)	$ (141)

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Operating Activities:
Net loss	$ (12,354)	$ (748)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	4,335	5,261
Stock-based compensation	3,187	1,392
Impairment of intangible assets	4,724	0
Loss (gain) on disposal/sale of property and equipment	4	(18)
Restructuring costs	112	485
Payment of withholding tax on stock based compensation	(365)	(412)
Deferred tax provision	3,887	(640)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	2,946	8,641
Inventories	2,793	(908)
Prepaid expenses and other assets	280	(619)
Accounts payable	(1,360)	56
Income taxes payable	(153)	(110)
Other accrued liabilities	(891)	(3,535)
Deferred revenue	12	(1,044)
Net cash provided by operating activities	7,157	7,801
Investing Activities:
Capital expenditures	(1,699)	(1,583)
Proceeds from disposal of property and equipment	1	40
Purchases of investments	(47,552)	(20,277)
Redemptions/maturities of short-term investments	54,181	38,426
Purchase of assets	0	(20,500)
Net cash provided by (used in) investing activities	4,931	(3,894)
Financing Activities:
Proceeds from issuance of common stock	649	1,018
Payments for repurchase of common stock	(4,095)	(9,693)
Cash dividends	(2,589)	(2,770)
Net cash used in financing activities	(6,035)	(11,445)
Net increase (decrease) in cash and cash equivalents	6,053	(7,538)
Effect of exchange rate changes on cash	(3)	(7)
Cash and cash equivalents, beginning of year	7,055	20,432
Cash and Cash Equivalents, End of Period	$ 13,105	$ 12,887

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2016
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation	1. Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles 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 of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) 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, 2015. Nature of Operations PCTEL, Inc. (“PCTEL”, the “Company”, “we”, “ours”, and “us”) delivers P C T Segment Reporting PCTEL operates in two segments for reporting purposes, Connected Solutions and RF Solutions. The Company’s chief operating decision maker uses operating profits and identified assets for the Connected Solutions and RF Solutions segments to make operating decisions. Each segment has its own segment manager as well as its own engineering, sales and marketing, and operational general and administrative functions. All of the Company’s accounting and finance, human resources, IT and legal functions are provided on a centralized basis through the corporate function. The Company manages its balance sheet and cash flows centrally at the corporate level, with the exception of trade accounts receivable and inventory which is managed at the segment level. Each of the segment managers reports to and maintains regular contact with the chief operating decision maker to discuss operating activities, financial results, forecasts, or plans for the segment. Connected Solutions Segment Connected Solutions designs and delivers performance critical antennas and site solutions for wireless networks globally. The Company’s antennas and site solutions support networks worldwide, including SCADA for oil, gas and utilities, fleet management, industrial operations, health care, small cell and network timing deployment, defense, public safety, education, and broadband access. PCTEL's performance critical antenna solutions include high rejection and high performance GPS and GNSS products, the industry leading Yagi portfolio, mobile and indoor LTE, broadband, and LMR antennas and PIM-rated antennas for transit, in-building, and small cell applications. The Company leverages its design, logistics, and support capabilities to deliver performance critical site solutions into carrier, railroad, and utility applications. Revenue growth for antenna and site solutions is primarily driven by the increased use of wireless communications in these vertical markets. PCTEL’s antenna and site solution products are primarily sold through distributors, value-added resellers, and original equipment manufacturer (“OEM”) providers. There are many competitors for antenna products, as the market is highly fragmented. Competitors include Laird (Cushcraft, Centurion, and Antennex products), Mobile Mark, Radiall/Larsen, Comtelco, Wilson, Commscope (Andrew products), and Kathrein, among others. The Company seeks out product applications that command a premium for product performance and customer service, and avoids commodity markets. PCTEL maintains expertise in several technology areas in order to be competitive in the antenna engineered site solutions market. These include radio frequency engineering, mobile antenna design and manufacturing, mechanical engineering, product quality and testing, and wireless network engineering. RF Solutions Segment RF Solutions develops and provides performance critical test equipment, software, and engineering services for wireless networks. The industry relies upon PCTEL to benchmark network performance, analyze trends, and optimize wireless networks. SeeGull ® On February 27, 2015, PCTEL acquired substantially all of the assets of, and assumed certain specified liabilities of, Nexgen Wireless, Inc. (“Nexgen”), pursuant to an Asset Purchase Agreement dated as of February 27, 2015. From the acquired business, the Company provides a network analysis tool portfolio now known as SeeHawk ® PCTEL maintains expertise in several technology areas in order to be competitive in the scanning receiver and related engineering services market. These include radio frequency engineering, DSP engineering, manufacturing, mechanical engineering, product quality and testing, and wireless network engineering. Basis of Consolidation The condensed consolidated balance sheet as of September 30, 2016 and the condensed consolidated statements of operations, statements of comprehensive loss, and cash flows for the nine months ended September 30, 2016 and 2015, respectively, 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 interim condensed consolidated financial statements are derived from the audited financial statements as of December 31, 2015. Certain prior year amounts have been reclassified for consistency with the current period presentation. The statements of operations for the three and nine months ended September 30, 2015 include reclassifications between cost of revenues and operating expenses for intangible amortization. The Company reclassified $0.2 million and $0.4 million from operating expense to cost of revenues for the three and nine months ended September 30, 2015, respectively. These reclassifications did not affect the operating loss or net income for the three and nine months ended September 30, 2015. 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 accounting principles generally accepted in the U.S. have been condensed or omitted. The significant accounting policies followed by the Company are set forth within the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 (“the 2015 Form 10-K”). There were no changes in the Company’s significant accounting policies during the nine months ended September 30, 2016. In addition, the Company reaffirms the use of estimates in the preparation of the financial statements as set forth in the 2015 Form 10-K. These interim condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and notes thereto included in the 2015 Form 10-K. The results of operations for the period ended September 30, 2016 may not be indicative of the results for the period ending December 31, 2016. Foreign Operations The Company is exposed to foreign currency fluctuations due to its foreign operations and because products are sold internationally. The functional currency for the Company’s foreign operations is predominantly the applicable local currency. Accounts of foreign operations are translated into U.S. dollars using the exchange rate in effect at the applicable balance sheet date for assets and liabilities and average monthly rates prevailing during the period for revenue and expense accounts. Adjustments resulting from translation are included in accumulated other comprehensive income (loss), a separate component of shareholders’ equity. Gains and losses resulting from other transactions originally in foreign currencies and then translated into U.S. dollars are included in the condensed consolidated statement of operations. Net foreign exchange gains resulting from foreign currency transactions included in other income, net were $11 and $5 for the three months ended September 30, 2016 and 2015, respectively. Net foreign exchange losses resulting from foreign currency transactions included in other income, net were ($24) and ($23) for the nine months ended September 30, 2016 and 2015, respectively. Recent Accounting Pronouncements In August 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2016-15 , In March 2016, the FASB issued ASU No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. ASU No. 2016-09 affects all entities that issue share-based payment awards to their employees. ASU No. 2016-09 simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows, including recognizing all excess tax benefits and tax deficiencies as income tax expense or benefit in the income statement rather than in additional paid-in capital. ASU No. 2016-09 is effective for financial statements issued for annual reporting periods beginning after December 15, 2016 and interim periods within those years. Earlier application is permitted. The Company is currently evaluating the impact the standard may have on its consolidated financial statements and related disclosures. In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842),” which requires lessees to recognize assets and liabilities for the rights and obligations created by most leases on their balance sheet. The guidance is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application is permitted. ASU 2016-02 requires modified retrospective adoption for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. The Company is currently evaluating the impact the standard may have on its consolidated financial statements and related disclosures. In November 2015, the FASB issued ASU 2015-17, Balance Sheet Classification of Deferred Taxes, to simplify the presentation of deferred income taxes. The amendments in this update require that deferred tax assets and liabilities be entirely classified as noncurrent within the statement of financial position. Effective December 31, 2015, the Company early adopted the balance sheet classification of deferred taxes on a prospective basis. The guidance requires deferred tax assets and liabilities to be classified as noncurrent rather than split between current and noncurrent. Approximately $1.8 million in current deferred tax assets was reclassified to long-term deferred tax assets at December 31, 2015. In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers” which introduces a new revenue recognition model in which an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 defines a five step process to achieve this core principle and, in doing so, more judgment and estimates may be required within the revenue recognition process than are required under existing U.S. GAAP. This ASU also requires disclosures sufficient to enable users to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers, including qualitative and quantitative disclosures about contracts with customers, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. The FASB has voted to approve a one-year deferral of the effective date from January 1, 2017 to January 1, 2018, while allowing for early adoption as of January 1, 2017. The new accounting standard is expected to have an impact to the Company’s consolidated financial statements. The Company is currently evaluating the adoption method options and the impact of the new guidance on our consolidated financial statements.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2016
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 and other investments are financial assets with carrying values that approximate fair value due to the short-term nature of these assets. Accounts payable is a financial liability with a carrying value that approximates fair value due to the short-term nature of these liabilities.

Earnings per Share

Earnings per Share	9 Months Ended
	Sep. 30, 2016
Earnings Per Share [Abstract]
Earnings per Share	3. Earnings per Share The following table is the computation of basic and diluted earnings per share: Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Basic Earnings Per Share computation: Numerator: Net (loss) income $ 175 $ (1,062 ) $ (12,354 ) $ (748 ) Denominator: Common shares outstanding 16,106 17,626 16,136 18,059 Earnings per common share - basic Net (loss) income $ 0.01 $ (0.06 ) $ (0.77 ) $ (0.04 ) Diluted Earnings Per Share computation: Denominator: Common shares outstanding 16,106 17,626 16,136 18,059 Restricted shares subject to vesting 139 * * * Common stock option grants 0 * * * Total shares 16,245 17,626 16,136 18,059 Earnings per common share - diluted Net (loss) income $ 0.01 $ (0.06 ) $ (0.77 ) $ (0.04 ) * As denoted by “*” in the table above, the weighted average common stock option grants and restricted shares of 140,000 for the nine months ended September 30, 2016 and 183,000 and 369,000 for the three and nine months ended September 30, 2015, respectively, were excluded from the calculations of diluted net loss per share since their effects are anti-dilutive.

Cash, Cash Equivalents and Inve

Cash, Cash Equivalents and Investments	9 Months Ended
	Sep. 30, 2016
Cash And Cash Equivalents [Abstract]
Cash, Cash Equivalents and Investments	4. Cash, Cash Equivalents and Investments The Company’s cash and investments consisted of the following: September 30, December 31, 2016 2015 Cash $ 5,426 $ 6,077 Cash equivalents 7,679 978 Short-term investments 18,099 24,728 $ 31,204 $ 31,783 Cash and Cash equivalents At September 30, 2016, cash and cash equivalents included bank balances and investments with original maturities less than 90 days. At September 30, 2016 and December 31, 2015, 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 cash in the Company’s U.S. banks is insured by the Federal Deposit Insurance Corporation up to the insurable limit of $250. At September 30, 2016, the Company had $5.4 million in cash and $7.7 million in cash equivalents, and at December 31, 2015, the Company had $6.1 million in cash and $1.0 million in cash equivalents. The Company had $2.3 million and $1.3 million of cash and cash equivalents in foreign bank accounts at September 30, 2016 and December 31, 2015, respectively. Within the cash in foreign bank accounts, the Company had cash of $2.0 million and $0.8 million in China bank accounts at September 30, 2016 and December 31, 2015, respectively. The Company expects to repatriate the cash from its subsidiary in Israel during 2017. The Company ceased ongoing operations of this subsidiary during the third quarter 2016 and expects to liquidate the subsidiary in 2017. In December 2015 the Company recorded the expense for the estimated incremental income tax of $0.1 million related to the repatriation of the funds from Israel. The Company does not expect the foreign currency exchange related to the repatriation of these funds to have a material impact on the financial statements. As of September 30, 2016, the Company has no intentions of repatriating the cash in its foreign bank accounts in the U.K. or China. If the Company decides to repatriate the cash in the foreign bank accounts, it may experience difficulty in doing so in a timely manner. The Company may also be exposed to foreign currency fluctuations and taxes if it repatriates these funds. The Company’s cash in its foreign bank accounts is not insured. Investments At September 30, 2016 and December 31, 2015, the Company’s short-term investments consisted of pre-refunded municipal bonds, U.S. government agency bonds, AA or higher rated corporate bonds, and certificates of deposit, all classified as held-to-maturity. At September 30, 2016, the Company had invested $4.7 million in AA rated or higher corporate bonds, $3.5 million in U.S. government agency bonds, $5.8 million in pre-refunded municipal bonds and $4.1 million in certificates of deposit. The income and principal from the pre-refunded municipal bonds are secured by an irrevocable trust of U.S. Treasury securities. The bonds have original maturities greater than 90 days and mature in less than one year. The Company’s bond investments are recorded at the purchase price and carried at amortized cost. The net unrealized gains (losses) were $(8) and $1 at September 30, 2016 and December 31, 2015, respectively. Approximately 6% and 11% of the Company’s bond investments were protected by bond default insurance at September 30, 2016 and December 31, 2015, respectively. At December 31, 2015, the Company had invested $7.6 million in AA rated or higher corporate bond funds, $7.5 million in pre-refunded municipal bonds and taxable bond funds, $7.0 million in U.S. government agency bonds, and $2.7 million in certificates of deposit. 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 2 investments, the Company uses quoted prices of similar assets in active markets. Cash equivalents and Level 1 and Level 2 investments measured at fair value were as follows at September 30, 2016 and December 31, 2015: September 30, 2016 December 31, 2015 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Cash equivalents: Money market funds and other cash equivalents $ 7,677 $ 0 $ 0 $ 7,677 $ 978 $ 0 $ 0 $ 978 Investments: Pre-refunded municipal bonds 0 5,783 0 5,783 0 7,497 0 7,497 Corporate bonds 0 4,686 0 4,686 0 7,558 0 7,558 US government agency bonds 0 3,500 0 3,500 0 7,008 0 7,008 Certificates of deposit 4,124 0 0 4,124 2,666 0 0 2,666 Total $ 11,801 $ 13,969 $ 0 $ 25,770 $ 3,644 $ 22,063 $ 0 $ 25,707

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	5. Goodwill and Intangible Assets Goodwill There were no changes to goodwill during the nine months ended September 30, 2016. The $3.3 million of goodwill on the balance sheet was recorded in February 2015 as part of the purchase accounting for the Nexgen acquisition and was assigned to the RF Solutions segment. For evaluation purposes, this goodwill is part of the products reporting unit within the RF Solutions segment. There were no triggering events for the products reporting unit of the RF Solutions segment during the quarter ended September 30, 2016. The Company will continue to monitor goodwill going forward. Intangible Assets The Company amortizes intangible assets with finite lives on a straight-line basis over the estimated useful lives, which range from one to eight years. Amortization expense was approximately $0.4 million and $1.1 million for the three months ended September 30, 2016 and 2015, respectively. Amortization expense was approximately $1.9 million and $3.0 million for the nine months ended September 30, 2016 and 2015, respectively. Amortization for technology assets is included in cost of revenues and amortization for all other intangible assets is included in operating expenses. For the three and nine months ended September 30, 2016, $0.2 million and $0.5 million of the amortization expense was included in cost of revenues. For the three and nine months ended September 30, 2015, $0.2 million and $0.4 million of the amortization expense was included in cost of revenues. The summary of other intangible assets, net is as follows: September 30, 2016 December 31, 2015 Accumulated Net Book Accumulated Net Book Cost Amortization Value Cost Amortization Value Customer contracts and relationships $ 25,497 $ 24,344 $ 1,153 $ 25,497 $ 18,616 $ 6,881 Patents and technology 10,114 7,837 2,277 10,114 7,337 2,777 Trademarks and trade names 4,960 4,022 938 4,960 3,738 1,222 Other 2,743 2,387 356 2,743 2,245 498 $ 43,314 $ 38,590 $ 4,724 $ 43,314 $ 31,936 $ 11,378 The $6.6 million decrease in the net book value of intangible assets at September 30, 2016 compared to December 31, 2015 consists of amortization expense of $1.9 million recorded for the nine months ended September 30, 2016 and $4.7 million recorded for impairment of customer relationships that was recorded in the second quarter 2016. During the second quarter of 2016 the revenue and contribution margin of the services reporting unit within the RF Solutions segment were below the forecast that was used during the intangible asset impairment test at March 31, 2016. While the sequential quarterly revenue and contribution margin improved, it is still reflective of a long-term slowdown in the DAS market which is the primary market addressed by our service offering. The Company considered the changes to its forecast and the industry and market trends as a triggering event to assess the intangible assets of the service reporting unit for impairment. The Company reviewed its intangible assets for impairment by performing a test of recoverability. This test of recoverability failed because the undiscounted cash flows were below the carrying value of the services reporting unit. Based on this result, the Company calculated the fair value of the services reporting unit with the assistance of a third-party valuation firm. The cash flow forecast prepared by the Company included assumptions for revenues, gross margins, operating expenses, and the fair value included an assumption for the discount rate. The fair value of the services reporting unit was calculated at $4.7 million below its carrying value. The Company allocated the shortfall to the long-lived assets of the services reporting unit to derive new fair values of the individual long-lived assets. The Company compared these adjusted fair values of the individual long-lived assets with the individually calculated or determined fair values of each long-lived asset. Based on this analysis, the Company recorded 100% of the shortfall to its customer relationships as an impairment charge. The Company is amortizing the remaining balance of the customer relationships for the services reporting unit over its remaining useful life. The assigned lives and weighted average amortization periods by intangible asset category is summarized below: Intangible Assets Assigned Life Weighted Average Amortization Period Customer contracts and relationships 4 to 6 years 5.0 Patents and technology 3 to 6 years 5.1 Trademarks and trade names 3 to 8 years 5.5 Other 1 to 6 years 3.4 The Company’s scheduled amortization expense for 2016 and the next four years is as follows: Fiscal Year Amount 2016 $ 2,318 2017 $ 1,497 2018 $ 1,419 2019 $ 1,221 2020 $ 199

Balance Sheet Information

Balance Sheet Information	9 Months Ended
	Sep. 30, 2016
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Balance Sheet Information	6. Accounts Receivable and Allowance for Doubtful Accounts Accounts receivable are recorded at invoiced amount with standard net terms that range between 30 and 60 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 maintains an allowance for doubtful accounts for estimated uncollectible accounts receivable. The allowance is based on the Company’s assessment of known delinquent accounts, historical experience, and other currently available evidence of the collectability and the aging of accounts receivable. The Company’s allowance for doubtful accounts was $0.3 million each at September 30, 2016 and at December 31, 2015. The provision for doubtful accounts is included in sales and marketing expense in the condensed consolidated statements of operations. Inventories Inventories are stated at the lower of cost or market and include material, labor and overhead costs using the first-in, first-out (“FIFO”) method of costing. Inventories as of September 30, 2016 and December 31, 2015 were composed of raw materials, sub-assemblies, finished goods and work-in-process. The Company had consigned inventory with customers of $0.5 million and $0.7 million at September 30, 2016 and December 31, 2015, respectively. The Company records allowances to reduce the value of inventory to the lower of cost or market, including allowances for excess and obsolete inventory. Reserves for excess inventory are calculated based on our estimate of inventory in excess of normal and planned usage. Obsolete reserves are based on our identification of inventory where carrying value is above net realizable value. The allowance for inventory losses was $2.8 million at September 30, 2016 and $2.2 million at December 31, 2015. Inventories consisted of the following: September 30, December 31, 2016 2015 Raw materials $ 8,903 $ 11,012 Work in process 1,097 917 Finished goods 4,705 5,667 Inventories, net $ 14,705 $ 17,596 Prepaid and Other Current Assets Prepaid assets are stated at cost and are amortized over the useful lives (up to one year) of the assets. Property and Equipment Property and equipment are stated at cost and are depreciated using the straight-line method over the estimated useful lives of the assets. The Company depreciates computer equipment over three to five years, office equipment, manufacturing and test equipment, and motor vehicles over five years, furniture and fixtures over seven years, and buildings over 30 years. Leasehold improvements are amortized over the shorter of the corresponding lease term or useful life. Depreciation expense and gains and losses on the disposal of property and equipment are included in cost of sales and operating expenses in the condensed consolidated statements of operations. Maintenance and repairs are expensed as incurred. Property and equipment consisted of the following: September 30, December 31, 2016 2015 Building $ 6,341 $ 6,227 Computers and office equipment 11,645 10,931 Manufacturing and test equipment 13,041 12,826 Furniture and fixtures 1,240 1,273 Leasehold improvements 1,228 1,001 Motor vehicles 19 42 Total property and equipment 33,514 32,300 Less: Accumulated depreciation and amortization (22,161 ) (20,231 ) Land 1,770 1,770 Property and equipment, net $ 13,123 $ 13,839 Depreciation and amortization expense was approximately $0.8 million for the three months ended September 30, 2016 and 2015, respectively, and approximately $2.4 million and $2.3 Liabilities Accrued liabilities consisted of the following: September 30, December 31, 2016 2015 Inventory receipts $ 1,379 $ 1,628 Payroll, bonuses, and other employee benefits 1,293 1,179 Paid time off 1,199 1,271 Income and sales taxes 443 381 Warranties 319 348 Restructuring 186 237 Professional fees and contractors 167 305 Employee stock purchase plan 120 280 Real estate taxes 114 161 Deferred revenues 76 65 Other 246 335 Total $ 5,542 $ 6,190 Long-term liabilities consist of the following: September 30, December 31, 2016 2015 Long-term obligations under capital leases $ 174 $ 107 Deferred rent 171 250 Restructuring 93 0 Deferred revenues 9 31 Total $ 447 $ 388

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2016
Business Combinations [Abstract]
Acquisitions	7. Acquisitions Business combinations are accounted for using the acquisition method of accounting. In general, the acquisition method requires acquisition-date fair value measurement of identifiable assets acquired, liabilities assumed, and non-controlling interests in the acquiree. The measurement requirements result in the recognition of the full amount of acquisition-date goodwill, which includes amounts attributable to non-controlling interests. Neither the direct costs incurred to effect a business combination nor the costs the acquirer expects to incur under a plan to restructure an acquired business may be included as part of the business combination accounting. As a result, those costs are charged to expense when incurred, except for debt or equity issuance costs, which are accounted for in accordance with other generally accepted accounting principles. Acquisition of Nexgen Wireless, Inc. On February 27, 2015, the Company acquired substantially all of the assets of, and assumed certain specified liabilities of, Nexgen Wireless, Inc., an Illinois corporation (“Nexgen”), pursuant to an Asset Purchase Agreement dated as of February 27, 2015 (the “Nexgen APA”) among PCTEL, Inc., Nexgen, Bhumika Thakkar 2012 Irrevocable Trust Number One, Bhumika Thakkar 2012 Irrevocable Trust Number Two, and Jigar Thakkar (collectively, such trusts and Mr. Thakkar are the “Nexgen Shareholders”), and Bhumika Thakkar (collectively with Nexgen and the Nexgen Shareholders, the “Nexgen Parties”). Nexgen provided a network analysis tool portfolio and engineering services. Nexgen’s software product portfolio translates real-time network performance data into engineering actions to optimize operator performance and supports crowd-based, cloud-based data analysis to enhance network performance. The business provides performance engineering, specialized staffing, and trend analysis for carriers, infrastructure vendors, and neutral hosts for 2G, 3G, 4G, and LTE networks. The purchase consideration for the Nexgen business was $21.4 million, consisting of $18.25 million in cash paid at closing, $2.25 million held in escrow, an estimated $0.8 million excess working capital true-up to be paid in cash, and a contingency payment that was provisionally calculated with a fair value of $0.1 million. The contingent payment was dependent on the achievement of revenue-based goals pertaining to the acquired business for the period commencing on March 1, 2015 and ending on April 30, 2016. The purchase consideration paid in cash was provided from the Company’s existing cash. The Company incurred transaction costs of $0.8 million for the acquisition of Nexgen primarily related to investment banking, accounting, legal, and due diligence consulting services. The assets acquired from Nexgen consisted primarily of customer relationships, intellectual property (including trade names), working capital (accounts receivable, work in process, accounts payable and accrued liabilities), and fixed assets. The Nexgen Parties are bound by non-competition covenants under the Nexgen APA, which generally expire on February 27, 2019. The Company calculated the fair value of the customer relationships, trade names, and non-compete agreement assets acquired by using the present value of future discounted cash flows. For the new technology, the Company used the replacement cost method for its valuation. The intangible assets recorded have a weighted average amortization period of 5.0 years. On April 7, 2015, Samsung Electronics America, Inc., as successor in interest to Samsung Telecommunications America, LLC (“Samsung”), provided Nexgen and the Company with a final notice of Samsung’s election to terminate, effective April 30, 2015, the Contractor Services Agreement, dated May 2, 2012 (the “CSA”), by and between Samsung and Nexgen. On May 5, 2015, the Company and the Nexgen Parties entered into an Amendment to the Asset Purchase Agreement (the “Nexgen APA Amendment”) with the following principal terms: (a) Nexgen agreed to transfer to the Company previously excluded accounts receivable with an aggregate value of $0.8 million; (b) the aggregate amount potentially payable to the Nexgen Parties as contingent consideration was reduced from $2.0 million to $1.0 million; (c) the Company waived its right to seek additional indemnification from the Nexgen Parties for matters specified therein; (d) the parties directed that $2.25 million in escrowed funds potentially payable to the Nexgen Parties pursuant to the Nexgen APA be released to the Company; (e) Mr. Thakkar relinquished a portion of the equity awards previously granted to him; and (f) the Company released various potential claims against Nexgen and the Nexgen Parties with respect to the termination of the CSA and related matters. The measurement period for the revised contingent consideration amount commenced on January 1, 2016 and ends on December 31, 2016 and is dependent on software revenue-based goals pertaining to the acquired business. As of September 30, 2016 and December 31, 2015, respectively, the Company estimated that the contingent liability would be $0. The amendment terms were accounted for consistent with accounting for legal settlements, as there is not a clear and direct link between the settlement and the acquisition price. During June 2015, the Company received the cash from the escrow fund and the previously excluded accounts receivable. These amounts are recorded in Other Income, net in the condensed consolidated statements of operations. Approximately 78% of Nexgen’s revenue was related to the U.S. Sprint cellular network, contracted either with Samsung or Sprint directly. During due diligence, the Company modeled a likely range of future revenue and cash flow based on the high degree of customer concentration risk. While the terminated CSA represented a material portion of that revenue, the resulting total future revenue and cash flow remained within the lower range of the forecast model. The Company utilized the lower end of the forecast range in evaluating the fair value of the acquired assets. The purchase accounting related to the valuation of certain tangible and intangible assets was complete as of December 31, 2015. The valuation yielded goodwill of $3.3 million, of which $1.5 million was related to the assembled workforce. The goodwill is deductible for income tax purposes. The following is the allocation of the purchase price for the assets from Nexgen at the date of the acquisition as of December 31, 2015: Tangible assets: Accounts receivable $ 5,358 Prepaid and other assets 49 Deferred cost of sales 24 Fixed assets 43 Total tangible assets 5,474 Intangible assets: Customer relationships 8,117 Trade names 972 Technology 3,332 Backlog 162 Non-compete 583 Goodwill 3,332 Total intangible assets 16,498 Total assets 21,972 Accounts payable 200 Accrued liabilities 341 Total liabilities 541 Net assets acquired $ 21,431 A reconciliation of the assets acquired with the cash paid at closing is as follows: Net assets acquired $ 21,431 Due Nexgen - contingent liability (91 ) Due Nexgen - working capital adjustment (840 ) Cash paid at closing $ 20,500 The Company did not have any material relationship with Mr. Thakkar and the other Nexgen Parties other than in respect of the Nexgen APA, the Nexgen APA Amendment and the transactions provided for therein. Effective November 2015, Mr. Thakkar resigned from his role as the Company’s Vice President and Chief Technology Officer, Network Analytics. The Company assumed Nexgen’s existing lease for Nexgen’s offices in Schaumburg, Illinois. Effective March 2016, the Company exercised its right of early termination of the Schaumburg lease. The lease termination was effective as of August 31, 2016. The Company moved the employees from the Schaumburg office to its Bloomingdale office prior to the termination date. The Nexgen services acquired in 2015 were integrated into the existing RF engineering services operation and the data analytics products were integrated in the RF scanner product line. The Company recognizes revenue for the engineering services under the completed performance method. For specialized staffing, the Company recognizes revenue as services are provided to the customer. The Company’s results for the nine months ended September 30, 2015 include the operating results for the business acquired from Nexgen from the acquisition date. The following unaudited pro forma financial information gives effect to the acquisition of the Nexgen business as if the acquisition had taken place on January 1, 2015. The pro forma financial information for Nexgen was derived from the historical accounting records of Nexgen. (unaudited) Nine September 30, 2015 REVENUES $ 83,435 NET INCOME $ (719 ) Net Income per Share $ (0.04 ) Since the Nexgen acquisition occurred in February 2015, pro forma information is presented for the nine months ended September 30, 2015. The pro forma results include adjustments for intangible amortization of $0.3 million for the three months ended March 31, 2015. The pro forma information is presented for illustrative purposes only and may not be indicative of the results that would have been obtained had the acquisition actually occurred on January 1, 2015, nor is it necessarily indicative of the Company’s future consolidated results of operations or financial position.

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	8. Stock-Based Compensation The condensed consolidated statements of operations include $0.9 million and $3.2 million of stock compensation expense for the three and nine months ended September 30, 2016, respectively. Stock compensation expense for the three months ended September 30, 2016 consists of $0.6 million for time-based restricted stock awards, $0.3 million for stock bonuses related to the short-term incentive plan (“STIP”), $13 for stock options and $42 for the Employee Stock Purchase Plan (“ESPP”). Stock compensation expense for the nine months ended September 30, 2016 consists of $2.1 million for time-based restricted stock awards, $0.4 million for shares to directors, $0.4 million for stock bonuses related to the STIP, $0.1 million for stock options and $0.1 million for the ESSP. The condensed consolidated statements of operations include $0.7 million and $1.4 million of stock compensation expense for the three and nine months ended September 30, 2015, respectively. Stock compensation expense for the three months ended September 30, 2015 consists of $0.5 million for time-based restricted stock awards, $33 related to performance awards, $57 for stock options, and $55 for the ESPP. The Company did not capitalize any stock compensation expense during the three and nine months ended September 30, 2016 or 2015. Total stock-based compensation is reflected in the condensed consolidated statements of operations as follows: Three Months Ended Nine Months Ended September 30 September 30 2016 2015 2016 2015 Cost of revenues $ 61 $ 115 $ 325 $ 244 Research and development 183 99 525 244 Sales and marketing 158 230 486 370 General and administrative 542 206 1,851 534 Total $ 944 $ 650 $ 3,187 $ 1,392 Restricted Stock – Service Based The Company grants restricted shares as employee incentives. When service-based restricted stock is granted to employees, the Company records deferred stock compensation within additional paid in capital, representing the fair value of the common stock on the date the restricted shares are granted. The Company records stock compensation expense on a straight-line basis over the vesting period of the applicable service-based restricted shares. These grants vest over various periods, but typically vest over four years. The following table summarizes service-based restricted stock activity for the nine months ended September 30, 2016: Weighted Average Grant Date Shares Fair Value Unvested Restricted Stock Awards - December 31, 2015 1,050,172 $ 6.11 Shares awarded 452,300 5.61 Shares vested (204,398 ) 6.61 Shares cancelled (134,726 ) 6.17 Unvested Restricted Stock Awards - September 30, 2016 1,163,348 $ 5.83 The intrinsic value of service-based restricted shares that vested during the three months ended September 30, 2016, and 2015, was $0.6 million and $57, respectively. The intrinsic value of service-based restricted shares that vested during the nine months ended September 30, 2016, and 2015, was $1.0 million and $1.1 million, respectively. At September 30, 2016, total unrecognized compensation expense related to restricted stock was approximately $3.7 million, net of forfeitures to be recognized through 2020 over a weighted average period of 1.8 years. Restricted Stock Units – Service Based The Company grants restricted stock units as employee incentives. Restricted stock units are primarily granted to foreign employees for long-term incentive purposes. Employee restricted stock units are service-based awards and are amortized over the vesting period. At the vesting date, these units are converted to shares of common stock. The Company records expense on a straight-line basis for restricted stock units. The following table summarizes the restricted stock unit activity during the nine months ended September 30, 2016: Weighted Average Grant Date Units Fair Value Unvested Restricted Stock Units - December 31, 2015 22,725 $ 5.65 Units awarded 15,000 5.61 Units vested (1,337 ) 7.25 Unvested Restricted Stock Units - September 30, 2016 36,388 $ 5.57 The intrinsic value of service-based restricted stock units that vested and were issued as shares during the nine months ended September 30, 2016 was $7. No units vested during the three months ended September 30, 2016. The intrinsic value of service-based restricted stock units that vested and issued as shares during the nine months ended September 30, 2015 was $20. As of September 30, 2016, the unrecognized compensation expense related to the unvested portion of the Company’s restricted stock units was approximately $0.1 million, to be recognized through 2020 over a weighted average period of 1.3 years. Stock Options The Company grants stock options to purchase common stock as long-term incentives. The Company issues stock options with an exercise price no less than the fair value of the Company’s stock on the grant date. The Company grants new stock options with a seven-year life that contain installment vesting over a period of four years, 25% after one year, and monthly thereafter. Stock options may be exercised at any time prior to their expiration date or within ninety days of termination of employment, or such shorter time as may be provided in the related stock option agreement. A summary of the Company’s stock option activity for the nine months ended September 30, 2016 is as follows: Weighted Average Options Exercise Outstanding Price Outstanding at December 31, 2015 1,220,442 $ 7.72 Granted 24,500 4.95 Expired or Cancelled (294,229 ) 8.84 Forfeited (63,471 ) 7.24 Outstanding at September 30, 2016 887,242 $ 7.31 Exercisable at September 30, 2016 662,089 $ 7.39 There were 24,500 options granted during the three months and nine months ended September 30, 2016. There were no exercises of stock options during the nine months ended September 30, 2016. During the nine months ended September 30, 2015, the Company received proceeds of $0.3 million from the exercise of 35,134 options. The intrinsic value of these options exercised was $34. The range of exercise prices for options outstanding and exercisable at September 30, 2016, was $4.50 to $11.00. The following table summarizes information about stock options outstanding under all stock option plans: Options Outstanding Options Exercisable Weighted Average Weighted- Weighted Range of Number Contractual Life Average Number Average Exercise Prices Outstanding (Years) Exercise Price Exercisable Exercise Price $ 4.50 -- $ 6.00 36,379 6.46 $ 5.28 1,755 $ 5.90 6.01 -- 6.50 16,267 2.54 6.23 16,267 6.23 6.51 -- 7.00 37,522 1.65 6.85 36,251 6.86 7.01 -- 7.50 641,360 3.43 7.17 499,454 7.17 7.51 -- 8.00 18,000 4.04 7.80 12,352 7.81 8.01 -- 8.50 75,232 4.73 8.12 35,415 8.14 8.51 -- 9.00 6,750 2.83 8.76 5,301 8.77 9.01 -- 9.50 38,832 0.38 9.29 38,832 9.29 9.51 -- 10.00 15,500 1.97 9.63 15,062 9.63 10.01 -- 11.00 1,400 1.84 10.46 1,400 10.46 $ 4.50 -- $ 11.00 887,242 3.42 $ 7.31 662,089 $ 7.39 The weighted average contractual life and intrinsic value at September 30, 2016, was the following: Weighted Average Contractual Life (years) Intrinsic Value Options Outstanding 3.42 $ 8 Options Exercisable 3.09 $ 0 The intrinsic value is based on the share price of $5.29 at September 30, 2016. The Company calculated the fair value of each option grant on the date of grant using the Black-Scholes option-pricing model using the following assumptions at September 30 th September 30, 2016 Dividend yield 3.8 % Risk-free interest rate 0.8 % Expected volatility 33 % Expected life (in years) 4.9 The fair value of each unvested option was estimated on the date of grant using the Black-Scholes option valuation model. The Black-Scholes option valuation model was developed for use in estimating the fair value of traded options, which have no vesting restrictions and are fully transferable. In addition, option valuation models require the input of highly subjective assumptions including the expected stock price volatility and expected option life. Because the Company’s employee stock options have characteristics significantly different from those of traded options, and because changes in the subjective input assumptions can materially affect the fair value estimate, the existing models may not necessarily provide a reliable single measure of the fair value of the employee stock options. The dividend yield rate was calculated by dividing the Company’s annual dividend by the closing price on the grant date. The risk-free interest rate was based on the U.S. Treasury yields with remaining term that approximates the expected life of the options granted. The Company calculates the volatility based on a five-year historical period of the Company’s stock price. The Company incorporates a forfeiture rate based on historical data in the expense calculation. The expected life used for options granted is based on historical data of employee exercise performance. The Company records expense based on the grading vesting method. As of September 30, 2016, the unrecognized compensation expense related to the unvested portion of the Company’s stock options was approximately $0.1 million, net of estimated forfeitures to be recognized through 2020 over a weighted average period of 1.0 year. Performance-based Equity Awards The Company issued performance share awards to executives in 2014 and 2015. The fair value of these performance share awards was calculated based on the stock price on the date of grant. In June 2015, the Company’s Board of Directors approved the 2015 Long-Term Incentive Plan (“2015 LTIP”). Under the 2015 LTIP, shares can be earned by certain executive employees based upon achievement of revenue goals over a four-year period with a penalty if certain earnings levels are not maintained. The four-year period was divided into two interim periods (each an “Interim Period”), the first of which will end on December 31, 2016, and the second of which will end on December 31, 2018. At the award date, the number of shares that could be earned collectively by all participants at threshold and target were 212,000 and 424,000, respectively. Stock compensation expense is amortized over the performance period for these awards based on estimated achievement of the goals. No expense has been recorded during the year ended December 31, 2015 or during the nine months ended September 30, 2016 for the 2015 LTIP because the Company does not believe it will meet the revenue threshold for the year ended December 31, 2016. In March 2014, the Company’s Board of Directors approved the 2014 Long-Term Incentive Plan (“2014 LTIP”). Under the 2014 LTIP, shares can be earned by certain executive employees based upon achievement of revenue goals over a four-year period with a penalty if certain profit levels are not maintained. The four-year period was divided into two interim periods (each an “Interim Period”), the first of which will end on December 31, 2015, and the second of which will end on December 31, 2017. The number of shares that could be earned collectively by all participants at threshold and target were 190,000 and 380,000, respectively. Stock compensation expense is amortized over the performance period for these awards based on estimated achievement of the goals. No expense was recorded for the first Interim Period of the 2014 LTIP because the Company did not meet the revenue threshold for the year ended 2015. Unvested awards of 162,000 related to the Interim Period ended December 31, 2015 were cancelled in December 2015. The Company had 455,000 and 555,000 unvested performance awards at September 30, 2016 and December 31, 2015, respectively. There were forfeitures of 100,000 awards during the nine months ended September 30, 2016 due to employee attrition. Director shares In June 2016, the Company issued 85,374 shares to directors that immediately vested. The intrinsic value of these shares was $0.4 million based on the share price of $4.65 on the award date. In June 2015, the Company issued 37,379 shares to directors that immediately vested. The intrinsic value of these shares was $0.3 million based on the share price of $7.41 on the award date. Short-term incentive plan For the Company’s 2016 STIP, executives will be paid in shares of the Company’s stock. Any shares earned under the STIP will be awarded in the first quarter of 2017 based on the performance period ending December 31, 2016. During the nine months ended September 30, 2016, the Company recorded the expense based on an estimate of the achievement of the award on a pro-rata basis over the measurement period. 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. The Company received proceeds of $0.3 million from the issuance of 67,533 shares under the ESPP in August 2016 and received proceeds of $0.4 million from the issuance of 76,314 shares under the ESPP in August 2015. The Company received proceeds of $0.4 million from the issuance of 78,415 shares under the ESPP in February 2016 and received proceeds of $0.4 million from the issuance of 57,293 shares under the ESPP in February 2015. Based on the 15% discount and the fair value of the option feature of this plan, this plan 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: September 30, 2016 2015 Dividend yield 3.8 % 3.4 % Risk-free interest rate 0.8 % 0.6 % Expected volatility 33 % 34 % 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 options granted. The dividend yield rate is calculated by dividing the Company’s annual dividend by the closing price on the grant date. The Company calculates the volatility based on a five-year historical period of the Company’s stock price. The expected life used is based on the offering period. Employee Withholding Taxes on Stock Awards For ease in administering the issuance of stock awards, the Company holds back shares of vested restricted stock awards and short-term incentive plan stock awards for the value of the statutory withholding taxes. For each individual receiving a share award, the Company redeems the shares it computes as the value for the withholding tax and remits this amount to the appropriate tax authority. For withholding taxes related to stock awards, the Company paid $0.4 million during the nine months ended September 30, 2016 and 2015, respectively. Stock Repurchases The Company repurchased 783,212 shares at an average price of $5.23 during the first quarter 2016. No shares were repurchased during the three months ended September 30, 2016. As of the first quarter 2016, the Company had no shares that could still be repurchased under previously approved programs. The Company repurchased 1,942,788 shares at an average price of $6.22 during the year ended December 31, 2015. In total, the Company repurchased 2,726,000 shares under share repurchase program during the past twelve months.

Benefit Plans

Benefit Plans	9 Months Ended
	Sep. 30, 2016
Compensation And Retirement Disclosure [Abstract]
Benefit Plans	9. Benefit Plans Employee Benefit Plans The Company’s 401(k) plan covers all of the 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% 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 were as follows: Three Months Ended Nine Months Ended September 30, September 30, 2016 2015 2016 2015 PCTEL, Inc. 401(k) Profit sharing Plan - US employees $ 168 $ 195 $ 509 $ 575 Defined contribution plans - foreign employees 89 87 285 248 Total $ 257 $ 282 $ 794 $ 823

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2016
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	10. Commitments and Contingencies Restructuring During the nine months ended September 30, 2016, the Company incurred restructuring expenses of $0.7 million consisting of $0.3 million in employee severance and payroll related costs, $0.3 million for lease terminations, and $0.1 million related to fixed asset disposals. During the first quarter 2016, the Company reduced headcount in its RF Solutions segment related to services and SeeHawk analytics, and exited from its Colorado office in order to consolidate facility space. The restructuring expense incurred for lease terminations include the remaining obligations under the lease, net of assumed proceeds for a sublease. As of September 30, 2016, the Colorado office has not been subleased. During the three months ended September 30, 2016, the Company increased its liability by $0.1 million for the Colorado lease termination based on a revised sublease assumption. Of the $0.3 million restructuring liability at September 30, 2016, $0.2 million was included in accrued liabilities and $0.1 million was included in long-term liabilities in the consolidated balance sheets. The restructuring liability of $0.2 million at December 31, 2015 was included in accrued liabilities in the consolidated balance sheets. The following table summarizes the restructuring activity during the nine months ended September 30, 2016 and the status of the reserves at September 30, 2016. December 31, 2015 Restructuring Expenses Cash Payments/ Adjustments September 30, 2016 Severance and related employee benefits $ 237 $ 254 $ (422 ) $ 69 Lease terminations 0 328 (119 ) 209 Fixed assets 0 72 (72 ) 0 Total $ 237 $ 654 $ (613 ) $ 278 Operating Leases The Company has operating leases for facilities through 2020 and office equipment through 2019. The future minimum rental payments under these leases at September 30, 2016, are as follows: Year Amount 2016 $ 245 2017 907 2018 887 2019 827 2020 308 Thereafter 28 Future minimum lease payments $ 3,202 The rent expense under leases was approximately $0.2 million and $0.3 million for the three months ended September 30, 2016, and 2015, respectively, and approximately $0.7 million and $0.8 million for the nine months ended September 30, 2016, and 2015, respectively. In February 2016, the Company modified the lease agreement for the office of its engineering services business in Melbourne, Florida. Under the lease amendment, the Company reduced the lease space from 6,174 sq. ft. to 3,600 sq. ft. The expiration lease term remained the same at December 31, 2018. There were no additional fees related to this lease amendment. To increase antenna manufacturing capacity at the Company’s Tianjin, China facility, in October 2015 the Company entered into a new five-year lease for additional manufacturing space in consisting of 22,169 square feet which expanded the Company’s footprint in Tianjin to 44,289 square feet. This lease expires October 2020. The total lease obligation pursuant to this lease was $0.2 million. In May 2015, the Company entered into a new five-year, five month lease for office space in Englewood, Colorado, consisting of 4,759 square feet of office space for the engineering services business. The lease expires on October 31, 2020; however, during the first quarter 2016, the Company vacated this facility and is marketing this property for sublease. Excluding any sublease payments, the remaining lease obligation pursuant to this lease was $0.5 million at September 30, 2016. Pursuant to the Asset Purchase Agreement dated February 27, 2015 with Nexgen, the Company assumed Nexgen’s lease for office space in Schaumburg, Illinois consisting of 6,652 square feet. The total lease obligation pursuant to this lease assumption was $0.3 million. The Schaumburg lease expires on October 31, 2018, but the lease contained a one-time option to elect an early termination of the lease on August 31, 2016. In March 2016, the Company exercised the early termination option and paid a fee of $57. The Company exited this office space in August 2016 and has no further interest or obligations in the office space. In June 2016, the Company entered into a new four-year lease for its Beijing Design Center, at the same location, consisting of 5,393 square feet. The total lease obligation pursuant to this lease agreement was $0.4 million. Capital Leases The Company has capital leases for office and manufacturing equipment. The net book values for assets under capital leases were as follows: September 30, 2016 December 31, 2015 Cost $ 324 $ 190 Accumulated Depreciation (88 ) (48 ) Net Book Value $ 236 $ 142 The following table presents future minimum lease payments under capital leases together with the present value of the net minimum lease payments due in each year: Year Amount 2016 $ 19 2017 77 2018 76 2019 60 2020 20 2021 8 Total minimum payments required: 260 Less amount representing interest: 18 Present value of net minimum lease payments: $ 242 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 Company’s allowance for product returns was $0.1 million and $0.2 million at September 30, 2016 and December 31, 2015, respectively, and is included within accounts receivable on the accompanying condensed consolidated balance sheet. The Company offers repair and replacement warranties of up to five years for certain antenna products and scanning receiver 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, 2016 and December 31, 2015, respectively, and is included in other accrued liabilities in the accompanying condensed consolidated balance sheets. Nine Months Ended September 30, 2016 2015 Beginning balance $ 348 $ 304 Provisions for warranties 57 93 Consumption of reserves (86 ) (16 ) Ending balance $ 319 $ 381

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	11. Income Taxes The Company recorded an income tax benefit of $0.3 million for the three months ended September 30, 2016 and income tax expense of $4.2 million for the nine months ended September 30, 2016. The tax expense for the nine months ended September 30, 2016 includes $7.6 million for an increase to the valuation allowance for the Company’s U.S. deferred tax assets. Excluding the adjustment to the valuation allowance, the benefit recorded for the nine months ended September 30, 2016 differed from the statutory rate of 34% due to the combination of U.S. pretax losses and foreign pretax profits at lower tax rates and due to state taxes. The Company recorded an income tax benefit of $0.6 million and $0.5 million for the three and nine months ended September 30, 2015, respectively. The tax benefit for the nine months ended September 30, 2015 differed from the statutory rate of 34% primarily because of state income taxes. At September 30, 2016, the Company has deferred tax assets net of deferred tax liabilities of $17.6 million, virtually all of which are related to the United States tax jurisdiction. The Company’s valuation allowance against its deferred tax assets was $8.3 million at September 30, 2016 and $0.7 million at December 31, 2015. On a regular basis, the Company evaluates the recoverability of deferred tax assets and the need for a valuation allowance. Such evaluations involve the application of significant judgment. The Company considers multiple factors in its evaluation of the need for a valuation allowance. The Company’s domestic deferred tax assets have a ratable reversal pattern over 15 years. The carry forward rules allow for up to a 20 year carry forward of net operating losses (“NOL”) to future income that is available to realize the deferred tax assets. The combination of the deferred tax asset reversal pattern and carry forward period yields a 27.5 year average period over which future income can be utilized to realize the deferred tax assets. During the quarter ended June 30, 2016, there were two significant changes in the deferred tax asset recoverability evidence pattern. The cumulative three year US book income turned to a loss. In addition, the Company experienced a significant shift in its Connected Solutions segment revenue to products that are designed, manufactured and sold through the Company’s China subsidiary directly into China. This will cause a significant shift going forward in the Company’s tax profitability from the United States to China. The Company believes this is the beginning of a long-term trend. In the third quarter, the Company completed a recapitalization of its China subsidiary to accommodate the initial working capital growth required to support the shift and continues to anticipate permanently reinvesting future earnings and profits from its China subsidiary in China to support its future working capital needs there. The Company re-forecasted its long term domestic profitability in light of the shift in business to China that is occurring. 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. The Company used a series of projections bound on the low side by what it would take for none of its deferred tax assets to be realized and on the high side by what it would take for all of the deferred tax assets to be realized. The Company assigned probabilities to each scenario and the result was a weighted average valuation allowance of $7.6 million established at June 30, 2016. 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’s gross unrecognized tax benefit was $0.8 million at September 30, 2016 and December 31, 2015. 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 and state tax returns remain subject to examination for 2012 and subsequent periods.

Segment, Customer and Geographi

Segment, Customer and Geographic Information	9 Months Ended
	Sep. 30, 2016
Segment Reporting [Abstract]
Segment, Customer and Geographic Information	12. Segment, Customer and Geographic Information PCTEL operates in two segments for reporting purposes. The Company’s Connected Solutions segment includes its antenna and engineered site solutions. Its RF Solutions segment includes its scanning receivers and engineering services. Each of the segments has its own segment manager as well as its own engineering, sales and marketing, and operational general and administrative functions. All of the Company’s accounting and finance, human resources, IT and legal functions are provided on a centralized basis through the corporate function. The Company manages its balance sheet and cash flows centrally at the corporate level, with the exception of inventory which is managed at the segment level. Each of the segment managers reports to and maintains regular contact with the chief operating decision maker to discuss operating activities, financial results, forecasts, or plans for the segment. The Company’s chief operating decision maker uses operating profits and identified assets for Connected Solutions and RF Solutions segments to make operating decisions. The following tables are the segment operating profits and cash flow information for the three and nine months ended September 30, 2016 and 2015, respectively, and the segment balance sheet information as of September 30, 2016 and December 31, 2015: Three Months Ended September 30, 2016 Connected Solutions RF Solutions Corporate Total REVENUES $ 17,136 $ 7,609 $ (58 ) $ 24,687 GROSS PROFIT 5,771 3,179 (13 ) 8,937 OPERATING INCOME (LOSS) $ 2,530 $ (330 ) $ (2,363 ) $ (163 ) Depreciation $ 484 $ 330 $ 0 $ 814 Intangible amortization $ 39 $ 378 $ 0 $ 417 Capital expenditures $ 288 $ 41 $ 5 $ 334 Nine Months Ended September 30, 2016 Connected Solutions RF Solutions Corporate Total REVENUES $ 47,616 $ 22,552 $ (164 ) $ 70,004 GROSS PROFIT $ 15,035 $ 10,197 $ (7 ) $ 25,225 OPERATING INCOME (LOSS) $ 5,625 $ (6,227 ) $ (7,644 ) $ (8,246 ) Depreciation $ 1,417 $ 988 $ 0 $ 2,405 Intangible amortization $ 153 $ 1,777 $ 0 $ 1,930 Capital expenditures $ 1,127 $ 239 $ 333 $ 1,699 As of September 30, 2016 Connected Solutions RF Solutions Corporate Total Accounts receivable $ 11,801 $ 6,196 $ 0 $ 17,997 Inventories $ 12,371 $ 2,334 $ 0 $ 14,705 Long-lived assets: Property and equipment, net $ 10,028 $ 2,312 $ 783 $ 13,123 Goodwill $ 0 $ 3,332 $ 0 $ 3,332 Intangible assets, net $ 272 $ 4,452 $ 0 $ 4,724 Deferred tax assets, net $ 0 $ 0 $ 9,264 $ 9,264 Other noncurrent assets $ 0 $ 0 $ 38 $ 38 Three Months Ended September 30, 2015 Connected Solutions RF Solutions Corporate Total REVENUES $ 17,450 $ 9,115 $ (39 ) $ 26,526 GROSS PROFIT $ 4,729 $ 3,727 $ 7 $ 8,463 OPERATING INCOME (LOSS) $ 1,160 $ (1,058 ) $ (2,323 ) $ (2,221 ) Depreciation $ 428 $ 289 $ 64 $ 781 Intangible amortization $ 195 $ 930 $ 0 $ 1,125 Capital expenditures $ 135 $ 151 $ 0 $ 286 Nine Months Ended September 30, 2015 Connected Solutions RF Solutions Corporate Total REVENUES $ 52,903 $ 27,749 $ (175 ) $ 80,477 GROSS PROFIT $ 15,549 $ 12,413 $ 20 $ 27,982 OPERATING INCOME (LOSS) $ 4,255 $ (181 ) $ (8,056 ) $ (3,982 ) Depreciation $ 1,281 $ 809 $ 208 $ 2,298 Intangible amortization $ 655 $ 2,308 $ 0 $ 2,963 Capital expenditures $ 653 $ 836 $ 94 $ 1,583 As of December 31, 2015 Connected Solutions RF Solutions Corporate Total Accounts receivable $ 12,875 $ 8,126 $ 0 $ 21,001 Inventories $ 15,507 $ 2,089 $ 0 $ 17,596 Long-lived assets: Property and equipment, net $ 10,250 $ 2,985 $ 604 $ 13,839 Goodwill $ 0 $ 3,332 $ 0 $ 3,332 Intangible assets, net $ 425 $ 10,953 $ 0 $ 11,378 Deferred tax assets, net $ 0 $ 0 $ 13,155 $ 13,155 Other noncurrent assets $ 0 $ 0 $ 40 $ 40 The Company’s revenues attributable to products and services are as follows: Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Revenues: Products $ 20,892 $ 22,393 $ 61,383 $ 68,583 Services 3,795 4,133 8,621 11,894 Total revenues $ 24,687 $ 26,526 $ 70,004 $ 80,477 Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Cost of revenues: Products $ 12,637 $ 14,214 $ 36,735 $ 41,742 Services 3,113 3,849 8,044 10,753 Total cost of revenues $ 15,750 $ 18,063 $ 44,779 $ 52,495 The Company’s revenue to customers by geographic location, as a percent of total revenues, is as follows: Three Months Ended Nine Months Ended September 30, September 30, Region 2016 2015 2016 2015 Asia Pacific 21 % 9 % 19 % 9 % Europe, Middle East, & Africa 7 % 7 % 8 % 9 % Other Americas 6 % 7 % 6 % 6 % Total Foreign sales 34 % 23 % 33 % 24 % There was

Related Parties

Related Parties	9 Months Ended
	Sep. 30, 2016
Related Party Transactions [Abstract]
Related Parties	13. Related Parties The Company leased its Pryor, Oklahoma facility from American Tradition Custom Steel LLC, of which Aaron Jarvis is a member. Mr. Jarvis was the operations manager for the Company’s mobile tower business. Mr. Jarvis’ employment with the Company ended in September 2015, and the lease terminated on October 31, 2015. Effective October 2015, the Company entered into a contract with Mr. Jarvis pursuant to which he provided warranty support for the mobile towers product line. The warranty support was complete as of September 30, 2016.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2016
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. There were no other subsequent events or transactions that required recognition or disclosure in the consolidated financial statements.

Basis of Presentation (Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2016
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Nature of Operations	Nature of Operations PCTEL, Inc. (“PCTEL”, the “Company”, “we”, “ours”, and “us”) delivers P C T
Segment Reporting	Segment Reporting PCTEL operates in two segments for reporting purposes, Connected Solutions and RF Solutions. The Company’s chief operating decision maker uses operating profits and identified assets for the Connected Solutions and RF Solutions segments to make operating decisions. Each segment has its own segment manager as well as its own engineering, sales and marketing, and operational general and administrative functions. All of the Company’s accounting and finance, human resources, IT and legal functions are provided on a centralized basis through the corporate function. The Company manages its balance sheet and cash flows centrally at the corporate level, with the exception of trade accounts receivable and inventory which is managed at the segment level. Each of the segment managers reports to and maintains regular contact with the chief operating decision maker to discuss operating activities, financial results, forecasts, or plans for the segment. Connected Solutions Segment Connected Solutions designs and delivers performance critical antennas and site solutions for wireless networks globally. The Company’s antennas and site solutions support networks worldwide, including SCADA for oil, gas and utilities, fleet management, industrial operations, health care, small cell and network timing deployment, defense, public safety, education, and broadband access. PCTEL's performance critical antenna solutions include high rejection and high performance GPS and GNSS products, the industry leading Yagi portfolio, mobile and indoor LTE, broadband, and LMR antennas and PIM-rated antennas for transit, in-building, and small cell applications. The Company leverages its design, logistics, and support capabilities to deliver performance critical site solutions into carrier, railroad, and utility applications. Revenue growth for antenna and site solutions is primarily driven by the increased use of wireless communications in these vertical markets. PCTEL’s antenna and site solution products are primarily sold through distributors, value-added resellers, and original equipment manufacturer (“OEM”) providers. There are many competitors for antenna products, as the market is highly fragmented. Competitors include Laird (Cushcraft, Centurion, and Antennex products), Mobile Mark, Radiall/Larsen, Comtelco, Wilson, Commscope (Andrew products), and Kathrein, among others. The Company seeks out product applications that command a premium for product performance and customer service, and avoids commodity markets. PCTEL maintains expertise in several technology areas in order to be competitive in the antenna engineered site solutions market. These include radio frequency engineering, mobile antenna design and manufacturing, mechanical engineering, product quality and testing, and wireless network engineering. RF Solutions Segment RF Solutions develops and provides performance critical test equipment, software, and engineering services for wireless networks. The industry relies upon PCTEL to benchmark network performance, analyze trends, and optimize wireless networks. SeeGull ® On February 27, 2015, PCTEL acquired substantially all of the assets of, and assumed certain specified liabilities of, Nexgen Wireless, Inc. (“Nexgen”), pursuant to an Asset Purchase Agreement dated as of February 27, 2015. From the acquired business, the Company provides a network analysis tool portfolio now known as SeeHawk ® PCTEL maintains expertise in several technology areas in order to be competitive in the scanning receiver and related engineering services market. These include radio frequency engineering, DSP engineering, manufacturing, mechanical engineering, product quality and testing, and wireless network engineering.
Basis of Consolidation	Basis of Consolidation The condensed consolidated balance sheet as of September 30, 2016 and the condensed consolidated statements of operations, statements of comprehensive loss, and cash flows for the nine months ended September 30, 2016 and 2015, respectively, 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 interim condensed consolidated financial statements are derived from the audited financial statements as of December 31, 2015. Certain prior year amounts have been reclassified for consistency with the current period presentation. The statements of operations for the three and nine months ended September 30, 2015 include reclassifications between cost of revenues and operating expenses for intangible amortization. The Company reclassified $0.2 million and $0.4 million from operating expense to cost of revenues for the three and nine months ended September 30, 2015, respectively. These reclassifications did not affect the operating loss or net income for the three and nine months ended September 30, 2015. 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 accounting principles generally accepted in the U.S. have been condensed or omitted. The significant accounting policies followed by the Company are set forth within the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 (“the 2015 Form 10-K”). There were no changes in the Company’s significant accounting policies during the nine months ended September 30, 2016. In addition, the Company reaffirms the use of estimates in the preparation of the financial statements as set forth in the 2015 Form 10-K. These interim condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and notes thereto included in the 2015 Form 10-K. The results of operations for the period ended September 30, 2016 may not be indicative of the results for the period ending December 31, 2016.
Foreign Operations	Foreign Operations The Company is exposed to foreign currency fluctuations due to its foreign operations and because products are sold internationally. The functional currency for the Company’s foreign operations is predominantly the applicable local currency. Accounts of foreign operations are translated into U.S. dollars using the exchange rate in effect at the applicable balance sheet date for assets and liabilities and average monthly rates prevailing during the period for revenue and expense accounts. Adjustments resulting from translation are included in accumulated other comprehensive income (loss), a separate component of shareholders’ equity. Gains and losses resulting from other transactions originally in foreign currencies and then translated into U.S. dollars are included in the condensed consolidated statement of operations. Net foreign exchange gains resulting from foreign currency transactions included in other income, net were $11 and $5 for the three months ended September 30, 2016 and 2015, respectively. Net foreign exchange losses resulting from foreign currency transactions included in other income, net were ($24) and ($23) for the nine months ended September 30, 2016 and 2015, respectively.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In August 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2016-15 , In March 2016, the FASB issued ASU No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. ASU No. 2016-09 affects all entities that issue share-based payment awards to their employees. ASU No. 2016-09 simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows, including recognizing all excess tax benefits and tax deficiencies as income tax expense or benefit in the income statement rather than in additional paid-in capital. ASU No. 2016-09 is effective for financial statements issued for annual reporting periods beginning after December 15, 2016 and interim periods within those years. Earlier application is permitted. The Company is currently evaluating the impact the standard may have on its consolidated financial statements and related disclosures. In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842),” which requires lessees to recognize assets and liabilities for the rights and obligations created by most leases on their balance sheet. The guidance is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application is permitted. ASU 2016-02 requires modified retrospective adoption for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. The Company is currently evaluating the impact the standard may have on its consolidated financial statements and related disclosures. In November 2015, the FASB issued ASU 2015-17, Balance Sheet Classification of Deferred Taxes, to simplify the presentation of deferred income taxes. The amendments in this update require that deferred tax assets and liabilities be entirely classified as noncurrent within the statement of financial position. Effective December 31, 2015, the Company early adopted the balance sheet classification of deferred taxes on a prospective basis. The guidance requires deferred tax assets and liabilities to be classified as noncurrent rather than split between current and noncurrent. Approximately $1.8 million in current deferred tax assets was reclassified to long-term deferred tax assets at December 31, 2015. In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers” which introduces a new revenue recognition model in which an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 defines a five step process to achieve this core principle and, in doing so, more judgment and estimates may be required within the revenue recognition process than are required under existing U.S. GAAP. This ASU also requires disclosures sufficient to enable users to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers, including qualitative and quantitative disclosures about contracts with customers, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. The FASB has voted to approve a one-year deferral of the effective date from January 1, 2017 to January 1, 2018, while allowing for early adoption as of January 1, 2017. The new accounting standard is expected to have an impact to the Company’s consolidated financial statements. The Company is currently evaluating the adoption method options and the impact of the new guidance on our consolidated financial statements.

Earnings per Share (Tables)

Earnings per Share (Tables)	9 Months Ended
	Sep. 30, 2016
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Share	The following table is the computation of basic and diluted earnings per share: Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Basic Earnings Per Share computation: Numerator: Net (loss) income $ 175 $ (1,062 ) $ (12,354 ) $ (748 ) Denominator: Common shares outstanding 16,106 17,626 16,136 18,059 Earnings per common share - basic Net (loss) income $ 0.01 $ (0.06 ) $ (0.77 ) $ (0.04 ) Diluted Earnings Per Share computation: Denominator: Common shares outstanding 16,106 17,626 16,136 18,059 Restricted shares subject to vesting 139 * * * Common stock option grants 0 * * * Total shares 16,245 17,626 16,136 18,059 Earnings per common share - diluted Net (loss) income $ 0.01 $ (0.06 ) $ (0.77 ) $ (0.04 ) * As denoted by “*” in the table above, the weighted average common stock option grants and restricted shares of 140,000 for the nine months ended September 30, 2016 and 183,000 and 369,000 for the three and nine months ended September 30, 2015, respectively, were excluded from the calculations of diluted net loss per share since their effects are anti-dilutive.

Cash, Cash Equivalents and In24

Cash, Cash Equivalents and Investments (Tables)	9 Months Ended
	Sep. 30, 2016
Cash And Cash Equivalents [Abstract]
Cash and Cash Equivalents and Investments	The Company’s cash and investments consisted of the following: September 30, December 31, 2016 2015 Cash $ 5,426 $ 6,077 Cash equivalents 7,679 978 Short-term investments 18,099 24,728 $ 31,204 $ 31,783
Cash Equivalents and Investments Measured at Fair Value	Cash equivalents and Level 1 and Level 2 investments measured at fair value were as follows at September 30, 2016 and December 31, 2015: September 30, 2016 December 31, 2015 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Cash equivalents: Money market funds and other cash equivalents $ 7,677 $ 0 $ 0 $ 7,677 $ 978 $ 0 $ 0 $ 978 Investments: Pre-refunded municipal bonds 0 5,783 0 5,783 0 7,497 0 7,497 Corporate bonds 0 4,686 0 4,686 0 7,558 0 7,558 US government agency bonds 0 3,500 0 3,500 0 7,008 0 7,008 Certificates of deposit 4,124 0 0 4,124 2,666 0 0 2,666 Total $ 11,801 $ 13,969 $ 0 $ 25,770 $ 3,644 $ 22,063 $ 0 $ 25,707

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Other Intangible Assets	The summary of other intangible assets, net is as follows: September 30, 2016 December 31, 2015 Accumulated Net Book Accumulated Net Book Cost Amortization Value Cost Amortization Value Customer contracts and relationships $ 25,497 $ 24,344 $ 1,153 $ 25,497 $ 18,616 $ 6,881 Patents and technology 10,114 7,837 2,277 10,114 7,337 2,777 Trademarks and trade names 4,960 4,022 938 4,960 3,738 1,222 Other 2,743 2,387 356 2,743 2,245 498 $ 43,314 $ 38,590 $ 4,724 $ 43,314 $ 31,936 $ 11,378
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 is summarized below: Intangible Assets Assigned Life Weighted Average Amortization Period Customer contracts and relationships 4 to 6 years 5.0 Patents and technology 3 to 6 years 5.1 Trademarks and trade names 3 to 8 years 5.5 Other 1 to 6 years 3.4
Schedule of Expected Amortization Expense	The Company’s scheduled amortization expense for 2016 and the next four years is as follows: Fiscal Year Amount 2016 $ 2,318 2017 $ 1,497 2018 $ 1,419 2019 $ 1,221 2020 $ 199

Balance Sheet Information (Tabl

Balance Sheet Information (Tables)	9 Months Ended
	Sep. 30, 2016
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Summary of Inventories	Inventories consisted of the following: September 30, December 31, 2016 2015 Raw materials $ 8,903 $ 11,012 Work in process 1,097 917 Finished goods 4,705 5,667 Inventories, net $ 14,705 $ 17,596
Summary of Property and Equipment	Property and equipment consisted of the following: September 30, December 31, 2016 2015 Building $ 6,341 $ 6,227 Computers and office equipment 11,645 10,931 Manufacturing and test equipment 13,041 12,826 Furniture and fixtures 1,240 1,273 Leasehold improvements 1,228 1,001 Motor vehicles 19 42 Total property and equipment 33,514 32,300 Less: Accumulated depreciation and amortization (22,161 ) (20,231 ) Land 1,770 1,770 Property and equipment, net $ 13,123 $ 13,839
Summary of Accrued Liabilities	Accrued liabilities consisted of the following: September 30, December 31, 2016 2015 Inventory receipts $ 1,379 $ 1,628 Payroll, bonuses, and other employee benefits 1,293 1,179 Paid time off 1,199 1,271 Income and sales taxes 443 381 Warranties 319 348 Restructuring 186 237 Professional fees and contractors 167 305 Employee stock purchase plan 120 280 Real estate taxes 114 161 Deferred revenues 76 65 Other 246 335 Total $ 5,542 $ 6,190
Summary of Long-term Liabilities	Long-term liabilities consist of the following: September 30, December 31, 2016 2015 Long-term obligations under capital leases $ 174 $ 107 Deferred rent 171 250 Restructuring 93 0 Deferred revenues 9 31 Total $ 447 $ 388

Acquisitions (Tables)

Acquisitions (Tables) - Nexgen Wireless, Inc. [Member]	9 Months Ended
	Sep. 30, 2016
Provisional Allocation of Purchase Price for Assets from Date of Acquisition	The following is the allocation of the purchase price for the assets from Nexgen at the date of the acquisition as of December 31, 2015: Tangible assets: Accounts receivable $ 5,358 Prepaid and other assets 49 Deferred cost of sales 24 Fixed assets 43 Total tangible assets 5,474 Intangible assets: Customer relationships 8,117 Trade names 972 Technology 3,332 Backlog 162 Non-compete 583 Goodwill 3,332 Total intangible assets 16,498 Total assets 21,972 Accounts payable 200 Accrued liabilities 341 Total liabilities 541 Net assets acquired $ 21,431
Reconciliation of Assets Acquired with Cash Paid at Closing	A reconciliation of the assets acquired with the cash paid at closing is as follows: Net assets acquired $ 21,431 Due Nexgen - contingent liability (91 ) Due Nexgen - working capital adjustment (840 ) Cash paid at closing $ 20,500
Pro Forma Financial Information for Nexgen	The pro forma financial information for Nexgen was derived from the historical accounting records of Nexgen. (unaudited) Nine September 30, 2015 REVENUES $ 83,435 NET INCOME $ (719 ) Net Income per Share $ (0.04 )

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2016
Stock-Based Compensation	The Company did not capitalize any stock compensation expense during the three and nine months ended September 30, 2016 or 2015. Total stock-based compensation is reflected in the condensed consolidated statements of operations as follows: Three Months Ended Nine Months Ended September 30 September 30 2016 2015 2016 2015 Cost of revenues $ 61 $ 115 $ 325 $ 244 Research and development 183 99 525 244 Sales and marketing 158 230 486 370 General and administrative 542 206 1,851 534 Total $ 944 $ 650 $ 3,187 $ 1,392
Summary of Stock Option Activity	A summary of the Company’s stock option activity for the nine months ended September 30, 2016 is as follows: Weighted Average Options Exercise Outstanding Price Outstanding at December 31, 2015 1,220,442 $ 7.72 Granted 24,500 4.95 Expired or Cancelled (294,229 ) 8.84 Forfeited (63,471 ) 7.24 Outstanding at September 30, 2016 887,242 $ 7.31 Exercisable at September 30, 2016 662,089 $ 7.39
Information about Stock Options Outstanding Under all Stock Plans	The following table summarizes information about stock options outstanding under all stock option plans: Options Outstanding Options Exercisable Weighted Average Weighted- Weighted Range of Number Contractual Life Average Number Average Exercise Prices Outstanding (Years) Exercise Price Exercisable Exercise Price $ 4.50 -- $ 6.00 36,379 6.46 $ 5.28 1,755 $ 5.90 6.01 -- 6.50 16,267 2.54 6.23 16,267 6.23 6.51 -- 7.00 37,522 1.65 6.85 36,251 6.86 7.01 -- 7.50 641,360 3.43 7.17 499,454 7.17 7.51 -- 8.00 18,000 4.04 7.80 12,352 7.81 8.01 -- 8.50 75,232 4.73 8.12 35,415 8.14 8.51 -- 9.00 6,750 2.83 8.76 5,301 8.77 9.01 -- 9.50 38,832 0.38 9.29 38,832 9.29 9.51 -- 10.00 15,500 1.97 9.63 15,062 9.63 10.01 -- 11.00 1,400 1.84 10.46 1,400 10.46 $ 4.50 -- $ 11.00 887,242 3.42 $ 7.31 662,089 $ 7.39
Weighted Average Contractual Life and Intrinsic Value of the Options Outstanding	The weighted average contractual life and intrinsic value at September 30, 2016, was the following: Weighted Average Contractual Life (years) Intrinsic Value Options Outstanding 3.42 $ 8 Options Exercisable 3.09 $ 0
Fair Value of Date of Grant Using Black-Scholes Option-Pricing Model	The Company calculated the fair value of each option grant on the date of grant using the Black-Scholes option-pricing model using the following assumptions at September 30 th September 30, 2016 Dividend yield 3.8 % Risk-free interest rate 0.8 % Expected volatility 33 % Expected life (in years) 4.9
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: September 30, 2016 2015 Dividend yield 3.8 % 3.4 % Risk-free interest rate 0.8 % 0.6 % Expected volatility 33 % 34 % Expected life (in years) 0.5 0.5
Restricted Stock [Member]
Summary of Service-based Restricted Stock Activity	The following table summarizes service-based restricted stock activity for the nine months ended September 30, 2016: Weighted Average Grant Date Shares Fair Value Unvested Restricted Stock Awards - December 31, 2015 1,050,172 $ 6.11 Shares awarded 452,300 5.61 Shares vested (204,398 ) 6.61 Shares cancelled (134,726 ) 6.17 Unvested Restricted Stock Awards - September 30, 2016 1,163,348 $ 5.83
Restricted Stock Units [Member]
Summary of Service-based Restricted Stock Activity	The following table summarizes the restricted stock unit activity during the nine months ended September 30, 2016: Weighted Average Grant Date Units Fair Value Unvested Restricted Stock Units - December 31, 2015 22,725 $ 5.65 Units awarded 15,000 5.61 Units vested (1,337 ) 7.25 Unvested Restricted Stock Units - September 30, 2016 36,388 $ 5.57

Benefit Plans (Tables)

Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2016
Compensation And Retirement Disclosure [Abstract]
Summary of Contributions to Retirement Plans	The Company’s contributions to retirement plans were as follows: Three Months Ended Nine Months Ended September 30, September 30, 2016 2015 2016 2015 PCTEL, Inc. 401(k) Profit sharing Plan - US employees $ 168 $ 195 $ 509 $ 575 Defined contribution plans - foreign employees 89 87 285 248 Total $ 257 $ 282 $ 794 $ 823

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2016
Commitments And Contingencies Disclosure [Abstract]
Summary of Restructuring Activity	The following table summarizes the restructuring activity during the nine months ended September 30, 2016 and the status of the reserves at September 30, 2016. December 31, 2015 Restructuring Expenses Cash Payments/ Adjustments September 30, 2016 Severance and related employee benefits $ 237 $ 254 $ (422 ) $ 69 Lease terminations 0 328 (119 ) 209 Fixed assets 0 72 (72 ) 0 Total $ 237 $ 654 $ (613 ) $ 278
Future Minimum Rental Payments Under Operating Leases	The future minimum rental payments under these leases at September 30, 2016, are as follows: Year Amount 2016 $ 245 2017 907 2018 887 2019 827 2020 308 Thereafter 28 Future minimum lease payments $ 3,202
Summary of Capital Leases for Office and Manufacturing Equipment	The Company has capital leases for office and manufacturing equipment. The net book values for assets under capital leases were as follows: September 30, 2016 December 31, 2015 Cost $ 324 $ 190 Accumulated Depreciation (88 ) (48 ) Net Book Value $ 236 $ 142
Present Value of Net Minimum Lease Payments, Capital Leases	The following table presents future minimum lease payments under capital leases together with the present value of the net minimum lease payments due in each year: Year Amount 2016 $ 19 2017 77 2018 76 2019 60 2020 20 2021 8 Total minimum payments required: 260 Less amount representing interest: 18 Present value of net minimum lease payments: $ 242
Changes in Warranty Reserves	Nine Months Ended September 30, 2016 2015 Beginning balance $ 348 $ 304 Provisions for warranties 57 93 Consumption of reserves (86 ) (16 ) Ending balance $ 319 $ 381

Segment, Customer and Geograp31

Segment, Customer and Geographic Information (Tables)	9 Months Ended
	Sep. 30, 2016
Segment Reporting [Abstract]
Result of Operations by Segments	The following tables are the segment operating profits and cash flow information for the three and nine months ended September 30, 2016 and 2015, respectively, and the segment balance sheet information as of September 30, 2016 and December 31, 2015: Three Months Ended September 30, 2016 Connected Solutions RF Solutions Corporate Total REVENUES $ 17,136 $ 7,609 $ (58 ) $ 24,687 GROSS PROFIT 5,771 3,179 (13 ) 8,937 OPERATING INCOME (LOSS) $ 2,530 $ (330 ) $ (2,363 ) $ (163 ) Depreciation $ 484 $ 330 $ 0 $ 814 Intangible amortization $ 39 $ 378 $ 0 $ 417 Capital expenditures $ 288 $ 41 $ 5 $ 334 Nine Months Ended September 30, 2016 Connected Solutions RF Solutions Corporate Total REVENUES $ 47,616 $ 22,552 $ (164 ) $ 70,004 GROSS PROFIT $ 15,035 $ 10,197 $ (7 ) $ 25,225 OPERATING INCOME (LOSS) $ 5,625 $ (6,227 ) $ (7,644 ) $ (8,246 ) Depreciation $ 1,417 $ 988 $ 0 $ 2,405 Intangible amortization $ 153 $ 1,777 $ 0 $ 1,930 Capital expenditures $ 1,127 $ 239 $ 333 $ 1,699 Three Months Ended September 30, 2015 Connected Solutions RF Solutions Corporate Total REVENUES $ 17,450 $ 9,115 $ (39 ) $ 26,526 GROSS PROFIT $ 4,729 $ 3,727 $ 7 $ 8,463 OPERATING INCOME (LOSS) $ 1,160 $ (1,058 ) $ (2,323 ) $ (2,221 ) Depreciation $ 428 $ 289 $ 64 $ 781 Intangible amortization $ 195 $ 930 $ 0 $ 1,125 Capital expenditures $ 135 $ 151 $ 0 $ 286 Nine Months Ended September 30, 2015 Connected Solutions RF Solutions Corporate Total REVENUES $ 52,903 $ 27,749 $ (175 ) $ 80,477 GROSS PROFIT $ 15,549 $ 12,413 $ 20 $ 27,982 OPERATING INCOME (LOSS) $ 4,255 $ (181 ) $ (8,056 ) $ (3,982 ) Depreciation $ 1,281 $ 809 $ 208 $ 2,298 Intangible amortization $ 655 $ 2,308 $ 0 $ 2,963 Capital expenditures $ 653 $ 836 $ 94 $ 1,583
Assets by Segment	The following tables are the segment operating profits and cash flow information for the three and nine months ended September 30, 2016 and 2015, respectively, and the segment balance sheet information as of September 30, 2016 and December 31, 2015: As of September 30, 2016 Connected Solutions RF Solutions Corporate Total Accounts receivable $ 11,801 $ 6,196 $ 0 $ 17,997 Inventories $ 12,371 $ 2,334 $ 0 $ 14,705 Long-lived assets: Property and equipment, net $ 10,028 $ 2,312 $ 783 $ 13,123 Goodwill $ 0 $ 3,332 $ 0 $ 3,332 Intangible assets, net $ 272 $ 4,452 $ 0 $ 4,724 Deferred tax assets, net $ 0 $ 0 $ 9,264 $ 9,264 Other noncurrent assets $ 0 $ 0 $ 38 $ 38 As of December 31, 2015 Connected Solutions RF Solutions Corporate Total Accounts receivable $ 12,875 $ 8,126 $ 0 $ 21,001 Inventories $ 15,507 $ 2,089 $ 0 $ 17,596 Long-lived assets: Property and equipment, net $ 10,250 $ 2,985 $ 604 $ 13,839 Goodwill $ 0 $ 3,332 $ 0 $ 3,332 Intangible assets, net $ 425 $ 10,953 $ 0 $ 11,378 Deferred tax assets, net $ 0 $ 0 $ 13,155 $ 13,155 Other noncurrent assets $ 0 $ 0 $ 40 $ 40
Revenues Attributable to Products and Services	The Company’s revenues attributable to products and services are as follows: Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Revenues: Products $ 20,892 $ 22,393 $ 61,383 $ 68,583 Services 3,795 4,133 8,621 11,894 Total revenues $ 24,687 $ 26,526 $ 70,004 $ 80,477 Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Cost of revenues: Products $ 12,637 $ 14,214 $ 36,735 $ 41,742 Services 3,113 3,849 8,044 10,753 Total cost of revenues $ 15,750 $ 18,063 $ 44,779 $ 52,495
Customer Accounted Revenues by Geographic Location	The Company’s revenue to customers by geographic location, as a percent of total revenues, is as follows: Three Months Ended Nine Months Ended September 30, September 30, Region 2016 2015 2016 2015 Asia Pacific 21 % 9 % 19 % 9 % Europe, Middle East, & Africa 7 % 7 % 8 % 9 % Other Americas 6 % 7 % 6 % 6 % Total Foreign sales 34 % 23 % 33 % 24 %

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016USD ($)	Sep. 30, 2015USD ($)	Sep. 30, 2016USD ($)Segment	Sep. 30, 2015USD ($)	Dec. 31, 2015USD ($)
Nature Of Operations [Line Items]
Number of operating segments | Segment			2
Reclassification from operating expense to cost of revenues		$ 200		$ 400
Net foreign exchange gains (losses) resulting from foreign currency transactions included in other income	$ 11	$ 5	$ (24)	$ (23)
ASU 2015-17 [Member]
Nature Of Operations [Line Items]
Current deferred tax assets reclassified to long-term deferred tax assets					$ 1,800

Earnings per Share - Computatio

Earnings per Share - Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Numerator:
NET INCOME (LOSS)	$ 175	$ (1,062)	$ (12,354)	$ (748)
Denominator:
Common shares outstanding	16,106	17,626	16,136	18,059
Earnings per common share - basic
Net (loss) income	$ 0.01	$ (0.06)	$ (0.77)	$ (0.04)
Denominator:
Common shares outstanding	16,106	17,626	16,136	18,059
Common stock option grants	0
Total shares	16,245	17,626	16,136	18,059
Earnings per common share - diluted
Net (loss) income	$ 0.01	$ (0.06)	$ (0.77)	$ (0.04)
Restricted Stock [Member]
Denominator:
Shares subject to vesting	139

Earnings per Share - Computat34

Earnings per Share - Computation of Basic and Diluted Earnings Per Share (Parenthetical) (Detail) - shares shares in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share [Abstract]
Antidilutive shares excluded	183,000	140,000	369,000

Cash, Cash Equivalents and In35

Cash, Cash Equivalents and Investments - Cash and Cash Equivalents and Investments (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Cash And Cash Equivalents [Abstract]
Cash	$ 5,426	$ 6,077
Cash equivalents	7,679	978
Short-term investments	18,099	24,728
Cash and investments	$ 31,204	$ 31,783

Cash, Cash Equivalents and In36

Cash, Cash Equivalents and Investments - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents maturities			90 days
Investment of cash equivalents are redeemable upon demand using amortized cost method			$ 1
Investment in money market funds restricted by investment in short term securities, percentage	100.00%		100.00%
Cash	$ 5,426,000		$ 5,426,000		$ 6,077,000
Cash equivalents	7,679,000		7,679,000		978,000
Cash and cash equivalents in foreign bank	2,300,000		2,300,000		1,300,000
Income tax expense (benefit)	(303,000)	$ (625,000)	4,157,000	$ (451,000)
Short-term investments	$ 18,099,000		$ 18,099,000		24,728,000
Short-term investments, maturities			90 days
Net unrealized gains (losses)			$ (8,000)		$ 1,000
Percentage of investment in bond protected by bond default insurance	6.00%		6.00%		11.00%
Corporate Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	$ 4,700,000		$ 4,700,000		$ 7,600,000
U.S. Government Agency Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	3,500,000		3,500,000		7,000,000
Pre-refunded Municipal Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	5,800,000		5,800,000		7,500,000
Certificates of Deposit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	4,100,000		4,100,000		2,700,000
China [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash in foreign bank	2,000,000		2,000,000		$ 800,000
Israel [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Income tax expense (benefit)			100,000
Maximum [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Federal Deposit Insurance Corporation insured limit	$ 250,000		$ 250,000

Cash, Cash Equivalents and In37

Cash, Cash Equivalents and Investments - Cash Equivalents and Investments Measured at Fair Value (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	$ 7,677	$ 978
Total	25,770	25,707
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	7,677	978
Total	11,801	3,644
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Total	13,969	22,063
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Total	0	0
Pre-refunded Municipal Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	5,783	7,497
Pre-refunded Municipal Bonds [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	0	0
Pre-refunded Municipal Bonds [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	5,783	7,497
Pre-refunded Municipal Bonds [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	0	0
Corporate Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	4,686	7,558
Corporate Bonds [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	0	0
Corporate Bonds [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	4,686	7,558
Corporate Bonds [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	0	0
U.S. Government Agency Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	3,500	7,008
U.S. Government Agency Bonds [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	0	0
U.S. Government Agency Bonds [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	3,500	7,008
U.S. Government Agency Bonds [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	0	0
Certificates of Deposit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	4,124	2,666
Certificates of Deposit [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	4,124	2,666
Certificates of Deposit [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	0	0
Certificates of Deposit [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	$ 0	$ 0

Goodwill and Intangible Asset38

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended			9 Months Ended
	Feb. 28, 2015	Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Jun. 30, 2015
Finite-Lived Intangible Assets [Line Items]
Change in goodwill					$ 0
Amortization of intangible assets		$ 417,000		$ 1,125,000	1,930,000	$ 2,963,000
Increase (decrease) in cost of intangible assets		6,600,000
RF Solutions [Member]
Finite-Lived Intangible Assets [Line Items]
Fair value of reporting unit amount below carrying value							$ 4,700,000
Customer Contracts and Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets			$ 4,700,000
Customer Contracts and Relationships [Member] | RF Solutions [Member]
Finite-Lived Intangible Assets [Line Items]
Shortfall percentage on impairment charges			100.00%
Cost of Revenue [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets		$ 200,000		$ 200,000	$ 500,000	$ 400,000
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets basis over estimated useful lives					1 year
Minimum [Member] | Customer Contracts and Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets basis over estimated useful lives					4 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets basis over estimated useful lives					8 years
Maximum [Member] | Customer Contracts and Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets basis over estimated useful lives					6 years
Nexgen Wireless, Inc. [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill acquired	$ 3,300,000

Goodwill and Intangible Asset39

Goodwill and Intangible Assets - Summary of Other Intangible Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Cost	$ 43,314	$ 43,314
Accumulated Amortization	38,590	31,936
Net Book Value	4,724	11,378
Customer Contracts and Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	25,497	25,497
Accumulated Amortization	24,344	18,616
Net Book Value	1,153	6,881
Patents and Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	10,114	10,114
Accumulated Amortization	7,837	7,337
Net Book Value	2,277	2,777
Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	4,960	4,960
Accumulated Amortization	4,022	3,738
Net Book Value	938	1,222
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	2,743	2,743
Accumulated Amortization	2,387	2,245
Net Book Value	$ 356	$ 498

Goodwill and Intangible Asset40

Goodwill and Intangible Assets - Summary of Assigned Lives and Weighted Average Amortization Periods by Intangible Asset Category (Detail)	9 Months Ended
	Sep. 30, 2016
Minimum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	1 year
Maximum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	8 years
Customer Contracts and Relationships [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Weighted Average Amortization Period	5 years
Customer Contracts and Relationships [Member] | Minimum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	4 years
Customer Contracts and Relationships [Member] | Maximum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	6 years
Patents and Technology [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Weighted Average Amortization Period	5 years 1 month 6 days
Patents and Technology [Member] | Minimum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	3 years
Patents and Technology [Member] | Maximum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	6 years
Trademarks and Trade Names [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Weighted Average Amortization Period	5 years 6 months
Trademarks and Trade Names [Member] | Minimum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	3 years
Trademarks and Trade Names [Member] | Maximum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	8 years
Other [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Weighted Average Amortization Period	3 years 4 months 24 days
Other [Member] | Minimum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	1 year
Other [Member] | Maximum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	6 years

Goodwill and Intangible Asset41

Goodwill and Intangible Assets - Schedule of Expected Amortization Expense (Detail) $ in Thousands	Sep. 30, 2016USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2,016	$ 2,318
2,017	1,497
2,018	1,419
2,019	1,221
2,020	$ 199

Balance Sheet Information - Add

Balance Sheet Information - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Allowance for doubtful accounts	$ 252		$ 252		$ 314
Consigned inventory with customers	500		500		700
Allowance for inventory losses	2,800		2,800		$ 2,200
Depreciation and amortization	$ 800	$ 800	$ 2,400	$ 2,300
Equipment [Member]
Property, Plant and Equipment [Line Items]
Period over which assets are depreciated			5 years
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Period over which assets are depreciated			7 years
Building [Member]
Property, Plant and Equipment [Line Items]
Period over which assets are depreciated			30 years
Minimum [Member]
Property, Plant and Equipment [Line Items]
Standard term of accounts receivable			30 days
Minimum [Member] | Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Period over which assets are depreciated			3 years
Maximum [Member]
Property, Plant and Equipment [Line Items]
Standard term of accounts receivable			60 days
Useful lives of the assets			1 year
Maximum [Member] | Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Period over which assets are depreciated			5 years

Balance Sheet Information - Sum

Balance Sheet Information - Summary of Inventories (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Inventory Net [Abstract]
Raw materials	$ 8,903	$ 11,012
Work in process	1,097	917
Finished goods	4,705	5,667
Inventories, net	$ 14,705	$ 17,596

Balance Sheet Information - S44

Balance Sheet Information - Summary of Property and Equipment (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 33,514	$ 32,300
Less: Accumulated depreciation and amortization	(22,161)	(20,231)
Land	1,770	1,770
Property and equipment, net	13,123	13,839
Building [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	6,341	6,227
Computers and Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	11,645	10,931
Manufacturing and Test Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	13,041	12,826
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	1,240	1,273
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	1,228	1,001
Motor Vehicles [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 19	$ 42

Balance Sheet Information - S45

Balance Sheet Information - Summary of Accrued Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Payables And Accruals [Abstract]
Inventory receipts	$ 1,379	$ 1,628
Payroll, bonuses, and other employee benefits	1,293	1,179
Paid time off	1,199	1,271
Income and sales taxes	443	381
Warranties	319	348
Restructuring	186	237
Professional fees and contractors	167	305
Employee stock purchase plan	120	280
Real estate taxes	114	161
Deferred revenues	76	65
Other	246	335
Total	$ 5,542	$ 6,190

Balance Sheet Information - S46

Balance Sheet Information - Summary of Long-term Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Liabilities Noncurrent [Abstract]
Long-term obligations under capital leases	$ 174	$ 107
Deferred rent	171	250
Restructuring	93	0
Deferred revenues	9	31
Total	$ 447	$ 388

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail) - USD ($)	Feb. 27, 2015	Sep. 30, 2016	Sep. 30, 2015	Mar. 31, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015	May 05, 2015
Business Acquisition [Line Items]
Business acquisition, acquired entity name					Nexgen Wireless, Inc.
Business acquisition, effective date					Feb. 27, 2015
Asset purchase, date of agreement					Feb. 27, 2015
Contingent consideration related to claims escrow		$ 0			$ 0		$ 0
Goodwill		3,332,000			3,332,000		3,332,000
Amortization of intangible assets		$ 250,000	$ 958,000		$ 1,430,000	$ 2,535,000
Pro Forma [Member]
Business Acquisition [Line Items]
Amortization of intangible assets				$ 300,000
Nexgen Wireless, Inc. [Member]
Business Acquisition [Line Items]
Provisional purchase consideration	$ 21,400,000
Cash paid	18,250,000						20,500,000
Contingent consideration related to claims escrow	2,250,000						91,000
Business acquisition estimated excess working capital paid	800,000
Potential earn-out at fair value	100,000
Acquisition related transaction costs	$ 800,000
Weighted average amortization period of intangible assets	5 years
Percentage of revenue					78.00%
Goodwill							3,332,000
Assembled workforce, goodwill earned							$ 1,500,000
Nexgen APA Amendment [Member]
Business Acquisition [Line Items]
Contingent consideration related to claims escrow								$ 1,000,000
Portion of accounts receivable transferred								800,000
Escrowed funds payable								2,250,000
Nexgen APA Amendment [Member] | Estimated Fair Value [Member]
Business Acquisition [Line Items]
Contingent consideration related to claims escrow								$ 2,000,000

Acquisitions - Allocation of Pu

Acquisitions - Allocation of Purchase Price for Assets from Date of Acquisition (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Business Acquisition Purchase Price Allocation [Line Items]
Purchase price allocation, Goodwill	$ 3,332	$ 3,332
Nexgen Wireless, Inc. [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Purchase price allocation, Accounts receivable		5,358
Purchase price allocation, Prepaid and other assets		49
Purchase price allocation, Deferred cost of sales		24
Purchase price allocation, Fixed assets		43
Purchase price allocation, Assets		5,474
Purchase price allocation, Goodwill		3,332
Purchase price allocation, Total intangible assets		16,498
Purchase price allocation, Assets		21,972
Purchase price allocation, Accounts payable		200
Purchase price allocation, Accrued liabilities		341
Purchase price allocation, Liabilities		541
Purchase price allocation, Assets and Liabilities Assumed, Net		21,431
Nexgen Wireless, Inc. [Member] | Customer Relationships [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Purchase price allocation, Intangible assets		8,117
Nexgen Wireless, Inc. [Member] | Trade Names [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Purchase price allocation, Intangible assets		972
Nexgen Wireless, Inc. [Member] | Technology [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Purchase price allocation, Intangible assets		3,332
Nexgen Wireless, Inc. [Member] | Backlog [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Purchase price allocation, Intangible assets		162
Nexgen Wireless, Inc. [Member] | Non-Compete [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Purchase price allocation, Intangible assets		$ 583

Acquisitions - Reconciliation o

Acquisitions - Reconciliation of Assets Acquired with Cash Paid at Closing (Detail) - USD ($)	Feb. 27, 2015	Dec. 31, 2015	Sep. 30, 2016
Business Acquisition [Line Items]
Due Nexgen - contingent liability		$ 0	$ 0
Nexgen Wireless, Inc. [Member]
Business Acquisition [Line Items]
Net assets acquired		21,431,000
Due Nexgen - contingent liability	$ (2,250,000)	(91,000)
Due Nexgen - working capital adjustment		(840,000)
Cash paid at closing	$ 18,250,000	$ 20,500,000

Acquisitions - Pro Forma Financ

Acquisitions - Pro Forma Financial Information for Nexgen (Detail) - Nexgen Wireless, Inc. [Member] $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2015USD ($)$ / shares
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
REVENUES	$ 83,435
NET INCOME	$ (719)
Net Income per Share | $ / shares	$ (0.04)

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	$ 900	$ 700	$ 3,200	$ 1,400
Director Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense			400	300
Time-Based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	600	500	2,100	1,100
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	13	57	100	400
Employee Stock Purchase Plan ("ESPP") [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	42	55	100	200
Performance Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense		$ 33		$ 500
Short-Term Incentive Plan (STIP) [Member] | Stock Bonuses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	$ 300		$ 400

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock-Based Compensation (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	$ 944	$ 650	$ 3,187	$ 1,392
Cost of Revenues [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	61	115	325	244
Research and Development [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	183	99	525	244
Sales and Marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	158	230	486	370
General and Administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	$ 542	$ 206	$ 1,851	$ 534

Stock-Based Compensation - Rest

Stock-Based Compensation - Restricted Stock - Service-Based - Additional Information (Detail) - Service Based Restricted Stock [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants vesting period			4 years
Restricted shares vested grant date intrinsic value	$ 600	$ 57	$ 1,000	$ 1,100
Unrecognized compensation expense	$ 3,700		$ 3,700
Weighted average period			1 year 9 months 18 days

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Service-based Restricted Stock Activity (Detail)	9 Months Ended
	Sep. 30, 2016$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning balance, Shares	555,000
Ending balance, Shares	455,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning balance, Shares	1,050,172
Shares awarded, Shares	452,300
Shares vested, Shares	(204,398)
Shares cancelled, Shares	(134,726)
Ending balance, Shares	1,163,348
Beginning balance, Weighted Average Grant Date Fair Value | $ / shares	$ 6.11
Shares awarded, Weighted Average Grant Date Fair Value | $ / shares	5.61
Shares vested, Weighted Average Grant Date Fair Value | $ / shares	6.61
Shares cancelled, Weighted Average Grant Date Fair Value | $ / shares	6.17
Ending balance, Weighted Average Grant Date Fair Value | $ / shares	$ 5.83

Disclosure - Stock-Based Compen

Disclosure - Stock-Based Compensation - Summary of Restricted Stock Unit Activity (Detail)	9 Months Ended
	Sep. 30, 2016$ / sharesshares
Schedule Of Summary Of Restricted Stock Unit Activity [Line Items]
Beginning balance, Shares	555,000
Ending balance, Shares	455,000
Restricted Stock Units [Member]
Schedule Of Summary Of Restricted Stock Unit Activity [Line Items]
Beginning balance, Shares	22,725
Units awarded, Units	15,000
Units vested, Units	(1,337)
Ending balance, Shares	36,388
Beginning balance, Weighted Average Grant Date Fair Value | $ / shares	$ 5.65
Units awarded, Weighted Average Grant Date Fair Value | $ / shares	5.61
Units vested, Weighted Average Grant Date Fair Value | $ / shares	7.25
Ending balance, Weighted Average Grant Date Fair Value | $ / shares	$ 5.57

Stock-Based Compensation - Re56

Stock-Based Compensation - Restricted Stock Units - Service-Based - Additional Information (Detail) - Service Based Restricted Stock Units [Member] - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016	Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares vested intrinsic value	$ 0	$ 7,000	$ 20,000
Unrecognized compensation expense	$ 100,000	$ 100,000
Weighted average period		1 year 3 months 18 days

Stock-Based Compensation - St57

Stock-Based Compensation - Stock Options - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016	Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Lower range of exercise prices		$ 4.50
Upper range of exercise prices		11
Intrinsic value based on share price	$ 5.29	$ 5.29
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock options vesting provisions, description		The Company grants new stock options with a seven-year life that contain installment vesting over a period of four years, 25% after one year, and monthly thereafter.
Options vested in remaining period		4 years
Options vesting percentage after one year		25.00%
Period of termination of employment		90 days
Stock options granted period		7 years
Proceeds from options exercised			$ 300
Options exercised		0	35,134
Options granted	24,500	24,500
Intrinsic value			$ 34
Lower range of exercise prices		$ 4.50
Upper range of exercise prices		$ 11
Period of expected life, options granted		5 years
Unrecognized compensation expense	$ 100	$ 100
Weighted average period		1 year

Stock-Based Compensation - Su58

Stock-Based Compensation - Summary of Stock Option Activity (Detail) - Stock Options [Member] - $ / shares	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016
Summary Of Stock Option Activities [Line Items]
Options Outstanding, Beginning balance, Shares		1,220,442
Options Outstanding, Granted	24,500	24,500
Options Outstanding, Expired or cancelled		(294,229)
Options Outstanding, Forfeited		(63,471)
Options Outstanding, Ending balance, Shares	887,242	887,242
Options Exercisable, Ending balance, Shares	662,089	662,089
Options Outstanding, Beginning balance, Weighted Average Exercise Price		$ 7.72
Weighted Average Exercise Price, Granted		4.95
Weighted Average Exercise Price, Expired or Cancelled		8.84
Weighted Average Exercise Price, Forfeited		7.24
Options Outstanding, Ending balance, Weighted Average Exercise Price	$ 7.31	7.31
Options Outstanding, Exercisable at End of Year, Weighted Average Exercise Price	$ 7.39	$ 7.39

Stock-Based Compensation - Info

Stock-Based Compensation - Information about Stock Options Outstanding Under all Stock Plans (Detail)	9 Months Ended
	Sep. 30, 2016$ / sharesshares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range of exercise prices	$ 4.50
Upper range of exercise prices	$ 11
Options Outstanding, Number | shares	887,242
Options Outstanding, Weighted Average Contractual Life (Years)	3 years 5 months 1 day
Options Outstanding, Weighted-Average Exercise Price	$ 7.31
Options Exercisable, Number | shares	662,089
Options Exercisable, Weighted Average Exercise Price	$ 7.39
Range One [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range of exercise prices	4.50
Upper range of exercise prices	$ 6
Options Outstanding, Number | shares	36,379
Options Outstanding, Weighted Average Contractual Life (Years)	6 years 5 months 16 days
Options Outstanding, Weighted-Average Exercise Price	$ 5.28
Options Exercisable, Number | shares	1,755
Options Exercisable, Weighted Average Exercise Price	$ 5.90
Range Two [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range of exercise prices	6.01
Upper range of exercise prices	$ 6.50
Options Outstanding, Number | shares	16,267
Options Outstanding, Weighted Average Contractual Life (Years)	2 years 6 months 15 days
Options Outstanding, Weighted-Average Exercise Price	$ 6.23
Options Exercisable, Number | shares	16,267
Options Exercisable, Weighted Average Exercise Price	$ 6.23
Range Three [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range of exercise prices	6.51
Upper range of exercise prices	$ 7
Options Outstanding, Number | shares	37,522
Options Outstanding, Weighted Average Contractual Life (Years)	1 year 7 months 24 days
Options Outstanding, Weighted-Average Exercise Price	$ 6.85
Options Exercisable, Number | shares	36,251
Options Exercisable, Weighted Average Exercise Price	$ 6.86
Range Four [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range of exercise prices	7.01
Upper range of exercise prices	$ 7.50
Options Outstanding, Number | shares	641,360
Options Outstanding, Weighted Average Contractual Life (Years)	3 years 5 months 5 days
Options Outstanding, Weighted-Average Exercise Price	$ 7.17
Options Exercisable, Number | shares	499,454
Options Exercisable, Weighted Average Exercise Price	$ 7.17
Range Five [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range of exercise prices	7.51
Upper range of exercise prices	$ 8
Options Outstanding, Number | shares	18,000
Options Outstanding, Weighted Average Contractual Life (Years)	4 years 15 days
Options Outstanding, Weighted-Average Exercise Price	$ 7.80
Options Exercisable, Number | shares	12,352
Options Exercisable, Weighted Average Exercise Price	$ 7.81
Range Six [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range of exercise prices	8.01
Upper range of exercise prices	$ 8.50
Options Outstanding, Number | shares	75,232
Options Outstanding, Weighted Average Contractual Life (Years)	4 years 8 months 23 days
Options Outstanding, Weighted-Average Exercise Price	$ 8.12
Options Exercisable, Number | shares	35,415
Options Exercisable, Weighted Average Exercise Price	$ 8.14
Range Seven [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range of exercise prices	8.51
Upper range of exercise prices	$ 9
Options Outstanding, Number | shares	6,750
Options Outstanding, Weighted Average Contractual Life (Years)	2 years 9 months 29 days
Options Outstanding, Weighted-Average Exercise Price	$ 8.76
Options Exercisable, Number | shares	5,301
Options Exercisable, Weighted Average Exercise Price	$ 8.77
Range Eight [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range of exercise prices	9.01
Upper range of exercise prices	$ 9.50
Options Outstanding, Number | shares	38,832
Options Outstanding, Weighted Average Contractual Life (Years)	4 months 17 days
Options Outstanding, Weighted-Average Exercise Price	$ 9.29
Options Exercisable, Number | shares	38,832
Options Exercisable, Weighted Average Exercise Price	$ 9.29
Range Nine [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range of exercise prices	9.51
Upper range of exercise prices	$ 10
Options Outstanding, Number | shares	15,500
Options Outstanding, Weighted Average Contractual Life (Years)	1 year 11 months 19 days
Options Outstanding, Weighted-Average Exercise Price	$ 9.63
Options Exercisable, Number | shares	15,062
Options Exercisable, Weighted Average Exercise Price	$ 9.63
Range Ten [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range of exercise prices	10.01
Upper range of exercise prices	$ 11
Options Outstanding, Number | shares	1,400
Options Outstanding, Weighted Average Contractual Life (Years)	1 year 10 months 2 days
Options Outstanding, Weighted-Average Exercise Price	$ 10.46
Options Exercisable, Number | shares	1,400
Options Exercisable, Weighted Average Exercise Price	$ 10.46

Stock-Based Compensation - Weig

Stock-Based Compensation - Weighted Average Contractual Life and Intrinsic Value of Options Outstanding (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2016USD ($)
Share Based Compensation Arrangement By Share Based Payment Award Options Additional Disclosures [Abstract]
Options Outstanding Weighted Average Contractual Life (years)	3 years 5 months 1 day
Options Exercisable Weighted Average Contractual Life (years)	3 years 1 month 2 days
Options Outstanding Intrinsic Value	$ 8
Options Exercisable Intrinsic Value	$ 0

Stock-Based Compensation - Fair

Stock-Based Compensation - Fair Value of Date of Grant Using Black-Scholes Option-Pricing Model (Detail) - Stock Options [Member]	9 Months Ended
	Sep. 30, 2016
Share Based Payment Award Stock Options Valuation Assumptions [Line Items]
Dividend yield	3.80%
Risk-free interest rate	0.80%
Expected volatility	33.00%
Expected life (in years)	4 years 10 months 24 days

Stock-Based Compensation - Perf

Stock-Based Compensation - Performance-based Equity Awards - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	$ 900,000	$ 700,000	$ 3,200,000	$ 1,400,000
Unvested performance units	455,000		455,000		555,000
Performance Based Equity Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested units forfeitures			100,000
2015 Long-Term Incentive Plan [Member] | Performance Based Equity Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense			$ 0		$ 0
2014 LTIP - One-year Revenue Goals [Member] | Performance Based Equity Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense					$ 0
Unvested units cancelled					162,000
Minimum [Member] | 2015 Long-Term Incentive Plan [Member] | Performance Based Equity Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares earned	212,000		212,000
Minimum [Member] | 2014 LTIP - One-year Revenue Goals [Member] | Performance Based Equity Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares earned	190,000		190,000
Maximum [Member] | 2015 Long-Term Incentive Plan [Member] | Performance Based Equity Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares earned	424,000		424,000
Maximum [Member] | 2014 LTIP - One-year Revenue Goals [Member] | Performance Based Equity Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares earned	380,000		380,000

Stock-Based Compensation - Dire

Stock-Based Compensation - Director Shares - Additional Information (Detail) - Director Shares [Member] - USD ($) $ / shares in Units, $ in Millions	1 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued to directors	85,374	37,379
Intrinsic value of shares	$ 0.4	$ 0.3
Shares issued to directors, award date of share price	$ 4.65	$ 7.41

Stock-Based Compensation - Empl

Stock-Based Compensation - Employee Stock Purchase Plan ("ESPP") - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended				9 Months Ended
	Aug. 31, 2016	Feb. 29, 2016	Aug. 31, 2015	Feb. 28, 2015	Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Offering period					6 months
Employee Stock Purchase Plan ("ESPP") [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of fair market value to determine purchase price					85.00%
Proceeds of from issuance of shares under ESPP	$ 0.3	$ 0.4	$ 0.4	$ 0.4
Options issued	67,533	78,415	76,314	57,293
Rate of discount on fair market value of common stock under ESPP					15.00%
Period of expected life, options granted					5 years

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 ("ESPP") [Member]	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Calculation of fair value of each employee stock purchase grant using the Black-Scholes option-pricing model
Dividend yield	3.80%	3.40%
Risk-free interest rate	0.80%	0.60%
Expected volatility	33.00%	34.00%
Expected life (in years)	6 months	6 months

Stock-Based Compensation - Em66

Stock-Based Compensation - Employee Withholding Taxes on Stock Awards - Additional Information (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
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	$ 0.4	$ 0.4

Stock-Based Compensation - St67

Stock-Based Compensation - Stock Repurchases - Additional Information (Detail) - $ / shares	3 Months Ended		12 Months Ended
	Sep. 30, 2016	Mar. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Share Repurchases [Abstract]
Stock repurchased during period, shares	0	783,212	2,726,000	1,942,788
Stock repurchased during period, average price per share		$ 5.23		$ 6.22
Number of shares to be repurchased under stock repurchase program		0

Benefit Plans - Additional Info

Benefit Plans - Additional Information (Detail) - Employee Benefit Plans [Member]	9 Months Ended
	Sep. 30, 2016
Defined Benefit Plan Disclosure [Line Items]
Maximum percentage of current compensation of employee to contribute in plan	15.00%
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer matches employee contribution percentage	4.00%

Benefit Plans - Summary of Cont

Benefit Plans - Summary of Contributions to Retirement Plans (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Compensation And Retirement Disclosure [Abstract]
PCTEL, Inc. 401(k) Profit sharing Plan - US employees	$ 168	$ 195	$ 509	$ 575
Defined contribution plans - foreign employees	89	87	285	248
Total	$ 257	$ 282	$ 794	$ 823

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) $ in Thousands

Feb. 27, 2015USD ($)ft²

Jun. 30, 2016USD ($)ft²

Feb. 29, 2016ft²

Oct. 31, 2015USD ($)ft²

May 31, 2015ft²

Sep. 30, 2016USD ($)

Sep. 30, 2015USD ($)

Sep. 30, 2016USD ($)

Sep. 30, 2015USD ($)

Dec. 31, 2015USD ($)

Mar. 31, 2016USD ($)

Dec. 31, 2014USD ($)

Commitments And Contingencies Disclosure [Line Items]

Restructuring expenses

$ 113

$ 413

$ 654

$ 852

Restructuring reserve

278

278

$ 237

Rent expense under leases

200

300

700

800

Operating lease obligation

3,202

3,202

Allowance for product returns

100

200

Warranty reserve

319

$ 319

348

Antenna [Member]

Commitments And Contingencies Disclosure [Line Items]

Repair and replacement warranty

5 years

Warranty Reserves [Member]

Commitments And Contingencies Disclosure [Line Items]

Warranty reserve

319

$ 381

$ 319

$ 381

348

$ 304

Accrued liabilities

Commitments And Contingencies Disclosure [Line Items]

Restructuring reserve

200

200

Long-term liabilities

Commitments And Contingencies Disclosure [Line Items]

Restructuring reserve

100

100

Englewood, Colorado [Member]

Commitments And Contingencies Disclosure [Line Items]

Increase in lease termination liability

100

Area of office space | ft²

4,759

Lease expiration date

Oct. 31, 2020

Lease term

5 years 5 months

Operating lease obligation

500

500

Melbourne, Florida [Member]

Commitments And Contingencies Disclosure [Line Items]

Area of office space before modification | ft²

6,174

Area of office space | ft²

3,600

Lease expiration date

Dec. 31, 2018

Tianjin, China [Member]

Commitments And Contingencies Disclosure [Line Items]

Area of office space | ft²

22,169

Lease expiration date

Oct. 31, 2020

Lease term

5 years

Area of office additional manufacturing space | ft²

44,289

Operating lease obligation

$ 200

Schaumburg, Illinois [Member]

Commitments And Contingencies Disclosure [Line Items]

Area of office space | ft²

6,652

Lease expiration date

Oct. 31, 2018

Operating lease obligation

$ 300

Lease option on early termination date

Aug. 31, 2016

Termination fee on early payment

$ 57

Beijing Design Center [Member]

Commitments And Contingencies Disclosure [Line Items]

Area of office space | ft²

5,393

Lease term

4 years

Operating lease obligation

$ 400

Employee Severance and Payroll Related Costs [Member]

Commitments And Contingencies Disclosure [Line Items]

Restructuring expenses

300

Lease Terminations [Member]

Commitments And Contingencies Disclosure [Line Items]

Restructuring expenses

328

Restructuring reserve

209

209

0

Disposal of Fixed Assets [Member]

Commitments And Contingencies Disclosure [Line Items]

Restructuring expenses

72

Restructuring reserve

$ 0

$ 0

$ 0

Commitments and Contingencies71

Commitments and Contingencies - Summary of Restructuring Activity (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Restructuring Cost and Reserve [Line Items]
Beginning Balance			$ 237
Restructuring Expenses	$ 113	$ 413	654	$ 852
Cash Payments/ Adjustments			(613)
Ending Balance	278		278
Severance and Related Employee Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance			237
Restructuring Expenses			254
Cash Payments/ Adjustments			(422)
Ending Balance	69		69
Lease Terminations [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance			0
Restructuring Expenses			328
Cash Payments/ Adjustments			(119)
Ending Balance	209		209
Fixed Assets [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance			0
Restructuring Expenses			72
Cash Payments/ Adjustments			(72)
Ending Balance	$ 0		$ 0

Commitments and Contingencies72

Commitments and Contingencies - Future Minimum Rental Payments Under Operating Leases (Detail) $ in Thousands	Sep. 30, 2016USD ($)
Operating Leases Future Minimum Payments Due [Abstract]
2,016	$ 245
2,017	907
2,018	887
2,019	827
2,020	308
Thereafter	28
Future minimum lease payments	$ 3,202

Commitments and Contingencies73

Commitments and Contingencies - Summary of Capital Leases for Office and Manufacturing Equipment (Detail) - Office and Manufacturing Equipment [Member] - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Capital Leased Assets [Line Items]
Cost	$ 324	$ 190
Accumulated Depreciation	(88)	(48)
Net Book Value	$ 236	$ 142

Commitments and Contingencies74

Commitments and Contingencies - Present Value of Net Minimum Lease Payments, Capital Leases (Detail) $ in Thousands	Sep. 30, 2016USD ($)
Commitments And Contingencies Disclosure [Abstract]
2,016	$ 19
2,017	77
2,018	76
2,019	60
2,020	20
2,021	8
Total minimum payments required:	260
Less amount representing interest:	18
Present value of net minimum lease payments:	$ 242

Commitments and Contingencies75

Commitments and Contingencies - Changes in Warranty Reserves (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Changes in warranty reserves
Beginning balance	$ 348
Ending balance	319
Warranty Reserves [Member]
Changes in warranty reserves
Beginning balance	348	$ 304
Provisions for warranties	57	93
Consumption of reserves	(86)	(16)
Ending balance	$ 319	$ 381

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Jun. 30, 2016	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ (303)	$ (625)		$ 4,157	$ (451)
Increase to the valuation allowance for U.S. deferred tax assets				$ 7,600
Statutory rate				34.00%	34.00%
Deferred tax assets, net of deferred tax liabilities	17,600			$ 17,600
Deferred tax assets, valuation allowance	8,300			$ 8,300		$ 700
Domestic deferred tax assets ratable reversal pattern period				15 years
Operating loss carry forward, expiration period				The carry forward rules allow for up to a 20 year carry forward of net operating losses
Net operating loss carry forward period				20 years
Average period required to utilize future income				27 years 6 months
Weighted average valuation allowance of income tax			$ 7,600
Gross unrecognized tax benefit	$ 800			$ 800		$ 800

Segment, Customer and Geograp77

Segment, Customer and Geographic Information - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2016Customer	Sep. 30, 2015Customer	Sep. 30, 2016SegmentCustomer	Sep. 30, 2015Customer
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of reporting segments | Segment			2
Number of customers accounted for more than ten percentage of revenue | Customer	1	0	0	0
Sales [Member] | Customer Concentration Risk | Minimum [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Entity wide revenue major customer, benchmark percentage	10.00%	10.00%	10.00%	10.00%

Segment, Customer and Geograp78

Segment, Customer and Geographic Information - Result of Operations by Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Results of operations by segments
REVENUES	$ 24,687	$ 26,526	$ 70,004	$ 80,477
GROSS PROFIT	8,937	8,463	25,225	27,982
OPERATING INCOME (LOSS)	(163)	(2,221)	(8,246)	(3,982)
Depreciation	814	781	2,405	2,298
Intangible amortization	417	1,125	1,930	2,963
Capital expenditures	334	286	1,699	1,583
Operating Segments [Member] | Connected Solutions [Member]
Results of operations by segments
REVENUES	17,136	17,450	47,616	52,903
GROSS PROFIT	5,771	4,729	15,035	15,549
OPERATING INCOME (LOSS)	2,530	1,160	5,625	4,255
Depreciation	484	428	1,417	1,281
Intangible amortization	39	195	153	655
Capital expenditures	288	135	1,127	653
Operating Segments [Member] | RF Solutions [Member]
Results of operations by segments
REVENUES	7,609	9,115	22,552	27,749
GROSS PROFIT	3,179	3,727	10,197	12,413
OPERATING INCOME (LOSS)	(330)	(1,058)	(6,227)	(181)
Depreciation	330	289	988	809
Intangible amortization	378	930	1,777	2,308
Capital expenditures	41	151	239	836
Corporate, Non-Segment and Eliminations [Member]
Results of operations by segments
REVENUES	(58)	(39)	(164)	(175)
GROSS PROFIT	(13)	7	(7)	20
OPERATING INCOME (LOSS)	(2,363)	(2,323)	(7,644)	(8,056)
Depreciation	0	64	0	208
Intangible amortization	0	0	0	0
Capital expenditures	$ 5	$ 0	$ 333	$ 94

Segment, Customer and Geograp79

Segment, Customer and Geographic Information - Assets by Segment (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Results of operations by segments
Accounts receivable	$ 17,997	$ 21,001
Inventories	14,705	17,596
Property and equipment, net	13,123	13,839
Goodwill	3,332	3,332
Intangible assets, net	4,724	11,378
Deferred tax assets, net	9,264	13,155
Other noncurrent assets	38	40
Operating Segments [Member] | Connected Solutions [Member]
Results of operations by segments
Accounts receivable	11,801	12,875
Inventories	12,371	15,507
Property and equipment, net	10,028	10,250
Goodwill	0	0
Intangible assets, net	272	425
Deferred tax assets, net	0	0
Other noncurrent assets	0	0
Operating Segments [Member] | RF Solutions [Member]
Results of operations by segments
Accounts receivable	6,196	8,126
Inventories	2,334	2,089
Property and equipment, net	2,312	2,985
Goodwill	3,332	3,332
Intangible assets, net	4,452	10,953
Deferred tax assets, net	0	0
Other noncurrent assets	0	0
Corporate, Non-Segment [Member]
Results of operations by segments
Accounts receivable	0	0
Inventories	0	0
Property and equipment, net	783	604
Goodwill	0	0
Intangible assets, net	0	0
Deferred tax assets, net	9,264	13,155
Other noncurrent assets	$ 38	$ 40

Segment, Customer and Geograp80

Segment, Customer and Geographic Information - Revenues Attributable to Products and Services (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenues:
Products	$ 20,892	$ 22,393	$ 61,383	$ 68,583
Services	3,795	4,133	8,621	11,894
Total revenues	24,687	26,526	70,004	80,477
Cost of revenues:
Products	12,637	14,214	36,735	41,742
Services	3,113	3,849	8,044	10,753
Total cost of revenues	$ 15,750	$ 18,063	$ 44,779	$ 52,495

Segment, Customer and Geograp81

Segment, Customer and Geographic Information - Customer Accounted Revenues by Geographic Location (Detail) - Sales [Member] - Geographic Concentration Risk [Member]	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	21.00%	9.00%	19.00%	9.00%
Europe, Middle East, & Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	7.00%	7.00%	8.00%	9.00%
Other Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	6.00%	7.00%	6.00%	6.00%
Total Foreign Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	34.00%	23.00%	33.00%	24.00%

Related Parties - Additional In

Related Parties - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2016
Pryor, Oklahoma Facility [Member]
Related Party Transaction [Line Items]
Lease termination date	2015-10