PC Tel (PCTI) 10-Q 9 Aug 17 2017 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Aug. 09, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
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		17,789,214

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
ASSETS
Cash and cash equivalents	$ 11,875	$ 14,855
Short-term investment securities	22,340	18,456
Accounts receivable, net of allowance for doubtful accounts of $257 and $273 at June 30, 2017 and December 31, 2016, respectively	17,735	19,101
Inventories, net	13,783	14,442
Prepaid expenses and other assets	1,365	1,498
Current assets held for sale	694	50
Total current assets	67,792	68,402
Property and equipment, net	12,310	11,796
Goodwill	3,332	3,332
Intangible assets, net	2,694	3,275
Deferred tax assets, net	5,647	4,512
Other noncurrent assets	83	36
Non-current assets held for sale	0	813
TOTAL ASSETS	91,858	92,166
LIABILITIES AND STOCKHOLDERS’ EQUITY
Accounts payable	6,009	6,073
Accrued liabilities	6,300	7,177
Total current liabilities	12,309	13,250
Other long-term liabilities	472	391
Total liabilities	12,781	13,641
Stockholders’ equity:
Common stock, $0.001 par value, 100,000,000 shares authorized, 17,791,498 and 17,335,122 shares issued and outstanding at June 30, 2017 and December 31, 2016, respectively	18	17
Additional paid-in capital	134,748	134,480
Accumulated deficit	(55,463)	(55,590)
Accumulated other comprehensive loss	(226)	(382)
Total stockholders’ equity	79,077	78,525
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 91,858	$ 92,166

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Statement Of Financial Position [Abstract]
Allowance for accounts receivable	$ 257	$ 273
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	17,791,498	17,335,122
Common stock, shares outstanding	17,791,498	17,335,122

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
REVENUES	$ 21,501	$ 21,308	$ 44,471	$ 40,491
COST OF REVENUES	12,539	12,374	26,055	24,097
GROSS PROFIT	8,962	8,934	18,416	16,394
OPERATING EXPENSES:
Research and development	2,667	2,523	5,383	5,130
Sales and marketing	2,912	3,090	6,165	5,954
General and administrative	3,598	3,256	6,937	6,185
Amortization of intangible assets	124	129	248	284
Restructuring expenses	0	22	0	216
Total operating expenses	9,301	9,020	18,733	17,769
OPERATING LOSS	(339)	(86)	(317)	(1,375)
Other income, net	14	8	42	14
LOSS BEFORE INCOME TAXES	(325)	(78)	(275)	(1,361)
(Benefit) expense for income taxes	(140)	7,703	(274)	6,957
NET LOSS FROM CONTINUING OPERATIONS	(185)	(7,781)	(1)	(8,318)
NET LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX BENEFIT	(168)	(3,292)	(382)	(4,211)
NET LOSS	$ (353)	$ (11,073)	$ (383)	$ (12,529)
Net Loss per Share From Continuing Operations:
Basic	$ (0.01)	$ (0.49)	$ 0	$ (0.52)
Diluted	(0.01)	(0.49)	0	(0.52)
Net Loss per Share From Discontinued Operations:
Basic	(0.01)	(0.21)	(0.02)	(0.26)
Diluted	(0.01)	(0.21)	(0.02)	(0.26)
Net Loss per Share:
Basic	(0.02)	(0.69)	(0.02)	(0.78)
Diluted	$ (0.02)	$ (0.69)	$ (0.02)	$ (0.78)
Weighted Average Shares:
Basic	16,534	15,979	16,437	16,149
Diluted	16,534	15,979	16,437	16,149
Cash dividend per share	$ 0.05	$ 0.05	$ 0.10	$ 0.10

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income (Loss) (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement Of Income And Comprehensive Income [Abstract]
NET LOSS	$ (353)	$ (11,073)	$ (383)	$ (12,529)
OTHER COMPREHENSIVE INCOME (LOSS):
Foreign currency translation adjustments	105	(136)	156	(112)
COMPREHENSIVE LOSS	$ (248)	$ (11,209)	$ (227)	$ (12,641)

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Stockholders' Equity - 6 months ended Jun. 30, 2017 - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid - In Capital [Member]	Retained Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
BALANCE at beginning of year at Dec. 31, 2016	$ 78,525	$ 17	$ 134,480	$ (55,590)	$ (382)
Cumulative-effect adjustment resulting from adoption of ASU 2016-09 at Dec. 31, 2016	510			510
BALANCE at beginning of year, as adjusted at Dec. 31, 2016	79,035	17	134,480	(55,080)	(382)
Stock-based compensation expense	1,846	1	1,845	0	0
Issuance of shares for stock purchase plans	867	0	867	0	0
Cancellation of shares for payment of withholding tax	(692)	0	(692)	0	0
Dividends paid	(1,752)	0	(1,752)	0	0
Net loss	(383)	0	0	(383)	0
Foreign currency translation adjustments	156	0	0	0	156
BALANCE at end of year at Jun. 30, 2017	$ 79,077	$ 18	$ 134,748	$ (55,463)	$ (226)

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Operating Activities:
Net loss from continuing operations	$ (1)	$ (8,318)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation	1,262	1,319
Intangible asset amortization	581	618
Stock-based compensation	1,797	2,090
Loss on disposal/sale of property and equipment	3	5
Restructuring costs	(33)	109
Deferred tax provision	(423)	6,700
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	1,451	2,770
Inventories	779	2,325
Prepaid expenses and other assets	96	157
Accounts payable	(232)	(1,907)
Income taxes payable	(186)	(54)
Other accrued liabilities	(719)	(576)
Deferred revenue	20	41
Net cash provided by operating activities	4,395	5,279
Investing Activities:
Capital expenditures	(1,544)	(1,268)
Proceeds from disposal of property and equipment	0	1
Purchases of investments	(23,071)	(28,519)
Redemptions/maturities of short-term investments	19,187	31,274
Net cash (used in) provided by investing activities	(5,428)	1,488
Financing Activities:
Proceeds from issuance of common stock	867	350
Payments for repurchase of common stock	0	(4,095)
Payment of withholding tax on stock-based compensation	(692)	(187)
Principle payments on capital leases	(41)	(9)
Cash dividends	(1,752)	(1,723)
Net cash used in financing activities	(1,618)	(5,664)
Cash flows from discontinued operations:
Net cash used in operating activities	(349)	(690)
Net cash used in investing activities	(16)	(124)
Net (decrease) increase in cash and cash equivalents	(3,016)	289
Effect of exchange rate changes on cash	36	(39)
Cash and cash equivalents, beginning of year	14,855	7,055
Cash and Cash Equivalents, End of Period	$ 11,875	$ 7,305

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2017
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, 2016. Nature of Operations PCTEL, Inc. (“PCTEL”, the “Company”, “we”, “ours”, and “us”) delivers P erformance C ritical TEL ecom technology solutions to the wireless industry. PCTEL is a leading global supplier of antennas and wireless network testing solutions. PCTEL’s Connected Solutions segment designs and manufactures precision antennas. PCTEL antennas are deployed in small cells, enterprise Wi-Fi access points, fleet management and transit systems, and in network equipment and devices for the Industrial Internet of Things (“IIoT”). PCTEL’s RF Solutions segment p rovides test tools that improve the performance of wireless networks globally. Mobile operators, neutral hosts, and equipment manufacturers rely on PCTEL to analyze, design, and optimize next generation wireless networks. 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 PCTEL Connected Solutions designs and manufactures precision antennas. PCTEL antennas are deployed primarily in small cells, enterprise Wi-Fi access points, fleet management and transit systems, and in equipment and devices for the Industrial Internet of Things (“IIoT”). Revenue growth in these markets is driven by the increased use of wireless communications and increased complexity trends occurring in these markets. PCTEL antennas are primarily sold to original equipment manufacturer (“OEM”) providers where they are designed into the customer’s solution. Competition in the antenna markets addressed by Connected Solutions is fragmented. Competitors include Amphenol, Comtelco, Laird, Mobile Mark, Pulse, Radiall/Larsen, and Airgain. 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 market. These include radio frequency engineering, mobile antenna design and manufacturing, mechanical engineering, product quality and testing, and wireless network engineering. RF Solutions Segment PCTEL RF Solutions p rovides test tools to analyze, design, and optimize next generation wireless networks. Revenue growth is driven by the implementation and roll out of new wireless technology standards (i.e., 1G to 2G, 2G to 3G, 3G to 4G, 4G to 5G, etc.). PCTEL test equipment is sold directly to wireless carriers or to Competitors for PCTEL’s test tool products include OEMs such as Anritsu, Berkley Varitronics, Digital Receiver Technology, and Rohde and Schwarz. PCTEL maintains expertise in several technology areas in order to be competitive in the test tool market. These include radio frequency engineering, digital signal process (“DSP”) engineering, manufacturing, mechanical engineering, product quality and testing, and wireless network engineering. Discontinued Operations During the quarter ended June 30, 2017, the Company approved a plan to sell its Network Engineering Services business (“Engineering Services”) and shift its focus towards research and development driven radio frequency (”RF”) products Engineering Services is part of the RF Solutions segment. The Company classified the assets of the Network Engineering Services business unit (“Engineering Services”) as held for sale and classified the results of its operations as discontinued operations for the three and six months ended June 30, 2017 and 2016, respectively. The financial statements have been restated to reflect the historical results of Engineering Services as discontinued operations. See Note 5 in the notes to the financial statements for more information on discontinued operations. On July 31, 2017, the Company sold substantially all of the assets of the Company’s Network Engineering Services business unit to Gabe’s Construction Co., Inc. (“Gabe’s). See Note 13 related to subsequent events for additional information related to the sale to Gabe’s. Basis of Consolidation The condensed consolidated balance sheet as of June 30, 2017 and the condensed consolidated statements of operations, statements of comprehensive loss, and cash flows for the three and six months ended June 30, 2017 and 2016, 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, 2016. 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, 2016 (“the 2016 Form 10-K”). There were no changes in the Company’s significant accounting policies during the three and six months ended June 30, 2017. In addition, the Company reaffirms the use of estimates in the preparation of the financial statements as set forth in the 2016 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 2016 Form 10-K. The results of operations for the period ended June 30, 2017 may not be indicative of the results for the period ending December 31, 2017. Reclassifications Certain reclassifications of the prior year’s financial statement and footnote amounts have been made to conform to the current year’s presentation. 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 losses resulting from foreign currency transactions included in other income, net were $41 and $19 for the three months ended June 30, 2017 and 2016, respectively. Net foreign exchange losses resulting from foreign currency transactions included in other income, net were $53 and $35 for the six months ended June 30, 2017 and 2016, respectively. Recent Accounting Pronouncements In January 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-04, Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment (“ASU 2017-04”). ASU 2017-04 eliminates Step 2 as part of the goodwill impairment test, the result of which is that the impairment charge recognized would now be the amount by which the carrying value exceeds the reporting unit’s fair value. The loss to be recognized cannot exceed the amount of goodwill allocated to that reporting unit. The Company early adopted this guidance on January 1, 2017 because its annual impairment test is performed after January 1, 2017. The adoption of this ASU is not expected to have a material impact on the Company's consolidated financial statements. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. This ASU addresses the following eight specific cash flow issues: Debt prepayment or debt extinguishment costs; settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing; contingent consideration payments made after a business combination; proceeds from the settlement of insurance claims; proceeds from the settlement of corporate-owned life insurance policies (including bank-owned life insurance policies); distributions received from equity method investees; beneficial interests in securitization transactions; and separately identifiable cash flows and application of the predominance principle. This guidance will be effective for us on January 1, 2018. The Company does not expect the adoption of this ASU to have a material impact on its consolidated financial statements. In June 2016, the FASB issued Accounting Standards Update No. 2016-13 ("ASU 2016-13") regarding ASC Topic 326, "Financial Instruments - Credit Losses," which modifies the measurement of expected credit losses of certain financial instruments. The amendments will be effective for us on January 1, 2020. The Company is currently evaluating this guidance and the impact it will have on its consolidated financial statements. 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. The Company adopted this ASU in the first quarter 2017. Upon adoption, the Company recognized deferred tax assets of $0.6 million for all excess tax benefits that had not been previously recognized. The Company also elected to recognize forfeitures as incurred. The Company recorded an adjustment of $0.1 million to deferred tax assets for estimated forfeitures previously recorded. These adjustments were recorded through a cumulative-effect adjustment to retained earnings of approximately $0.5 million and adjustment to the valuation allowance for $0.2 million. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which amends existing guidance to require lessees to recognize assets and liabilities on the balance sheet for the rights and obligations created by long-term leases and to disclose additional quantitative and qualitative information about leasing arrangements. This ASU also provides clarifications surrounding the presentation of the effects of leases in the income statement and statement of cash flows. This guidance will be effective for us on January 1, 2019. The Company is currently evaluating this guidance and the impact it will have on its consolidated financial statements and related disclosures. In July 2015, the FASB issued ASU No. 2015-11, Simplifying the Measurement of Inventory. ASU 2015-11 simplifies the subsequent measurement of inventory by requiring inventory to be measured at the lower of cost and net realizable value. ASU 2015-11 applies only to inventories for which cost is determined by methods other than last-in first-out and the retail inventory method. The Company adopted this guidance on January 1, 2017. The adoption of this ASU did not have a material impact to the Company’s consolidated financial statements. 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. This guidance will be effective for us on January 1, 2018. The FASB has also issued the following standards which clarify ASU 2014-09 and have the same effective date as the original standard: ASU 2016-20, Technical Corrections and Improvements to Topic 606, ASU No. 2016-12, Narrow-Scope Improvements and Practical Expedients, ASU 2016-10, Identifying Performance Obligations and Licensing and ASU 2016-08, Principal versus Agent Considerations. The Company commenced its assessment of ASU 2014-09 during the first quarter of 2017. The Company is developing a project plan to guide the implementation. This project plan includes analyzing the standard’s impact on the Company’s contract portfolio, comparing historical accounting policies and practices to the requirements of the new standard and identifying potential differences from applying the requirements of the new standard to its contracts. The Company will draft an updated accounting policy, evaluate new disclosure requirements and identify and implement appropriate changes to the business processes, systems and controls to support recognition and disclosure under the new standard. The Company expects to adopt this new standard using the modified retrospective method that will result in a cumulative effect adjustment as of the date of adoption. The Company is currently evaluating this guidance and the impact it will have on the consolidated financial statements.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	6 Months Ended
	Jun. 30, 2017
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	6 Months Ended
	Jun. 30, 2017
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 June 30, Six Months Ended June 30, 2017 2016 2017 2016 Basic Earnings Per Share computation: Numerator: Net loss from continuing operations $ (185 ) $ (7,781 ) $ (1 ) $ (8,318 ) Net loss from discontinued operations $ (168 ) $ (3,292 ) $ (382 ) $ (4,211 ) Net loss $ (353 ) $ (11,073 ) $ (383 ) $ (12,529 ) Denominator: Common shares outstanding 16,534 15,979 16,437 16,149 Earnings per common share - basic Net loss from continuing operations $ (0.01 ) $ (0.49 ) $ (0.00 ) $ (0.52 ) Net loss from discontinued operations $ (0.01 ) $ (0.21 ) $ (0.02 ) $ (0.26 ) Net loss $ (0.02 ) $ (0.69 ) $ (0.02 ) $ (0.78 ) Diluted Earnings Per Share computation: Denominator: Common shares outstanding 16,534 15,979 16,437 16,149 Restricted shares subject to vesting * * * * Common stock option grants * * * * Total shares 16,534 15,979 16,437 16,149 Earnings per common share - diluted Net loss from continuing operations $ (0.01 ) $ (0.49 ) $ (0.00 ) $ (0.52 ) Net loss from discontinued operations $ (0.01 ) $ (0.21 ) $ (0.02 ) $ (0.26 ) Net loss $ (0.02 ) $ (0.69 ) $ (0.02 ) $ (0.78 ) * As denoted by “*” in the table above, the weighted average common stock option grants and restricted shares of 481,000 and 483,000 for the three and six months ended June 30, 2017, respectively, and 163,000 for the six months ended June 30, 2016, 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	6 Months Ended
	Jun. 30, 2017
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: June 30, December 31, 2017 2016 Cash $ 4,311 $ 7,507 Cash equivalents 7,564 7,348 Short-term investments 22,340 18,456 $ 34,215 $ 33,311 Cash and Cash Equivalents At June 30, 2017 and December 31, 2016, cash and cash equivalents included bank balances and investments with original maturities less than 90 days. At June 30, 2017 and December 31, 2016, the Company’s cash equivalents were invested in highly liquid AAA rated money market funds that are required to comply with Rule 2a-7 of the Investment Company Act of 1940. Such funds utilize the amortized cost method of accounting, seek to maintain a constant $1.00 per share price, and are redeemable upon demand. The Company restricts its investments in AAA money market funds to those invested 100% in either short-term U.S. government agency securities or bank repurchase agreements collateralized by these same securities. The fair values of these money market funds are established through quoted prices in active markets for identical assets (Level 1 inputs). The Company’s cash in U.S. banks is insured by the Federal Deposit Insurance Corporation up to the insurable limit of $250. At June 30, 2017, the Company had $4.3 million in cash and $7.6 million in cash equivalents, and at December 31, 2016, the Company had $7.5 million in cash and $7.3 million in cash equivalents. At June 30, 2017, the Company had in cash equivalents $5.0 million in AA rated or higher corporate bonds, $1.7 million in U.S. government agency bonds, $0.8 million in certificates of deposit, and $0.1 million in money market funds. At December 31, 2016, the Company had in cash equivalents, $3.6 million in AA rated or higher corporate bonds, $2.8 million in U.S. government agency bonds, $0.8 million in certificates of deposit, and $0.1 million in money market funds. The Company had $1.3 million and $0.9 million of cash and cash equivalents in foreign bank accounts at June 30, 2017 and December 31, 2016, respectively. With respect to the cash in foreign bank accounts, the Company had cash of $1.1 million and $0.5 million in Chinese bank accounts at June 30, 2017 and December 31, 2016, respectively. The Company ceased ongoing operations of its Israel subsidiary during the third quarter 2016. The Company expects to liquidate the subsidiary and repatriate its remaining cash during 2017. Investments At June 30, 2017 and December 31, 2016, 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 June 30, 2017, the Company had invested $7.5 million in pre-refunded municipal bonds, $6.4 million in AA rated or higher corporate bonds, $4.7 million in U.S. government agency bonds, and $3.6 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 losses were $10 and $9 at June 30, 2017 and December 31, 2016, respectively. Approximately 8% and 6% of the Company’s bond investments were protected by bond default insurance at June 30, 2017 and December 31, 2016, respectively. At December 31, 2016, the Company had invested $7.8 million in pre-refunded municipal bonds and taxable bond funds, $5.6 million in AA rated or higher corporate bond funds, $2.6 million in U.S. government agency bonds, and $2.5 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 investments measured at fair value were as follows at June 30, 2017 and December 31, 2016: June 30, 2017 December 31, 2016 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Cash equivalents: Corporate bonds $ 0 $ 4,984 $ 0 $ 4,984 $ 0 $ 3,608 $ 0 $ 3,608 US government agency bonds 0 1,700 0 1,700 0 2,846 0 2,846 Certificates of deposit 801 0 0 801 750 0 0 750 Money market funds 79 0 0 79 145 0 0 145 Investments: Corporate bonds 0 6,428 0 6,428 0 5,569 0 5,569 Pre-refunded municipal bonds 0 7,548 0 7,548 0 7,776 0 7,776 US government agency bonds 0 4,728 0 4,728 0 2,571 0 2,571 Certificates of deposit 3,626 0 0 3,626 2,530 0 0 2,530 Total $ 4,506 $ 25,388 $ 0 $ 29,894 $ 3,425 $ 22,370 $ 0 $ 25,795

Discontinued Operations

Discontinued Operations	6 Months Ended
	Jun. 30, 2017
Discontinued Operations And Disposal Groups [Abstract]
Discontinued Operations	5. Discontinued Operations During the quarter ended June 30, 2017, the Company approved a plan to sell its Network Engineering Services business (“Engineering Services”) and shift its focus towards research and development driven radio frequency (“RF”) products. The disposition met the requirements for classification as held for sale during the quarter ended June 30, 2017 because the disposition met all of the criteria outlined in the accounting guidance. Due to the significance of the results during the years ended December 31, 2016, 2015, and 2014, and because this disposition represents a strategic shift by the Company to focus on products, the disposition of Engineering Services qualifies as a discontinued operation for reporting purposes. As such, the Company reported the results of its Engineering Services business as discontinued operations for the three and six months ended June 30, 2017 and 2016, respectively. All of the revenues and cost of revenues in discontinued operations related to services. There was no impairment loss recorded on the long-lived assets because the fair value of the assets less cost to sell was higher than the carrying value of the assets. At June 30, 2017, the assets held for sale consisted of the fixed assets of $0.6 million and prepaid expenses of the business of $0.1 million. For the balance sheet at December 31, 2016, the Company reclassified the fixed assets to noncurrent assets held for sale and the prepaid expenses to current assets held for sale. There were no liabilities classified as held for sale at June 30, 2017 or December 31, 2016. The following table is a reconciliation of the assets classified as held for sale in the consolidated balance sheets. June 30, December 31, 2017 2016 Fixed assets $ 620 $ 0 Prepaid expenses and other assets 74 50 Current assets held for sale 694 50 Fixed assets 0 813 Non-current assets held for sale $ 0 $ 813 The details of the discontinued operations within the Statements of Operations are as follows: Three Months Ended Six Months Ended June 30, June 30, 2017 2016 2017 2016 Revenues $ 1,348 $ 2,935 $ 3,357 $ 4,826 Cost of revenues 1,411 2,632 3,559 4,932 Gross profit (63 ) 303 (202 ) (106 ) Operating expenses: Sales and marketing 194 324 348 575 General and administrative 13 49 26 83 Amortization of intangible assets 0 448 0 896 Impairment of intangible assets 0 4,724 0 4,724 Restructuring expenses (1 ) 2 8 324 Total operating expenses 206 5,547 382 6,602 Operating loss (269 ) (5,244 ) (584 ) (6,708 ) Benefit for income taxes (101 ) (1,952 ) (202 ) (2,497 ) Net Loss $ (168 ) $ (3,292 ) $ (382 ) $ (4,211 ) The details of the cash flows for discontinued operations are as follows: Six Months Ended June 30 . 2017 2016 Cash flows from discontinued operations: Operating Activities: Net loss $ (382 ) $ (4,211 ) Depreciation 197 272 Intangible amortization 0 896 Impairment of intangible assets 0 4,724 Deferred tax provision (202 ) (2,497 ) Stock compensation 49 152 Prepaid expenses and other assets (11 ) (26 ) Net cash (used in ) provided by operating activities $ (349 ) $ (690 ) Investing Activities: Capital expenditures $ (16 ) $ (124 ) Net cash used in investing activities $ (16 ) $ (124 ) On July 31, 2017, the Company sold substantially all of the assets of its Engineering Services business to Gabe’s Construction Co., Ltd. See Note 13 related to Subsequent Events for additional information on the sale of the business.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	6 Months Ended
	Jun. 30, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	6. Goodwill and Intangible Assets Goodwill There were no changes to goodwill during the six months ended June 30, 2017. 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 June 30, 2017. The Company will continue to monitor goodwill for impairment 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 six years. In continuing operations, amortization expense was approximately $0.3 million for the three months ended June 30, 2017 and 2016, respectively and $0.6 million for the six months ended June 30, 2017 and 2016, 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 months ended June 30, 2017 and 2016, $0.2 million of the amortization expense was included in cost of revenues. For the six months ended June 30, 2017 and 2016, $0.3 million of the amortization expense was included in cost of revenues. In discontinued operations, amortization expense was approximately $0.4 million and $0.9 million for the three and six months ended June 30, 2016, respectively. There was no amortization expense in discontinued operations for the three and six months ended June 30, 2017, respectively. The summary of other intangible assets, net is as follows: June 30, 2017 December 31, 2016 Accumulated Net Book Accumulated Net Book Cost Amortization Value Cost Amortization Value Customer contracts and relationships $ 17,380 $ 17,380 $ 0 $ 17,380 $ 17,380 $ 0 Patents and technology 10,114 8,337 1,777 10,114 8,004 2,110 Trademarks and trade names 4,960 4,286 674 4,960 4,111 849 Other 2,743 2,500 243 2,743 2,427 316 $ 35,197 $ 32,503 $ 2,694 $ 35,197 $ 31,922 $ 3,275 The $0.6 million decrease in the net book value of intangible assets at June 30, 2017 compared to December 31, 2016 relates to amortization expense for the six months ended June 30, 2017. During 2016, the Company recorded total impairment expense of $5.8 million related to customer relationships for the Engineering Services reporting unit within the RF Solutions segment, consisting of $4.7 million at June 30, 2016 and $1.1 million at December 31, 2016. At June 30, 2017, the Company decided to sell the Engineering Services reporting unit. The impairment expense is included within discontinued operations on the statement of earnings for the three and six months ended June 30, 2016. For the three months ended June 30, 2016, the revenue and contribution margin of the Engineering Services reporting unit were below its forecasts. The results and revised forecast were reflective of a long-term slowdown in the Distributed Antenna System (“DAS”) market which is the primary market addressed by the Company’s services 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 Engineering Services reporting units for impairment. The Company reviewed the intangible assets for impairment by performing a test of recoverability. The cash flow forecast prepared by the Company included assumptions for revenues, gross margins, and operating expenses. The test of recoverability failed because the undiscounted cash flows were below the carrying value of the Engineering Services reporting unit. The Company calculated the fair value of the Engineering Services reporting unit with the assistance of a third-party valuation firm. For the three months ended December 31, 2016, the revenues and contribution margin for the Engineering Services reporting unit declined sequentially. The fourth quarter 2016 gross margin was negatively impacted by the lower revenue volume and by lower average margins on individual projects. At December 31, 2016, the backlog was lower than historical trends and there were no known large projects in the sales funnel. Based on these facts and an updated review of the market and industry trends, the Company lowered its profit forecast for 2017 compared to the profit forecast prepared for the 2017 operating plan and the Company lowered its long-term revenue and profit forecast. The Company determined that the revision to the forecast for Engineering Services reporting unit was a triggering event for its review of intangible assets for impairment. The Company reviewed its intangible assets for impairment by performing a test of recoverability. The cash flow forecast prepared by the Company included assumptions for revenues, gross margins, and operating expenses. The test of recoverability failed because the undiscounted cash flows were below the carrying value of the Engineering Services reporting unit. The Company calculated the fair value of the Engineering Services reporting unit based on the valuation assumptions from the analysis prepared at June 30, 2016. The impairment charge of $1.1 million represented the remaining value of the customer relationships as of December 31, 2016. 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 5 years 5.0 Patents and technology 5 to 6 years 5.1 Trademarks and trade names 5 to 6 years 5.5 Other 1 to 6 years 3.4 The Company’s scheduled amortization expense for 2017 and the next three years is as follows: Fiscal Year Amount 2017 $ 1,162 2018 $ 1,084 2019 $ 885 2020 $ 144

Balance Sheet Information

Balance Sheet Information	6 Months Ended
	Jun. 30, 2017
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Balance Sheet Information	7. Accounts Receivable and Allowance for Doubtful Accounts Accounts receivable are recorded at invoiced amount with standard net terms that range between 30 and 90 days. The Company extends credit to its customers based on an evaluation of a customer’s financial condition and collateral is generally not required. The Company 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 at June 30, 2017 and at December 31, 2016. 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 June 30, 2017 and December 31, 2016 were composed of raw materials, sub-assemblies, finished goods and work-in-process. The Company had consigned inventory with customers of $0.6 million and $0.4 million at June 30, 2017 and December 31, 2016, 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 $3.0 million at June 30, 2017 and $2.9 million at December 31, 2016. Inventories consisted of the following: June 30, December 31, 2017 2016 Raw materials $ 8,019 $ 8,718 Work in process 1,380 1,486 Finished goods 4,384 4,238 Inventories, net $ 13,783 $ 14,442 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: June 30, December 31, 2017 2016 Building $ 6,351 $ 6,351 Computers and office equipment 11,479 10,683 Manufacturing and test equipment 12,215 11,601 Furniture and fixtures 1,244 1,225 Leasehold improvements 1,323 1,191 Motor vehicles 19 20 Total property and equipment 32,631 31,071 Less: Accumulated depreciation and amortization (22,091 ) (21,045 ) Land 1,770 1,770 Property and equipment, net $ 12,310 $ 11,796 Depreciation and amortization expense in continuing operations was approximately $0.6 million and $0.7 million for the three months ended June 30, 2017 and 2016, respectively. Depreciation and amortization expense in continuing operations was approximately $1.3 million for the six months ended June 30, 2017 and 2016, respectively. Amortization for capital leases is included in depreciation and amortization expense. See Note 10 for information related to capital leases. Liabilities Accrued liabilities consisted of the following: June 30, December 31, 2017 2016 Payroll, bonuses, and other employee benefits $ 1,659 $ 2,029 Inventory receipts 1,395 1,622 Paid time off 1,260 1,230 Warranties 421 394 Professional fees and contractors 420 320 Employee stock purchase plan 312 300 Income and sales taxes 222 546 Real estate taxes 151 152 Deferred revenues 124 104 Restructuring 46 126 Customer prepayments 25 164 Other 265 190 Total $ 6,300 $ 7,177 Long-term liabilities consisted of the following: June 30, December 31, 2017 2016 Long-term obligations under capital leases $ 220 $ 157 Deferred rent 125 156 Restructuring 92 70 Deferred revenues 35 8 Total $ 472 $ 391

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jun. 30, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	8. Stock-Based Compensation The condensed consolidated statements of operations include $1.1 million and $1.8 million of stock compensation expense for the three and six months ended June 30, 2017, respectively. Stock compensation expense for the three months ended June 30, 2017 consists of $1.1 million for service-based restricted stock awards and $48 for the Employee Stock Purchase Plan (“ESPP”) offset by for stock options net forfeitures of $13. Stock compensation expense for the six months ended June 30, 2017 consists of $1.7 million for service-based restricted stock awards, $29 for stock options and $93 for the ESPP. The condensed consolidated statements of operations include $1.4 million and $2.2 million of stock compensation expense for the three and six months ended June 30, 2016, respectively. Stock compensation expense for the three months ended June 30, 2016 consists of $0.7 million for time-based restricted stock awards, $0.4 million for shares to directors, $0.2 million for stock bonus expenses, $41 for stock option expenses and $42 for stock purchase plan expenses. Stock compensation expense for the six months ended June 30, 2016 consists of $1.4 million for time-based restricted stock awards, $0.4 million for shares to directors, $0.2 million for stock bonus expenses, $129 for stock option expenses and $89 for stock purchase plan expenses. The Company did not capitalize any stock compensation expense during the three and six months ended June 30, 2017 or 2016. Effective January 1, 2017, the Company has elected to account for forfeitures as they occur. Prior to fiscal year 2017, the Company estimated the number of stock-based awards that were expected to vest, and only recognized compensation expense for such awards. Total stock-based compensation is reflected in the condensed consolidated statements of operations as follows: Three Months Ended Six Months Ended June 30 June 30 2017 2016 2017 2016 Cost of revenues $ 72 $ 73 $ 133 $ 141 Research and development 119 175 266 342 Sales and marketing 127 161 246 301 General and administrative 770 892 1,152 1,306 Total continuing operations 1,088 1,301 1,797 2,090 Discontinued operations 28 81 49 152 Total $ 1,116 $ 1,382 $ 1,846 $ 2,242 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. During the first quarter 2017, the Company issued 285,000 service-based restricted stock awards to employees as long-term incentives that cliff vest in two years. The following table summarizes service-based restricted stock activity for the six months ended June 30, 2017: Weighted Average Grant Date Shares Fair Value Unvested Restricted Stock Awards - December 31, 2016 1,120,960 $ 5.83 Shares awarded 337,786 6.13 Shares vested (260,883 ) 6.66 Shares cancelled (32,200 ) 5.99 Unvested Restricted Stock Awards - June 30, 2017 1,165,663 $ 5.72 The intrinsic value of service-based restricted shares that vested during the three months ended June 30, 2017, and 2016, was $0.2 million and $6, respectively. The intrinsic value of service-based restricted shares that vested during the six months ended June 30, 2017, and 2016, was $1.2 million and $0.5 million, respectively. At June 30, 2017, total unrecognized compensation expense related to restricted stock was approximately $4.1 million to be recognized through 2020 over a weighted average period of 1.5 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 six months ended June 30, 2017: Weighted Average Grant Date Units Fair Value Unvested Restricted Stock Units - December 31, 2016 36,388 $ 5.57 Units awarded 5,000 5.97 Units vested (6,588 ) 6.44 Unvested Restricted Stock Units - June 30, 2017 34,800 $ 5.47 The intrinsic value of service-based restricted stock units that vested and were issued as shares during the three months ended June 30, 2017 was $17. No units vested during the three months ended June 30, 2016. As of June 30, 2017, 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 1.0 year. Stock Options The Company grants stock options to purchase common stock as long-term incentives. The exercise price of the stock options is no less than the fair value of the Company’s stock on the grant date. The stock options have a seven-year life and generally vest 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 six months ended June 30, 2017 is as follows: Weighted Average Options Exercise Outstanding Price Outstanding at December 31, 2016 825,561 $ 7.30 Exercised (94,300 ) 7.09 Expired or Cancelled (62,747 ) 8.50 Forfeited (30,901 ) 6.79 Outstanding at June 30, 2017 637,613 $ 7.24 Exercisable at June 30, 2017 611,448 $ 7.29 There were no stock options granted during the six months ended June 30, 2017. The range of exercise prices for options outstanding and exercisable at June 30, 2017, was $5.00 to $10.46. The following table summarizes information about stock options outstanding under all stock option plans: Options Outstanding Options Exercisable Weighted Average Weighted- Weighted Range of Number Contractual Life Average Number Average Exercise Prices ($) Outstanding (# Years) Exercise Price Exercisable Exercise Price $ 5.00 -- $ 6.00 19,753 5.89 $ 5.11 1,253 $ 5.87 6.01 -- 7.00 39,789 0.84 6.80 39,789 6.80 7.01 -- 8.00 524,039 2.77 7.20 521,755 7.19 8.01 -- 9.00 35,732 1.99 8.26 30,509 8.28 9.01 -- 10.00 16,900 1.20 9.62 16,742 9.62 10.01 -- 10.46 1,400 1.09 10.46 1,400 10.46 $ 5.00 -- $ 10.46 637,613 2.66 $ 7.24 611,448 $ 7.29 The weighted average contractual life and intrinsic value at June 30, 2017, was the following: Weighted Average Contractual Life (years) Intrinsic Value Options Outstanding 2.66 $ 49 Options Exercisable 2.53 $ 12 The intrinsic value is based on the share price of $7.08 at June 30, 2017. The fair value of each stock option outstanding 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. Because the Company’s employee stock options have characteristics significantly different from those of traded options, and because changes in the subjective input assumptions can materially affect the fair value estimate, the existing models may not necessarily provide a reliable single measure of the fair value of the employee stock options. In addition, option valuation models require the input of highly subjective assumptions including the expected stock price volatility and expected option life. The Company calculated the volatility based on a five-year historical period of the Company’s stock price. The expected life used for options granted was based on historical data of employee exercise performance. The 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 volatility was based on a five-year historical period of the Company’s stock price. The Company records expense based on the grading vesting method. As of June 30, 2017, the unrecognized compensation expense related to the unvested portion of the Company’s stock options was approximately $0.1 million to be recognized through 2020 over a weighted average period of 1.1 years. Performance-based Equity Awards Performance awards are restricted shares that vest if certain annual performance measures are met. The Company had 262,500 unvested performance awards at June 30, 2017. As of June 30, 2017, the Company does not expect any of these performance awards to vest. There were forfeitures of 34,000 awards during the six months ended June 30, 2017 due to employee attrition. The following table summarizes the performance-based equity activity during the six months ended June 30, 2017: Weighted Average Grant Date Units Fair Value Unvested Performance Units - December 31, 2016 296,500 $ 7.95 Units cancelled (34,000 ) 7.89 Unvested Performance Units - June 30, 2017 262,500 $ 7.95 Short-term incentive plan For the Company’s 2016 short-term incentive plan (“STIP”), executives were paid in shares of the Company’s stock. During the first quarter 2017, the Company issued 112,916 shares with a fair value of $0.6 million earned under the 2016 STIP. The Company recorded the expense during the year ended December 31, 2016. No shares were issued for the STIP during the second quarter 2017. Because all bonuses earned for the 2017 STIP will be paid in cash, there was no stock compensation expense recorded related to the STIP during the six months ended June 30, 2017. The accrual for the 2017 STIP and the cash portion of the 2016 STIP is included in the accrual for payroll, bonuses, and other employee benefits at June 30, 2017 and December 31, 2016, respectively in the liabilities section of Note 7. The Company expects to pay the 2017 STIP in March 2018. 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 72,218 shares under the ESPP in February 2017 and received proceeds of $0.4 million from the issuance of 78,415 shares under the ESPP in February 2016. 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: June 30, 2017 2016 Dividend yield 3.6 % 4.2 % 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 $0.7 million and $0.4 million during the six months ended June 30, 2017 and 2016, respectively. Stock Repurchases No shares have been repurchased during 2017. The Company repurchased 783,212 shares at an average price of $5.23 during the first quarter 2016. There are no current programs to repurchase shares.

Benefit Plans

Benefit Plans	6 Months Ended
	Jun. 30, 2017
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 Six Months Ended June 30, June 30, 2017 2016 2017 2016 PCTEL, Inc. 401(k) Profit sharing Plan - US employees $ 175 $ 165 $ 360 $ 340 Defined contribution plans - foreign employees 109 97 207 197 Total $ 284 $ 262 $ 567 $ 537

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2017
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	10. Commitments and Contingencies Restructuring The restructuring liability at June 30, 2017 and December 31, 2016 is primarily related to the Company’s exit from its Colorado office during the first quarter 2016. The restructuring liability includes the remaining obligations under the Colorado lease, net of proceeds for a sublease. The Company signed a sublease for the office space in the second quarter 2017. The Company exited from its Colorado office in order to consolidate facility space for its Engineering Services reporting unit. The restructuring expense related to the Colorado lease is included in discontinued operations in the statements of earnings for the six months ended June 30, 2017 and 2016, respectively. The restructuring liability was not held for sale at June 30, 2017. Of the $138 restructuring liability at June 30, 2017, $46 was included in accrued liabilities and $92 was included in long-term liabilities in the consolidated balance sheets. Of the $0.2 million restructuring liability at December 31, 2016, $0.1 million was included in accrued liabilities and $0.1 million was included in long-term liabilities in the consolidated balance sheets. The following table summarizes the restructuring activity during the six months ended June 30, 2017 and the status of the reserves at June 30, 2017. December 31, 2016 Expenses/ Adjustments Cash Payments/ Adjustments June 30, 2017 Severance and related employee benefits $ 6 $ (1 ) $ (5 ) $ 0 Lease terminations 190 9 (61 ) 138 Total $ 196 $ 8 $ (66 ) $ 138 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 June 30, 2017, are as follows: Year Amount 2017 $ 569 2018 1,036 2019 949 2020 364 Thereafter 28 Future minimum lease payments $ 2,946 The rent expense under leases was approximately $0.3 million and $0.2 million for the three months ended June 30, 2017, and 2016, respectively. The rent expense under leases was approximately $0.5 million for the six months ended June 30, 2017, and 2016, respectively. During the first quarter 2016, the Company exited from its Colorado office in order to consolidate facility space related to its Engineering Services reporting unit. The lease expires on October 31, 2020 and the remaining lease obligation as of June 30, 2017 was $0.4 million. In May 2017, the Company signed a sublease through the lease termination date for this property. See discussion related to the Colorado office in the restructuring section of this footnote. In June 2016, the Company entered into a new four-year lease for its Beijing Design Center and in January 2017 the Company signed a new lease for additional space at the same location. With the expansion, the Company has 11,270 square feet in its Beijing Design Center. The total lease obligation pursuant to agreement for the expansion was $0.4 million. The Beijing Design Center has an engineering department for antenna development as well as sales and marketing for the China market. In April 2017, the Company renewed the first floor space of Tianjin facility with 22,120 square feet of leased space. The total lease obligation as of June 30, 2017 pursuant to the agreement was $35 and expires on April 11, 2018 Capital Leases The Company has capital leases for office and manufacturing equipment. The net book values for assets under capital leases were as follows: June 30, 2017 December 31, 2016 Cost $ 453 $ 324 Accumulated Depreciation (149 ) (105 ) Net Book Value $ 304 $ 219 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 2017 $ 52 2018 104 2019 87 2020 47 Thereafter 47 Total minimum payments required: 337 Less amount representing interest: 24 Present value of net minimum lease payments: $ 313 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 $0.2 million at June 30, 2017 and December 31, 2016, 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 $0.4 million at June 30, 2017 and December 31, 2016, respectively, and is included in other accrued liabilities in the accompanying condensed consolidated balance sheets. Six Months Ended June 30, 2017 2016 Beginning balance $ 394 $ 348 Provisions for warranties 74 33 Consumption of reserves (47 ) (78 ) Ending balance $ 421 $ 303

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	11. Income Taxes The Company recorded an income tax benefit of $0.3 million in continuing operations for the six months ended June 30, 2017 and income tax expense of $7.0 million in continuing operations for the six months ended June 30, 2016. The benefit recorded for the six months ended June 30, 2017 differed from the statutory rate of 34% primarily due to the combination of U.S. pretax losses and foreign pretax profits taxed at lower rates. The net tax benefit for the six months ended June 30, 2017 included income tax expense of $0.2 million related to tax deficiencies with restricted stock and stock options in accordance with ASU No. 2016-09 and $0.1 million income tax benefit related to previously unrecognized tax benefits for research credits. The income tax expense for the six months ended June 30, 2016 included a $7.6 million adjustment to the valuation allowance for deferred tax assets. The Company had deferred tax assets net of deferred tax liabilities of $5.6 million and $4.5 million at June 30, 2017 and December 31, 2016, respectively, virtually all of which are related to the United States tax jurisdiction. On January 1, 2017 in accordance with the new accounting guidance for stock compensation, the Company recorded an increase of $0.7 million to deferred tax assets to account for tax benefits related to stock compensation previously unrecognized and for forfeitures previously recorded for restricted stock and stock options with a corresponding increase of $0.2 million to its valuation allowance. The adjustment to the valuation allowance was based on the same assumptions used to adjust the valuation allowance in 2016 which are still applicable for the three months ended June 30, 2017. The Company’s valuation allowance against its deferred tax assets was $13.5 million at June 30, 2017 and $13.3 million at December 31, 2016. The valuation allowance at June 30, 2017 and December 31, 2016 is primarily because the Company does not believe it will generate sufficient US taxable income to realize a significant portion of its deferred tax assets. On a regular basis, the Company evaluates the recoverability of deferred tax assets and the need for a valuation allowance. Such evaluations involve the application of significant judgment. The Company considers multiple factors in its evaluation of the need for a valuation allowance. 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 27.0 year average period over which future income can be utilized to realize the deferred tax assets. The sale of the Company’s Network Engineering business does not have a significant impact on the Company’s long-term projections for U.S. taxable income. So, there was no adjustment to the valuation allowance at June 30, 2017. During 2016, the Company adjusted the valuation allowance by $12.6 million as income tax expense. During the second quarter 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. 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 Company recorded an adjustment to the valuation allowance of $7.6 million at June 30, 2016. In the fourth quarter 2016, the Company updated its projections for its analysis to determine the valuation allowance. The Company reduced its domestic profit forecast because it lowered its long-term forecast for its services business and increased the contribution of the profits from its China subsidiary. The Company also updated its estimated tax deductions. Based on assigned probabilities to each scenario, the Company recorded an additional adjustment to the valuation allowance of $5.0 million at December 31, 2016. 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 to calculate a weighted average valuation allowance. 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 $0.7 million at June 30, 2017 and $0.9 million at December 31, 2016. The Company files a consolidated federal income tax return, income tax returns with various states, and foreign income tax returns in various foreign jurisdictions. For U.S. federal income tax purposes, 2013, 2015, and subsequent periods are subject to examination by the IRS. For state income tax purposes, 2012 and subsequent periods are generally subject to examination by various state taxing authorities.

Segment, Customer and Geographi

Segment, Customer and Geographic Information - Continuing Operations	6 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
Segment, Customer and Geographic Information - Continuing Operations	12. Segment, Customer and Geographic Information – Continuing Operations 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 other test tools. 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 in continuing operations for the three months ended June 30, 2017 and 2016, respectively, and the segment balance sheet information as of June 30, 2017 and December 31, 2016: Three Months Ended June 30, 2017 Connected Solutions RF Solutions Corporate Total REVENUES $ 16,866 $ 4,661 $ (26 ) $ 21,501 GROSS PROFIT 5,731 3,223 8 8,962 OPERATING INCOME (LOSS) FOR CONTINUING OPERATIONS $ 2,349 $ 411 $ (3,099 ) $ (339 ) Depreciation $ 425 $ 137 $ 71 $ 633 Intangible amortization $ 39 $ 252 $ 0 $ 291 Capital expenditures $ 334 $ 226 $ (66 ) $ 494 Six Months Ended June 30, 2017 Connected Solutions RF Solutions Corporate Total REVENUES $ 34,137 $ 10,418 $ (84 ) $ 44,471 GROSS PROFIT $ 11,135 $ 7,270 $ 11 $ 18,416 OPERATING INCOME (LOSS) FOR CONTINUING OPERATIONS $ 4,095 $ 1,432 $ (5,844 ) $ (317 ) Depreciation $ 852 $ 278 $ 132 $ 1,262 Intangible amortization $ 78 $ 503 $ 0 $ 581 Capital expenditures $ 844 $ 298 $ 402 $ 1,544 As of June 30, 2017 Connected Solutions RF Solutions Corporate Total Accounts receivable $ 12,773 $ 4,962 $ 0 $ 17,735 Inventories $ 11,690 $ 2,093 $ 0 $ 13,783 Current assets held for sale $ 0 $ 694 $ 0 $ 694 Long-lived assets: Property and equipment, net $ 9,908 $ 1,400 $ 1,002 $ 12,310 Goodwill $ 0 $ 3,332 $ 0 $ 3,332 Intangible assets, net $ 155 $ 2,539 $ 0 $ 2,694 Deferred tax assets, net $ 0 $ 0 $ 5,647 $ 5,647 Other noncurrent assets $ 0 $ 0 $ 83 $ 83 Three Months Ended June 30, 2016 Connected Solutions RF Solutions Corporate Total REVENUES $ 15,781 $ 5,572 $ (45 ) $ 21,308 GROSS PROFIT $ 4,941 $ 3,983 $ 10 $ 8,934 OPERATING INCOME (LOSS) FOR CONTINUING OPERATIONS $ 1,792 $ 859 $ (2,737 ) $ (86 ) Depreciation $ 468 $ 191 $ 0 $ 659 Intangible amortization $ 44 $ 700 $ 0 $ 744 Capital expenditures $ 264 $ 109 $ 320 $ 693 Six Months Ended June 30, 2016 Connected Solutions RF Solutions Corporate Total REVENUES $ 30,480 $ 10,116 $ (105 ) $ 40,491 GROSS PROFIT $ 9,265 $ 7,122 $ 7 $ 16,394 OPERATING INCOME (LOSS) FOR CONTINUING OPERATIONS $ 3,094 $ 786 $ (5,255 ) $ (1,375 ) Depreciation $ 933 $ 386 $ 0 $ 1,319 Intangible amortization $ 114 $ 504 $ 0 $ 618 Capital expenditures $ 843 $ 74 $ 351 $ 1,268 As of December 31, 2016 Connected Solutions RF Solutions Corporate Total Accounts receivable $ 12,731 $ 6,370 $ 0 $ 19,101 Inventories $ 12,301 $ 2,141 $ 0 $ 14,442 Current assets held for sale $ 0 $ 50 $ 0 $ 50 Long-lived assets: Property and equipment, net $ 9,756 $ 1,309 $ 731 $ 11,796 Goodwill $ 0 $ 3,332 $ 0 $ 3,332 Intangible assets, net $ 233 $ 3,042 $ 0 $ 3,275 Deferred tax assets, net $ 0 $ 0 $ 4,512 $ 4,512 Other noncurrent assets $ 0 $ 0 $ 36 $ 36 Non-current assets held for sale $ 0 $ 813 $ 0 $ 813 The Company’s revenue to customers by geographic location, as a percent of total revenues, is as follows: Three Months Ended Six Months Ended June 30, June 30, Region 2017 2016 2017 2016 Asia Pacific 16 % 16 % 19 % 17 % Europe, Middle East, & Africa 8 % 7 % 7 % 9 % Other Americas 6 % 6 % 5 % 6 % Total Foreign sales 30 % 29 % 31 % 32 % There was one customer that accounted for approximately 10% of revenues for the three months ended June 30, 2017 and t here were no customers that accounted 10% or greater of revenues for the three months ended June 30, 2016. No customer accounted for 10% or more of revenues for the six months ended June 30, 2017, and one customer accounted for approximately 12% of revenues for the six months ended June 30, 2016. All revenues and cost of revenues in continuing operations for the three and six months ended June 30, 2017 and 2016, respectively relate to products. All of the revenues and cost of revenues included in discontinued operations relate to services. See Note 5 for the revenues and cost of revenues in discontinued operations for three and six months ended June 30, 2017 and 2016, respectively.

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2017
Subsequent Events [Abstract]
Subsequent Events	13. Subsequent Events The Company evaluates subsequent events occurring between the most recent balance sheet date and the date that the financial statements are available to be issued in order to determine whether the subsequent events are to be recorded and/or disclosed in the Company’s financial statements and footnotes. The financial statements are considered to be available to be issued at the time that they are filed with the SEC. Other than the item mentioned below, there were no other subsequent events or transactions that required recognition or disclosure in the consolidated financial statements. On July 31, 2017 the Company sold its Network Engineering Services business to Gabe’s Construction Co., Inc. (“Gabe’s”), a Wisconsin corporation, for $1.45 million. The Company sold its fixed assets and backlog. The book value of the assets was $0.7 million at the date of closing. At closing, the Company received $1.4 million, consisting of $1.3 million for the sale of the business and $0.1 million related to future services. The Company retained working capital of approximately $0.5 million, including accounts receivable, accounts payable, and accrued liabilities. On August 1, 2017, the Company terminated 25 employees and Gabe’s hired 11 of these employees. The estimated severance and related benefits for the terminated employees is $0.2 million. The Company filed a Form 8-K related to the disposition on August 4, 2017. Subsequent to the sale, the Company will provide transition services for billing and accounts receivable collection. This transition is expected to be complete by the end of the quarter ended December 31, 2017.

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2017
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 erformance C ritical TEL ecom technology solutions to the wireless industry. PCTEL is a leading global supplier of antennas and wireless network testing solutions. PCTEL’s Connected Solutions segment designs and manufactures precision antennas. PCTEL antennas are deployed in small cells, enterprise Wi-Fi access points, fleet management and transit systems, and in network equipment and devices for the Industrial Internet of Things (“IIoT”). PCTEL’s RF Solutions segment p rovides test tools that improve the performance of wireless networks globally. Mobile operators, neutral hosts, and equipment manufacturers rely on PCTEL to analyze, design, and optimize next generation wireless networks.
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 PCTEL Connected Solutions designs and manufactures precision antennas. PCTEL antennas are deployed primarily in small cells, enterprise Wi-Fi access points, fleet management and transit systems, and in equipment and devices for the Industrial Internet of Things (“IIoT”). Revenue growth in these markets is driven by the increased use of wireless communications and increased complexity trends occurring in these markets. PCTEL antennas are primarily sold to original equipment manufacturer (“OEM”) providers where they are designed into the customer’s solution. Competition in the antenna markets addressed by Connected Solutions is fragmented. Competitors include Amphenol, Comtelco, Laird, Mobile Mark, Pulse, Radiall/Larsen, and Airgain. 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 market. These include radio frequency engineering, mobile antenna design and manufacturing, mechanical engineering, product quality and testing, and wireless network engineering. RF Solutions Segment PCTEL RF Solutions p rovides test tools to analyze, design, and optimize next generation wireless networks. Revenue growth is driven by the implementation and roll out of new wireless technology standards (i.e., 1G to 2G, 2G to 3G, 3G to 4G, 4G to 5G, etc.). PCTEL test equipment is sold directly to wireless carriers or to Competitors for PCTEL’s test tool products include OEMs such as Anritsu, Berkley Varitronics, Digital Receiver Technology, and Rohde and Schwarz. PCTEL maintains expertise in several technology areas in order to be competitive in the test tool market. These include radio frequency engineering, digital signal process (“DSP”) engineering, manufacturing, mechanical engineering, product quality and testing, and wireless network engineering.
Discontinued Operations	Discontinued Operations During the quarter ended June 30, 2017, the Company approved a plan to sell its Network Engineering Services business (“Engineering Services”) and shift its focus towards research and development driven radio frequency (”RF”) products Engineering Services is part of the RF Solutions segment. The Company classified the assets of the Network Engineering Services business unit (“Engineering Services”) as held for sale and classified the results of its operations as discontinued operations for the three and six months ended June 30, 2017 and 2016, respectively. The financial statements have been restated to reflect the historical results of Engineering Services as discontinued operations. See Note 5 in the notes to the financial statements for more information on discontinued operations. On July 31, 2017, the Company sold substantially all of the assets of the Company’s Network Engineering Services business unit to Gabe’s Construction Co., Inc. (“Gabe’s). See Note 13 related to subsequent events for additional information related to the sale to Gabe’s.
Basis of Consolidation	Basis of Consolidation The condensed consolidated balance sheet as of June 30, 2017 and the condensed consolidated statements of operations, statements of comprehensive loss, and cash flows for the three and six months ended June 30, 2017 and 2016, 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, 2016. 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, 2016 (“the 2016 Form 10-K”). There were no changes in the Company’s significant accounting policies during the three and six months ended June 30, 2017. In addition, the Company reaffirms the use of estimates in the preparation of the financial statements as set forth in the 2016 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 2016 Form 10-K. The results of operations for the period ended June 30, 2017 may not be indicative of the results for the period ending December 31, 2017.
Reclassifications	Reclassifications Certain reclassifications of the prior year’s financial statement and footnote amounts have been made to conform to the current year’s presentation.
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 losses resulting from foreign currency transactions included in other income, net were $41 and $19 for the three months ended June 30, 2017 and 2016, respectively. Net foreign exchange losses resulting from foreign currency transactions included in other income, net were $53 and $35 for the six months ended June 30, 2017 and 2016, respectively.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In January 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-04, Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment (“ASU 2017-04”). ASU 2017-04 eliminates Step 2 as part of the goodwill impairment test, the result of which is that the impairment charge recognized would now be the amount by which the carrying value exceeds the reporting unit’s fair value. The loss to be recognized cannot exceed the amount of goodwill allocated to that reporting unit. The Company early adopted this guidance on January 1, 2017 because its annual impairment test is performed after January 1, 2017. The adoption of this ASU is not expected to have a material impact on the Company's consolidated financial statements. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. This ASU addresses the following eight specific cash flow issues: Debt prepayment or debt extinguishment costs; settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing; contingent consideration payments made after a business combination; proceeds from the settlement of insurance claims; proceeds from the settlement of corporate-owned life insurance policies (including bank-owned life insurance policies); distributions received from equity method investees; beneficial interests in securitization transactions; and separately identifiable cash flows and application of the predominance principle. This guidance will be effective for us on January 1, 2018. The Company does not expect the adoption of this ASU to have a material impact on its consolidated financial statements. In June 2016, the FASB issued Accounting Standards Update No. 2016-13 ("ASU 2016-13") regarding ASC Topic 326, "Financial Instruments - Credit Losses," which modifies the measurement of expected credit losses of certain financial instruments. The amendments will be effective for us on January 1, 2020. The Company is currently evaluating this guidance and the impact it will have on its consolidated financial statements. 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. The Company adopted this ASU in the first quarter 2017. Upon adoption, the Company recognized deferred tax assets of $0.6 million for all excess tax benefits that had not been previously recognized. The Company also elected to recognize forfeitures as incurred. The Company recorded an adjustment of $0.1 million to deferred tax assets for estimated forfeitures previously recorded. These adjustments were recorded through a cumulative-effect adjustment to retained earnings of approximately $0.5 million and adjustment to the valuation allowance for $0.2 million. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which amends existing guidance to require lessees to recognize assets and liabilities on the balance sheet for the rights and obligations created by long-term leases and to disclose additional quantitative and qualitative information about leasing arrangements. This ASU also provides clarifications surrounding the presentation of the effects of leases in the income statement and statement of cash flows. This guidance will be effective for us on January 1, 2019. The Company is currently evaluating this guidance and the impact it will have on its consolidated financial statements and related disclosures. In July 2015, the FASB issued ASU No. 2015-11, Simplifying the Measurement of Inventory. ASU 2015-11 simplifies the subsequent measurement of inventory by requiring inventory to be measured at the lower of cost and net realizable value. ASU 2015-11 applies only to inventories for which cost is determined by methods other than last-in first-out and the retail inventory method. The Company adopted this guidance on January 1, 2017. The adoption of this ASU did not have a material impact to the Company’s consolidated financial statements. 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. This guidance will be effective for us on January 1, 2018. The FASB has also issued the following standards which clarify ASU 2014-09 and have the same effective date as the original standard: ASU 2016-20, Technical Corrections and Improvements to Topic 606, ASU No. 2016-12, Narrow-Scope Improvements and Practical Expedients, ASU 2016-10, Identifying Performance Obligations and Licensing and ASU 2016-08, Principal versus Agent Considerations. The Company commenced its assessment of ASU 2014-09 during the first quarter of 2017. The Company is developing a project plan to guide the implementation. This project plan includes analyzing the standard’s impact on the Company’s contract portfolio, comparing historical accounting policies and practices to the requirements of the new standard and identifying potential differences from applying the requirements of the new standard to its contracts. The Company will draft an updated accounting policy, evaluate new disclosure requirements and identify and implement appropriate changes to the business processes, systems and controls to support recognition and disclosure under the new standard. The Company expects to adopt this new standard using the modified retrospective method that will result in a cumulative effect adjustment as of the date of adoption. The Company is currently evaluating this guidance and the impact it will have on the consolidated financial statements.

Earnings per Share (Tables)

Earnings per Share (Tables)	6 Months Ended
	Jun. 30, 2017
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 June 30, Six Months Ended June 30, 2017 2016 2017 2016 Basic Earnings Per Share computation: Numerator: Net loss from continuing operations $ (185 ) $ (7,781 ) $ (1 ) $ (8,318 ) Net loss from discontinued operations $ (168 ) $ (3,292 ) $ (382 ) $ (4,211 ) Net loss $ (353 ) $ (11,073 ) $ (383 ) $ (12,529 ) Denominator: Common shares outstanding 16,534 15,979 16,437 16,149 Earnings per common share - basic Net loss from continuing operations $ (0.01 ) $ (0.49 ) $ (0.00 ) $ (0.52 ) Net loss from discontinued operations $ (0.01 ) $ (0.21 ) $ (0.02 ) $ (0.26 ) Net loss $ (0.02 ) $ (0.69 ) $ (0.02 ) $ (0.78 ) Diluted Earnings Per Share computation: Denominator: Common shares outstanding 16,534 15,979 16,437 16,149 Restricted shares subject to vesting * * * * Common stock option grants * * * * Total shares 16,534 15,979 16,437 16,149 Earnings per common share - diluted Net loss from continuing operations $ (0.01 ) $ (0.49 ) $ (0.00 ) $ (0.52 ) Net loss from discontinued operations $ (0.01 ) $ (0.21 ) $ (0.02 ) $ (0.26 ) Net loss $ (0.02 ) $ (0.69 ) $ (0.02 ) $ (0.78 ) * As denoted by “*” in the table above, the weighted average common stock option grants and restricted shares of 481,000 and 483,000 for the three and six months ended June 30, 2017, respectively, and 163,000 for the six months ended June 30, 2016, were excluded from the calculations of diluted net loss per share since their effects are anti-dilutive.

Cash, Cash Equivalents and In23

Cash, Cash Equivalents and Investments (Tables)	6 Months Ended
	Jun. 30, 2017
Cash And Cash Equivalents [Abstract]
Cash and Cash Equivalents and Investments	The Company’s cash and investments consisted of the following: June 30, December 31, 2017 2016 Cash $ 4,311 $ 7,507 Cash equivalents 7,564 7,348 Short-term investments 22,340 18,456 $ 34,215 $ 33,311
Cash Equivalents and Investments Measured at Fair Value	Cash equivalents and investments measured at fair value were as follows at June 30, 2017 and December 31, 2016: June 30, 2017 December 31, 2016 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Cash equivalents: Corporate bonds $ 0 $ 4,984 $ 0 $ 4,984 $ 0 $ 3,608 $ 0 $ 3,608 US government agency bonds 0 1,700 0 1,700 0 2,846 0 2,846 Certificates of deposit 801 0 0 801 750 0 0 750 Money market funds 79 0 0 79 145 0 0 145 Investments: Corporate bonds 0 6,428 0 6,428 0 5,569 0 5,569 Pre-refunded municipal bonds 0 7,548 0 7,548 0 7,776 0 7,776 US government agency bonds 0 4,728 0 4,728 0 2,571 0 2,571 Certificates of deposit 3,626 0 0 3,626 2,530 0 0 2,530 Total $ 4,506 $ 25,388 $ 0 $ 29,894 $ 3,425 $ 22,370 $ 0 $ 25,795

Discontinued Operations (Tables

Discontinued Operations (Tables)	6 Months Ended
	Jun. 30, 2017
Discontinued Operations And Disposal Groups [Abstract]
Schedule of Reconciliation of Assets Classified as Held for Sale in Consolidated Balance Sheets	The following table is a reconciliation of the assets classified as held for sale in the consolidated balance sheets. June 30, December 31, 2017 2016 Fixed assets $ 620 $ 0 Prepaid expenses and other assets 74 50 Current assets held for sale 694 50 Fixed assets 0 813 Non-current assets held for sale $ 0 $ 813
Schedule of Discontinue Operations within Statement of Operations	The details of the discontinued operations within the Statements of Operations are as follows: Three Months Ended Six Months Ended June 30, June 30, 2017 2016 2017 2016 Revenues $ 1,348 $ 2,935 $ 3,357 $ 4,826 Cost of revenues 1,411 2,632 3,559 4,932 Gross profit (63 ) 303 (202 ) (106 ) Operating expenses: Sales and marketing 194 324 348 575 General and administrative 13 49 26 83 Amortization of intangible assets 0 448 0 896 Impairment of intangible assets 0 4,724 0 4,724 Restructuring expenses (1 ) 2 8 324 Total operating expenses 206 5,547 382 6,602 Operating loss (269 ) (5,244 ) (584 ) (6,708 ) Benefit for income taxes (101 ) (1,952 ) (202 ) (2,497 ) Net Loss $ (168 ) $ (3,292 ) $ (382 ) $ (4,211 )
Schedule of Cash Flows for Discontinue Operations	The details of the cash flows for discontinued operations are as follows: Six Months Ended June 30 . 2017 2016 Cash flows from discontinued operations: Operating Activities: Net loss $ (382 ) $ (4,211 ) Depreciation 197 272 Intangible amortization 0 896 Impairment of intangible assets 0 4,724 Deferred tax provision (202 ) (2,497 ) Stock compensation 49 152 Prepaid expenses and other assets (11 ) (26 ) Net cash (used in ) provided by operating activities $ (349 ) $ (690 ) Investing Activities: Capital expenditures $ (16 ) $ (124 ) Net cash used in investing activities $ (16 ) $ (124 )

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Other Intangible Assets	The summary of other intangible assets, net is as follows: June 30, 2017 December 31, 2016 Accumulated Net Book Accumulated Net Book Cost Amortization Value Cost Amortization Value Customer contracts and relationships $ 17,380 $ 17,380 $ 0 $ 17,380 $ 17,380 $ 0 Patents and technology 10,114 8,337 1,777 10,114 8,004 2,110 Trademarks and trade names 4,960 4,286 674 4,960 4,111 849 Other 2,743 2,500 243 2,743 2,427 316 $ 35,197 $ 32,503 $ 2,694 $ 35,197 $ 31,922 $ 3,275
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 5 years 5.0 Patents and technology 5 to 6 years 5.1 Trademarks and trade names 5 to 6 years 5.5 Other 1 to 6 years 3.4
Schedule of Expected Amortization Expense	The Company’s scheduled amortization expense for 2017 and the next three years is as follows: Fiscal Year Amount 2017 $ 1,162 2018 $ 1,084 2019 $ 885 2020 $ 144

Balance Sheet Information (Tabl

Balance Sheet Information (Tables)	6 Months Ended
	Jun. 30, 2017
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Summary of Inventories	Inventories consisted of the following: June 30, December 31, 2017 2016 Raw materials $ 8,019 $ 8,718 Work in process 1,380 1,486 Finished goods 4,384 4,238 Inventories, net $ 13,783 $ 14,442
Summary of Property and Equipment	Property and equipment consisted of the following: June 30, December 31, 2017 2016 Building $ 6,351 $ 6,351 Computers and office equipment 11,479 10,683 Manufacturing and test equipment 12,215 11,601 Furniture and fixtures 1,244 1,225 Leasehold improvements 1,323 1,191 Motor vehicles 19 20 Total property and equipment 32,631 31,071 Less: Accumulated depreciation and amortization (22,091 ) (21,045 ) Land 1,770 1,770 Property and equipment, net $ 12,310 $ 11,796
Summary of Accrued Liabilities	Accrued liabilities consisted of the following: June 30, December 31, 2017 2016 Payroll, bonuses, and other employee benefits $ 1,659 $ 2,029 Inventory receipts 1,395 1,622 Paid time off 1,260 1,230 Warranties 421 394 Professional fees and contractors 420 320 Employee stock purchase plan 312 300 Income and sales taxes 222 546 Real estate taxes 151 152 Deferred revenues 124 104 Restructuring 46 126 Customer prepayments 25 164 Other 265 190 Total $ 6,300 $ 7,177
Summary of Long-term Liabilities	Long-term liabilities consisted of the following: June 30, December 31, 2017 2016 Long-term obligations under capital leases $ 220 $ 157 Deferred rent 125 156 Restructuring 92 70 Deferred revenues 35 8 Total $ 472 $ 391

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2017
Stock-Based Compensation	The Company did not capitalize any stock compensation expense during the three and six months ended June 30, 2017 or 2016. Effective January 1, 2017, the Company has elected to account for forfeitures as they occur. Prior to fiscal year 2017, the Company estimated the number of stock-based awards that were expected to vest, and only recognized compensation expense for such awards. Total stock-based compensation is reflected in the condensed consolidated statements of operations as follows: Three Months Ended Six Months Ended June 30 June 30 2017 2016 2017 2016 Cost of revenues $ 72 $ 73 $ 133 $ 141 Research and development 119 175 266 342 Sales and marketing 127 161 246 301 General and administrative 770 892 1,152 1,306 Total continuing operations 1,088 1,301 1,797 2,090 Discontinued operations 28 81 49 152 Total $ 1,116 $ 1,382 $ 1,846 $ 2,242
Summary of Stock Option Activity	A summary of the Company’s stock option activity for the six months ended June 30, 2017 is as follows: Weighted Average Options Exercise Outstanding Price Outstanding at December 31, 2016 825,561 $ 7.30 Exercised (94,300 ) 7.09 Expired or Cancelled (62,747 ) 8.50 Forfeited (30,901 ) 6.79 Outstanding at June 30, 2017 637,613 $ 7.24 Exercisable at June 30, 2017 611,448 $ 7.29
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 $ 5.00 -- $ 6.00 19,753 5.89 $ 5.11 1,253 $ 5.87 6.01 -- 7.00 39,789 0.84 6.80 39,789 6.80 7.01 -- 8.00 524,039 2.77 7.20 521,755 7.19 8.01 -- 9.00 35,732 1.99 8.26 30,509 8.28 9.01 -- 10.00 16,900 1.20 9.62 16,742 9.62 10.01 -- 10.46 1,400 1.09 10.46 1,400 10.46 $ 5.00 -- $ 10.46 637,613 2.66 $ 7.24 611,448 $ 7.29
Weighted Average Contractual Life and Intrinsic Value of the Options Outstanding	The weighted average contractual life and intrinsic value at June 30, 2017, was the following: Weighted Average Contractual Life (years) Intrinsic Value Options Outstanding 2.66 $ 49 Options Exercisable 2.53 $ 12
Summary of Performance Share Equity Activity	The following table summarizes the performance-based equity activity during the six months ended June 30, 2017: Weighted Average Grant Date Units Fair Value Unvested Performance Units - December 31, 2016 296,500 $ 7.95 Units cancelled (34,000 ) 7.89 Unvested Performance Units - June 30, 2017 262,500 $ 7.95
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: June 30, 2017 2016 Dividend yield 3.6 % 4.2 % 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 six months ended June 30, 2017: Weighted Average Grant Date Shares Fair Value Unvested Restricted Stock Awards - December 31, 2016 1,120,960 $ 5.83 Shares awarded 337,786 6.13 Shares vested (260,883 ) 6.66 Shares cancelled (32,200 ) 5.99 Unvested Restricted Stock Awards - June 30, 2017 1,165,663 $ 5.72
Restricted Stock Units [Member]
Summary of Service-based Restricted Stock Activity	The following table summarizes the restricted stock unit activity during the six months ended June 30, 2017: Weighted Average Grant Date Units Fair Value Unvested Restricted Stock Units - December 31, 2016 36,388 $ 5.57 Units awarded 5,000 5.97 Units vested (6,588 ) 6.44 Unvested Restricted Stock Units - June 30, 2017 34,800 $ 5.47

Benefit Plans (Tables)

Benefit Plans (Tables)	6 Months Ended
	Jun. 30, 2017
Compensation And Retirement Disclosure [Abstract]
Summary of Contributions to Retirement Plans	The Company’s contributions to retirement plans were as follows: Three Months Ended Six Months Ended June 30, June 30, 2017 2016 2017 2016 PCTEL, Inc. 401(k) Profit sharing Plan - US employees $ 175 $ 165 $ 360 $ 340 Defined contribution plans - foreign employees 109 97 207 197 Total $ 284 $ 262 $ 567 $ 537

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2017
Commitments And Contingencies Disclosure [Abstract]
Summary of Restructuring Activity	The following table summarizes the restructuring activity during the six months ended June 30, 2017 and the status of the reserves at June 30, 2017. December 31, 2016 Expenses/ Adjustments Cash Payments/ Adjustments June 30, 2017 Severance and related employee benefits $ 6 $ (1 ) $ (5 ) $ 0 Lease terminations 190 9 (61 ) 138 Total $ 196 $ 8 $ (66 ) $ 138
Future Minimum Rental Payments Under Operating Leases	The future minimum rental payments under these leases at June 30, 2017, are as follows: Year Amount 2017 $ 569 2018 1,036 2019 949 2020 364 Thereafter 28 Future minimum lease payments $ 2,946
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: June 30, 2017 December 31, 2016 Cost $ 453 $ 324 Accumulated Depreciation (149 ) (105 ) Net Book Value $ 304 $ 219
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 2017 $ 52 2018 104 2019 87 2020 47 Thereafter 47 Total minimum payments required: 337 Less amount representing interest: 24 Present value of net minimum lease payments: $ 313
Changes in Warranty Reserves	Six Months Ended June 30, 2017 2016 Beginning balance $ 394 $ 348 Provisions for warranties 74 33 Consumption of reserves (47 ) (78 ) Ending balance $ 421 $ 303

Segment, Customer and Geograp30

Segment, Customer and Geographic Information - Continuing Operations (Tables)	6 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
Result of Operations by Segments	The following tables are the segment operating profits and cash flow information in continuing operations for the three months ended June 30, 2017 and 2016, respectively, and the segment balance sheet information as of June 30, 2017 and December 31, 2016: Three Months Ended June 30, 2017 Connected Solutions RF Solutions Corporate Total REVENUES $ 16,866 $ 4,661 $ (26 ) $ 21,501 GROSS PROFIT 5,731 3,223 8 8,962 OPERATING INCOME (LOSS) FOR CONTINUING OPERATIONS $ 2,349 $ 411 $ (3,099 ) $ (339 ) Depreciation $ 425 $ 137 $ 71 $ 633 Intangible amortization $ 39 $ 252 $ 0 $ 291 Capital expenditures $ 334 $ 226 $ (66 ) $ 494 Six Months Ended June 30, 2017 Connected Solutions RF Solutions Corporate Total REVENUES $ 34,137 $ 10,418 $ (84 ) $ 44,471 GROSS PROFIT $ 11,135 $ 7,270 $ 11 $ 18,416 OPERATING INCOME (LOSS) FOR CONTINUING OPERATIONS $ 4,095 $ 1,432 $ (5,844 ) $ (317 ) Depreciation $ 852 $ 278 $ 132 $ 1,262 Intangible amortization $ 78 $ 503 $ 0 $ 581 Capital expenditures $ 844 $ 298 $ 402 $ 1,544 Three Months Ended June 30, 2016 Connected Solutions RF Solutions Corporate Total REVENUES $ 15,781 $ 5,572 $ (45 ) $ 21,308 GROSS PROFIT $ 4,941 $ 3,983 $ 10 $ 8,934 OPERATING INCOME (LOSS) FOR CONTINUING OPERATIONS $ 1,792 $ 859 $ (2,737 ) $ (86 ) Depreciation $ 468 $ 191 $ 0 $ 659 Intangible amortization $ 44 $ 700 $ 0 $ 744 Capital expenditures $ 264 $ 109 $ 320 $ 693 Six Months Ended June 30, 2016 Connected Solutions RF Solutions Corporate Total REVENUES $ 30,480 $ 10,116 $ (105 ) $ 40,491 GROSS PROFIT $ 9,265 $ 7,122 $ 7 $ 16,394 OPERATING INCOME (LOSS) FOR CONTINUING OPERATIONS $ 3,094 $ 786 $ (5,255 ) $ (1,375 ) Depreciation $ 933 $ 386 $ 0 $ 1,319 Intangible amortization $ 114 $ 504 $ 0 $ 618 Capital expenditures $ 843 $ 74 $ 351 $ 1,268
Assets by Segment	The following tables are the segment operating profits and cash flow information in continuing operations for the three months ended June 30, 2017 and 2016, respectively, and the segment balance sheet information as of June 30, 2017 and December 31, 2016: As of June 30, 2017 Connected Solutions RF Solutions Corporate Total Accounts receivable $ 12,773 $ 4,962 $ 0 $ 17,735 Inventories $ 11,690 $ 2,093 $ 0 $ 13,783 Current assets held for sale $ 0 $ 694 $ 0 $ 694 Long-lived assets: Property and equipment, net $ 9,908 $ 1,400 $ 1,002 $ 12,310 Goodwill $ 0 $ 3,332 $ 0 $ 3,332 Intangible assets, net $ 155 $ 2,539 $ 0 $ 2,694 Deferred tax assets, net $ 0 $ 0 $ 5,647 $ 5,647 Other noncurrent assets $ 0 $ 0 $ 83 $ 83 As of December 31, 2016 Connected Solutions RF Solutions Corporate Total Accounts receivable $ 12,731 $ 6,370 $ 0 $ 19,101 Inventories $ 12,301 $ 2,141 $ 0 $ 14,442 Current assets held for sale $ 0 $ 50 $ 0 $ 50 Long-lived assets: Property and equipment, net $ 9,756 $ 1,309 $ 731 $ 11,796 Goodwill $ 0 $ 3,332 $ 0 $ 3,332 Intangible assets, net $ 233 $ 3,042 $ 0 $ 3,275 Deferred tax assets, net $ 0 $ 0 $ 4,512 $ 4,512 Other noncurrent assets $ 0 $ 0 $ 36 $ 36 Non-current assets held for sale $ 0 $ 813 $ 0 $ 813
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 Six Months Ended June 30, June 30, Region 2017 2016 2017 2016 Asia Pacific 16 % 16 % 19 % 17 % Europe, Middle East, & Africa 8 % 7 % 7 % 9 % Other Americas 6 % 6 % 5 % 6 % Total Foreign sales 30 % 29 % 31 % 32 %

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Detail)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2017USD ($)Segment	Jun. 30, 2016USD ($)	Dec. 31, 2016USD ($)
Nature Of Operations [Line Items]
Number of operating segments | Segment			2
Net foreign exchange losses resulting from foreign currency transactions included in other income	$ 41,000	$ 19,000	$ 53,000	$ 35,000
Cumulative-effect adjustment to retained earnings					$ 510,000
Adjustments of deferred tax assets	13,500,000		13,500,000		13,300,000
Adjustments of deferred tax valuation allowance			0	$ 7,600,000	12,600,000
Retained Earnings [Member]
Nature Of Operations [Line Items]
Cumulative-effect adjustment to retained earnings					$ 510,000
ASU No. 2016-09 [Member]
Nature Of Operations [Line Items]
Deferred tax assets	600,000		600,000
Adjustments of deferred tax assets	100,000		100,000
Adjustments of deferred tax valuation allowance			200,000
ASU No. 2016-09 [Member] | Retained Earnings [Member]
Nature Of Operations [Line Items]
Cumulative-effect adjustment to retained earnings	$ 500,000		$ 500,000

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		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Numerator:
Net loss from continuing operations	$ (185)	$ (7,781)	$ (1)	$ (8,318)
Net loss from discontinued operations	(168)	(3,292)	(382)	(4,211)
Net loss	$ (353)	$ (11,073)	$ (383)	$ (12,529)
Denominator:
Common shares outstanding	16,534	15,979	16,437	16,149
Earnings per common share - basic
Net loss from continuing operations	$ (0.01)	$ (0.49)	$ 0	$ (0.52)
Net loss from discontinued operations	(0.01)	(0.21)	(0.02)	(0.26)
Net loss	$ (0.02)	$ (0.69)	$ (0.02)	$ (0.78)
Denominator:
Common shares outstanding	16,534	15,979	16,437	16,149
Total shares	16,534	15,979	16,437	16,149
Earnings per common share - diluted
Net loss from continuing operations	$ (0.01)	$ (0.49)	$ 0	$ (0.52)
Net loss from discontinued operations	(0.01)	(0.21)	(0.02)	(0.26)
Net loss	$ (0.02)	$ (0.69)	$ (0.02)	$ (0.78)

Earnings per Share - Computat33

Earnings per Share - Computation of Basic and Diluted Earnings Per Share (Parenthetical) (Detail) - shares	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share [Abstract]
Antidilutive shares excluded	481,000,000	483,000,000	163,000,000

Cash, Cash Equivalents and In34

Cash, Cash Equivalents and Investments - Cash and Cash Equivalents and Investments (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Cash And Cash Equivalents [Abstract]
Cash	$ 4,311	$ 7,507
Cash equivalents	7,564	7,348
Short-term investments	22,340	18,456
Cash and investments	$ 34,215	$ 33,311

Cash, Cash Equivalents and In35

Cash, Cash Equivalents and Investments - Additional Information (Detail) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents maturities	90 days	90 days
Investment of cash equivalents are redeemable upon demand using amortized cost method	$ 1
Investment in money market funds restricted by investment in short term securities, percentage	100.00%
Cash	$ 4,311,000	$ 7,507,000
Cash equivalents	7,564,000	7,348,000
Cash and cash equivalents in foreign bank	1,300,000	900,000
Short-term investments	$ 22,340,000	18,456,000
Short-term investments, maturities	90 days
Net unrealized gains (losses)	$ 10,000	$ 9,000
Percentage of investment in bond protected by bond default insurance	8.00%	6.00%
Corporate Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	$ 5,000,000	$ 3,600,000
Short-term investments	6,400,000	5,600,000
U.S. Government Agency Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	1,700,000	2,800,000
Short-term investments	4,700,000	2,600,000
Certificates of Deposit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	800,000	800,000
Short-term investments	3,600,000	2,500,000
Money Market Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	100,000	100,000
Pre-refunded Municipal Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	7,500,000	7,800,000
Chinese [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash in foreign bank	1,100,000	$ 500,000
Maximum [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Federal Deposit Insurance Corporation insured limit	$ 250,000

Cash, Cash Equivalents and In36

Cash, Cash Equivalents and Investments - Cash Equivalents and Investments Measured at Fair Value (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total	$ 29,894	$ 25,795
Corporate Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	4,984	3,608
Investments	6,428	5,569
U.S. Government Agency Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	1,700	2,846
Investments	4,728	2,571
Certificates of Deposit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	801	750
Investments	3,626	2,530
Money Market Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	79	145
Pre-refunded Municipal Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	7,548	7,776
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total	4,506	3,425
Level 1 [Member] | Corporate Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Investments	0	0
Level 1 [Member] | U.S. Government Agency Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Investments	0	0
Level 1 [Member] | Certificates of Deposit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	801	750
Investments	3,626	2,530
Level 1 [Member] | Money Market Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	79	145
Level 1 [Member] | Pre-refunded Municipal Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	0	0
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total	25,388	22,370
Level 2 [Member] | Corporate Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	4,984	3,608
Investments	6,428	5,569
Level 2 [Member] | U.S. Government Agency Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	1,700	2,846
Investments	4,728	2,571
Level 2 [Member] | Certificates of Deposit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Investments	0	0
Level 2 [Member] | Money Market Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Level 2 [Member] | Pre-refunded Municipal Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	7,548	7,776
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total	0	0
Level 3 [Member] | Corporate Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Investments	0	0
Level 3 [Member] | U.S. Government Agency Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Investments	0	0
Level 3 [Member] | Certificates of Deposit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Investments	0	0
Level 3 [Member] | Money Market Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Level 3 [Member] | Pre-refunded Municipal Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	$ 0	$ 0

Discontinued Operations - Addit

Discontinued Operations - Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Fixed assets held for sale	$ 0	$ 813,000
Engineering Services [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Impairment loss recorded on long-lived assets	0
Fixed assets held for sale	600,000
Prepaid expenses related to current assets held for sale	100,000
Liabilities classified as held for sale	$ 0	$ 0

Discontinued Operations - Sched

Discontinued Operations - Schedule of Reconciliation of Assets Classified as Held for Sale in Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Disposal Group Including Discontinued Operation Balance Sheet Disclosures [Abstract]
Fixed assets	$ 620	$ 0
Prepaid expenses and other assets	74	50
Current assets held for sale	694	50
Fixed assets	0	813
Non-current assets held for sale	$ 0	$ 813

Discontinued Operations - Sch39

Discontinued Operations - Schedule of Discontinued Operations within Statement of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Discontinued Operations And Disposal Groups [Abstract]
Revenues	$ 1,348	$ 2,935	$ 3,357	$ 4,826
Cost of revenues	1,411	2,632	3,559	4,932
Gross profit	(63)	303	(202)	(106)
Operating expenses:
Sales and marketing	194	324	348	575
General and administrative	13	49	26	83
Amortization of intangible assets	0	448	0	896
Impairment of intangible assets	0	4,724	0	4,724
Restructuring expenses	(1)	2	8	324
Total operating expenses	206	5,547	382	6,602
Operating loss	(269)	(5,244)	(584)	(6,708)
Benefit for income taxes	(101)	(1,952)	(202)	(2,497)
Net Loss	$ (168)	$ (3,292)	$ (382)	$ (4,211)

Discontinued Operations - Sch40

Discontinued Operations - Schedule of Cash Flows for Discontinued Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Operating Activities:
Net loss	$ (168)	$ (3,292)	$ (382)	$ (4,211)
Depreciation			197	272
Intangible amortization	0	448	0	896
Impairment of intangible assets	$ 0	$ 4,724	0	4,724
Deferred tax provision			(202)	(2,497)
Stock compensation			49	152
Prepaid expenses and other assets			(11)	(26)
Net cash (used in ) provided by operating activities			(349)	(690)
Investing Activities:
Capital expenditures			(16)	(124)
Net cash used in investing activities			$ (16)	$ (124)

Goodwill and Intangible Asset41

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended			12 Months Ended
	Feb. 28, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2016
Finite Lived Intangible Assets [Line Items]
Change in goodwill				$ 0
Amortization of intangible assets		$ 291,000	$ 744,000	581,000		$ 618,000
Increase (decrease) in cost of intangible assets				$ 600,000
Customer Contracts and Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets basis over estimated useful lives				5 years
RF Solutions [Member] | Customer Contracts and Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Impairment of intangible assets					$ 1,100,000	4,700,000	$ 5,800,000
Continuing Operations [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets		300,000	300,000	$ 600,000		600,000
Discontinued Operations [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets		0	400,000	0		900,000
Cost of Revenues [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets		$ 200,000	$ 200,000	$ 300,000		$ 300,000
Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets basis over estimated useful lives				1 year
Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets basis over estimated useful lives				6 years
Nexgen Wireless, Inc. [Member]
Finite Lived Intangible Assets [Line Items]
Goodwill acquired	$ 3,300,000

Goodwill and Intangible Asset42

Goodwill and Intangible Assets - Summary of Other Intangible Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Finite Lived Intangible Assets [Line Items]
Cost	$ 35,197	$ 35,197
Accumulated Amortization	32,503	31,922
Net Book Value	2,694	3,275
Customer Contracts and Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Cost	17,380	17,380
Accumulated Amortization	17,380	17,380
Net Book Value	0	0
Patents and Technology [Member]
Finite Lived Intangible Assets [Line Items]
Cost	10,114	10,114
Accumulated Amortization	8,337	8,004
Net Book Value	1,777	2,110
Trademarks and Trade Names [Member]
Finite Lived Intangible Assets [Line Items]
Cost	4,960	4,960
Accumulated Amortization	4,286	4,111
Net Book Value	674	849
Other [Member]
Finite Lived Intangible Assets [Line Items]
Cost	2,743	2,743
Accumulated Amortization	2,500	2,427
Net Book Value	$ 243	$ 316

Goodwill and Intangible Asset43

Goodwill and Intangible Assets - Summary of Assigned Lives and Weighted Average Amortization Periods by Intangible Asset Category (Detail)	6 Months Ended
	Jun. 30, 2017
Minimum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	1 year
Maximum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	6 years
Customer Contracts and Relationships [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	5 years
Weighted Average Amortization Period	5 years
Patents and Technology [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Weighted Average Amortization Period	5 years 1 month 6 days
Patents and Technology [Member] | Minimum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	5 years
Patents and Technology [Member] | Maximum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	6 years
Trademarks and Trade Names [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Weighted Average Amortization Period	5 years 6 months
Trademarks and Trade Names [Member] | Minimum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	5 years
Trademarks and Trade Names [Member] | Maximum [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Assigned Life	6 years
Other [Member]
Summary of assigned lives and weighted average amortization periods by intangible asset category
Weighted Average Amortization Period	3 years 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 Asset44

Goodwill and Intangible Assets - Schedule of Expected Amortization Expense (Detail) $ in Thousands	Jun. 30, 2017USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2,017	$ 1,162
2,018	1,084
2,019	885
2,020	$ 144

Balance Sheet Information - Add

Balance Sheet Information - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Allowance for doubtful accounts	$ 257		$ 257		$ 273
Consigned inventory with customers	600		600		400
Allowance for inventory losses	3,000		3,000		$ 2,900
Depreciation and amortization expense in continuing operations	$ 600	$ 700	$ 1,300	$ 1,300
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			90 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	Jun. 30, 2017	Dec. 31, 2016
Inventory Net [Abstract]
Raw materials	$ 8,019	$ 8,718
Work in process	1,380	1,486
Finished goods	4,384	4,238
Inventories, net	$ 13,783	$ 14,442

Balance Sheet Information - S47

Balance Sheet Information - Summary of Property and Equipment (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 32,631	$ 31,071
Less: Accumulated depreciation and amortization	(22,091)	(21,045)
Land	1,770	1,770
Property and equipment, net	12,310	11,796
Building [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	6,351	6,351
Computers and Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	11,479	10,683
Manufacturing and Test Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	12,215	11,601
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	1,244	1,225
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	1,323	1,191
Motor Vehicles [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 19	$ 20

Balance Sheet Information - S48

Balance Sheet Information - Summary of Accrued Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Payables And Accruals [Abstract]
Payroll, bonuses, and other employee benefits	$ 1,659	$ 2,029
Inventory receipts	1,395	1,622
Paid time off	1,260	1,230
Warranties	421	394
Professional fees and contractors	420	320
Employee stock purchase plan	312	300
Income and sales taxes	222	546
Real estate taxes	151	152
Deferred revenues	124	104
Restructuring	46	126
Customer prepayments	25	164
Other	265	190
Total	$ 6,300	$ 7,177

Balance Sheet Information - S49

Balance Sheet Information - Summary of Long-term Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Liabilities Noncurrent [Abstract]
Long-term obligations under capital leases	$ 220	$ 157
Deferred rent	125	156
Restructuring	92	70
Deferred revenues	35	8
Total	$ 472	$ 391

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	$ 1,100	$ 1,400	$ 1,800	$ 2,200
Director Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense		400		400
Service Based Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	1,100		1,700
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	13	41	29	129
Employee Stock Purchase Plan ("ESPP") [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	$ 48		$ 93
Time-Based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense		700		1,400
Stock Bonus Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense		200		200
Stock Purchase Plan Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense		$ 42		$ 89

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock-Based Compensation (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	$ 1,116	$ 1,382	$ 1,846	$ 2,242
Continuing Operations [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	1,088	1,301	1,797	2,090
Discontinued Operations [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	28	81	49	152
Cost of Revenues [Member] | Continuing Operations [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	72	73	133	141
Research and Development [Member] | Continuing Operations [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	119	175	266	342
Sales and Marketing [Member] | Continuing Operations [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	127	161	246	301
General and Administrative [Member] | Continuing Operations [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	$ 770	$ 892	$ 1,152	$ 1,306

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			6 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants vesting period				4 years
Stock awards issued during the period		285,000
Restricted shares vested grant date intrinsic value	$ 200		$ 6	$ 1,200	$ 500
Unrecognized compensation expense	$ 4,100			$ 4,100
Weighted average period				1 year 6 months
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants vesting period		2 years

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Service-based Restricted Stock Activity (Detail) - Restricted Stock [Member]	6 Months Ended
	Jun. 30, 2017$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning balance, Shares | shares	1,120,960
Units awarded, Shares | shares	337,786
Units vested, Shares | shares	(260,883)
Units cancelled, Shares | shares	(32,200)
Ending balance, Shares | shares	1,165,663
Beginning balance, Weighted Average Grant Date Fair Value | $ / shares	$ 5.83
Shares awarded, Weighted Average Grant Date Fair Value | $ / shares	6.13
Shares vested, Weighted Average Grant Date Fair Value | $ / shares	6.66
Shares cancelled, Weighted Average Grant Date Fair Value | $ / shares	5.99
Ending balance, Weighted Average Grant Date Fair Value | $ / shares	$ 5.72

Stock-Based Compensation - Su54

Stock-Based Compensation - Summary of Restricted Stock Unit Activity (Detail) - Restricted Stock Units [Member]	6 Months Ended
	Jun. 30, 2017$ / sharesshares
Schedule Of Summary Of Restricted Stock Unit Activity [Line Items]
Beginning balance, Shares | shares	36,388
Units awarded, Units | shares	5,000
Units vested, Units | shares	(6,588)
Ending balance, Shares | shares	34,800
Beginning balance, Weighted Average Grant Date Fair Value | $ / shares	$ 5.57
Units awarded, Weighted Average Grant Date Fair Value | $ / shares	5.97
Units vested, Weighted Average Grant Date Fair Value | $ / shares	6.44
Ending balance, Weighted Average Grant Date Fair Value | $ / shares	$ 5.47

Stock-Based Compensation - Re55

Stock-Based Compensation - Restricted Stock Units - Service-Based - Additional Information (Detail) - Service Based Restricted Stock Units [Member] - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares vested intrinsic value	$ 17,000	$ 0	$ 23,000	$ 10,000
Unrecognized compensation expense	$ 100,000		$ 100,000
Weighted average period			1 year

Stock-Based Compensation - St56

Stock-Based Compensation - Stock Options - Additional Information (Detail) $ / shares in Units, $ in Millions	6 Months Ended
	Jun. 30, 2017USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value based on share price	$ 7.08
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock options vesting provisions, description	The stock options have a seven-year life and generally vest 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
Options granted | shares	0
Lower range of exercise prices	$ 5
Upper range of exercise prices	$ 10.46
Period of expected life, options granted	5 years
Unrecognized compensation expense | $	$ 0.1
Weighted average period	1 year 1 month 6 days

Stock-Based Compensation - Su57

Stock-Based Compensation - Summary of Stock Option Activity (Detail) - Stock Options [Member]	6 Months Ended
	Jun. 30, 2017$ / sharesshares
Summary Of Stock Option Activities [Line Items]
Options Outstanding, Beginning balance, Shares | shares	825,561
Options Outstanding, Exercised | shares	(94,300)
Options Outstanding, Expired or cancelled | shares	(62,747)
Options Outstanding, Forfeited | shares	(30,901)
Options Outstanding, Ending balance, Shares | shares	637,613
Options Exercisable, Ending balance, Shares | shares	611,448
Options Outstanding, Beginning balance, Weighted Average Exercise Price | $ / shares	$ 7.30
Weighted Average Exercise Price, Exercised | $ / shares	7.09
Weighted Average Exercise Price, Expired or Cancelled | $ / shares	8.50
Weighted Average Exercise Price, Forfeited | $ / shares	6.79
Options Outstanding, Ending balance, Weighted Average Exercise Price | $ / shares	7.24
Options Outstanding, Exercisable at End of Year, Weighted Average Exercise Price | $ / shares	$ 7.29

Stock-Based Compensation - Info

Stock-Based Compensation - Information about Stock Options Outstanding Under all Stock Plans (Detail)	6 Months Ended
	Jun. 30, 2017$ / sharesshares
Range One [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range of exercise prices	$ 5
Upper range of exercise prices	$ 6
Options Outstanding, Number | shares	19,753
Options Outstanding, Weighted Average Contractual Life (Years)	5 years 10 months 21 days
Options Outstanding, Weighted-Average Exercise Price	$ 5.11
Options Exercisable, Number | shares	1,253
Options Exercisable, Weighted Average Exercise Price	$ 5.87
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	$ 7
Options Outstanding, Number | shares	39,789
Options Outstanding, Weighted Average Contractual Life (Years)	10 months 3 days
Options Outstanding, Weighted-Average Exercise Price	$ 6.80
Options Exercisable, Number | shares	39,789
Options Exercisable, Weighted Average Exercise Price	$ 6.80
Range Three [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	$ 8
Options Outstanding, Number | shares	524,039
Options Outstanding, Weighted Average Contractual Life (Years)	2 years 9 months 7 days
Options Outstanding, Weighted-Average Exercise Price	$ 7.20
Options Exercisable, Number | shares	521,755
Options Exercisable, Weighted Average Exercise Price	$ 7.19
Range Four [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	$ 9
Options Outstanding, Number | shares	35,732
Options Outstanding, Weighted Average Contractual Life (Years)	1 year 11 months 26 days
Options Outstanding, Weighted-Average Exercise Price	$ 8.26
Options Exercisable, Number | shares	30,509
Options Exercisable, Weighted Average Exercise Price	$ 8.28
Range Five [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	$ 10
Options Outstanding, Number | shares	16,900
Options Outstanding, Weighted Average Contractual Life (Years)	1 year 2 months 12 days
Options Outstanding, Weighted-Average Exercise Price	$ 9.62
Options Exercisable, Number | shares	16,742
Options Exercisable, Weighted Average Exercise Price	$ 9.62
Range Six [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	$ 10.46
Options Outstanding, Number | shares	1,400
Options Outstanding, Weighted Average Contractual Life (Years)	1 year 1 month 2 days
Options Outstanding, Weighted-Average Exercise Price	$ 10.46
Options Exercisable, Number | shares	1,400
Options Exercisable, Weighted Average Exercise Price	$ 10.46
Range Seven [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range of exercise prices	5
Upper range of exercise prices	$ 10.46
Options Outstanding, Number | shares	637,613
Options Outstanding, Weighted Average Contractual Life (Years)	2 years 7 months 28 days
Options Outstanding, Weighted-Average Exercise Price	$ 7.24
Options Exercisable, Number | shares	611,448
Options Exercisable, Weighted Average Exercise Price	$ 7.29

Stock-Based Compensation - Weig

Stock-Based Compensation - Weighted Average Contractual Life and Intrinsic Value of Options Outstanding (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2017USD ($)
Share Based Compensation Arrangement By Share Based Payment Award Options Additional Disclosures [Abstract]
Options Outstanding Weighted Average Contractual Life (years)	2 years 7 months 28 days
Options Exercisable Weighted Average Contractual Life (years)	2 years 6 months 10 days
Options Outstanding Intrinsic Value	$ 49
Options Exercisable Intrinsic Value	$ 12

Stock-Based Compensation - Perf

Stock-Based Compensation - Performance-based Equity Awards - Additional Information (Detail) - Performance Units [Member] - shares	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested performance units	262,500	296,500
Unvested units forfeitures	34,000

Stock-Based Compensation - Su61

Stock-Based Compensation - Summary of Performance Share Equity Activity (Detail) - Performance Units [Member]	6 Months Ended
	Jun. 30, 2017$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning balance, Shares | shares	296,500
Units cancelled, Shares | shares	(34,000)
Ending balance, Shares | shares	262,500
Beginning balance, Weighted Average Grant Date Fair Value | $ / shares	$ 7.95
Units cancelled, Weighted Average Grant Date Fair Value | $ / shares	7.89
Ending balance, Weighted Average Grant Date Fair Value | $ / shares	$ 7.95

Stock-Based Compensation - Shor

Stock-Based Compensation - Short-term Incentive Plan - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued under short-term incentive plan, value				$ 1,846
Stock compensation expense	$ 1,100		$ 1,400	1,800	$ 2,200
Short-Term Incentive Plan (STIP) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued under short-term incentive plan, shares	0	112,916
Stock issued under short-term incentive plan, value		$ 600
Stock compensation expense				$ 0

Stock-Based Compensation - Empl

Stock-Based Compensation - Employee Stock Purchase Plan ("ESPP") - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended		6 Months Ended
	Feb. 28, 2017	Feb. 29, 2016	Jun. 30, 2017
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
Options issued	72,218	78,415
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]	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Calculation of fair value of each employee stock purchase grant using the Black-Scholes option-pricing model
Dividend yield	3.60%	4.20%
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 - Em65

Stock-Based Compensation - Employee Withholding Taxes on Stock Awards - Additional Information (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payment of withholding taxes related to stock awards	$ 692	$ 187
Employee Withholding Taxes on Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payment of withholding taxes related to stock awards	$ 700	$ 400

Stock-Based Compensation - St66

Stock-Based Compensation - Stock Repurchases - Additional Information (Detail) - $ / shares	3 Months Ended	6 Months Ended
	Mar. 31, 2016	Jun. 30, 2017
Share Repurchases [Abstract]
Stock repurchased during period, shares	783,212	0
Stock repurchased during period, average price per share	$ 5.23

Benefit Plans - Additional Info

Benefit Plans - Additional Information (Detail) - Employee Benefit Plans [Member]	6 Months Ended
	Jun. 30, 2017
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		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Defined Benefit Plan Disclosure [Line Items]
Contribution to retirement plans	$ 284	$ 262	$ 567	$ 537
US Employees [Member]
Defined Benefit Plan Disclosure [Line Items]
Contribution to retirement plans	175	165	360	340
Foreign Employees [Member]
Defined Benefit Plan Disclosure [Line Items]
Contribution to retirement plans	$ 109	$ 97	$ 207	$ 197

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) $ in Thousands	1 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended
	Apr. 30, 2017ft²	Jun. 30, 2016USD ($)ft²	Jun. 30, 2017USD ($)	Jun. 30, 2016USD ($)ft²	Jun. 30, 2017USD ($)	Jun. 30, 2016USD ($)ft²	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Commitments And Contingencies Disclosure [Line Items]
Restructuring reserve			$ 138		$ 138		$ 196
Rent expense under leases			300	$ 200	500	$ 500
Operating lease obligation			2,946		2,946
Allowance for product returns					200		200
Warranty reserve			421		$ 421		394
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		$ 303	421	303	$ 421	303	394	$ 348
Colorado Office [Member]
Commitments And Contingencies Disclosure [Line Items]
Lease expiration date					Oct. 31, 2020
Operating lease obligation			400		$ 400
Beijing Design Center [Member]
Commitments And Contingencies Disclosure [Line Items]
Operating lease obligation		$ 400		$ 400		$ 400
Lease term		4 years
Area of office space | ft²		11,270		11,270		11,270
Tianjin Facility [Member]
Commitments And Contingencies Disclosure [Line Items]
Lease expiration date	Apr. 11, 2018
Operating lease obligation			35		35
Area of office space | ft²	22,120
Accrued Liabilities [Member]
Commitments And Contingencies Disclosure [Line Items]
Restructuring reserve			46		46		100
Long-term Liabilities [Member]
Commitments And Contingencies Disclosure [Line Items]
Restructuring reserve			$ 92		$ 92		$ 100

Commitments and Contingencies70

Commitments and Contingencies - Summary of Restructuring Activity (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2017USD ($)
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 196
Expenses/ Adjustments	8
Cash Payments/ Adjustments	(66)
Ending Balance	138
Severance and Related Employee Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	6
Expenses/ Adjustments	(1)
Cash Payments/ Adjustments	(5)
Ending Balance	0
Lease Terminations [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	190
Expenses/ Adjustments	9
Cash Payments/ Adjustments	(61)
Ending Balance	$ 138

Commitments and Contingencies71

Commitments and Contingencies - Future Minimum Rental Payments Under Operating Leases (Detail) $ in Thousands	Jun. 30, 2017USD ($)
Operating Leases Future Minimum Payments Due [Abstract]
2,017	$ 569
2,018	1,036
2,019	949
2,020	364
Thereafter	28
Future minimum lease payments	$ 2,946

Commitments and Contingencies72

Commitments and Contingencies - Summary of Capital Leases for Office and Manufacturing Equipment (Detail) - Office and Manufacturing Equipment [Member] - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Capital Leased Assets [Line Items]
Cost	$ 453	$ 324
Accumulated Depreciation	(149)	(105)
Net Book Value	$ 304	$ 219

Commitments and Contingencies73

Commitments and Contingencies - Present Value of Net Minimum Lease Payments, Capital Leases (Detail) $ in Thousands	Jun. 30, 2017USD ($)
Commitments And Contingencies Disclosure [Abstract]
2,017	$ 52
2,018	104
2,019	87
2,020	47
Thereafter	47
Total minimum payments required:	337
Less amount representing interest:	24
Present value of net minimum lease payments:	$ 313

Commitments and Contingencies74

Commitments and Contingencies - Changes in Warranty Reserves (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Changes in warranty reserves
Beginning balance	$ 394
Ending balance	421
Warranty Reserves [Member]
Changes in warranty reserves
Beginning balance	394	$ 348
Provisions for warranties	74	33
Consumption of reserves	(47)	(78)
Ending balance	$ 421	$ 303

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 31, 2017	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Income Tax Disclosure [Line Items]
Income tax expense (benefit) in continuing operations		$ (140,000)	$ 7,703,000	$ (274,000)	$ 6,957,000
Statutory rate				34.00%	34.00%
Adjustments of deferred tax valuation allowance				$ 0	$ 7,600,000	$ 12,600,000
Deferred tax assets, net of deferred tax liabilities		5,600,000		5,600,000		4,500,000
Deferred tax assets, valuation allowance		13,500,000		$ 13,500,000		13,300,000
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
Additional adjustment to the valuation allowance						5,000,000
Gross unrecognized tax benefit		700,000		$ 700,000		$ 900,000
Research Tax Credit Carryforward [Member]
Income Tax Disclosure [Line Items]
Tax benefit related to previously unrecognized tax benefits		100,000		100,000
ASU No. 2016-09 [Member]
Income Tax Disclosure [Line Items]
Income tax deficiencies with restricted stock and stock options				200,000
Adjustments of deferred tax valuation allowance				200,000
Increase to deferred tax assets to account for tax benefits and forfeitures	$ 700,000
Deferred tax assets, valuation allowance		$ 100,000		$ 100,000

Segment, Customer and Geograp76

Segment, Customer and Geographic Information - Continuing Operations - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2017Customer	Jun. 30, 2016Customer	Jun. 30, 2017SegmentCustomer	Jun. 30, 2016Customer
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	1
Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Entity wide revenue major customer, benchmark percentage	10.00%			12.00%
Sales [Member] | Customer Concentration Risk [Member] | Minimum [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Entity wide revenue major customer, benchmark percentage		10.00%	10.00%

Segment, Customer and Geograp77

Segment, Customer and Geographic Information - Continuing Operations - Result of Operations by Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Results of operations by segments
REVENUES	$ 21,501	$ 21,308	$ 44,471	$ 40,491
GROSS PROFIT	8,962	8,934	18,416	16,394
OPERATING INCOME (LOSS) FOR CONTINUING OPERATIONS	(339)	(86)	(317)	(1,375)
Depreciation	633	659	1,262	1,319
Intangible amortization	291	744	581	618
Capital expenditures	494	693	1,544	1,268
Operating Segments [Member] | Connected Solutions [Member]
Results of operations by segments
REVENUES	16,866	15,781	34,137	30,480
GROSS PROFIT	5,731	4,941	11,135	9,265
OPERATING INCOME (LOSS) FOR CONTINUING OPERATIONS	2,349	1,792	4,095	3,094
Depreciation	425	468	852	933
Intangible amortization	39	44	78	114
Capital expenditures	334	264	844	843
Operating Segments [Member] | RF Solutions [Member]
Results of operations by segments
REVENUES	4,661	5,572	10,418	10,116
GROSS PROFIT	3,223	3,983	7,270	7,122
OPERATING INCOME (LOSS) FOR CONTINUING OPERATIONS	411	859	1,432	786
Depreciation	137	191	278	386
Intangible amortization	252	700	503	504
Capital expenditures	226	109	298	74
Corporate, Non-Segment [Member]
Results of operations by segments
REVENUES	(26)	(45)	(84)	(105)
GROSS PROFIT	8	10	11	7
OPERATING INCOME (LOSS) FOR CONTINUING OPERATIONS	(3,099)	(2,737)	(5,844)	(5,255)
Depreciation	71	0	132	0
Intangible amortization	0	0	0	0
Capital expenditures	$ (66)	$ 320	$ 402	$ 351

Segment, Customer and Geograp78

Segment, Customer and Geographic Information - Continuing Operations - Assets by Segment (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Results of operations by segments
Accounts receivable	$ 17,735	$ 19,101
Inventories	13,783	14,442
Current assets held for sale	694	50
Property and equipment, net	12,310	11,796
Goodwill	3,332	3,332
Intangible assets, net	2,694	3,275
Deferred tax assets, net	5,647	4,512
Other noncurrent assets	83	36
Non-current assets held for sale	0	813
Operating Segments [Member] | Connected Solutions [Member]
Results of operations by segments
Accounts receivable	12,773	12,731
Inventories	11,690	12,301
Current assets held for sale	0	0
Property and equipment, net	9,908	9,756
Goodwill	0	0
Intangible assets, net	155	233
Deferred tax assets, net	0	0
Other noncurrent assets	0	0
Non-current assets held for sale		0
Operating Segments [Member] | RF Solutions [Member]
Results of operations by segments
Accounts receivable	4,962	6,370
Inventories	2,093	2,141
Current assets held for sale	694	50
Property and equipment, net	1,400	1,309
Goodwill	3,332	3,332
Intangible assets, net	2,539	3,042
Deferred tax assets, net	0	0
Other noncurrent assets	0	0
Non-current assets held for sale		813
Corporate, Non-Segment [Member]
Results of operations by segments
Accounts receivable	0	0
Inventories	0	0
Current assets held for sale	0	0
Property and equipment, net	1,002	731
Goodwill	0	0
Intangible assets, net	0	0
Deferred tax assets, net	5,647	4,512
Other noncurrent assets	$ 83	36
Non-current assets held for sale		$ 0

Segment, Customer and Geograp79

Segment, Customer and Geographic Information - Continuing Operations - Customer Accounted Revenues by Geographic Location (Detail) - Sales [Member]	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	10.00%			12.00%
Asia Pacific [Member] | Geographic Concentration Risk [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	16.00%	16.00%	19.00%	17.00%
Europe, Middle East, & Africa [Member] | Geographic Concentration Risk [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	8.00%	7.00%	7.00%	9.00%
Other Americas [Member] | Geographic Concentration Risk [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	6.00%	6.00%	5.00%	6.00%
Total Foreign Sales [Member] | Geographic Concentration Risk [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Sales	30.00%	29.00%	31.00%	32.00%

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) $ in Thousands	Aug. 01, 2017USD ($)Employee	Jul. 31, 2017USD ($)	Jun. 30, 2017USD ($)	Dec. 31, 2016USD ($)
Subsequent Event [Line Items]
Book value of the assets sold			$ 91,858	$ 92,166
Subsequent Event [Member] | Network Engineering Services [Member]
Subsequent Event [Line Items]
Proceeds from sale of business		$ 1,450
Book value of the assets sold		700
Amount received from sale of business at closing		1,400
Amount recieved from sale of business		1,300
Proceeds from sale of business related to future services		100
Working capital retained including accounts receivable, accounts payable and accrued liabilities		$ 500
Number of employees terminated | Employee	25
Estmated severance and related benefits	$ 200
Subsequent Event [Member] | Network Engineering Services [Member] | Gabe's Construction Compnay Inc [Member]
Subsequent Event [Line Items]
Number of employees hired | Employee	11