ClearOne (CLRO) 10-K 20 Apr 18 2017 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Apr. 20, 2018	Jun. 30, 2017
Document Information [Line Items]
Entity Registrant Name	CLEARONE INC
Entity Central Index Key	840,715
Trading Symbol	clro
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding (in shares)		8,301,473
Entity Public Float			$ 51.2
Document Type	10-K
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 5,571,000	$ 12,100,000
Marketable securities	2,689,000	5,030,000
Receivables, net of allowance for doubtful accounts of $472 and $187, as of December 31, 2017 and 2016 respectively	7,794,000	7,461,000
Inventories	14,415,000	11,377,000
Distributor channel inventories	1,555,000	1,530,000
Prepaid expenses and other assets	1,862,000	2,642,000
Total current assets	33,886,000	40,140,000
Long-term marketable securities	10,349,000	21,365,000
Long-term inventories, net	8,708,000	1,664,000
Property and equipment, net	1,549,000	1,513,000
Intangible assets, net	6,543,000	5,677,000
Goodwill	0	12,724,000
Deferred income taxes	6,531,000	4,654,000
Other assets	311,000	387,000
Total assets	67,877,000	88,124,000
Current liabilities:
Accounts payable	4,122,000	3,545,000
Accrued liabilities	1,843,000	1,894,000
Deferred product revenue	4,635,000	3,882,000
Total current liabilities	10,600,000	9,321,000
Deferred rent	103,000	103,000
Other long-term liabilities	607,000	1,251,000
Total liabilities	11,310,000	10,675,000
Shareholders’ equity:
Common stock, par value $0.001, 50,000,000 shares authorized, 8,319,022 and 8,812,644 shares issued and outstanding as of December 31, 2017 and 2016 respectively	8,000	9,000
Additional paid-in capital	47,464,000	46,669,000
Accumulated other comprehensive loss	(65,000)	(205,000)
Retained earnings	9,160,000	30,976,000
Total shareholders’ equity	56,567,000	77,449,000
Total liabilities and shareholders’ equity	$ 67,877,000	$ 88,124,000

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Allowance for doubtful accounts	$ 472	$ 187
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	8,319,022	8,812,644
Common stock, shares outstanding (in shares)	8,319,022	8,812,644

Consolidated Statements of Inco

Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenue	$ 41,804	$ 48,637	$ 57,796
Cost of goods sold	17,795	19,150	21,077
Gross profit	24,009	29,487	36,719
Operating expenses:
Sales and marketing	10,996	10,032	10,646
Research and product development	9,342	8,584	8,318
General and administrative	7,161	7,325	7,493
Impairment of an intangible asset	769
Impairment of goodwill	12,724
Legal settlement	(790)
Total operating expenses	40,202	25,921	26,457
Operating income/(loss)	(16,193)	3,566	10,262
Other income, net	300	312	289
Income/(loss) before income taxes	(15,893)	3,878	10,551
Benefit from/(provision for) income taxes	1,721	(1,434)	(3,775)
Net income/(loss)	$ (14,172)	$ 2,444	$ 6,776
Basic earnings/(loss) per common share (in dollars per share)	$ (1.65)	$ 0.27	$ 0.74
Diluted earnings/(loss) per common share (in dollars per share)	$ (1.65)	$ 0.26	$ 0.71
Basic weighted average shares outstanding (in shares)	8,576,588	9,021,980	9,127,385
Diluted weighted average shares outstanding (in shares)	8,576,588	9,306,034	9,594,659
Comprehensive income:
Net income/(loss)	$ (14,172)	$ 2,444	$ 6,776
Other comprehensive income:
Unrealized gain (loss) on available-for-sale securities, net of tax	36	(1)	(81)
Change in foreign currency translation adjustment	104	(38)	(77)
Comprehensive income/(loss)	$ (14,032)	$ 2,405	$ 6,618

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2014	9,097,827
Balance at Dec. 31, 2014	$ 9	$ 44,939	$ (8)	$ 31,076	$ 76,016
Exercise of stock options (in shares)	56,143				56,143
Exercise of stock options		308			$ 308
Cash dividends				(1,417)	(1,417)
Tax benefit - stock option exercises		41			41
Stock-based compensation expense (in shares)	15,005
Stock-based compensation expense		848			848
Shares purchased under ESPP plans (in shares)	14,982
Proceeds from employee stock purchase plan		155			155
Unrealized gain (loss) on available-for-sale securities, net of tax			(81)		(81)
Foreign currency translation adjustment			(77)		(77)
Net income/(loss)				6,776	6,776
Balance (in shares) at Dec. 31, 2015	9,183,957
Balance at Dec. 31, 2015	$ 9	46,291	(166)	36,435	$ 82,569
Exercise of stock options (in shares)	149,315				374,857
Exercise of stock options		686			$ 686
Cash dividends				(1,817)	(1,817)
Tax benefit - stock option exercises		690			690
Stock-based compensation expense (in shares)	12,491
Stock-based compensation expense		667			667
Shares purchased under ESPP plans (in shares)	9,140
Proceeds from employee stock purchase plan		87			87
Unrealized gain (loss) on available-for-sale securities, net of tax			(1)		(1)
Foreign currency translation adjustment			(38)		(38)
Net income/(loss)				2,444	2,444
Repurchased and cancellation of stock options		(1,752)			(1,752)
Stock repurchased (in shares)	(542,259)
Stock repurchased				(6,086)	(6,086)
Balance (in shares) at Dec. 31, 2016	8,812,644
Balance at Dec. 31, 2016	$ 9	46,669	(205)	30,976	$ 77,449
Exercise of stock options (in shares)	45,260				178,662
Exercise of stock options		64			$ 64
Cash dividends				(2,239)	(2,239)
Stock-based compensation expense		665			665
Shares purchased under ESPP plans (in shares)	9,110
Proceeds from employee stock purchase plan		66			66
Unrealized gain (loss) on available-for-sale securities, net of tax			36		36
Foreign currency translation adjustment			104		104
Net income/(loss)				(14,172)	$ (14,172)
Stock repurchased (in shares)	(551,936)				(551,936)
Stock repurchased	$ (1)			(5,118)	$ (5,119)
Restricted stock granted (in shares)	5,000
Restricted stock granted
Cancellation of restricted stock and stock options (in shares)	(1,056)
Cancellation of restricted stock and stock options				(287)	(287)
Balance (in shares) at Dec. 31, 2017	8,319,022
Balance at Dec. 31, 2017	$ 8	$ 47,464	$ (65)	$ 9,160	$ 56,567

Consolidated Statements of Sha6

Consolidated Statements of Shareholders' Equity (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Retained Earnings [Member]
Cash dividends, per share (in dollars per share)	$ 0.26	$ 0.20	$ 0.155

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net income (loss)	$ (14,172)	$ 2,444	$ 6,776
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	1,531	1,873	2,058
Impairment of goodwill and intangible assets	13,493
Amortization of deferred rent	44	73	95
Stock-based compensation expense	665	667	848
Provision for (recoveries of) doubtful accounts, net	252	132	(4)
Write-down of inventory to net realizable value	649	653	496
Loss on disposal of assets	7	54	7
Tax benefit from exercise of stock options		(690)	(41)
Deferred income taxes	(1,877)	439	(4)
Changes in operating assets and liabilities:
Receivables	(526)	1,085	1,201
Inventories	(10,756)	1,869	(2,249)
Prepaid expenses and other assets	9	(209)	824
Accounts payable	572	733	(242)
Accrued liabilities	(23)	(319)	(1,219)
Income taxes payable	853	(207)	323
Deferred product revenue	740	(665)	(447)
Other long-term liabilities	(644)	48	(638)
Net cash provided/(used) by operating activities	(9,271)	7,834	7,594
Cash flows from investing activities:
Capitalized patent defense costs	(2,289)
Purchase of property and equipment	(638)	(730)	(359)
Purchase of intangible assets	(278)	(161)
Proceeds from maturities and sales of marketable securities	17,640	9,795	7,341
Purchase of marketable securities	(4,248)	(9,826)	(7,630)
Net cash used/(provided) in investing activities	10,187	(922)	(648)
Cash flows from financing activities:
Net proceeds from equity-based compensation programs	130	773	463
Repurchase and cancellation of stock options	(287)	(1,752)
Tax benefits from equity-based compensation programs		690	41
Dividend payments	(2,239)	(1,817)	(1,417)
Payments for stock repurchases	(5,119)	(6,086)
Net cash used in financing activities	(7,515)	(8,192)	(913)
Effect of exchange rate changes on cash and cash equivalents	70	(32)	(61)
Net increase (decrease) in cash and cash equivalents	(6,529)	(1,312)	5,972
Cash and cash equivalents at the beginning of the year	12,100	13,412	7,440
Cash and cash equivalents at the end of the year	5,571	12,100	13,412
Supplemental disclosure of cash flow information:
Cash paid for income taxes	$ 1,154	$ 6	$ 3,730

Note 1 - Business Description,

Note 1 - Business Description, Basis of Presentation and Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]	1. Business Description: ClearOne, Inc., together with its subsidiaries (collectively, “ClearOne” or the “Company”), is a global Company that designs, develops and sells conferencing, collaboration, network streaming and digital signage solutions for audio and visual communications. The performance and simplicity of our advanced comprehensive solutions offer unprecedented levels of functionality, reliability, and scalability. Basis of Presentation: Fiscal Year 10 December 31, 2017 2016 2017, 2016 2015. Consolidation Use of Estimates Foreign Currency Translation Concentration Risk third may no second Significant Accounting Policies: Cash Equivalents three may Marketable Securities - A decline in the market value of any available-for-sale security below cost that is deemed other than temporary results in a charge to earnings and establishes a new cost basis for the security. Losses are charged against “Other income” when a decline in fair value is determined to be other than temporary. We review several factors to determine whether a loss is other than temporary. These factors include, but are not no December 31, 2017, 2016 2015. Accounts Receivable not may The allowance for doubtful accounts is the Company’s best estimate of the amount of probable credit losses in the Company’s existing accounts receivable. Management regularly analyzes accounts receivable including current aging, historical write-off experience, customer concentrations, customer creditworthiness, and current economic trends when evaluating the adequacy of the allowance for doubtful accounts. We review customer accounts quarterly by first not may The Company’s allowance for doubtful accounts activity for the years ended as follows: Year Ended December 31, 2017 2016 201 5 Balance at beginning of the year $ 187 $ 54 $ 58 Allowance increase (decrease) 287 148 36 Write offs , net of recoveries (2 ) (15 ) (40 ) Balance at end of the year $ 472 $ 187 $ 54 Inventories first first not Distributor channel inventories include products that have been delivered to customers for which revenue recognition criteria have not The inventory also includes advance replacement units (valued at cost) provided by the Company to end-users to service defective products under warranty. The value of advance replacement units included in the inventory was $76 $21, December 31, 2017 2016, The inventory consists of current inventory of $14,415 $8,708. 12 Property and Equipment two ten Goodwill and Intangible Assets – three ten not Impairment of Goodwill - 350, Intangibles – Goodwill and Other fourth We assess the recoverability of our one not not not two Note 3 Intangibles one In the first not no second The second During the third September 30, 2017, $12,724, Impairment of Long-Lived Assets - may not During the twelve December 31, 2017 $769 Revenue Recognition The Company provides a right of return on product sales to certain distributors and other resellers under a product rotation program. Under this seldom-used program, once a quarter, a distributor or reseller is allowed to return products purchased during the prior 180 not 15% not Revenue from product sales to distributors is not not The amount of deferred cost of goods sold is included in distributor channel inventories. The details of deferred revenue and associated cost of goods sold and gross profit are as follows: As of December 31, 2017 2016 Deferred revenue $ 4,635 $ 3,882 Deferred cost of goods sold 1,555 1,530 Deferred gross profit $ 3,080 $ 2,352 The Company offers rebates and market development funds to certain of its distributors, dealers/resellers, and end-users based upon the volume of product purchased by them. The Company records rebates as a reduction of revenue in accordance with GAAP. The Company provides, at its discretion, advance replacement units to end-users on defective units of certain products under warranty. Since the purpose of these units is not Sales and Similar Taxes - Shipping and Handling Costs – Warranty Costs The details of changes in the Company’s warranty accrual are as follows: Year Ended December 31, 2017 2016 201 5 Balance at the beginning of year $ 246 $ 288 $ 331 Accruals/additions 399 361 442 Usage/claims (400 ) (403 ) (485 ) Balance at end of year $ 245 $ 246 $ 288 Advertising December 31, 2017, 2016 2015 $1,079, $836, $728, Research and Product Development Costs Income Taxes not may not December 31, 2017 2016, $2,236 $1,404, On December 22, 2017, January 1, 2018, not 1 35 21 2 3 4 5 6 7 one 8 50 9 December 31, 2017. Shortly after enactment, the Securities and Exchange Commission issued Staff Accounting Bulletin No. 118 118" December 31, 2017. may not may 12 118. The Transition Tax is based on the Company's post- 1986 not The reduction in the corporate tax rate to 21 January 1, 2018. $3.3 $3.3 December 31, 2017. The impact of the Tax Act may 12 may may The Company follows the provisions contained in ASC Topic 740, Income Taxes. not Judgment is required in determining the provision for income taxes and related accruals, deferred tax assets and liabilities. In the ordinary course of business, there are transactions and calculations where the ultimate tax outcome is uncertain. Additionally, the Company’s tax returns are subject to audit by various tax authorities. Although the Company believes that its estimates are reasonable, actual results could differ from these estimates. Earnings Per Share Year Ended December 31, 2017 2016 201 5 Numerator: Net income/(loss) $ (14,172 ) $ 2,444 $ 6,776 Denominator: Basic weighted average shares 8,576,588 9,021,980 9,127,385 Dilutive common stock equivalents using treasury stock method - 284,054 467,274 Diluted weighted average shares 8,576,588 9,306,034 9,594,659 Basic earnings per common share: $ (1.65 ) $ 0.27 $ 0.74 Diluted earnings per common share: $ (1.65 ) $ 0.26 $ 0.71 Weighted average options outstanding 815,870 885,163 1,053,785 Anti-dilutive options not included in the computation 815,870 323,644 177,125 Share-Based Payment Recent Accounting Pronouncements - Not May 2014, 2014 09, 606 January 1, 2018. first 2018, In February 2016, No. 2016 02, 842 12 December 15, 2018 December 15, 2018. not In March 2016, No. 2016 09, 2016 09 January 1, 2017. 2016 09, In August 2016, No. 2016 15, eight 2016 15 January 1, 2018 2016 15 In May 2017, No. 2017 09, 718 1 2 718, January 1, 2018 not

Note 2 - Marketable Securities

Note 2 - Marketable Securities	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	2. The Company has classified its marketable securities as available-for-sale securities. These securities are carried at estimated fair value with unrealized holding gains and losses included in accumulated other comprehensive income/loss in shareholders’ equity until realized. Gains and losses on marketable security transactions are reported on the specific-identification method. Dividend and interest income are recognized when earned. The amortized cost, gross unrealized holding gains, gross unrealized holding losses, and fair value for available-for-sale securities by major security type and class of security at December 31, 2017 2016 Amortized cost Gross unrealized holding gains Gross unrealized holding losses Estimated fair value December 31, 2017 Available-for-sale securities: Corporate bonds and notes $ 8,458 $ 19 $ (49 ) $ 8,428 Municipal bonds 4,637 1 (28 ) 4,610 Total available-for-sale securities $ 13,095 $ 20 $ (77 ) $ 13,038 December 31, 2016 Available-for-sale securities: Corporate bonds and notes $ 20,028 $ 64 $ (122 ) $ 19,970 Municipal bonds 6,463 6 (44 ) 6,425 Total available-for-sale securities $ 26,491 $ 70 $ (166 ) $ 26,395 Maturities of marketable securities classified as available-for-sale securities were as follows at December 31, 2017: Amortized Estimated cost fair value Due within one year $ 2,688 $ 2,688 Due after one year through five years 10,408 10,350 Total available-for-sale securities $ 13,096 $ 13,038 Debt securities in an unrealized loss position as of December 31, 2017 not not not December 31, 2017 Less than 12 months More than 12 months Total Estimated fair value Gross unrealized holding losses Estimated fair value Gross unrealized holding losses Estimated fair value Gross unrealized holding losses As of December 31, 2017 Corporate bonds and notes $ 3,799 $ (20 ) 2,125 $ (30 ) $ 5,924 $ (50 ) Municipal bonds 3,341 (18 ) 657 (9 ) 3,998 (27 ) $ 7,140 $ (38 ) $ 2,782 $ (39 ) $ 9,922 $ (77 )

Note 3 - Business Combinations,

Note 3 - Business Combinations, Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Business Combinations, Goodwill and Intangibles Disclosure [Text Block]	3. Goodwill impairment There was a decrease in goodwill during the twelve $12,724 December 31, 2016 $0 December 31, 2017 third September 30, 2017, one two two September 30, 2017. $12,724, third September 30, 2017. Intangible Assets Intangible assets as of December 31, 2017, 2016 Estimated useful lives As of December 31, (in years) 2017 2016 Tradename 5 to 7 $ 555 $ 555 Patents and technological know-how 10 8,578 6,010 Proprietary software 3 to 15 2,981 4,341 Other 3 to 5 323 324 Total intangible assets, gross 12,437 11,230 Accumulated amortization (5,894 ) (5,553 ) Total intangible assets, net $ 6,543 $ 5,677 During the years ended December 31, 2017, 2016 2015, $932, $1,121, 1,258 The estimated future amortization expense of intangible assets is as follows: Years ending December 31, 2018 $ 935 2019 831 2020 652 2021 652 2022 652 Thereafter 2,821 Total $ 6,543

Note 4 - Inventories

Note 4 - Inventories	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Inventory Disclosure [Text Block]	4. Inventories, net of reserves, consisted of the following: As of December 31, 2017 2016 Current: Raw materials $ 197 $ 2,291 Finished goods 14,218 9,086 Total $ 14,415 $ 11,377 Long-term: Raw materials $ 2,682 $ 599 Finished goods 6,026 1,065 Total $ 8,708 $ 1,664 Long-term inventory represents inventory held in excess of our current (next 12 no Current finished goods do not $1,555 $1,530 December 31, 2017 2016, not The losses incurred on valuation of inventory at the lower of cost or market value and write-off of obsolete inventory amounted to $649, $653 $496 December 31, 2017, 2016 2015,

Note 5 - Property and Equipment

Note 5 - Property and Equipment	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	5. Major classifications of property and equipment and estimated useful lives were as follows: Estimated useful lives As of December 31, in years 2017 2016 Office furniture and equipment 3 to 10 $ 4,904 $ 4,835 Leasehold improvements 1 to 6 1,509 1,495 Vehicles 5 to 10 160 - Manufacturing and test equipment 2 to 10 2,577 2,537 9,150 8,867 Accumulated depreciation and amortization (7,601 ) (7,354 ) Property and equipment, net $ 1,549 $ 1,513 Depreciation expense on property and equipment for the years ended December 31, 2017, 2016 2015 $599, $723, $801, twelve 31, 2017 $128

Note 6 - Leases and Deferred Re

Note 6 - Leases and Deferred Rent	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Leases of Lessee Disclosure [Text Block]	6. Rent expense is recognized on a straight-line basis over the period of the lease taking into account future rent escalation and holiday periods. Rent expense was $999, $1,099 $1,420, $44, $73, $95 December 31, 2017, 2016 2015, We occupy a 5,000 February 2021 10 We lease a 4,700 December 2019 two We currently occupy a 31,000 May 2019, We occupy a 10,700 September 2019, We occupy a 7,070 October 2019. We occupy a 40,000 April 2025, Future minimum lease payments under non-cancellable operating leases with initial terms of one Years ending December 31, 2018 $ 762 2019 412 2020 182 2021 187 2022 193 Thereafter 472 Total minimum lease payments $ 2,208

Note 7 - Accrued Liabilities

Note 7 - Accrued Liabilities	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Accounts Payable and Accrued Liabilities Disclosure [Text Block]	7. Accrued liabilities consist of the following: As of December 31, 2017 2016 Accrued salaries and other compensation $ 1,072 $ 1,098 Sales and marketing programs 435 319 Product warranty 245 246 Other accrued liabilities 91 231 Total $ 1,843 $ 1,894

Note 8 - Commitments and Contin

Note 8 - Commitments and Contingencies	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	8. We establish contingent liabilities when a particular contingency is both probable and estimable. The Company is not may Outsource Manufacturers. $3,402 December 31, 2017. Uncertain Tax Positions. 12, $652 December 31, 2017. not Legal Proceedings. Intellectual Property Litigation On April 25, 2017, No. 9,635,186 “186 April 25, 2017, three ‘186 ‘186 No. 9,264,553 “553 not 2018, ‘186 On May 22, 2017, No. 16–341. none May 30, 2017, May 31, 2017, November 14, 2017 March 16, 2018 November 14, 2017. March 16, '553 On July 14, 2017, ‘553 January 29, 2018, On August 6, 2017, '186 March 16, 2018 On November 7, 2017, No. 9,813,806 '806 February 6, 2018, '806 April 17, '806 The Company intends to continue to vigorously enforce and defend its intellectual property rights in the Illinois Action. During twelve December 31, 2016 2016, $408 $1,111 $2,289 twelve December 31, 2017. Former Employee Litigation On or about October 24, 2016, 18 1514A, August 17, 2016 ( March 2, 2017, Following negotiations between the parties, the parties executed a settlement agreement on December 7, 2017 ( no December 2017, not December 6, 2017. During the twelve December 31, 2016 2017, $927 $152 2017 The Company maintains an Employment Practices Liability policy with Chubb/Federal Insurance Company (the “EPL Policy”). Based on the allegations contained in the OSHA Complaint, the Company has tendered a claim for coverage under the EPL Policy. In addition, the Company is also involved from time to time in various claims and legal proceedings which arise in the normal course of our business. Such matters are subject to many uncertainties and outcomes that are not not Conclusion We believe there are no no The Company believes it has adequately accrued for the aforementioned contingent liabilities. If adverse outcomes were to occur, our financial position, results of operations and cash flows could be negatively affected materially for the period in which the adverse outcomes are known.

Note 9 - Share-based Payments

Note 9 - Share-based Payments	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Shareholders' Equity and Share-based Payments [Text Block]	9. Employee Stock Option Plans The Company’s share-based incentive plans offering stock options primarily consists of two one The Company’s 1998 “1998 November 2007. December 1999, 1,066,000 9.8 637,089 June 30, 2003. December 1999 June 2002, 1,248,250 6.0 300,494 June 30, 2005. The Company’s 2007 “2007 December 12, 2016. 2007 2,000,000 may may Of the options granted subsequent to June 2002, 3 4 one third one fourth first 3 4 December 31, 2017 ten Under the 1998 2,500,000 December 31, 2017, no 1998 As of December 31, 2017, 764,430 2007 December 31, 2017, 2007 774,456 no 1998 The Company uses judgment in determining the fair value of the share-based payments on the date of grant using an option-pricing model with assumptions regarding a number of highly complex and subjective variables. These variables include, but are not 718. In applying the Black-Scholes methodology to the options granted, the Company used the following assumptions: Year ended December 31, 2017 2016 2015 Risk-free interest rate, average 2.21 % 1.52 % 2.00 % Expected option life, average (in years) 7.9 6.1 6.1 Expected price volatility, average 40.71 % 43.75 % 44.30 % Expected dividend yield 2.83 % 1.71 % 1.10 % The risk-free interest rate is determined using the U.S. Treasury rate in effect as of the date of the grant, based on the expected life of the stock option. The expected life of the stock option is determined using historical data. The expected price volatility is determined using a weighted average of daily historical volatility of the Company’s stock price over the corresponding expected option life. Under guidelines of ASC Topic 718, The following table shows the stock option activity: Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value As of December 31, 2014 1,040,081 $ 5.65 5.60 $ 4,286 Granted 56,666 13.03 Reinstated 4,583 4.47 Expired and canceled (1,000 ) 3.42 Forfeited prior to vesting (15,252 ) 7.85 Exercised (56,143 ) 5.51 As of December 31, 2015 1,028,935 $ 6.03 4.73 $ 7,104 Granted 217,700 11.73 Expired and canceled (4,186 ) 12.03 Forfeited prior to vesting (17,360 ) 10.67 Exercised (374,857 ) 4.46 As of December 31, 2016 850,232 $ 8.06 5.78 $ 3,001 Granted 105,000 9.90 Expired and canceled (3,144 ) 10.29 Forfeited prior to vesting (8,996 ) 11.01 Exercised (178,662 ) 5.90 As of December 31, 2017 764,430 $ 8.78 6.48 $ 1,038 Vested and Expected to Vest at December 31, 2015 1,028,935 $ 6.03 4.73 $ 7,104 Vested at December 31, 2015 820,022 $ 5.10 3.74 $ 6,419 Vested and Expected to Vest at December 31, 2016 850,232 $ 8.06 5.78 $ 3,001 Vested at December 31, 2016 552,097 $ 6.33 4.09 $ 2,843 Vested and Expected to Vest at December 31, 2017 764,430 $ 8.78 6.48 $ 1,038 Vested at December 31, 2017 529,669 $ 7.89 5.50 $ 1,033 The weighted average per share fair value of options granted during the years ending December 31, 2017, 2016 2015 $3.31, $4.27, 5.27 December 31, 2017, 2016 2015 $646, $2,824, $404 The total pre-tax compensation cost related to stock options recognized during the years ended December 31, 2017, 2016, 2015 $665, $667 $848, December 31, 2017, 2016 2015 $0, $107 $41, December 31, 2017, not $829, 1.80 Employee Stock Purchase Plan During 2017, 2016 December 12, 2016. December 31, 2017, 466,783 500,000 Jan 1 July 1, six not 5% During each offering period, each eligible employee may may 2,500 $25 85% 15% first Shares purchased and compensation expense associated with Employee Stock Purchase Plans were as follows: 2017 2016 201 5 Shares purchased under ESPP plans 9,110 9,140 14,982 Plan compensation expense $ 13 $ 18 $ 31 Stock Repurchase Program and Cash Dividends In May 2012, 272,767 $2,598 December 31, 2014. December 2, 2016, On March 9, 2016, $10 may On March 1, 2017, $10 twelve may March 2018. During the twelve December 31, 2017, March 2016 March 2017: $ in thousands except per share price Total Number of Shares Purchased (a) Average Price Paid per Share (b) Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs (c) Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs ($ thousands) (d) January 1 to March 31 78,956 $ 11.75 78,956 $ 9.9 April 1 to June 30 214,866 9.91 214,866 7.7 July 1 to September 30 139,570 7.84 139,570 6.6 October 1 to December 31 118,544 8.18 118,544 5.7 Total 551,936 $ 9.28 551,936 From March 11, 2016 March 17, 2016, 1998 2007 225,542 $7.77.

Note 10 - Significant Customers

Note 10 - Significant Customers	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Concentration Risk Disclosure [Text Block]	10. Sales to significant customers that represented more than 10 Year ended December 31, 2017 2016 2015 Customer A 16.1 % 16.3 % 14.2 % Customer B - %* - %* 10.4 % Total 16.1 % 16.3 % 24.6 % * Sales did not 10% The following table summarizes the percentage of total gross accounts receivable from significant customers: As of December 31, 2017 2016 Customer A 20.3 % 13.4 % Customer B 11.0 % 11.7 % Total 31.3 % 25.1 % These customers facilitate product sales to a large number of end-users, none 10 one

Note 11 - Fair Value Measuremen

Note 11 - Fair Value Measurements	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Fair Value Disclosures [Text Block]	11. The fair value of the Company’s financial instruments reflects the amounts that the Company estimates it will receive in connection with the sale of an asset or pay in connection with the transfer of a liability in an orderly transaction between market participants at the measurement date (exit price). The fair value hierarchy prioritizes the use of inputs used in valuation techniques into the following three Level 1 Level 2 not not Level 3 The substantial majority of the Company’s financial instruments are valued using quoted prices in active markets or based on other observable inputs. The following tables set forth the fair value of the financial instruments re-measured by the Company as of December 31, 2017 2016: Level 1 Level 2 Level 3 Total December 31, 2017 Corporate bonds and notes $ — $ 8,428 $ — $ 8,428 Municipal bonds — 4,610 — 4,610 Total $ — $ 13,038 $ — $ 13,038 December 31, 2016 Corporate bonds and notes $ — $ 19,970 $ — $ 19,970 Municipal bonds — 6,425 — 6,425 Total $ — $ 26,395 $ — $ 26,395

Note 12 - Income Taxes

Note 12 - Income Taxes	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Income Tax Disclosure [Text Block]	12. Consolidated income before taxes for domestic and foreign operations consisted of the following: Year ended December 31, 2017 2016 2015 Domestic $ (12,630 ) $ 6,332 $ 13,295 Foreign (3,263 ) (2,454 ) (2,744 ) Total $ (15,893 ) $ 3,878 $ 10,551 The Company’s (provision) for income taxes consisted of the following: Year ended December 31, 2017 2016 201 5 Current: Federal $ 577 $ (593 ) $ (3,386 ) State (66 ) 63 (344 ) Foreign (682 ) (37 ) - Total current (171 ) (567 ) (3,730 ) Deferred: Federal 1,497 (633 ) (220 ) State 480 (17 ) (10 ) Foreign 748 115 470 Total 2,725 (535 ) 240 Change in valuation allowance (833 ) (332 ) (285 ) Total deferred 1,892 (867 ) (45 ) Benefit/(provision) for income taxes $ 1,721 $ (1,434 ) $ (3,775 ) The income tax benefit (provision) differs from that computed at the federal statutory corporate income tax rate as follows: Year ended December 31, 2017 2016 2015 Tax benefit (provision) at federal statutory rate $ 5,403 $ (1,318 ) $ (3,587 ) State income tax benefit (provision), net of federal benefit 439 (148 ) (408 ) Research and development tax credits 411 423 456 Subpart F inclusion (370 ) - - Foreign earnings or losses taxed at different rates (540 ) (292 ) (231 ) Tax rate change (3,161 ) - - Other 372 233 280 Change in valuation allowance (833 ) (332 ) (285 ) Tax benefit (provision) $ 1,721 $ (1,434 ) $ (3,775 ) The tax effects of significant temporary differences representing net deferred tax assets and liabilities consisted of the following: 2017 2016 Deferred revenue $ 738 $ 845 Basis difference in intangible assets 3,403 (56 ) Inventory reserve 2,089 2,650 Net operating loss carryforwards 1,627 1,391 Research and development tax credits 163 88 Accrued expenses 75 92 Stock-based compensation 327 584 Allowance for sales returns and doubtful accounts 119 70 Difference in property and equipment basis (212 ) (350 ) Other 438 743 Total net deferred income tax asset 8,767 6,057 Less: Valuation allowance (2,236 ) (1,403 ) Net deferred income tax asset (liability) $ 6,531 $ 4,654 The Company has not 740, Accounting for Income Taxes not In accordance with ASC Topic 740, December 31, 2017 not may not The Company has federal net operating loss (“NOL”) carryforwards of approximately $692 $5,805. 2029. not Effective July 1, 2007, two not” 50 The total amount of unrecognized tax benefits at December 31, 2017 2016, $647 $588, December 31, 2017 2016, $14 $87, Although we believe our estimates are reasonable, we can make no not A reconciliation of the beginning and ending amount of liabilities associated with uncertain tax positions is as follows: Year ended December 31, 2017 2016 Balance - beginning of year $ 1,189 $ 1,126 Additions based on tax positions related to the current year 67 16 Additions for tax positions of prior years 520 47 Reductions for tax positions of prior years - - Settlements (165 ) - Lapse in statutes of limitations (959 ) - Uncertain tax positions, ending balance $ 652 $ 1,189 The Company’s U.S. federal income tax returns for 2014 2017 no 2014. 2012 2013 2017. no The Inland Revenue Department of Hong Kong, a Special Administrative Region (the “IRD”), commenced an examination of the Company’s Hong Kong profits tax returns for 2009 2011 fourth 2012, December 31, 2017. no twelve

Note 13 - Geographic Sales Info

Note 13 - Geographic Sales Information	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	13. The United States was the only country to contribute more than 10 Year ended December 31, 2017 2016 201 5 United States $ 24,569 $ 31,838 $ 39,563 All other countries 17,235 16,799 18,233 Total $ 41,804 $ 48,637 $ 57,796

Note 14 - Subsequent Events

Note 14 - Subsequent Events	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Subsequent Events [Text Block]	14. On February 21, 2018, $0.07 March 21, 2018 March 7, 2018 In March 2018, not

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Fiscal Period, Policy [Policy Text Block]	Fiscal Year 10 December 31, 2017 2016 2017, 2016 2015.
Consolidation, Policy [Policy Text Block]	Consolidation
Use of Estimates, Policy [Policy Text Block]	Use of Estimates
Foreign Currency Transactions and Translations Policy [Policy Text Block]	Foreign Currency Translation
Concentration Risk, Credit Risk, Policy [Policy Text Block]	Concentration Risk third may no second
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash Equivalents three may
Marketable Securities, Policy [Policy Text Block]	Marketable Securities - A decline in the market value of any available-for-sale security below cost that is deemed other than temporary results in a charge to earnings and establishes a new cost basis for the security. Losses are charged against “Other income” when a decline in fair value is determined to be other than temporary. We review several factors to determine whether a loss is other than temporary. These factors include, but are not no December 31, 2017, 2016 2015.
Trade and Other Accounts Receivable, Policy [Policy Text Block]	Accounts Receivable not may The allowance for doubtful accounts is the Company’s best estimate of the amount of probable credit losses in the Company’s existing accounts receivable. Management regularly analyzes accounts receivable including current aging, historical write-off experience, customer concentrations, customer creditworthiness, and current economic trends when evaluating the adequacy of the allowance for doubtful accounts. We review customer accounts quarterly by first not may The Company’s allowance for doubtful accounts activity for the years ended as follows: Year Ended December 31, 2017 2016 201 5 Balance at beginning of the year $ 187 $ 54 $ 58 Allowance increase (decrease) 287 148 36 Write offs , net of recoveries (2 ) (15 ) (40 ) Balance at end of the year $ 472 $ 187 $ 54
Inventory, Policy [Policy Text Block]	Inventories first first not Distributor channel inventories include products that have been delivered to customers for which revenue recognition criteria have not The inventory also includes advance replacement units (valued at cost) provided by the Company to end-users to service defective products under warranty. The value of advance replacement units included in the inventory was $76 $21, December 31, 2017 2016, The inventory consists of current inventory of $14,415 $8,708. 12
Property, Plant and Equipment, Policy [Policy Text Block]	Property and Equipment two ten
Goodwill and Intangible Assets, Policy [Policy Text Block]	Goodwill and Intangible Assets – three ten not Impairment of Goodwill - 350, Intangibles – Goodwill and Other fourth We assess the recoverability of our one not not not two Note 3 Intangibles one In the first not no second The second During the third September 30, 2017, $12,724,
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	Impairment of Long-Lived Assets - may not During the twelve December 31, 2017 $769
Revenue Recognition, Policy [Policy Text Block]	Revenue Recognition The Company provides a right of return on product sales to certain distributors and other resellers under a product rotation program. Under this seldom-used program, once a quarter, a distributor or reseller is allowed to return products purchased during the prior 180 not 15% not Revenue from product sales to distributors is not not The amount of deferred cost of goods sold is included in distributor channel inventories. The details of deferred revenue and associated cost of goods sold and gross profit are as follows: As of December 31, 2017 2016 Deferred revenue $ 4,635 $ 3,882 Deferred cost of goods sold 1,555 1,530 Deferred gross profit $ 3,080 $ 2,352 The Company offers rebates and market development funds to certain of its distributors, dealers/resellers, and end-users based upon the volume of product purchased by them. The Company records rebates as a reduction of revenue in accordance with GAAP. The Company provides, at its discretion, advance replacement units to end-users on defective units of certain products under warranty. Since the purpose of these units is not
Sales and Similar Taxes [Policy Text Block]	Sales and Similar Taxes -
Shipping and Handling Cost, Policy [Policy Text Block]	Shipping and Handling Costs –
Standard Product Warranty, Policy [Policy Text Block]	Warranty Costs The details of changes in the Company’s warranty accrual are as follows: Year Ended December 31, 2017 2016 201 5 Balance at the beginning of year $ 246 $ 288 $ 331 Accruals/additions 399 361 442 Usage/claims (400 ) (403 ) (485 ) Balance at end of year $ 245 $ 246 $ 288
Advertising Cost, Policy, Expensed Advertising Cost [Policy Text Block]	Advertising December 31, 2017, 2016 2015 $1,079, $836, $728,
Research and Development Expense, Policy [Policy Text Block]	Research and Product Development Costs
Income Tax, Policy [Policy Text Block]	Income Taxes not may not December 31, 2017 2016, $2,236 $1,404, On December 22, 2017, January 1, 2018, not 1 35 21 2 3 4 5 6 7 one 8 50 9 December 31, 2017. Shortly after enactment, the Securities and Exchange Commission issued Staff Accounting Bulletin No. 118 118" December 31, 2017. may not may 12 118. The Transition Tax is based on the Company's post- 1986 not The reduction in the corporate tax rate to 21 January 1, 2018. $3.3 $3.3 December 31, 2017. The impact of the Tax Act may 12 may may The Company follows the provisions contained in ASC Topic 740, Income Taxes. not Judgment is required in determining the provision for income taxes and related accruals, deferred tax assets and liabilities. In the ordinary course of business, there are transactions and calculations where the ultimate tax outcome is uncertain. Additionally, the Company’s tax returns are subject to audit by various tax authorities. Although the Company believes that its estimates are reasonable, actual results could differ from these estimates.
Earnings Per Share, Policy [Policy Text Block]	Earnings Per Share Year Ended December 31, 2017 2016 201 5 Numerator: Net income/(loss) $ (14,172 ) $ 2,444 $ 6,776 Denominator: Basic weighted average shares 8,576,588 9,021,980 9,127,385 Dilutive common stock equivalents using treasury stock method - 284,054 467,274 Diluted weighted average shares 8,576,588 9,306,034 9,594,659 Basic earnings per common share: $ (1.65 ) $ 0.27 $ 0.74 Diluted earnings per common share: $ (1.65 ) $ 0.26 $ 0.71 Weighted average options outstanding 815,870 885,163 1,053,785 Anti-dilutive options not included in the computation 815,870 323,644 177,125
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	Share-Based Payment
New Accounting Pronouncements, Policy [Policy Text Block]	Recent Accounting Pronouncements - Not May 2014, 2014 09, 606 January 1, 2018. first 2018, In February 2016, No. 2016 02, 842 12 December 15, 2018 December 15, 2018. not In March 2016, No. 2016 09, 2016 09 January 1, 2017. 2016 09, In August 2016, No. 2016 15, eight 2016 15 January 1, 2018 2016 15 In May 2017, No. 2017 09, 718 1 2 718, January 1, 2018 not

Note 1 - Business Description23

Note 1 - Business Description, Basis of Presentation and Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	Year Ended December 31, 2017 2016 201 5 Balance at beginning of the year $ 187 $ 54 $ 58 Allowance increase (decrease) 287 148 36 Write offs , net of recoveries (2 ) (15 ) (40 ) Balance at end of the year $ 472 $ 187 $ 54
Schedule of Deferred Revenue and Associated Cost of Goods Sold and Gross Profit [Table Text Block]	As of December 31, 2017 2016 Deferred revenue $ 4,635 $ 3,882 Deferred cost of goods sold 1,555 1,530 Deferred gross profit $ 3,080 $ 2,352
Schedule of Product Warranty Liability [Table Text Block]	Year Ended December 31, 2017 2016 201 5 Balance at the beginning of year $ 246 $ 288 $ 331 Accruals/additions 399 361 442 Usage/claims (400 ) (403 ) (485 ) Balance at end of year $ 245 $ 246 $ 288
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Year Ended December 31, 2017 2016 201 5 Numerator: Net income/(loss) $ (14,172 ) $ 2,444 $ 6,776 Denominator: Basic weighted average shares 8,576,588 9,021,980 9,127,385 Dilutive common stock equivalents using treasury stock method - 284,054 467,274 Diluted weighted average shares 8,576,588 9,306,034 9,594,659 Basic earnings per common share: $ (1.65 ) $ 0.27 $ 0.74 Diluted earnings per common share: $ (1.65 ) $ 0.26 $ 0.71 Weighted average options outstanding 815,870 885,163 1,053,785 Anti-dilutive options not included in the computation 815,870 323,644 177,125

Note 2 - Marketable Securities

Note 2 - Marketable Securities (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Available-for-sale Securities Reconciliation [Table Text Block]	Amortized cost Gross unrealized holding gains Gross unrealized holding losses Estimated fair value December 31, 2017 Available-for-sale securities: Corporate bonds and notes $ 8,458 $ 19 $ (49 ) $ 8,428 Municipal bonds 4,637 1 (28 ) 4,610 Total available-for-sale securities $ 13,095 $ 20 $ (77 ) $ 13,038 December 31, 2016 Available-for-sale securities: Corporate bonds and notes $ 20,028 $ 64 $ (122 ) $ 19,970 Municipal bonds 6,463 6 (44 ) 6,425 Total available-for-sale securities $ 26,491 $ 70 $ (166 ) $ 26,395
Available-for-sale Securities, Debt Maturities [Table Text Block]	Amortized Estimated cost fair value Due within one year $ 2,688 $ 2,688 Due after one year through five years 10,408 10,350 Total available-for-sale securities $ 13,096 $ 13,038
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block]	Less than 12 months More than 12 months Total Estimated fair value Gross unrealized holding losses Estimated fair value Gross unrealized holding losses Estimated fair value Gross unrealized holding losses As of December 31, 2017 Corporate bonds and notes $ 3,799 $ (20 ) 2,125 $ (30 ) $ 5,924 $ (50 ) Municipal bonds 3,341 (18 ) 657 (9 ) 3,998 (27 ) $ 7,140 $ (38 ) $ 2,782 $ (39 ) $ 9,922 $ (77 )

Note 3 - Business Combination25

Note 3 - Business Combinations, Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]	Estimated useful lives As of December 31, (in years) 2017 2016 Tradename 5 to 7 $ 555 $ 555 Patents and technological know-how 10 8,578 6,010 Proprietary software 3 to 15 2,981 4,341 Other 3 to 5 323 324 Total intangible assets, gross 12,437 11,230 Accumulated amortization (5,894 ) (5,553 ) Total intangible assets, net $ 6,543 $ 5,677
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	Years ending December 31, 2018 $ 935 2019 831 2020 652 2021 652 2022 652 Thereafter 2,821 Total $ 6,543

Note 4 - Inventories (Tables)

Note 4 - Inventories (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Inventory Current and Noncurrent [Table Text Block]	As of December 31, 2017 2016 Current: Raw materials $ 197 $ 2,291 Finished goods 14,218 9,086 Total $ 14,415 $ 11,377 Long-term: Raw materials $ 2,682 $ 599 Finished goods 6,026 1,065 Total $ 8,708 $ 1,664

Note 5 - Property and Equipme27

Note 5 - Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Property, Plant and Equipment [Table Text Block]	Estimated useful lives As of December 31, in years 2017 2016 Office furniture and equipment 3 to 10 $ 4,904 $ 4,835 Leasehold improvements 1 to 6 1,509 1,495 Vehicles 5 to 10 160 - Manufacturing and test equipment 2 to 10 2,577 2,537 9,150 8,867 Accumulated depreciation and amortization (7,601 ) (7,354 ) Property and equipment, net $ 1,549 $ 1,513

Note 6 - Leases and Deferred 28

Note 6 - Leases and Deferred Rent (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	Years ending December 31, 2018 $ 762 2019 412 2020 182 2021 187 2022 193 Thereafter 472 Total minimum lease payments $ 2,208

Note 7 - Accrued Liabilities (T

Note 7 - Accrued Liabilities (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Accrued Liabilities [Table Text Block]	As of December 31, 2017 2016 Accrued salaries and other compensation $ 1,072 $ 1,098 Sales and marketing programs 435 319 Product warranty 245 246 Other accrued liabilities 91 231 Total $ 1,843 $ 1,894

Note 9 - Share-based Payments (

Note 9 - Share-based Payments (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	Year ended December 31, 2017 2016 2015 Risk-free interest rate, average 2.21 % 1.52 % 2.00 % Expected option life, average (in years) 7.9 6.1 6.1 Expected price volatility, average 40.71 % 43.75 % 44.30 % Expected dividend yield 2.83 % 1.71 % 1.10 %
Share-based Compensation, Stock Options, Activity [Table Text Block]	Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value As of December 31, 2014 1,040,081 $ 5.65 5.60 $ 4,286 Granted 56,666 13.03 Reinstated 4,583 4.47 Expired and canceled (1,000 ) 3.42 Forfeited prior to vesting (15,252 ) 7.85 Exercised (56,143 ) 5.51 As of December 31, 2015 1,028,935 $ 6.03 4.73 $ 7,104 Granted 217,700 11.73 Expired and canceled (4,186 ) 12.03 Forfeited prior to vesting (17,360 ) 10.67 Exercised (374,857 ) 4.46 As of December 31, 2016 850,232 $ 8.06 5.78 $ 3,001 Granted 105,000 9.90 Expired and canceled (3,144 ) 10.29 Forfeited prior to vesting (8,996 ) 11.01 Exercised (178,662 ) 5.90 As of December 31, 2017 764,430 $ 8.78 6.48 $ 1,038 Vested and Expected to Vest at December 31, 2015 1,028,935 $ 6.03 4.73 $ 7,104 Vested at December 31, 2015 820,022 $ 5.10 3.74 $ 6,419 Vested and Expected to Vest at December 31, 2016 850,232 $ 8.06 5.78 $ 3,001 Vested at December 31, 2016 552,097 $ 6.33 4.09 $ 2,843 Vested and Expected to Vest at December 31, 2017 764,430 $ 8.78 6.48 $ 1,038 Vested at December 31, 2017 529,669 $ 7.89 5.50 $ 1,033
Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity [Table Text Block]	2017 2016 201 5 Shares purchased under ESPP plans 9,110 9,140 14,982 Plan compensation expense $ 13 $ 18 $ 31
Class of Treasury Stock [Table Text Block]	$ in thousands except per share price Total Number of Shares Purchased (a) Average Price Paid per Share (b) Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs (c) Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs ($ thousands) (d) January 1 to March 31 78,956 $ 11.75 78,956 $ 9.9 April 1 to June 30 214,866 9.91 214,866 7.7 July 1 to September 30 139,570 7.84 139,570 6.6 October 1 to December 31 118,544 8.18 118,544 5.7 Total 551,936 $ 9.28 551,936

Note 10 - Significant Custome31

Note 10 - Significant Customers (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]	Year ended December 31, 2017 2016 2015 Customer A 16.1 % 16.3 % 14.2 % Customer B - %* - %* 10.4 % Total 16.1 % 16.3 % 24.6 % As of December 31, 2017 2016 Customer A 20.3 % 13.4 % Customer B 11.0 % 11.7 % Total 31.3 % 25.1 %

Note 11 - Fair Value Measurem32

Note 11 - Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	Level 1 Level 2 Level 3 Total December 31, 2017 Corporate bonds and notes $ — $ 8,428 $ — $ 8,428 Municipal bonds — 4,610 — 4,610 Total $ — $ 13,038 $ — $ 13,038 December 31, 2016 Corporate bonds and notes $ — $ 19,970 $ — $ 19,970 Municipal bonds — 6,425 — 6,425 Total $ — $ 26,395 $ — $ 26,395

Note 12 - Income Taxes (Tables)

Note 12 - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]	Year ended December 31, 2017 2016 2015 Domestic $ (12,630 ) $ 6,332 $ 13,295 Foreign (3,263 ) (2,454 ) (2,744 ) Total $ (15,893 ) $ 3,878 $ 10,551
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	Year ended December 31, 2017 2016 201 5 Current: Federal $ 577 $ (593 ) $ (3,386 ) State (66 ) 63 (344 ) Foreign (682 ) (37 ) - Total current (171 ) (567 ) (3,730 ) Deferred: Federal 1,497 (633 ) (220 ) State 480 (17 ) (10 ) Foreign 748 115 470 Total 2,725 (535 ) 240 Change in valuation allowance (833 ) (332 ) (285 ) Total deferred 1,892 (867 ) (45 ) Benefit/(provision) for income taxes $ 1,721 $ (1,434 ) $ (3,775 )
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Year ended December 31, 2017 2016 2015 Tax benefit (provision) at federal statutory rate $ 5,403 $ (1,318 ) $ (3,587 ) State income tax benefit (provision), net of federal benefit 439 (148 ) (408 ) Research and development tax credits 411 423 456 Subpart F inclusion (370 ) - - Foreign earnings or losses taxed at different rates (540 ) (292 ) (231 ) Tax rate change (3,161 ) - - Other 372 233 280 Change in valuation allowance (833 ) (332 ) (285 ) Tax benefit (provision) $ 1,721 $ (1,434 ) $ (3,775 )
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	2017 2016 Deferred revenue $ 738 $ 845 Basis difference in intangible assets 3,403 (56 ) Inventory reserve 2,089 2,650 Net operating loss carryforwards 1,627 1,391 Research and development tax credits 163 88 Accrued expenses 75 92 Stock-based compensation 327 584 Allowance for sales returns and doubtful accounts 119 70 Difference in property and equipment basis (212 ) (350 ) Other 438 743 Total net deferred income tax asset 8,767 6,057 Less: Valuation allowance (2,236 ) (1,403 ) Net deferred income tax asset (liability) $ 6,531 $ 4,654
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]	Year ended December 31, 2017 2016 Balance - beginning of year $ 1,189 $ 1,126 Additions based on tax positions related to the current year 67 16 Additions for tax positions of prior years 520 47 Reductions for tax positions of prior years - - Settlements (165 ) - Lapse in statutes of limitations (959 ) - Uncertain tax positions, ending balance $ 652 $ 1,189

Note 13 - Geographic Sales In34

Note 13 - Geographic Sales Information (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]	Year ended December 31, 2017 2016 201 5 United States $ 24,569 $ 31,838 $ 39,563 All other countries 17,235 16,799 18,233 Total $ 41,804 $ 48,637 $ 57,796

Note 1 - Business Description35

Note 1 - Business Description, Basis of Presentation and Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities			$ 0	$ 0	$ 0
Inventory, Net			14,415	11,377
Inventory, Noncurrent			$ 8,708	1,664
Number of Reporting Units			1
Goodwill, Impairment Loss	$ 12,724		$ 12,724
Impairment of Intangible Assets, Finite-lived			$ 769
Product Return Policy, Number Of Days			180 days
Product Return Policy, Not to Exceed Net Purchases During Preceeding Quarter, Percent			15.00%
Advertising Expense			$ 1,079	836	$ 728
Deferred Tax Assets, Valuation Allowance			$ 2,236	1,404
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			35.00%
Increase (Decrease) of Net Deferred Tax Assets			$ (3,300)
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability			3,300
Scenario, Forecast [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		21.00%
Customer Relationships [Member]
Impairment of Intangible Assets, Finite-lived			$ 769
Minimum [Member]
Property, Plant and Equipment, Useful Life			2 years
Finite-Lived Intangible Asset, Useful Life			3 years
Maximum [Member]
Property, Plant and Equipment, Useful Life			10 years
Finite-Lived Intangible Asset, Useful Life			10 years
Advance Replacement Units [Member]
Inventory, Net			$ 76	$ 21

Note 1 - Business Description36

Note 1 - Business Description, Basis of Presentation and Significant Accounting Policies - Allowance for Doubtful Accounts Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Balance at beginning of the year	$ 187	$ 54	$ 58
Allowance increase (decrease)	287	148	36
Write offs , net of recoveries	(2)	(15)	(40)
Balance at end of the year	$ 472	$ 187	$ 54

Note 1 - Business Description37

Note 1 - Business Description, Basis of Presentation and Significant Accounting Policies - Deferred Revenue and Associated Costs of Goods Sold and Gross Profit (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deferred revenue	$ 4,635	$ 3,882
Deferred cost of goods sold	1,555	1,530
Deferred gross profit	$ 3,080	$ 2,352

Note 1 - Business Description38

Note 1 - Business Description, Basis of Presentation and Significant Accounting Policies - Warranty Liability (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Balance at the beginning of year	$ 246	$ 288	$ 331
Accruals/additions	399	361	442
Usage/claims	(400)	(403)	(485)
Balance at end of year	$ 245	$ 246	$ 288

Note 1 - Business Description39

Note 1 - Business Description, Basis of Presentation and Significant Accounting Policies - Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net income/(loss)	$ (14,172)	$ 2,444	$ 6,776
Basic weighted average shares outstanding (in shares)	8,576,588	9,021,980	9,127,385
Dilutive common stock equivalents using treasury stock method (in shares)		284,054	467,274
Diluted weighted average shares outstanding (in shares)	8,576,588	9,306,034	9,594,659
Basic earnings per common share: (in dollars per share)	$ (1.65)	$ 0.27	$ 0.74
Diluted earnings per common share: (in dollars per share)	$ (1.65)	$ 0.26	$ 0.71
Weighted average options outstanding (in shares)	815,870	885,163	1,053,785
Anti-dilutive options not included in the computation (in shares)	815,870	323,644	177,125

Note 2 - Marketable Securitie40

Note 2 - Marketable Securities - Available-for-sale Securities by Major Security Type (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Amortized cost	$ 13,095	$ 26,491
Gross unrealized holding gains	20	70
Gross unrealized holding losses	(77)	(166)
Available-for-sale securities	13,038	26,395
Corporate Debt Securities [Member]
Amortized cost	8,458	20,028
Gross unrealized holding gains	19	64
Gross unrealized holding losses	(49)	(122)
Available-for-sale securities	8,428	19,970
US States and Political Subdivisions Debt Securities [Member]
Amortized cost	4,637	6,463
Gross unrealized holding gains	1	6
Gross unrealized holding losses	(28)	(44)
Available-for-sale securities	$ 4,610	$ 6,425

Note 2 - Marketable Securitie41

Note 2 - Marketable Securities - Maturities of Available-for-sale Securities (Details) $ in Thousands	Dec. 31, 2017USD ($)
Due within one year, amortized cost	$ 2,688
Due within one year, estimated fair value	2,688
Due after one year through five years, amortized cost	10,408
Due after one year through five years, estimated fair value	10,350
Total available-for-sale securities, amortized cost	13,096
Total available-for-sale securities, estimated fair value	$ 13,038

Note 2 - Marketable Securitie42

Note 2 - Marketable Securities - Available-for-sale Marketable Securities in Gross Unrealized Loss Position (Details) $ in Thousands	Dec. 31, 2017USD ($)
Estimated fair value, less than 12 months	$ 7,140
Gross unrealized holding losses, less than 12 months	(38)
Estimated fair value, more than 12 months	2,782
Gross unrealized holding losses, more than 12 months	(39)
Estimated fair value	9,922
Gross unrealized holding losses	(77)
Corporate Debt Securities [Member]
Estimated fair value, less than 12 months	3,799
Gross unrealized holding losses, less than 12 months	(20)
Estimated fair value, more than 12 months	2,125
Gross unrealized holding losses, more than 12 months	(30)
Estimated fair value	5,924
Gross unrealized holding losses	(50)
US States and Political Subdivisions Debt Securities [Member]
Estimated fair value, less than 12 months	3,341
Gross unrealized holding losses, less than 12 months	(18)
Estimated fair value, more than 12 months	657
Gross unrealized holding losses, more than 12 months	(9)
Estimated fair value	3,998
Gross unrealized holding losses	$ (27)

Note 3 - Business Combination43

Note 3 - Business Combinations, Goodwill and Intangible Assets (Details Textual) - USD ($)	3 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Goodwill, Period Increase (Decrease)			$ (12,724,000)
Goodwill		$ 0	12,724,000
Goodwill, Impairment Loss	$ 12,724,000	12,724,000
Amortization of Intangible Assets		$ 932,000	$ 1,121,000	$ 1,258,000

Note 3 - Business Combination44

Note 3 - Business Combinations, Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Intangible assets, gross	$ 12,437	$ 11,230
Accumulated amortization	(5,894)	(5,553)
Total	$ 6,543	5,677
Minimum [Member]
Estimated useful lives (Year)	3 years
Maximum [Member]
Estimated useful lives (Year)	10 years
Trade Names [Member]
Intangible assets, gross	$ 555	555
Trade Names [Member] | Minimum [Member]
Estimated useful lives (Year)	5 years
Trade Names [Member] | Maximum [Member]
Estimated useful lives (Year)	7 years
Patents and Technological Know-how [Member]
Estimated useful lives (Year)	10 years
Intangible assets, gross	$ 8,578	6,010
Proprietary Software [Member]
Intangible assets, gross	$ 2,981	4,341
Proprietary Software [Member] | Minimum [Member]
Estimated useful lives (Year)	3 years
Proprietary Software [Member] | Maximum [Member]
Estimated useful lives (Year)	15 years
Other Intangible Assets [Member]
Intangible assets, gross	$ 323	$ 324
Other Intangible Assets [Member] | Minimum [Member]
Estimated useful lives (Year)	3 years
Other Intangible Assets [Member] | Maximum [Member]
Estimated useful lives (Year)	5 years

Note 3 - Business Combination45

Note 3 - Business Combinations, Goodwill and Intangible Assets - Estimated Future Amortization Expense of Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
2,018	$ 935
2,019	831
2,020	652
2,021	652
2,022	652
Thereafter	2,821
Total	$ 6,543	$ 5,677

Note 4 - Inventories (Details T

Note 4 - Inventories (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Distributor Channel Inventories	$ 1,555	$ 1,530
Inventory Write-down	$ 649	$ 653	$ 496

Note 4 - Inventories - Inventor

Note 4 - Inventories - Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Raw materials	$ 197	$ 2,291
Finished goods	14,218	9,086
Total	14,415	11,377
Raw materials	2,682	599
Finished goods	6,026	1,065
Total	$ 8,708	$ 1,664

Note 5 - Property and Equipme48

Note 5 - Property and Equipment (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Depreciation	$ 599	$ 723	$ 801
Property, Plant and Equipment, Disposals	$ 128

Note 5 - Property and Equipme49

Note 5 - Property and Equipment - Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment, Gross	$ 9,150	$ 8,867
Accumulated Depreciation and Amortization	(7,601)	(7,354)
Property, Plant and Equipment, Net	1,549	1,513
Office Furniture and Equipment [Member]
Property, Plant and Equipment, Gross	4,904	4,835
Leasehold Improvements [Member]
Property, Plant and Equipment, Gross	1,509	1,495
Vehicles [Member]
Property, Plant and Equipment, Gross	160
Manufacturing and Test Equipment [Member]
Property, Plant and Equipment, Gross	$ 2,577	$ 2,537
Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	2 years
Minimum [Member] | Office Furniture and Equipment [Member]
Property, Plant and Equipment, Useful Life (Year)	3 years
Minimum [Member] | Leasehold Improvements [Member]
Property, Plant and Equipment, Useful Life (Year)	1 year
Minimum [Member] | Vehicles [Member]
Property, Plant and Equipment, Useful Life (Year)	5 years
Minimum [Member] | Manufacturing and Test Equipment [Member]
Property, Plant and Equipment, Useful Life (Year)	2 years
Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	10 years
Maximum [Member] | Office Furniture and Equipment [Member]
Property, Plant and Equipment, Useful Life (Year)	10 years
Maximum [Member] | Leasehold Improvements [Member]
Property, Plant and Equipment, Useful Life (Year)	6 years
Maximum [Member] | Vehicles [Member]
Property, Plant and Equipment, Useful Life (Year)	10 years
Maximum [Member] | Manufacturing and Test Equipment [Member]
Property, Plant and Equipment, Useful Life (Year)	10 years

Note 6 - Leases and Deferred 50

Note 6 - Leases and Deferred Rent (Details Textual) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)ft²	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Operating Leases, Rent Expense | $	$ 999	$ 1,099	$ 1,420
Amortization of Deferred Charges | $	$ 44	$ 73	$ 95
Facility in Gainesville [Member]
Area of Real Estate Property	5,000
Lessee, Operating Lease, Renewal Term	10 years
Facility in Hod Hasharon [Member]
Area of Real Estate Property	4,700
Lessee, Operating Lease, Renewal Term	2 years
Facility in Salt Lake City [Member]
Area of Real Estate Property	31,000
Warehouse in Shenzhen, China [Member]
Area of Real Estate Property	10,700
Facility in Austin, Texas [Member[
Area of Real Estate Property	7,070
Warehouse in Salt Lake City, Utah [Member]
Area of Real Estate Property	40,000

Note 6 - Leases and Deferred 51

Note 6 - Leases and Deferred Rent - Future Minimum Lease Payments (Details) $ in Thousands	Dec. 31, 2017USD ($)
2,018	$ 762
2,019	412
2,020	182
2,021	187
2,022	193
Thereafter	472
Total minimum lease payments	$ 2,208

Note 7 - Accrued Liabilities -

Note 7 - Accrued Liabilities - Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Accrued salaries and other compensation	$ 1,072	$ 1,098
Sales and marketing programs	435	319
Product warranty	245	246
Other accrued liabilities	91	231
Total	$ 1,843	$ 1,894

Note 8 - Commitments and Cont53

Note 8 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Long-term Purchase Commitment, Amount	$ 3,402
Unrecognized Tax Benefits	652	$ 1,189	$ 1,126
Other Accrued Liabilities, Noncurrent	927	152
Litigation for Intellectual Property Infringement [Member]
Litigation Settlement, Expense	408	$ 1,111
Litigation Settlement, Expense Capitalized	$ 2,289

Note 9 - Share-based Payments54

Note 9 - Share-based Payments (Details Textual) - USD ($)	Mar. 17, 2016	Dec. 31, 1999	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Jun. 30, 2005	Jun. 30, 2003	Jun. 30, 2002	Mar. 01, 2017	Dec. 12, 2016	Mar. 09, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross							105,000	217,700	56,666
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period							10 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number			764,430				764,430	850,232	1,028,935	1,040,081
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value							$ 3.31	$ 4.27	$ 5.27
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value							$ 646,000	$ 2,824,000	$ 404,000
Allocated Share-based Compensation Expense							665,000	667,000	848,000
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense							0	107,000	41,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options			$ 829,000				$ 829,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition							1 year 292 days
Stock Issued During Period, Value, Employee Stock Purchase Plan							$ 66,000	87,000	$ 155,000
Stock Repurchased During Period, Shares			118,544	139,570	214,866	78,956	551,936			272,767
Stock Repurchased During Period, Value							$ 5,119,000	$ 6,086,000		$ 2,598,000
Stock Repurchase Program, Authorized Amount																$ 10,000,000
Stock Repurchase Program, Additional Authorized Amount														$ 10,000,000
Directors and Officers [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period							3 years
Other Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period							4 years
The 1998 Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		1,066,000											1,248,250
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		9 years 292 days											6 years
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number											300,494	637,089
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized			2,500,000				2,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number			0				0
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares, Authorized and Unissued			0				0
The 2007 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized															2,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number			764,430				764,430
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares, Authorized and Unissued			774,456				774,456
The 2007 Equity Incentive Plan [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period							3 years
The 2007 Equity Incentive Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period							4 years
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized			500,000				500,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant			466,783				466,783
ESPP Participation Criteria, Maximum Percentage of Voting Power			5.00%				5.00%
Stock Issued During Period, Shares, Employee Stock Purchase Plans							9,110	9,140	14,982
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent							85.00%
Share-based Compensation Arrangement by Share-based Payment Award, Discount on Purchase Price of Common Stock, Percent							15.00%
Employee Stock Purchase Plan [Member] | Maximum [Member]
Stock Issued During Period, Shares, Employee Stock Purchase Plans							2,500
Stock Issued During Period, Value, Employee Stock Purchase Plan							$ 25,000
The 1998 Incentive Plan and 2007 Equity Incentive Plan [Member] | Employees and Directors [Member]
Stock Options Repurchased During Period, Shares	225,542
Stock Options Repurchase Program, Average Purchase Price Per Share	$ 7.77

Note 9 - Share-based Payments -

Note 9 - Share-based Payments - Black-scholes Assumptions (Details)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Risk-free interest rate, average	2.21%	1.52%	2.00%
Expected option life, average (in years) (Year)	7 years 328 days	6 years 36 days	6 years 36 days
Expected price volatility, average	40.71%	43.75%	44.30%
Expected dividend yield	2.83%	1.71%	1.10%

Note 9 - Share-based Payments56

Note 9 - Share-based Payments - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Number of shares, outstanding at beginning of period (in shares)	850,232	1,028,935	1,040,081
Weighted average exercise price, beginning of period (in dollars per share)	$ 8.06	$ 6.03	$ 5.65
Weighted average remaining contractual term (Year)	6 years 175 days	5 years 284 days	4 years 266 days	5 years 219 days
Aggregate intrinsic value	$ 1,038	$ 3,001	$ 7,104	$ 4,286
Number of shares, granted (in shares)	105,000	217,700	56,666
Weighted average exercise price, granted (in dollars per share)	$ 9.90	$ 11.73	$ 13.03
Number of shares, reinstated (in shares)			4,583
Weighted average exercise price, reinstated (in dollars per share)			$ 4.47
Number of shares, expired and canceled (in shares)	(3,144)	(4,186)	(1,000)
Weighted average exercise price, expired and canceled (in dollars per share)	$ 10.29	$ 12.03	$ 3.42
Number of shares, forfeited prior to vesting (in shares)	(8,996)	(17,360)	(15,252)
Weighted average exercise price, forfeited prior to vesting (in dollars per share)	$ 11.01	$ 10.67	$ 7.85
Number of shares, exercised (in shares)	(178,662)	(374,857)	(56,143)
Weighted average exercise price, exercised (in dollars per share)	$ 5.90	$ 4.46	$ 5.51
Number of shares, outstanding at end of period (in shares)	764,430	850,232	1,028,935	1,040,081
Weighted average exercise price, end of period (in dollars per share)	$ 8.78	$ 8.06	$ 6.03	$ 5.65
Number of shares, vested and expected to vest (in shares)	764,430	850,232	1,028,935
Weighted average exercise price, vested and expected to vest (in dollars per share)	$ 8.78	$ 8.06	$ 6.03
Weighted average remaining contractual term, vested and expected to vest (Year)	6 years 175 days	5 years 284 days	4 years 266 days
Aggregate intrinsic value, vested and expected to vest	$ 1,038	$ 3,001	$ 7,104
Number of shares, vested at end of period (in shares)	529,669	552,097	820,022
Weighted average exercise price, vested at end of period (in dollars per share)	$ 7.89	$ 6.33	$ 5.10
Weighted average remaining contractual term, vested (Year)	5 years 182 days	4 years 32 days	3 years 270 days
Aggregate intrinsic value, vested	$ 1,033	$ 2,843	$ 6,419

Note 9 - Share-based Payments57

Note 9 - Share-based Payments - Employee Stock Purchase Plans (Details) - Employee Stock Purchase Plan [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Shares purchased under ESPP plans (in shares)	9,110	9,140	14,982
Plan compensation expense	$ 13	$ 18	$ 31

Note 9 - Share-based Payments58

Note 9 - Share-based Payments - Stock Repurchase Program (Details) - USD ($)	3 Months Ended				12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2017	Dec. 31, 2014
Total number of shares purchased (in shares)	118,544	139,570	214,866	78,956	551,936	272,767
Average price paid per share (in dollars per share)	$ 8.18	$ 7.84	$ 9.91	$ 11.75	$ 9.28
Approximate dollar value of shares that may yet be purchased under the plans or programs	$ 5,700	$ 6,600	$ 7,700	$ 9,900	$ 5,700
Publicly Announced Stock Repurchase Program [Member]
Total number of shares purchased (in shares)	118,544	139,570	214,866	78,956	551,936

Note 10 - Significant Custome59

Note 10 - Significant Customers - Concentration Risk by Risk Factor of Sales Revenue and Accounts Receivable (Details) - Customer Concentration Risk [Member]		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Sales Revenue, Net [Member]
Concentration risk, percentage		16.10%	16.30%	24.60%
Sales Revenue, Net [Member] | Customer A [Member]
Concentration risk, percentage		16.10%	16.30%	14.20%
Sales Revenue, Net [Member] | Customer B [Member]
Concentration risk, percentage	[1]			10.40%
Accounts Receivable [Member]
Concentration risk, percentage		31.30%	25.10%
Accounts Receivable [Member] | Customer A [Member]
Concentration risk, percentage		20.30%	13.40%
Accounts Receivable [Member] | Customer B [Member]
Concentration risk, percentage	[1]	11.00%	11.70%
[1]	Sales didn't exceed 10% of the revenue.

Note 11 - Fair Value Measurem60

Note 11 - Fair Value Measurements - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Available-for-sale securities	$ 13,038	$ 26,395
Fair Value, Inputs, Level 1 [Member]
Available-for-sale securities
Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities	13,038	26,395
Fair Value, Inputs, Level 3 [Member]
Available-for-sale securities
Corporate Debt Securities [Member]
Available-for-sale securities	8,428	19,970
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Available-for-sale securities
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities	8,428	19,970
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Available-for-sale securities
US States and Political Subdivisions Debt Securities [Member]
Available-for-sale securities	4,610	6,425
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Available-for-sale securities
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities	4,610	6,425
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Available-for-sale securities

Note 12 - Income Taxes (Details

Note 12 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 647	$ 588
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	14	$ 87
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards	$ 692
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2029
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] | Earliest Tax Year [Member]
Open Tax Year	2,014
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] | Latest Tax Year [Member]
Open Tax Year	2,017
Foreign Tax Authority [Member] | Tax Authority, Spain [Member]
Operating Loss Carryforwards	$ 5,805
Foreign Tax Authority [Member] | Inland Revenue, Hong Kong [Member] | Earliest Tax Year [Member]
Income Tax Examination, Year under Examination	2,009
Foreign Tax Authority [Member] | Inland Revenue, Hong Kong [Member] | Latest Tax Year [Member]
Income Tax Examination, Year under Examination	2,011

Note 12 - Income Taxes - Consol

Note 12 - Income Taxes - Consolidated Income Before Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Domestic	$ (12,630)	$ 6,332	$ 13,295
Foreign	(3,263)	(2,454)	(2,744)
Income/(loss) before income taxes	$ (15,893)	$ 3,878	$ 10,551

Note 12 - Income Taxes - Provis

Note 12 - Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Federal	$ 577	$ (593)	$ (3,386)
State	(66)	63	(344)
Foreign	(682)	(37)
Total current	(171)	(567)	(3,730)
Federal	1,497	(633)	(220)
State	480	(17)	(10)
Foreign	748	115	470
Total	2,725	(535)	240
Change in valuation allowance	(833)	(332)	(285)
Total deferred	1,877	(439)	4
Tax benefit (provision)	$ 1,721	$ (1,434)	$ (3,775)

Note 12 - Income Taxes - Income

Note 12 - Income Taxes - Income Tax (Provision) for Federal Statutory Corporate Income Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Tax benefit (provision) at federal statutory rate	$ 5,403	$ (1,318)	$ (3,587)
State income tax benefit (provision), net of federal benefit	439	(148)	(408)
Research and development tax credits	411	423	456
Subpart F inclusion	(370)
Foreign earnings or losses taxed at different rates	(540)	(292)	(231)
Tax rate change	(3,161)
Other	372	233	280
Change in valuation allowance	(833)	(332)	(285)
Tax benefit (provision)	$ 1,721	$ (1,434)	$ (3,775)

Note 12 - Income Taxes - Net De

Note 12 - Income Taxes - Net Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deferred revenue	$ 738	$ 845
Basis difference in intangible assets	3,403	(56)
Inventory reserve	2,089	2,650
Net operating loss carryforwards	1,627	1,391
Research and development tax credits	163	88
Accrued expenses	75	92
Stock-based compensation	327	584
Allowance for sales returns and doubtful accounts	119	70
Difference in property and equipment basis	(212)	(350)
Other	438	743
Total net deferred income tax asset	8,767	6,057
Less: Valuation allowance	(2,236)	(1,403)
Net deferred income tax asset (liability)	$ 6,531	$ 4,654

Note 12 - Income Taxes - Reconc

Note 12 - Income Taxes - Reconciliation of Uncertain Tax Positions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Balance - beginning of year	$ 1,189	$ 1,126
Additions based on tax positions related to the current year	67	16
Additions for tax positions of prior years	520	47
Reductions for tax positions of prior years
Settlements	(165)
Lapse in statutes of limitations	(959)
Uncertain tax positions, ending balance	$ 652	$ 1,189

Note 13 - Geographic Sales In67

Note 13 - Geographic Sales Information - Revenue by Geographic Area (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenue	$ 41,804	$ 48,637	$ 57,796
UNITED STATES
Revenue	24,569	31,838	39,563
All Other Countries [Member]
Revenue	$ 17,235	$ 16,799	$ 18,233

Note 14 - Subsequent Events (De

Note 14 - Subsequent Events (Details Textual) - Subsequent Event [Member]	Feb. 21, 2018$ / shares
Dividends Payable, Amount Per Share	$ 0.07
Dividends Payable, Date to be Paid	Mar. 21, 2018
Dividends Payable, Date of Record	Mar. 7, 2018