Energy Recovery (ERII) 10-Q 4 May 17 2017 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2017	May 01, 2017
Document Information [Line Items]
Entity Registrant Name	Energy Recovery, Inc.
Entity Central Index Key	1,421,517
Trading Symbol	erii
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)		53,985,199
Document Type	10-Q
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q1
Amendment Flag	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 58,691	$ 61,364
Restricted cash	3,323	2,297
Short-term investments	38,668	39,073
Accounts receivable, net of allowance for doubtful accounts of $96 and $130 at March 31, 2017 and December 31, 2016, respectively	9,184	11,759
Unbilled receivables, current	2,216	190
Cost and estimated earnings in excess of billings	3,371	1,825
Inventories	4,824	4,550
Prepaid expenses and other current assets	1,867	1,311
Total current assets	122,144	122,369
Restricted cash, non-current	1,521	2,087
Deferred tax assets, non-current	1,427	1,270
Property and equipment, net of accumulated depreciation of $22,109 and $21,385 at March 31, 2017 and December 31, 2016, respectively	8,610	8,643
Goodwill	12,790	12,790
Other intangible assets, net	1,743	1,900
Other assets, non-current	2	4
Total assets	148,237	149,063
Current liabilities:
Accounts payable	1,824	1,505
Accrued expenses and other current liabilities	5,876	9,019
Income taxes payable	16	16
Accrued warranty reserve	398	406
Deferred revenue	5,898	6,201
Current portion of long-term debt	11	11
Total current liabilities	14,023	17,158
Long-term debt, net of current portion	25	27
Deferred tax liabilities, non-current	2,297	2,233
Deferred revenue, non-current	62,708	63,958
Other non-current liabilities	507	554
Total liabilities	79,560	83,930
Commitments and Contingencies (Note 9)
Stockholders’ equity:
Preferred stock, $0.001 par value; 10,000,000 shares authorized; no shares issued or outstanding
Common stock, $0.001 par value; 200,000,000 shares authorized; 57,651,383 shares issued and 53,929,727 shares outstanding at March 31, 2017, and 56,884,207 shares issued and 53,162,551, shares outstanding at December 31, 2016	58	57
Additional paid-in capital	143,641	139,676
Accumulated other comprehensive loss	(107)	(118)
Treasury stock at cost, 3,721,656 repurchased at March 31, 2017 and December 31, 2016	(16,210)	(16,210)
Accumulated deficit	(58,705)	(58,272)
Total stockholders’ equity	68,677	65,133
Total liabilities and stockholders’ equity	$ 148,237	$ 149,063

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Accounts receivable, allowance for doubtful accounts	$ 96	$ 130
Property and equipment, accumulated depreciation	$ 22,109	$ 21,385
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	57,651,383	56,884,207
Common stock, shares outstanding (in shares)	53,929,727	53,162,551
Treasury stock at cost, shares (in shares)	3,721,656	3,721,656

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Product revenue	$ 12,261	$ 10,051
Product cost of revenue	4,610	3,674
Product gross profit	7,651	6,377
License and development revenue	1,250	1,250
Operating expenses:
General and administrative	4,408	4,884
Sales and marketing	2,453	2,070
Research and development	2,509	2,665
Amortization of intangible assets	158	157
Total operating expenses	9,528	9,776
Loss from operations	(627)	(2,149)
Other expense:
Interest expense	(1)	(1)
Other non-operating income (expense)	118	(21)
Loss before income taxes	(510)	(2,171)
Benefit for income taxes	(77)	(205)
Net loss	$ (433)	$ (1,966)
Basic and diluted net loss per share (in dollars per share)	$ (0.01)	$ (0.04)
Shares used in basic and diluted per share calculation (in shares)	53,825	52,207

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net loss	$ (433)	$ (1,966)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	10	(12)
Unrealized gain on investments	1	1
Other comprehensive income (loss)	11	(11)
Comprehensive loss	$ (422)	$ (1,977)

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash Flows From Operating Activities
Net loss	$ (433)	$ (1,966)
Adjustments to reconcile net loss to net cash used in operating activities:
Share-based compensation	1,113	1,188
Depreciation and amortization	881	932
Amortization of premiums on investments	113	3
Change in fair value of put options		29
Valuation adjustments for excess or obsolete inventory	71	12
Provision for warranty claims	55
Provision for doubtful accounts	4	4
Unrealized (gain) loss on foreign currency transactions	(15)	53
Other non-cash adjustments	(31)	(44)
Reversal of accruals related to expired warranties	(63)	(33)
Deferred income taxes	(93)	(207)
Changes in operating assets and liabilities:
Accounts receivable	2,571	3,904
Accounts payable	189	727
Income taxes payable	(1)	(4)
Inventories	(345)	(234)
Prepaid and other assets	(553)	(385)
Cost and estimated earnings in excess of billings	(1,546)
Unbilled receivables	(2,026)	81
Accrued expenses and other liabilities	(3,162)	(2,825)
Net cash used in operating activities	(4,824)	(260)
Cash Flows From Investing Activities
Maturities of marketable securities	9,646
Purchases of marketable securities	(9,355)
Capital expenditures	(532)	(152)
Restricted cash	(460)	(335)
Net cash used in investing activities	(701)	(487)
Cash Flows From Financing Activities
Net proceeds from issuance of common stock	2,992	1,515
Tax payment for employee shares withheld	(153)
Repayment of long-term debt	(2)	(2)
Repurchase of common stock		(4,106)
Net cash provided by (used in) financing activities	2,837	(2,593)
Effect of exchange rate differences on cash and cash equivalents	15	(64)
Net change in cash and cash equivalents	(2,673)	(3,404)
Cash and cash equivalents, beginning of period	61,364	99,931
Cash and cash equivalents, end of period	58,691	96,527
Portion of Revenue of Product Sales Agreement for Installation, Startup, and Training [Member]
Changes in operating assets and liabilities:
Deferred revenue	(303)	(245)
Software License Arrangement [Member]
Changes in operating assets and liabilities:
Deferred revenue	$ (1,250)	$ (1,250)

Note 1 - The Company and Summar

Note 1 - The Company and Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2017
Notes to Financial Statements
Significant Accounting Policies [Text Block]	Note 1 — The Company and Summary of Significant Accounting Policies The Company Energy Recovery, Inc. (the “Company ,” “Energy Recovery,” “our,” “us,” and “we”) is an energy solutions provider to industrial fluid flow markets worldwide. Our core competencies are fluid dynamics and advanced material science. Our products make industrial processes more operating and capital expenditure efficient. Our solutions convert wasted pressure energy into a reusable asset and preserve or eliminate pumping technology in hostile processing environments. Our solutions are marketed and sold in fluid flow markets, such as water, oil & gas, and chemical processing, under the trademarks ERI ® ® ® ® ® ® Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. generally accept ed accounting principles (“GAAP”) requires our management to make judgments, assumptions, and estimates that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. The accounting policies that reflect our more significant estimates and judgments and that we believe are the most critical to aid in fully understanding and evaluating our reported financial results are revenue recognition, including percentage-of-completion accounting for oil & gas projects; allowance for doubtful accounts; allowance for product warranty; valuation of stock options; valuation and impairment of goodwill and acquired intangible assets; useful lives for depreciation and amortization; valuation adjustments for excess and obsolete inventory; deferred taxes and valuation allowances on deferred tax assets; and evaluation and measurement of contingencies. Those estimates could change, and as a result, actual results could differ materially from those estimates. For example, the Company records impairment losses on long-lived assets used in operations when events and circumstances indicate that long-lived assets might be impaired and the undiscounted cash flows estimated to be generated by those assets are less than the carrying amounts of those assets. The Company’s estimate of undiscounted cash flows, at March 31, 2017 December 31, 2016 may Basis of Presentation The condensed consolidated financial statements include the accounts of Energy Recovery, Inc. and its wholly-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated. The accompanying condensed consolidated financial statements have been prepared by us, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. The December 31, 2016 may March 31, 2017 December 31, 2016 10 March 10, 2017. In the opinion of management, all adjustments, consisting of on ly normal recurring adjustments that are necessary to present fairly the financial position, results of operations, and cash flows for the interim periods, have been made. The results of operations for the interim periods are not necessarily indicative of the operating results for the full fiscal year or any future periods. Recent Accounting Pronouncements In May 2014, 2014 09, Revenue from Contracts with Customers (Topic 606 ). 2014 09 December 15, 2016, July 9, 2015, one 2014 09. December 15, 2016). In March April 2016, 2016 08, Revenue from Contracts with Customers (Topic 606 ) : Principal versus Agent Considerations (Reporting Revenue Gross versus Net) 2016 10, Revenue from Contracts with Customers (Topic 606) . two 606: 2016 08 2016 10 2014 09 We expect to adopt the guidance of ASU 2014 09 January 1, 2018. 2014 09 2014, We continue to evaluate the effect that ASU 2014 09 may 2017. In January 2016, ASB issued ASU No. 2016 01, Financial Instruments - Overall (Subtopic 825 10): s 2016 01 2016 01 December 15, 2017, In February 2016, 2016 02, Leases (Topic 842). 2016 02 840, 2016 02 December 15, 2018, In March 2016, 2016 09, Compensation – Stock Compensation (Topic 718). 2016 09 2016 09 December 15, 2016, January 1, 2017. three March 31, 2017 $0.2 In August 2016, 2016 15, Statement of Cash Flows (Topic 230) : Classification of Certain Cash Receipts and Cash Payments. 2016 15 230. eight 2016 15 December 15, 2017 In October 2016, 2016 16, Income Taxes (Topic 740): 2016 16 2016 16 January 1, 2018, In November 2016, 2016 18, Statement of Cash Flows (Topic 230): 2016 18 2016 18 2016 18 January 1, 2018, In January 2017, 2017 04, Goodwill and Other (Topic 350): 2017 04 2 December 15, 2019. January 1, 2017.

Note 2 - Goodwill and Other Int

Note 2 - Goodwill and Other Intangible Assets	3 Months Ended
	Mar. 31, 2017
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	Note 2 — Goodwill and Other Intangible Assets Goodwill was $12.8 March 31, 2017 December 31, 2016, December 2009. three March 31, 2017, no no The components of identifiable other intangible assets, all of which are finite-lived, as of the dates indicated were as follows (in thousands): March 31, 2017 Gross Carrying Amount Accumulated Amortization Accumulated Impairment Losses Net Carrying Amount Developed technology $ 6,100 $ (4,473 ) $ — $ 1,627 Non-compete agreements 1,310 (1,310 ) — — Backlog 1,300 (1,300 ) — — Trademarks 1,200 (180 ) (1,020 ) — Customer relationships 990 (990 ) — — P atents 585 (427 ) (42 ) 116 Total $ 11,485 $ (8,680 ) $ (1,062 ) $ 1,743 December 31, 2016 Gross Carrying Amount Accumulated Amortization Accumulated Impairment Losses Net Carrying Amount Developed technology $ 6,100 $ (4,321 ) $ — $ 1,779 Non-compete agreements 1,310 (1,310 ) — — Backlog 1,300 (1,300 ) — — Trademarks 1,200 (180 ) (1,020 ) — Customer relationships 990 (990 ) — — P atents 585 (422 ) (42 ) 121 Total $ 11,485 $ (8,523 ) $ (1,062 ) $ 1,900 Accumulated imp airment losses at March 31, 2017 December 31, 2016 2012 2007 2010.

Note 3 - Loss Per Share

Note 3 - Loss Per Share	3 Months Ended
	Mar. 31, 2017
Notes to Financial Statements
Earnings Per Share [Text Block]	Note 3 — Loss per Share Basic and diluted net loss per share is based on the weighted average number of common shares outstanding during the period. Potential dilutive securities are excluded from the calculation of loss per share, as their inclusion would be anti-dilutive. The following table shows the c omputation of basic and diluted loss per share (in thousands, except per share data): Three Months Ended March 31, 2017 2016 N umerator: Net loss $ (433 ) $ (1,966 ) Denominator: Basic and diluted weighted average common shares outstanding 53,825 52,207 Basic and diluted net loss per share $ (0.01 ) $ (0.04 ) The following potential common shares were excluded from the computation of diluted loss per share because their effect would have been anti-dilutive (in thousands): Three Months Ended March 31, 2017 2016 Stock Options 5,561 7,432 Restricted stock unit awards 313 205

Note 4 - Other Financial Inform

Note 4 - Other Financial Information	3 Months Ended
	Mar. 31, 2017
Notes to Financial Statements
Additional Financial Information Disclosure [Text Block]	Note 4 — Other Financial Information Restricted Cash We have pledged cash in connection with certain stand-by letters of credit and company credit cards. We have deposited corresponding amounts into accounts at several financial institutions for these items as follows (in thousands): March 31, 2017 December 31, 2016 Collateral for credit cards $ 702 $ — Collateral for stand-by letters of credit 2,621 2,297 Current restricted cash $ 3,323 $ 2,297 Collateral for credit cards $ 95 $ — Collateral for stand-by letters of credit 1,426 2,087 Non-current restricted cash $ 1,521 $ 2,087 Total restricted cash $ 4,844 $ 4,384 Inventories Our i nventories are stated at the lower of cost (using the first first March 31, 2017 December 31, 2016 Raw materials $ 1,581 $ 1,783 Work in process 1,538 1,146 Finished goods 1,705 1,621 Inventories, net $ 4,824 $ 4,550 Prepaid and Other Current Assets Prepaid expenses and other current assets consisted of the following (in thousands): March 31, 2017 December 31, 2016 Interest receivable $ 227 $ 272 Supplier advances 581 73 Other prepaid expenses and current assets 1,059 966 Total prepaid expenses and other current assets $ 1,867 $ 1,311 Accrued Expenses and Other Current Liabilities Accrued expense s and other current liabilities consisted of the following (in thousands): March 31, 2017 December 31, 2016 Payroll and commissions payable $ 2,684 $ 5,697 Accrued legal expenses , current 185 122 Unbilled project costs 1,474 1,069 Other accrued expenses and current liabilities 1,533 2,131 Total a ccrued expenses and other current liabilities $ 5,876 $ 9,019 Accumulated Other Comprehensive Loss Changes in accumulated other comprehensive loss by component for the three March 31, 2017, Foreign Currency Translation Adjustments Net of Tax Benefit Unrealized Gains (Losses) on Investments Total Accumulated Other Comprehensive Loss Balance, December 31, 201 6 $ (90 ) $ (28 ) $ (118 ) Net other comprehensive income 10 1 11 Balance, March 31, 2017 $ (80 ) $ (27 ) $ (107 ) There were no reclassifications of amounts out of accumulated other comprehensive loss, as there have been no sales of securities or translation adjustments that impacted other comprehensive loss during the quarter. The tax impact of the changes in accumulated other comprehensive loss were not material.

Note 5 - Investments

Note 5 - Investments	3 Months Ended
	Mar. 31, 2017
Notes to Financial Statements
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	Note 5 — Investments Our short-term investments are all classified as available-for-sale. There were no March 31, 2017. Available-for-s ale securities as of the dates indicated consisted of the following (in thousands): March 31, 201 7 Amortized Cost Gross Unrealized Holding Gains Gross Unrealized Holding Losses Fair Value Corporate notes and bonds $ 38,698 $ — $ (30 ) $ 38,668 Total short-term investments $ 38,698 $ — $ (30 ) $ 38,668 December 31 , 201 6 Amortized Cost Gross Unrealized Holding Gains Gross Unrealized Holding Losses Fair Value Corporate notes and bonds $ 39,100 $ 6 $ (33 ) $ 39,073 Total short-term investments $ 39,100 $ 6 $ (33 ) $ 39,073 G ross unrealized losses and fair values of our investments in an unrealized loss position as of the dates indicated, aggregated by investment category and length of time that the security has been in a continuous loss position, were as follows (in thousands): March 31, 201 7 Less than 12 months 12 months or greater Total Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Corporate notes and bonds $ 36,878 $ (30 ) $ — $ — $ 36,878 $ (30 ) Total $ 36,878 $ (30 ) $ — $ — $ 36,878 $ (30 ) December 31, 201 6 Less than 12 months 12 months or greater Total Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Corporate notes and bonds $ 29,667 $ (33 ) $ — $ — $ 29,667 $ (33 ) Total $ 29,667 $ (33 ) $ — $ — $ 29,667 $ (33 ) Expected maturities can differ from contractual maturities because borrowers may March 31, 2017 March 31, 2017 Amortized Cost Fair Value Due in one year or less $ 38,698 $ 38,668 Total available-for-sale securities $ 38,698 $ 38,668

Note 6 - Long-term Debt and Lin

Note 6 - Long-term Debt and Lines of Credit	3 Months Ended
	Mar. 31, 2017
Notes to Financial Statements
Debt Disclosure [Text Block]	Note 6 — Long-Term Debt and Line of Credit Debt In March 2015 , we entered into a loan agreement with a financial institution for a $55,000 6.35%. April 2, 2020. Long-term debt consisted of the following (in thousands) : March 31, 2017 December 31, 2016 Loan payable $ 36 $ 38 Less: current portion (11 ) (11 ) Total long-term debt $ 25 $ 27 Future minimum principal payments due under long-term debt arrangements consist of the following (in thousands): March 31, 2017 2017 (remaining 9 months) $ 9 2018 11 2019 12 2020 4 Total long-term debt $ 36 Line of Credit In June 2012, June 2015, $16.0 $16 1.25%. 0.25% 101% January 24, 2017. 105% At March 31, 2017 December 31, 2016, $2.9 $3.1 March 31, 2017 December 31, 2016, $3.1 $3.1 March 31, 2017 December 31, 2016, On January 27, 2017, $16.0 $4.0 0.7% 1.5%. 2%. 0.2% $16.0 The Loan and Pledge Agreement was amended on March 17, 2017 $4.1 $5.1 March 31, 2017 December 31, 2016, $3.0 $0.3 $0 $0.3 March 31, 2017 December 31, 2016, At March 31, 2017 December 31, 2016, collateralized by restricted cash at another financial institution totaling $1.0 $1.0 $1.0 $1.0 March 31, 2017 December 31, 2016, Restricted cash related to all stand-by letters of credit at March 31, 2017 December 31, 2016 $4.1 $4.4

Note 7 - Equity

Note 7 - Equity	3 Months Ended
	Mar. 31, 2017
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	Note 7 — Equity Stock Repurchase Program In March 2017, $15.0 tanding common stock through September 30, 2017. March 31, 2017 no In January 2016, $6.0 June 30, 2016 “January May 2016, January $10.0 October 31, 2016 “May December 31, 2016, 673,700 $4.1 January 568,500 $5.3 May May October 2016 December 31, 2016. S hare-B ased Compensation Expense For the three March 31, 2017 2016, Three Months Ended March 31, 2017 2016 Cost of revenue $ 49 $ 38 General and administrative 567 884 Sales and marketing 237 159 Research and development 260 107 Total share-based compensation expense $ 1,113 $ 1,188 Stock Option Plan In June 2016, 2016 s”), restricted stock (“RS” or “RSA”), stock units (“RSUs”), performance units, performance shares, and other stock-based awards to employees, officers, directors, and consultants. Prior to the approval of the Plan, we maintained the Amended and Restated 2008 four ten 4,441,083 3,830,000 611,083 7,635,410 may Stock Option Activity The following table summarizes the stock option activity under the Plan and includes options granted under all previous plans. Options Outstanding Options Weighted Average Exercise Price Weighted Average Remaining Contractual Life (in Years) Aggregate Intrinsic Value (2) Balance December 31, 2016 5,882,861 $ 4.81 6.3 $ 32,683,000 Granted 519,986 $ 10.12 — — Exercised (733,826 ) $ 4.08 — — Forfeited (108,230 ) $ 5.09 — — Balance March 31, 2017 5,560,791 $ 5.39 6.9 $ 17,588,000 Vested and exercisable as of March 31, 2017 3,307,584 $ 4.59 5.8 $ 12,413,000 Vested and exercisable as of March 31, 2017 and expected to vest thereafter (1) 5,127,558 $ 5.24 6.8 $ 16,787,000 (1) Options that are expect ed to vest are net of estimated future option forfeitures in accordance with the provisions of ASC 718. Compensation – Stock Compensation.” (2) The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying options and the fair value of our common stock as of March 31, 2017 December 31, 2016 $8.32 $10.35 As of March 31, 2017, option awards, net of estimated forfeitures, was $6.1 3.0 Restricted Stock Unit Activity The following table summarizes the restricted stock unit activity under the Plan and includes restricted stock units granted under all previous plans. Units Weighted Average Grant-Date Fair Value Per Unit Unvested at December 31, 2016 213,514 $ 8.65 Awarded 161,415 $ 10.15 Vested (51,122 ) $ 8.52 Forfeited (10,681 ) $ 8.52 Unvested at March 31, 2017 313,126 $ 9.45 As of March 31, 2017, was $2.1 3.4

Note 8 - Income Taxes

Note 8 - Income Taxes	3 Months Ended
	Mar. 31, 2017
Notes to Financial Statements
Income Tax Disclosure [Text Block]	Note 8 — Income Taxes The effective tax rate for the three March 31, 2017 2016 14.6% 9.4%, December 31, 2016, $21.1 three March 31, 2017,

Note 9 - Commitments and Contin

Note 9 - Commitments and Contingencies	3 Months Ended
	Mar. 31, 2017
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	Note 9 — Commitments and Contingencies Operating Lease Obligations We lease facilities under fixed non-cancellable operating leases that expire on various dates through July 2021. March 31, 2017 2017 (remaining 9 months) $ 1,294 2018 1,662 2019 1,460 2020 59 2021 34 Total future minimum lease payments $ 4,509 Product Warranty The following table summarizes the activity related to the product warranty liability d uring the three March 31, 2017 2016 Three Months Ended March 31, 2017 2016 Balance, beginning of period $ 406 $ 461 Warranty costs charged to cost of revenue 55 — Release of accrual for expired warranties (63 ) (33 ) Balance, end of period $ 398 $ 428 Purchase Obligations We enter into purchase order arrangements with our vendors. As of March 31, 2017, March 31, 2017, $7.3 Guarantees We enter into indemnification provisions under our agreements with other companies in the ordinary course of business, typically with customers. Under these provisions, we generally indemnify and hold harmless the indemnified party for losses suffered or incurred by the indemnified party as a result of our activities, generally limited to personal injury and property damage caused by our employees at a customer’s desalination plant in proportion to the employee’s percentage of fault for the accident. Damages incurred for these indemnifications would be covered by our general liability insurance to the extent provided by the policy limitations. We have not incurred material costs to defend lawsuits or settle claims related to these indemnification agreements. As a result, the estimated fair value of these agreements is not material. Accordingly, we have no March 31, 2017 December 31, 2016. In certain cases, we issue warranty and product performance guarantees to our customers for amounts generally equal to 10% twenty four (24) sixty eight (68) March 31, 2017 December 31, 2016, $6.9 $4.4 Litigation The Company is named in and subject to various proceedings and claims in connection with our business. We are contesting the allegations in these claims, and we believe that there are meritorious defenses in each of these matters. The outcome of matters we have been and currently are involved in cannot be determined at this time, and the results cannot be predicted with certainty. There can be no assurance that these matters will not have a material adverse effect on our results of operations in any future period and a significant judgment could have a material adverse impact on our financial condition, results of operations and cash flows. We may On September 10, 2014, October 24, 2014, 1”). November 13, 2015, may On November 24, 2014, second 1, 2, 1. the Company has determined that an award to Mr. Blanco is not probable. While a loss may O n January 20 27, 2015, two Joseph Sabatino v. Energy Recovery, Inc. et al . 3:15 00265 , Thomas C. Mowdy v. Energy Recovery, Inc , et al 3:15 00374 In Re Energy Recovery Inc. Securities Litigation 3:15 00265 . 10(b), 10b 5, 20(a) 1934 October 12, 2016, April 11, 2017, August 24, 2017. On February 18, 2016, Goldberg v . Rooney, et al 16804359, may On July 27, 2016, G erald McManiman v . Gay , et al 16824960, (“Individual Defendants”) and naming the Company as a nominal defendant. The complaint is styled as a derivative action being brought on behalf of the Company and generally alleges breach of fiduciary duties and violations of laws against the Individual Defendants. Based on currently available information and review with outside counsel, the Company is not able to estimate a potential loss, if any, due to the early stage of the matter. While a loss may

Note 10 - Business Segment and

Note 10 - Business Segment and Geographic Information	3 Months Ended
	Mar. 31, 2017
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	Note 10 — Business Segment and Geographic Information We manufacture and sell high-efficiency energy recovery devices and pumps as well as related products and services. Our chief operating decision-maker (“CODM”) is the chief executive officer (“CEO”). Our reportable operating segments consist of the Water Segment and the Oil & Gas Segment. These segments are based on the industries in which the products are sold, the type of energy recovery device sold, and the related products and services. The Water Segment consists of revenue associated with products sold for use in reverse osmosis water desalination, as well as the related identifiable expenses. The Oil & Gas Segment consists of product revenue associated with products sold for use in gas processing, chemical processing, and hydraulic fracturing and license and development revenue associated with hydraulic fracturing, as well as related identifiable expenses. Operating income for each segment excludes other income and expenses and certain expenses managed outside the operating segment. Costs excluded from operating income include various corporate expenses such as income taxes and other separately managed general and administrative expenses not related to the identified segments. Assets and liabilities are reviewed at the consolidated level by the CODM and are not accounted for by segment. The CODM allocates resources to and assesses the performance of each operating segment using information about its revenue and operating income (loss). The following summari zes financial information by segment for the periods presented (in thousands): Three Months Ended March 31, 201 7 Three Months Ended March 31, 201 6 Water Oil &Gas Total Water Oil &Gas Total Product revenue $ 10,716 $ 1,545 $ 12,261 $ 10,051 $ — $ 10,051 Product c ost of revenue 3,522 1,088 4,610 3,674 — 3,674 Product g ross profit 7,194 457 7,651 6,377 — 6,377 License and development revenue — 1,250 1,250 — 1,250 1,250 Operating expenses: General and administrative 318 349 667 219 188 407 Sales and marketing 1,499 641 2,140 1,129 807 1,936 Research and development 262 2,246 2,508 359 2,297 2,656 Amortization of intangibles 158 — 158 157 — 157 Total o perating expenses 2,237 3,236 5,473 1,864 3,292 5,156 Operating income (loss) $ 4,957 $ (1,529 ) 3,428 $ 4,513 $ (2,042 ) 2,471 Less: Corporate operating expenses 4,055 4,620 Consolidated operating loss (627 ) (2,149 ) Non-operating income (expenses) 117 (22 ) Loss before income taxes $ (510 ) $ (2,171 ) The following geographic information includes net revenue to our domestic and international customers based on the customers’ requested delivery locations, except for certain cases in which the customer directed us to deliver our products to a location that differs from the known ultimate location of use. In such cases, the ultimate location of use, rather than the delivery location, is reflected in the table below (in thousands, except percentages): Three Months Ended March 31, 2017 2016 Domestic product revenue $ 287 $ 185 International product revenue 11,974 9,866 Total product revenue $ 12,261 $ 10,051 Product revenue by country: Oman 34 % * % India 13 % * % Saudi Arabia 13 % 1 % Egypt 11 % 1 % United States 2 % 2 % Qatar * % 39 % Spain 4 % 11 % Others** 23 % 46 % Total 100 % 100 % * Less than 1% ** Includes remaining countries not separately disclosed. No country in this line item accounted for more than 10% A ll of our long-lived assets were located in the United States at March 31, 2017 December 31, 2016.

Note 11 - Concentrations

Note 11 - Concentrations	3 Months Ended
	Mar. 31, 2017
Notes to Financial Statements
Concentration Risk Disclosure [Text Block]	Note 1 1 — Concentrations Customers accounting for 10% or more of our accounts receivable and unbilled receivables were as follows: March 31, 2017 December 31, 2016 Customer A 27 % * % Customer B 23 % 16 % Customer C 10 % 6 % Customer D * % 13 % * Less than 1% Revenue from customers representing 10% product revenue varies from period to period. For the periods indicated, customers representing 10% Three Months Ended March 31, 2017 2016 Customer A 34 % * % Customer B 13 % * % Customer E * % 41 % * Less than 1% No other customer accounted for more than 10% One 100% three March 31, 2017 2016. Vendors accounting for 10% March 31, 2017 December 31, 2016 Vendor A * % 18 % * Less than 1%

Note 12 - Fair Value Measuremen

Note 12 - Fair Value Measurements	3 Months Ended
	Mar. 31, 2017
Notes to Financial Statements
Fair Value Disclosures [Text Block]	Note 1 2 — Fair Value Measurements The authoritative guidance for measuring fair value provides a hierarchy that prioritizes the inputs to valuation techniques used in measuring fair value as follows: Level 1 — Quoted prices (unadjusted) in active markets for identical assets or liabilities; Level 2 — Inputs other than quoted prices included within Level 1 Level 3 The carrying values of cash and cash equivalents, restricted cash, accounts receivable, unbilled receivables, accounts payable, and other accrued expenses approximate fair value due to the short-term maturity of those instruments. For our investments in available-for-sale securities, if quoted prices in active markets for identical investments are not available to determine fair value (Level 1), 2). 2 The fair value of financial assets and liabilities measured on a recurring basis for the indicated periods was as follows (in thousands): March 31, 2017 Level 1 Inputs Level 2 Inputs Level 3 Inputs Assets: A vailable-for-sale securities $ 38,668 $ — $ 38,668 $ — Total assets $ 38,668 $ — $ 38,668 $ — December 31, 201 6 Level 1 Inputs Level 2 Inputs Level 3 Inputs Assets: A vailable-for-sale securities $ 39,073 $ — $ 39,073 $ — Total assets $ 39,073 $ — $ 39,073 $ —

Note 13 - Related Party Transac

Note 13 - Related Party Transactions	3 Months Ended
	Mar. 31, 2017
Notes to Financial Statements
Related Party Transactions Disclosure [Text Block]	Note 13 — Related Party Transactions In the first 2017 , the Company extended an employee loan to one $21,786. six March 31, 2017 $21,786.

Note 14 - Subsequent Events

Note 14 - Subsequent Events	3 Months Ended
	Mar. 31, 2017
Notes to Financial Statements
Subsequent Events [Text Block]	Note 14 S ubsequent Events On April 5, 2017, nnounced a licensing agreement with Alderley plc. The 10

Significant Accounting Policies

Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Use of Estimates, Policy [Policy Text Block]	Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. generally accept ed accounting principles (“GAAP”) requires our management to make judgments, assumptions, and estimates that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. The accounting policies that reflect our more significant estimates and judgments and that we believe are the most critical to aid in fully understanding and evaluating our reported financial results are revenue recognition, including percentage-of-completion accounting for oil & gas projects; allowance for doubtful accounts; allowance for product warranty; valuation of stock options; valuation and impairment of goodwill and acquired intangible assets; useful lives for depreciation and amortization; valuation adjustments for excess and obsolete inventory; deferred taxes and valuation allowances on deferred tax assets; and evaluation and measurement of contingencies. Those estimates could change, and as a result, actual results could differ materially from those estimates. For example, the Company records impairment losses on long-lived assets used in operations when events and circumstances indicate that long-lived assets might be impaired and the undiscounted cash flows estimated to be generated by those assets are less than the carrying amounts of those assets. The Company’s estimate of undiscounted cash flows, at March 31, 2017 December 31, 2016 may
Basis of Accounting, Policy [Policy Text Block]	Basis of Presentation The condensed consolidated financial statements include the accounts of Energy Recovery, Inc. and its wholly-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated. The accompanying condensed consolidated financial statements have been prepared by us, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. The December 31, 2016 may March 31, 2017 December 31, 2016 10 March 10, 2017. In the opinion of management, all adjustments, consisting of on ly normal recurring adjustments that are necessary to present fairly the financial position, results of operations, and cash flows for the interim periods, have been made. The results of operations for the interim periods are not necessarily indicative of the operating results for the full fiscal year or any future periods.
New Accounting Pronouncements, Policy [Policy Text Block]	Recent Accounting Pronouncements In May 2014, 2014 09, Revenue from Contracts with Customers (Topic 606 ). 2014 09 December 15, 2016, July 9, 2015, one 2014 09. December 15, 2016). In March April 2016, 2016 08, Revenue from Contracts with Customers (Topic 606 ) : Principal versus Agent Considerations (Reporting Revenue Gross versus Net) 2016 10, Revenue from Contracts with Customers (Topic 606) . two 606: 2016 08 2016 10 2014 09 We expect to adopt the guidance of ASU 2014 09 January 1, 2018. 2014 09 2014, We continue to evaluate the effect that ASU 2014 09 may 2017. In January 2016, ASB issued ASU No. 2016 01, Financial Instruments - Overall (Subtopic 825 10): s 2016 01 2016 01 December 15, 2017, In February 2016, 2016 02, Leases (Topic 842). 2016 02 840, 2016 02 December 15, 2018, In March 2016, 2016 09, Compensation – Stock Compensation (Topic 718). 2016 09 2016 09 December 15, 2016, January 1, 2017. three March 31, 2017 $0.2 In August 2016, 2016 15, Statement of Cash Flows (Topic 230) : Classification of Certain Cash Receipts and Cash Payments. 2016 15 230. eight 2016 15 December 15, 2017 In October 2016, 2016 16, Income Taxes (Topic 740): 2016 16 2016 16 January 1, 2018, In November 2016, 2016 18, Statement of Cash Flows (Topic 230): 2016 18 2016 18 2016 18 January 1, 2018, In January 2017, 2017 04, Goodwill and Other (Topic 350): 2017 04 2 December 15, 2019. January 1, 2017.

Note 2 - Goodwill and Other I22

Note 2 - Goodwill and Other Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2017
Notes Tables
Schedule of Finite-Lived Intangible Assets [Table Text Block]	March 31, 2017 Gross Carrying Amount Accumulated Amortization Accumulated Impairment Losses Net Carrying Amount Developed technology $ 6,100 $ (4,473 ) $ — $ 1,627 Non-compete agreements 1,310 (1,310 ) — — Backlog 1,300 (1,300 ) — — Trademarks 1,200 (180 ) (1,020 ) — Customer relationships 990 (990 ) — — P atents 585 (427 ) (42 ) 116 Total $ 11,485 $ (8,680 ) $ (1,062 ) $ 1,743 December 31, 2016 Gross Carrying Amount Accumulated Amortization Accumulated Impairment Losses Net Carrying Amount Developed technology $ 6,100 $ (4,321 ) $ — $ 1,779 Non-compete agreements 1,310 (1,310 ) — — Backlog 1,300 (1,300 ) — — Trademarks 1,200 (180 ) (1,020 ) — Customer relationships 990 (990 ) — — P atents 585 (422 ) (42 ) 121 Total $ 11,485 $ (8,523 ) $ (1,062 ) $ 1,900

Note 3 - Loss Per Share (Tables

Note 3 - Loss Per Share (Tables)	3 Months Ended
	Mar. 31, 2017
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three Months Ended March 31, 2017 2016 N umerator: Net loss $ (433 ) $ (1,966 ) Denominator: Basic and diluted weighted average common shares outstanding 53,825 52,207 Basic and diluted net loss per share $ (0.01 ) $ (0.04 )
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]	Three Months Ended March 31, 2017 2016 Stock Options 5,561 7,432 Restricted stock unit awards 313 205

Note 4 - Other Financial Info24

Note 4 - Other Financial Information (Tables)	3 Months Ended
	Mar. 31, 2017
Notes Tables
Restrictions on Cash and Cash Equivalents [Table Text Block]	March 31, 2017 December 31, 2016 Collateral for credit cards $ 702 $ — Collateral for stand-by letters of credit 2,621 2,297 Current restricted cash $ 3,323 $ 2,297 Collateral for credit cards $ 95 $ — Collateral for stand-by letters of credit 1,426 2,087 Non-current restricted cash $ 1,521 $ 2,087 Total restricted cash $ 4,844 $ 4,384
Schedule of Inventory, Current [Table Text Block]	March 31, 2017 December 31, 2016 Raw materials $ 1,581 $ 1,783 Work in process 1,538 1,146 Finished goods 1,705 1,621 Inventories, net $ 4,824 $ 4,550
Schedule of Other Current Assets [Table Text Block]	March 31, 2017 December 31, 2016 Interest receivable $ 227 $ 272 Supplier advances 581 73 Other prepaid expenses and current assets 1,059 966 Total prepaid expenses and other current assets $ 1,867 $ 1,311
Schedule of Accrued Liabilities [Table Text Block]	March 31, 2017 December 31, 2016 Payroll and commissions payable $ 2,684 $ 5,697 Accrued legal expenses , current 185 122 Unbilled project costs 1,474 1,069 Other accrued expenses and current liabilities 1,533 2,131 Total a ccrued expenses and other current liabilities $ 5,876 $ 9,019
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	Foreign Currency Translation Adjustments Net of Tax Benefit Unrealized Gains (Losses) on Investments Total Accumulated Other Comprehensive Loss Balance, December 31, 201 6 $ (90 ) $ (28 ) $ (118 ) Net other comprehensive income 10 1 11 Balance, March 31, 2017 $ (80 ) $ (27 ) $ (107 )

Note 5 - Investments (Tables)

Note 5 - Investments (Tables)	3 Months Ended
	Mar. 31, 2017
Notes Tables
Available-for-sale Securities [Table Text Block]	March 31, 201 7 Amortized Cost Gross Unrealized Holding Gains Gross Unrealized Holding Losses Fair Value Corporate notes and bonds $ 38,698 $ — $ (30 ) $ 38,668 Total short-term investments $ 38,698 $ — $ (30 ) $ 38,668 December 31 , 201 6 Amortized Cost Gross Unrealized Holding Gains Gross Unrealized Holding Losses Fair Value Corporate notes and bonds $ 39,100 $ 6 $ (33 ) $ 39,073 Total short-term investments $ 39,100 $ 6 $ (33 ) $ 39,073
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block]	March 31, 201 7 Less than 12 months 12 months or greater Total Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Corporate notes and bonds $ 36,878 $ (30 ) $ — $ — $ 36,878 $ (30 ) Total $ 36,878 $ (30 ) $ — $ — $ 36,878 $ (30 ) December 31, 201 6 Less than 12 months 12 months or greater Total Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Corporate notes and bonds $ 29,667 $ (33 ) $ — $ — $ 29,667 $ (33 ) Total $ 29,667 $ (33 ) $ — $ — $ 29,667 $ (33 )
Investments Classified by Contractual Maturity Date [Table Text Block]	March 31, 2017 Amortized Cost Fair Value Due in one year or less $ 38,698 $ 38,668 Total available-for-sale securities $ 38,698 $ 38,668

Note 6 - Long-term Debt and L26

Note 6 - Long-term Debt and Lines of Credit (Tables)	3 Months Ended
	Mar. 31, 2017
Notes Tables
Schedule of Long-term Debt Instruments [Table Text Block]	March 31, 2017 December 31, 2016 Loan payable $ 36 $ 38 Less: current portion (11 ) (11 ) Total long-term debt $ 25 $ 27
Schedule of Maturities of Long-term Debt [Table Text Block]	March 31, 2017 2017 (remaining 9 months) $ 9 2018 11 2019 12 2020 4 Total long-term debt $ 36

Note 7 - Equity (Tables)

Note 7 - Equity (Tables)	3 Months Ended
	Mar. 31, 2017
Notes Tables
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]	Three Months Ended March 31, 2017 2016 Cost of revenue $ 49 $ 38 General and administrative 567 884 Sales and marketing 237 159 Research and development 260 107 Total share-based compensation expense $ 1,113 $ 1,188
Share-based Compensation, Stock Options, Activity [Table Text Block]	Options Outstanding Options Weighted Average Exercise Price Weighted Average Remaining Contractual Life (in Years) Aggregate Intrinsic Value (2) Balance December 31, 2016 5,882,861 $ 4.81 6.3 $ 32,683,000 Granted 519,986 $ 10.12 — — Exercised (733,826 ) $ 4.08 — — Forfeited (108,230 ) $ 5.09 — — Balance March 31, 2017 5,560,791 $ 5.39 6.9 $ 17,588,000 Vested and exercisable as of March 31, 2017 3,307,584 $ 4.59 5.8 $ 12,413,000 Vested and exercisable as of March 31, 2017 and expected to vest thereafter (1) 5,127,558 $ 5.24 6.8 $ 16,787,000
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]	Units Weighted Average Grant-Date Fair Value Per Unit Unvested at December 31, 2016 213,514 $ 8.65 Awarded 161,415 $ 10.15 Vested (51,122 ) $ 8.52 Forfeited (10,681 ) $ 8.52 Unvested at March 31, 2017 313,126 $ 9.45

Note 9 - Commitments and Cont28

Note 9 - Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2017
Notes Tables
Lessee, Operating Lease, Disclosure [Table Text Block]	March 31, 2017 2017 (remaining 9 months) $ 1,294 2018 1,662 2019 1,460 2020 59 2021 34 Total future minimum lease payments $ 4,509
Schedule of Product Warranty Liability [Table Text Block]	Three Months Ended March 31, 2017 2016 Balance, beginning of period $ 406 $ 461 Warranty costs charged to cost of revenue 55 — Release of accrual for expired warranties (63 ) (33 ) Balance, end of period $ 398 $ 428

Note 10 - Business Segment an29

Note 10 - Business Segment and Geographic Information (Tables)	3 Months Ended
	Mar. 31, 2017
Notes Tables
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]	Three Months Ended March 31, 201 7 Three Months Ended March 31, 201 6 Water Oil &Gas Total Water Oil &Gas Total Product revenue $ 10,716 $ 1,545 $ 12,261 $ 10,051 $ — $ 10,051 Product c ost of revenue 3,522 1,088 4,610 3,674 — 3,674 Product g ross profit 7,194 457 7,651 6,377 — 6,377 License and development revenue — 1,250 1,250 — 1,250 1,250 Operating expenses: General and administrative 318 349 667 219 188 407 Sales and marketing 1,499 641 2,140 1,129 807 1,936 Research and development 262 2,246 2,508 359 2,297 2,656 Amortization of intangibles 158 — 158 157 — 157 Total o perating expenses 2,237 3,236 5,473 1,864 3,292 5,156 Operating income (loss) $ 4,957 $ (1,529 ) 3,428 $ 4,513 $ (2,042 ) 2,471 Less: Corporate operating expenses 4,055 4,620 Consolidated operating loss (627 ) (2,149 ) Non-operating income (expenses) 117 (22 ) Loss before income taxes $ (510 ) $ (2,171 )
Revenue from External Customers by Geographic Areas [Table Text Block]	Three Months Ended March 31, 2017 2016 Domestic product revenue $ 287 $ 185 International product revenue 11,974 9,866 Total product revenue $ 12,261 $ 10,051 Product revenue by country: Oman 34 % * % India 13 % * % Saudi Arabia 13 % 1 % Egypt 11 % 1 % United States 2 % 2 % Qatar * % 39 % Spain 4 % 11 % Others** 23 % 46 % Total 100 % 100 %

Note 11 - Concentrations (Table

Note 11 - Concentrations (Tables)	3 Months Ended
	Mar. 31, 2017
Accounts Payable, Major Suppliers [Member] | Supplier Concentration Risk [Member]
Notes Tables
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]	March 31, 2017 December 31, 2016 Vendor A * % 18 %
Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Notes Tables
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]	Three Months Ended March 31, 2017 2016 Customer A 34 % * % Customer B 13 % * % Customer E * % 41 %
Accounts Receivable [Member] | Customer Concentration Risk [Member]
Notes Tables
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]	March 31, 2017 December 31, 2016 Customer A 27 % * % Customer B 23 % 16 % Customer C 10 % 6 % Customer D * % 13 %

Note 12 - Fair Value Measurem31

Note 12 - Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2017
Notes Tables
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	March 31, 2017 Level 1 Inputs Level 2 Inputs Level 3 Inputs Assets: A vailable-for-sale securities $ 38,668 $ — $ 38,668 $ — Total assets $ 38,668 $ — $ 38,668 $ — December 31, 201 6 Level 1 Inputs Level 2 Inputs Level 3 Inputs Assets: A vailable-for-sale securities $ 39,073 $ — $ 39,073 $ — Total assets $ 39,073 $ — $ 39,073 $ —

Note 1 - The Company and Summ32

Note 1 - The Company and Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Payments Related to Tax Withholding for Share-based Compensation	$ 153

Note 2 - Goodwill and Other I33

Note 2 - Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Goodwill	$ 12,790	$ 12,790
Goodwill, Period Increase (Decrease)	0
Goodwill, Impaired, Accumulated Impairment Loss	$ 0

Note 2 - Goodwill and Other I34

Note 2 - Goodwill and Other Intangible Assets - Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Gross carrying amount	$ 11,485	$ 11,485
Accumulated amortization	(8,680)	(8,523)
Accumulated impairment losses	(1,062)	(1,062)
Net carrying amount	1,743	1,900
Developed Technology Rights [Member]
Gross carrying amount	6,100	6,100
Accumulated amortization	(4,473)	(4,321)
Accumulated impairment losses
Net carrying amount	1,627	1,779
Noncompete Agreements [Member]
Gross carrying amount	1,310	1,310
Accumulated amortization	(1,310)	(1,310)
Accumulated impairment losses
Net carrying amount
Order or Production Backlog [Member]
Gross carrying amount	1,300	1,300
Accumulated amortization	(1,300)	(1,300)
Accumulated impairment losses
Net carrying amount
Trademarks [Member]
Gross carrying amount	1,200	1,200
Accumulated amortization	(180)	(180)
Accumulated impairment losses	(1,020)	(1,020)
Net carrying amount
Customer Relationships [Member]
Gross carrying amount	990	990
Accumulated amortization	(990)	(990)
Accumulated impairment losses
Net carrying amount
Patents [Member]
Gross carrying amount	585	585
Accumulated amortization	(427)	(422)
Accumulated impairment losses	(42)	(42)
Net carrying amount	$ 116	$ 121

Note 3 - Loss Per Share - Compu

Note 3 - Loss Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Numerator:
Net loss	$ (433)	$ (1,966)
Denominator:
Basic and diluted weighted average common shares outstanding (in shares)	53,825	52,207
Basic and diluted net loss per share (in dollars per share)	$ (0.01)	$ (0.04)

Note 3 - Loss Per Share - Antid

Note 3 - Loss Per Share - Antidilutive Securities Excluded From Computation of Diluted Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Employee Stock Option [Member]
Antidilutive securities excluded from computation of earnings per share (in shares)	5,561	7,432
Restricted Stock Units (RSUs) [Member]
Antidilutive securities excluded from computation of earnings per share (in shares)	313	205

Note 4 - Other Financial Info37

Note 4 - Other Financial Information - Restricted Cash (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Current restricted cash	$ 3,323,000	$ 2,297,000
Non-current restricted cash	1,521,000	2,087,000
Total restricted cash	4,844,000	4,384,000
Collateral for Credit Cards [Member]
Current restricted cash	702,000
Non-current restricted cash	95,000
Collateral for Standby Letters of Credit [Member]
Current restricted cash	2,621,000	2,297,000
Non-current restricted cash	1,426,000	2,087,000
Total restricted cash	$ 4,100,000	$ 4,400,000

Note 4 - Other Financial Info38

Note 4 - Other Financial Information - Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Raw materials	$ 1,581	$ 1,783
Work in process	1,538	1,146
Finished goods	1,705	1,621
Inventories, net	$ 4,824	$ 4,550

Note 4 - Other Financial Info39

Note 4 - Other Financial Information - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Interest receivable	$ 227	$ 272
Supplier advances	581	73
Other prepaid expenses and current assets	1,059	966
Total prepaid expenses and other current assets	$ 1,867	$ 1,311

Note 4 - Other Financial Info40

Note 4 - Other Financial Information - Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Payroll and commissions payable	$ 2,684	$ 5,697
Accrued legal expenses, current	185	122
Unbilled project costs	1,474	1,069
Other accrued expenses and current liabilities	1,533	2,131
Total accrued expenses and other current liabilities	$ 5,876	$ 9,019

Note 4 - Other Financial Info41

Note 4 - Other Financial Information - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Balance	$ 65,133
Net other comprehensive income	11	$ (11)
Balance	68,677
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	(90)
Net other comprehensive income	10
Balance	(80)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Balance	(28)
Net other comprehensive income	1
Balance	(27)
AOCI Attributable to Parent [Member]
Balance	(118)
Net other comprehensive income	11
Balance	$ (107)

Note 5 - Investments (Details T

Note 5 - Investments (Details Textual) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)
Proceeds from Sale of Available-for-sale Securities	$ 0

Note 5 - Investments - Availabl

Note 5 - Investments - Available-for-sale Securities (Details) - Short-term Investments [Member] - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Amortized cost	$ 38,698	$ 39,100
Gross unrealized holding gains		6
Gross unrealized holding losses	(30)	(33)
Fair value	38,668	39,073
Corporate Debt Securities [Member]
Amortized cost	38,698	39,100
Gross unrealized holding gains		6
Gross unrealized holding losses	(30)	(33)
Fair value	$ 38,668	$ 39,073

Note 5 - Investments - Gross Un

Note 5 - Investments - Gross Unrealized Losses and Fair Values of Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Fair value, less than 12 month	$ 36,878	$ 29,667
Gross unrealized losses, less than 12 months	(30)	(33)
Fair value, 12 months or greater
Gross unrealized losses, 12 months or greater
Fair value, total	36,878	29,667
Gross unrealized losses, total	(30)	(33)
Corporate Debt Securities [Member]
Fair value, less than 12 month	36,878	29,667
Gross unrealized losses, less than 12 months	(30)	(33)
Fair value, 12 months or greater
Gross unrealized losses, 12 months or greater
Fair value, total	36,878	29,667
Gross unrealized losses, total	$ (30)	$ (33)

Note 5 - Investments - Maturity

Note 5 - Investments - Maturity of Available-for-sale Securities (Details) $ in Thousands	Mar. 31, 2017USD ($)
Due in one year or less, amortized cost	$ 38,698
Due in one year or less, fair value	38,668
Total available-for-sale securities, amortized cost	38,698
Total available-for-sale securities, fair value	$ 38,668

Note 6 - Long-term Debt and L46

Note 6 - Long-term Debt and Lines of Credit (Details Textual) - USD ($)	Jan. 27, 2017	Jun. 30, 2012	Mar. 31, 2017	Mar. 17, 2017	Mar. 16, 2017	Jan. 24, 2017	Dec. 31, 2016	Mar. 31, 2015
Long-term Debt			$ 36,000
Restricted Cash and Cash Equivalents			4,844,000				$ 4,384,000
Collateral for Standby Letters of Credit [Member]
Restricted Cash and Cash Equivalents			4,100,000				4,400,000
March Two Thousand Fifteen Installment Loan [Member]
Long-term Debt			36,000				38,000	$ 55,000
Debt Instrument, Interest Rate, Stated Percentage								6.35%
The 2012 Agreement [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 16,000,000
Cash Collateral Balance Required by Credit Agreement		101.00%				105.00%
The 2012 Agreement [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage		0.25%
The 2012 Agreement [Member] | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate		1.25%
The 2009 Agreement [Member] | Collateral for Standby Letters of Credit [Member]
Restricted Cash and Cash Equivalents			3,100,000				3,100,000
The 2009 Agreement [Member] | Standby Letters of Credit [Member]
Long-term Line of Credit			2,900,000				3,100,000
Loan and Pledge Agreement [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.20%
Standby Letters of Credit, Fee Percentage	0.70%
Debt Instrument, Default, Additional Interest Rate	2.00%
Loan and Pledge Agreement [Member] | Collateral for Standby Letters of Credit [Member]
Restricted Cash and Cash Equivalents			0				300,000
Loan and Pledge Agreement [Member] | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	1.50%
Loan and Pledge Agreement [Member] | Standby Letters of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity				$ 5,100,000	$ 4,100,000
Long-term Line of Credit			3,000,000				300,000
Loan and Pledge Agreement [Member] | Committed Revolving Credit Line [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 16,000,000
Loan and Pledge Agreement [Member] | Uncommitted Revolving Credit Line [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 4,000,000
Agreement with Unspecified Financial Institution [Member] | Collateral for Standby Letters of Credit [Member]
Restricted Cash and Cash Equivalents			1,000,000				1,000,000
Agreement with Unspecified Financial Institution [Member] | Standby Letters of Credit [Member]
Long-term Line of Credit			$ 1,000,000				$ 1,000,000

Note 6 - Long-term Debt and L47

Note 6 - Long-term Debt and Lines of Credit - Long-term Debt (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2015
Loan payable	$ 36,000
Less: current portion	(11,000)	$ (11,000)
Total long-term debt	25,000	27,000
March Two Thousand Fifteen Installment Loan [Member]
Loan payable	36,000	38,000	$ 55,000
Less: current portion	(11,000)	(11,000)
Total long-term debt	$ 25,000	$ 27,000

Note 6 - Long-term Debt and L48

Note 6 - Long-term Debt and Lines of Credit - Future Minimum Principal Payments Due Under Long-term Debt Arrangements (Details) $ in Thousands	Mar. 31, 2017USD ($)
2017 (remaining 9 months)	$ 9
2,018	11
2,019	12
2,020	4
Loan payable	$ 36

Note 7 - Equity (Details Textua

Note 7 - Equity (Details Textual) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended	4 Months Ended	6 Months Ended
	Mar. 31, 2017	Mar. 31, 2017	Oct. 31, 2016	Jun. 30, 2016	Dec. 31, 2016	Jan. 30, 2016
Stock Repurchase Program, Authorized Amount	$ 15	$ 15	$ 10			$ 6
Treasury Stock, Shares, Acquired	0		568,500	673,700
Treasury Stock, Value, Acquired, Cost Method			$ 5.3	$ 4.1
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		4 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period		10 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	4,441,083	4,441,083
Share Price	$ 8.32	$ 8.32			$ 10.35
Employee Stock Option [Member]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 6.1	$ 6.1
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition		3 years
Restricted Stock Units (RSUs) [Member]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 2.1	$ 2.1
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition		3 years 146 days
The 2016 Incentive Plan [Member]
Common Stock, Capital Shares Reserved for Future Issuance	3,830,000	3,830,000
The 2016 Incentive Plan [Member] | Employee Stock Options Created under New Plan [Member]
Common Stock, Capital Shares Reserved for Future Issuance	611,083	611,083
The 2016 Incentive Plan [Member] | Employee Stock Options Unissued under Prior Plan [Member]
Common Stock, Capital Shares Reserved for Future Issuance	7,635,410	7,635,410

Note 7 - Equity - Share-based C

Note 7 - Equity - Share-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Share-based compensation expense	$ 1,113	$ 1,188
Cost of Sales [Member]
Share-based compensation expense	49	38
General and Administrative Expense [Member]
Share-based compensation expense	567	884
Selling and Marketing Expense [Member]
Share-based compensation expense	237	159
Research and Development Expense [Member]
Share-based compensation expense	$ 260	$ 107

Note 7 - Equity - Stock Option

Note 7 - Equity - Stock Option Activity (Details) - USD ($)		3 Months Ended	12 Months Ended
		Mar. 31, 2017	Dec. 31, 2016
Shares (in shares)		5,882,861
Weighted Average Exercise Price (in dollars per share)		$ 4.81
Weighted Average Remaining Contractual Life (Year)		6 years 328 days	6 years 109 days
Aggregate Intrinsic Value	[1]	$ 17,588,000	$ 32,683,000
Shares, Granted (in shares)		519,986
Weighted Average Exercise Price, Granted (in dollars per share)		$ 10.12
Shares, Exercised (in shares)		(733,826)
Weighted Average Exercise Price, Exercised (in dollars per share)		$ 4.08
Shares, Forfeited (in shares)		(108,230)
Weighted Average Exercise Price, Forfeited (in dollars per share)		$ 5.09
Shares (in shares)		5,560,791	5,882,861
Weighted Average Exercise Price (in dollars per share)		$ 5.39	$ 4.81
Vested and exercisable as of March 31, 2017 (in shares)		3,307,584
Vested and exercisable as of March 31, 2017 (in dollars per share)		$ 4.59
Vested and exercisable as of March 31, 2017 (Year)		5 years 292 days
Vested and exercisable as of March 31, 2017	[1]	$ 12,413,000
Vested and exercisable as of March 31, 2017 and expected to vest thereafter (in shares)	[2]	5,127,558
Vested and exercisable as of March 31, 2017 and expected to vest thereafter (in dollars per share)	[2]	$ 5.24
Vested and exercisable as of March 31, 2017 and expected to vest thereafter (Year)	[2]	6 years 292 days
Vested and exercisable as of March 31, 2017 and expected to vest thereafter	[1],[2]	$ 16,787,000
[1]	The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying options and the fair value of our common stock as of March 31, 2017 and December 31, 2016 of $8.32 and $10.35 per share respectively.
[2]	Options that are expected to vest are net of estimated future option forfeitures in accordance with the provisions of ASC 718. "Compensation - Stock Compensation."

Note 7 - Equity - Restricted St

Note 7 - Equity - Restricted Stock Activity (Details) - Restricted Stock [Member]	3 Months Ended
	Mar. 31, 2017$ / sharesshares
Unvested (in shares) | shares	213,514
Weighted Average Grant-Date Fair Value (in dollars per share) | $ / shares	$ 8.65
Shares, Awarded (in shares) | shares	161,415
Weighted Average Grant-Date Fair Value, Awarded (in dollars per share) | $ / shares	$ 10.15
Shares, Vested (in shares) | shares	(51,122)
Weighted Average Grant-Date Fair Value, Vested (in dollars per share) | $ / shares	$ 8.52
Shares, Forfeited (in shares) | shares	(10,681)
Weighted Average Grant-Date Fair Value, Forfeited (in dollars per share) | $ / shares	$ 8.52
Unvested (in shares) | shares	313,126
Weighted Average Grant-Date Fair Value (in dollars per share) | $ / shares	$ 9.45

Note 8 - Income Taxes (Details

Note 8 - Income Taxes (Details Textual) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Effective Income Tax Rate Reconciliation, Percent	14.60%	9.40%
Deferred Tax Assets, Valuation Allowance			$ 21.1

Note 9 - Commitments and Cont54

Note 9 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Long-term Purchase Commitment, Amount	$ 7,300
Warranty and Product Performance Guarantees as Percentage of Total Sales Agreement	10.00%
Indemnification Agreement [Member]
Guarantor Obligations, Current Carrying Value	$ 0	$ 0
Standby Letters of Credit [Member]
Letters of Credit Outstanding, Amount	$ 6,900	$ 4,400
Minimum [Member]
Warranty and Product Performance Guarantees, Period	2 years
Maximum [Member]
Warranty and Product Performance Guarantees, Period	5 years 240 days

Note 9 - Commitments and Cont55

Note 9 - Commitments and Contingencies - Operating Lease Obligations (Details) $ in Thousands	Mar. 31, 2017USD ($)
2017 (remaining 9 months)	$ 1,294
2,018	1,662
2,019	1,460
2,020	59
2,021	34
Total future minimum lease payments	$ 4,509

Note 9 - Commitments and Cont56

Note 9 - Commitments and Contingencies - Product Warranty Liability (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Balance, beginning of period	$ 406	$ 461
Warranty costs charged to cost of revenue	55
Release of accrual for expired warranties	(63)	(33)
Balance, end of period	$ 398	$ 428

Note 10 - Business Segment an57

Note 10 - Business Segment and Geographic Information - Summary of Financial Information by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Product revenue	$ 12,261	$ 10,051
Product cost of revenue	4,610	3,674
Product gross profit	7,651	6,377
License and development revenue	1,250	1,250
General and administrative	4,408	4,884
Sales and marketing	2,453	2,070
Research and development	2,509	2,665
Amortization of intangible assets	158	157
Total operating expenses	9,528	9,776
Loss from operations	(627)	(2,149)
Non-operating income (expenses)	117	(22)
Loss before income taxes	(510)	(2,171)
Operating Segments [Member]
Product revenue	12,261	10,051
Product cost of revenue	4,610	3,674
Product gross profit	7,651	6,377
License and development revenue	1,250	1,250
General and administrative	667	407
Sales and marketing	2,140	1,936
Research and development	2,508	2,656
Amortization of intangible assets	158	157
Total operating expenses	5,473	5,156
Loss from operations	3,428	2,471
Corporate, Non-Segment [Member]
Total operating expenses	4,055	4,620
Water [Member]
Loss from operations
Non-operating income (expenses)
Loss before income taxes
Water [Member] | Operating Segments [Member]
Product revenue	10,716	10,051
Product cost of revenue	3,522	3,674
Product gross profit	7,194	6,377
License and development revenue
General and administrative	318	219
Sales and marketing	1,499	1,129
Research and development	262	359
Amortization of intangible assets	158	157
Total operating expenses	2,237	1,864
Loss from operations	4,957	4,513
Water [Member] | Corporate, Non-Segment [Member]
Total operating expenses
Oil and Gas [Member]
Loss from operations
Non-operating income (expenses)
Loss before income taxes
Oil and Gas [Member] | Operating Segments [Member]
Product revenue	1,545
Product cost of revenue	1,088
Product gross profit	457
License and development revenue	1,250	1,250
General and administrative	349	188
Sales and marketing	641	807
Research and development	2,246	2,297
Amortization of intangible assets
Total operating expenses	3,236	3,292
Loss from operations	(1,529)	(2,042)
Oil and Gas [Member] | Corporate, Non-Segment [Member]
Total operating expenses

Note 10 - Business Segment an58

Note 10 - Business Segment and Geographic Information - Revenues by Geographic Area (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017		Mar. 31, 2016
Product revenue		$ 12,261		$ 10,051
Product revenue, percentage		100.00%		100.00%
Domestic [Member]
Product revenue		$ 287		$ 185
International [Member]
Product revenue		$ 11,974		$ 9,866
OMAN | Sales Revenue, Net [Member] | Geographic Concentration Risk [Member]
Product revenue, percentage		34.00%			[1]
INDIA | Sales Revenue, Net [Member] | Geographic Concentration Risk [Member]
Product revenue, percentage		13.00%			[1]
SAUDI ARABIA | Sales Revenue, Net [Member] | Geographic Concentration Risk [Member]
Product revenue, percentage		13.00%		1.00%
EGYPT | Sales Revenue, Net [Member] | Geographic Concentration Risk [Member]
Product revenue, percentage		11.00%		1.00%
UNITED STATES | Sales Revenue, Net [Member] | Geographic Concentration Risk [Member]
Product revenue, percentage		2.00%		2.00%
QATAR | Sales Revenue, Net [Member] | Geographic Concentration Risk [Member]
Product revenue, percentage			[1]	39.00%
SPAIN | Sales Revenue, Net [Member] | Geographic Concentration Risk [Member]
Product revenue, percentage		4.00%		11.00%
Others [Member] | Sales Revenue, Net [Member] | Geographic Concentration Risk [Member]
Product revenue, percentage	[2]	23.00%		46.00%
[1]	Less than 1% or none.
[2]	Includes remaining countries not separately disclosed. No country in this line item accounted for more than 10% of our product revenue during the periods presented.

Note 11 - Concentrations (Detai

Note 11 - Concentrations (Details Textual)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Concentration Risk, Percentage	100.00%	100.00%
License and Development Revenue [Member] | Customer Concentration Risk [Member] | Customer F [Member]
Number of Major Customers	1	1
Concentration Risk, Percentage	100.00%	100.00%

Note 11 - Concentrations - Acco

Note 11 - Concentrations - Accounts Receivable Concentrations (Details)	3 Months Ended			12 Months Ended
	Mar. 31, 2017		Mar. 31, 2016	Dec. 31, 2016
Percentage of accounts receivable	100.00%		100.00%
Customer A [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]
Percentage of accounts receivable	27.00%				[1]
Customer B [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]
Percentage of accounts receivable	23.00%			16.00%
Customer C [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]
Percentage of accounts receivable	10.00%			6.00%
Customer D [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]
Percentage of accounts receivable		[1]		13.00%
[1]	Less than 1% or none.

Note 11 - Concentrations - Reve

Note 11 - Concentrations - Revenue Concentrations (Details)	3 Months Ended
	Mar. 31, 2017		Mar. 31, 2016
Product revenue, percentage	100.00%		100.00%
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Customer A [Member]
Product revenue, percentage	34.00%			[1]
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Customer B [Member]
Product revenue, percentage	13.00%			[1]
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Customer E [Member]
Product revenue, percentage		[1]	41.00%
[1]	Less than 1% or none.

Note 11 - Concentrations - Supp

Note 11 - Concentrations - Supplier Concentrations (Details)	3 Months Ended			12 Months Ended
	Mar. 31, 2017		Mar. 31, 2016	Dec. 31, 2016
Vendor A	100.00%		100.00%
Accounts Payable, Major Suppliers [Member] | Supplier Concentration Risk [Member] | Vendor A [Member]
Vendor A		[1]		18.00%
[1]	Less than 1% or none.

Note 12 - Fair Value Measurem63

Note 12 - Fair Value Measurements - Fair Value of Financial Assets and Liabilities Measured on a Recurring Basis (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Fair value	$ 38,668	$ 39,073
Total assets	38,668	39,073
Fair Value, Inputs, Level 1 [Member]
Fair value
Total assets
Fair Value, Inputs, Level 2 [Member]
Fair value	38,668	39,073
Total assets	38,668	39,073
Fair Value, Inputs, Level 3 [Member]
Fair value
Total assets

Note 13 - Related Party Trans64

Note 13 - Related Party Transactions (Details Textual) - Unspecified Employee [Member] - Non-interest Bearing Loan [Member]	3 Months Ended
	Mar. 31, 2017USD ($)
Related Party Transaction, Due from (to) Related Party, Current	$ 21,786
Related Party Transaction, Due from Related Parties, Repayment Term	180 days

Note 14 - Subsequent Events (De

Note 14 - Subsequent Events (Details Textual)	Apr. 05, 2017
Subsequent Event [Member] | Alderley plc [Member]
Licensing Agreement, Term	10 years