ACM Research (ACMR) 10-Q 9 Aug 18 2018 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Aug. 07, 2018
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2
Trading Symbol	ACMR
Entity Registrant Name	ACM RESEARCH, INC.
Entity Central Index Key	1,680,062
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Common Class A [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		13,963,257
Common Class B [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		1,918,423

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 17,435	$ 17,681
Accounts receivable, less allowance for doubtful accounts of $0 as of June 30, 2018 and $0 as of December 31, 2017 (note 3)	33,289	26,762
Other receivables	1,308	2,491
Inventory (note 4)	27,531	15,388
Prepaid expenses	2,316	546
Other current assets	0	46
Total current assets	81,879	62,914
Property, plant and equipment, net (note 5)	3,050	2,340
Intangible assets, net	231	106
Deferred tax assets (note 15)	1,278	1,294
Investment in affiliates, equity method (note 10)	1,355	1,237
Other long-term assets	40	0
Total assets	87,833	67,891
Current liabilities:
Short-term borrowings (note 6)	9,932	5,095
Warrant liability (note 8)	0	3,079
Accounts payable	17,755	7,419
Advances from customers	1,931	143
Income tax payable	231	44
Other payables and accrued expenses (note 7)	6,518	6,037
Total current liabilities	36,367	21,817
Other long-term liabilities (note 9)	5,869	6,217
Total liabilities	42,236	28,034
Commitments and contingencies (note 16)
Stockholders' equity (deficit):
Additional paid in capital	55,331	49,695
Accumulated deficit	(9,526)	(9,961)
Accumulated other comprehensive income (loss)	(209)	122
Total stockholders’ equity	45,597	39,857
Total liabilities and stockholders’ equity	87,833	67,891
Common Class A [Member]
Stockholders' equity (deficit):
Common stock	1	1
Common Class B [Member]
Stockholders' equity (deficit):
Common stock	$ 0	$ 0

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Accounts receivable, allowance for doubtful accounts	$ 0	$ 0
Common Class A [Member]
Common stock, par value	$ .0001	$ 0.0001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	13,957,339	12,935,546
Common stock, shares outstanding	13,957,339	12,935,546
Common Class B [Member]
Common stock, par value	$ .0001	$ 0.0001
Common stock, shares authorized	7,303,533	7,303,533
Common stock, shares issued	1,920,173	2,409,738
Common stock, shares outstanding	1,920,173	2,409,738

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Statement [Abstract]
Revenue	$ 20,873	$ 8,763	$ 30,616	$ 14,423
Cost of revenue	12,149	5,312	16,770	8,570
Gross profit	8,724	3,451	13,846	5,853
Operating expenses:
Sales and marketing	2,682	1,420	4,537	2,583
Research and development	2,419	939	3,960	1,867
General and administrative	1,292	1,294	4,922	3,158
Total operating expenses, net	6,393	3,653	13,419	7,608
Income (loss) from operations	2,331	(202)	427	(1,755)
Interest income	14	3	17	5
Interest expense	(149)	(86)	(252)	(164)
Other income (expense), net	1,066	(228)	311	(292)
Equity income in net income of affiliates	117	0	118	0
Income (loss) before income taxes	3,379	(513)	621	(2,206)
Income tax benefit (expense) (note 15)	(164)	32	(186)	(749)
Net income (loss)	3,215	(481)	435	(2,955)
Less: net income (loss) attributable to non-controlling interests	0	177	0	(208)
Net income (loss) attributable to ACM Research, Inc.	3,215	(658)	435	(2,747)
Comprehensive income (loss)
Net income (loss)	3,215	(481)	435	(2,955)
Foreign currency translation adjustment	(1,036)	220	(331)	264
Comprehensive income (loss)	2,179	(261)	104	(2,691)
Less: Comprehensive income (loss) attributable to non-controlling interests	0	259	0	(110)
Total comprehensive income (loss) attributable to ACM Research, Inc. (note 2)	$ 2,179	$ (520)	$ 104	$ (2,581)
Net income (loss) attributable to ACM Research, Inc. per common share (note 2):
Basic	$ .20	$ (0.13)	$ 0.03	$ (0.56)
Diluted	$ 0.18	$ (0.13)	$ 0.02	$ (0.56)
Weighted average common shares outstanding used in computing per share amounts (note 2):
Basic	15,838,540	5,086,989	15,611,863	4,927,973
Diluted	18,119,733	5,086,989	17,669,650	4,927,973

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income (loss)	$ 435	$ (2,955)
Adjustments to reconcile net income (loss) from operations to net cash (used in) provided by operating activities:
Depreciation and amortization	173	118
Equity income in net income of affiliates	(118)	0
Deferred income taxes	0	747
Stock-based compensation	2,360	1,348
Net changes in operating assets and liabilities:
Accounts receivable	(6,858)	4,095
Other receivables	1,124	(413)
Inventory	(12,328)	(2,189)
Prepaid expenses	(1,785)	(631)
Other current assets	46	(762)
Accounts payable	10,486	2,921
Advances from customers	1,799	(236)
Income tax payable	187	0
Other payables and accrued expenses	632	704
Other long-term liabilities	(271)	236
Net cash (used in) provided by operating activities	(4,118)	2,983
Cash flows from investing activities:
Purchase of property and equipment	(882)	(26)
Purchase of intangible assets	(157)	(36)
Net cash used in investing activities	(1,039)	(62)
Cash flows from financing activities:
Proceeds from short-term borrowings	10,153	4,584
Repayments of short-term borrowings	(5,252)	(4,861)
Proceeds from stock option exercise to common stock	295	378
Net cash provided by financing activities	5,196	101
Effect of exchange rate changes on cash and cash equivalents	(285)	65
Net (decrease) increase in cash and cash equivalents	(246)	3,087
Cash and cash equivalents at beginning of period	17,681	10,119
Cash and cash equivalents at end of period	17,435	13,206
Supplemental disclosure of cash flow information:
Interest paid	$ 252	$ 164

Description of Business

Description of Business	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Description of Business	ACM Research, Inc. (“ACM”) and its subsidiaries (collectively with ACM, the “Company”) develop, manufacture and sell single-wafer wet cleaning equipment used to improve the manufacturing process and yield for advanced integrated chips. The Company markets and sells, under the brand name “Ultra C,” lines of equipment based on the Company’s proprietary Space Alternated Phase Shift (“SAPS”) and Timely Energized Bubble Oscillation (“TEBO”) technologies. These tools are designed to remove random defects from a wafer surface efficiently, without damaging the wafer or its features, even at increasingly advanced process nodes. ACM was incorporated in California in 1998, and it initially focused on developing tools for manufacturing process steps involving the integration of ultra low-K materials and copper. The Company’s early efforts focused on stress-free copper-polishing technology, and it sold tools based on that technology in the early 2000s. In 2006 the Company established its operational center in Shanghai in the People’s Republic of China (the “PRC”), where it operates through ACM’s subsidiary ACM Research (Shanghai), Inc. (“ACM Shanghai”). ACM Shanghai was formed to help establish and build relationships with integrated circuit manufacturers in the PRC, and the Company initially financed its Shanghai operations in part through sales of non-controlling equity interests in ACM Shanghai. In 2007 the Company began to focus its development efforts on single-wafer wet-cleaning solutions for the front-end chip fabrication process. The Company introduced its SAPS megasonic technology, which can be applied in wet wafer cleaning at numerous steps during the chip fabrication process, in 2009. It introduced its TEBO technology, which can be applied at numerous steps during the fabrication of small node two-dimensional conventional and three-dimensional patterned wafers, in March 2016. The Company has designed its equipment models for SAPS and TEBO solutions using a modular configuration that enables it to create a wet-cleaning tool meeting the specific requirements of a customer, while using pre-existing designs for chamber, electrical, chemical delivery and other modules. The Company also offers a range of custom-made equipment, including cleaners, coaters and developers, to back-end wafer assembly and packaging factories, principally in the PRC. In 2011 ACM Shanghai formed a wholly owned subsidiary in the PRC, ACM Research (Wuxi), Inc. (“ACM Wuxi”), to manage sales and service operations. In November 2016 ACM redomesticated from California to Delaware pursuant to a merger in which ACM Research, Inc., a California corporation, was merged into a newly formed, wholly owned Delaware subsidiary, also named ACM Research, Inc. In June 2017 ACM formed a wholly owned subsidiary in Hong Kong, CleanChip Technologies Limited (“CleanChip”), to act on the Company’s behalf in Asian markets outside the PRC by, for example, serving as a trading partner between ACM Shanghai and its customers, procuring raw materials and components, performing sales and marketing activities, and making strategic investments. In August 2017 ACM purchased 18.77% of ACM Shanghai’s equity interests held by Shanghai Science and Technology Venture Capital Co., Ltd. On November 8, 2017, ACM purchased the remaining 18.36% of ACM Shanghai’s equity interest held by Shanghai Pudong High-Tech Investment Co., Ltd. (“PDHTI”) and Shanghai Zhangjiang Science & Technology Venture Capital Co., Ltd. (“ZSTVC”). At December 31, 2017, ACM owned all of the outstanding equity interests of ACM Shanghai, and indirectly through ACM Shanghai, owned all of the outstanding equity interests of ACM Wuxi. On September 13, 2017, ACM effectuated a 1-for-3 reverse stock split of Class A and Class B common stock. Unless otherwise indicated, all share numbers, per share amount, share prices, exercise prices and conversion rates set forth in these notes and the accompanying condensed consolidated financial statements have been adjusted retrospectively to reflect the reverse stock split. On November 2, 2017, the Registration Statement on Form S-1 (File No. 333- 220451) for ACM’s initial public offering of Class A common stock (the “IPO”) was declared effective by the U.S. Securities and Exchange Commission. Shares of Class A common stock began trading on the Nasdaq Global Market on November 3, 2017, and the closing for the IPO was held on November 7, 2017. In December 2017 ACM formed a wholly owned subsidiary in the Republic of Korea, ACM Research Korea CO., LTD. (“ACM Korea”), to serve customers based in Republic of Korea and perform sales, marketing, research and development activities for new products and solutions.

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Basis of Presentation and Principles of Consolidation The consolidated accounts include ACM and its subsidiaries, ACM Shanghai, ACM Wuxi, CleanChip and ACM Korea. Subsidiaries are those entities in which ACM, directly and indirectly, controls more than one half of the voting power. All significant intercompany transactions and balances have been eliminated upon consolidation. The accompanying condensed consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and the rules and regulations of the Securities and Exchange Commission (“SEC”) for reporting on Form 10-Q. Accordingly, they do not include all the information and footnotes required by GAAP for complete financial statements herein. The unaudited condensed consolidated financial statements herein should be read in conjunction with the historical consolidated financial statements of the Company for the year ended December 31, 2017 included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017. The accompanying condensed consolidated balance sheet as of June 30, 2018, the condensed consolidated statements of operations and comprehensive income (loss) for the three and six months ended June 30, 2018 and 2017, and the condensed consolidated statements of cash flows for the six months ended June 30, 2018 and 2017 are unaudited. In the opinion of management, the unaudited condensed consolidated financial statements of the Company reflect all adjustments that are necessary for a fair presentation of the Company’s financial position and results of operations. Such adjustments are of a normal recurring nature, unless otherwise noted. The balance sheet as of June 30, 2018 and the results of operations for the three months and six months ended June 30, 2018 are not necessarily indicative of the results to be expected for any future period. Use of Estimates The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the balance sheet date and the reported revenues and expenses during the reported period in the condensed consolidated financial statements and accompanying notes. The Company’s significant accounting estimates and assumptions include, but are not limited to, those used for the valuation and recognition of stock-based compensation arrangements and warrant liability, realization of deferred tax assets, assessment for impairment of long-lived assets, allowance for doubtful accounts, inventory valuation for excess and obsolete inventories, lower of cost and market value or net realizable value of inventories, depreciable lives of property and equipment, and useful life of intangible assets. Management of the Company believes that the estimates, judgments and assumptions are reasonable, based on information available at the time they are made. Actual results could differ materially from those estimates. Basic and Diluted Net Income (Loss) attributable to ACM per Common Share Basic and diluted net income (loss) attributable to ACM per common share is calculated as follows: Three Months Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 Numerator: Net income (loss) $ 3,215 $ (481 ) $ 435 $ (2,955 ) Net income (loss) attributable to non-controlling interest - 177 - (208 ) Net income (loss) attributable to ACM, basic and diluted $ 3,215 $ (658 ) $ 435 $ (2,747 ) Denominator: Weighted average shares outstanding, basic 15,838,540 5,086,989 15,611,863 4,927,973 Effect of dilutive securities 2,281,193 - 2,057,787 - Weighted average shares outstanding, diluted 18,119,733 5,086,989 17,669,650 4,927,973 Net income (loss) attributable to ACM per common share: Basic $ 0.20 $ (0.13 ) $ 0.03 $ (0.56 ) Diluted $ 0.18 $ (0.13 ) $ 0.02 $ (0.56 ) ACM has been authorized to issue Class A and Class B common stock since redomesticating in Delaware in November 2016. The two classes of common stock are substantially identical in all material respects, except for voting rights. Since ACM did not declare any dividends during the three and six months ended June 30, 2018 and 2017, the net income (loss) per common share attributable to each class is the same under the “two-class” method. As such, the two classes of common stock have been presented on a combined basis in the consolidated statements of operations and comprehensive income (loss) and in the above computation of net income (loss) per common share. Diluted net income (loss) per common share reflects the potential dilution from securities that could share in ACM’s earnings. ACM’s potential dilutive securities consist of convertible preferred stocks, warrants and stock options for the three and six months ended June 30, 2018 and 2017. Certain potential dilutive securities were excluded from the net income (loss) per share calculation because the impact would be anti-dilutive. Recent Accounting Pronouncements Recently Adopted Accounting Pronouncements In May 2017, the Financial Accounting Standards Board Compensation—Stock Compensation (Topic 718): Scope of Modification Accounting In February 2017, the FASB issued ASU No. 2017-05, Other Income—Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20): Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments In January 2016, the FASB issued ASU No. 2016-01, “Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities” In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) On January 1, 2018, the Company adopted ASC Topic 606, Revenue from Contracts with Customers, The Company derives revenue principally from the sale of single-wafer wet cleaning equipment. Revenue from contracts with customers is recognized using the following five steps pursuant to the New Revenue Standard: 1. Identify the contract(s) with a customer; 2. Identify the performance obligations in the contract; 3. Determine the transaction price; 4. Allocate the transaction price to the performance obligations in the contract; and 5. Recognize revenue when (or as) the entity satisfies a performance obligation. A contract contains a promise (or promises) to transfer goods or services to a customer. A performance obligation is a promise (or a group of promises) that is distinct. The transaction price is the amount of consideration a company expects to be entitled from a customer in exchange for providing the goods or services. The unit of account for revenue recognition is a performance obligation (a good or service). A contract may contain one or more performance obligations. Performance obligations are accounted for separately if they are distinct. A good or service is distinct if the customer can benefit from the good or service either on its own or together with other resources that are readily available to the customer, and the good or service is distinct in the context of the contract. Otherwise performance obligations are combined with other promised goods or services until the Company identifies a bundle of goods or services that is distinct. Promises in contracts which do not result in the transfer of a good or service are not performance obligations, as well as those promises that are administrative in nature, or are immaterial in the context of the contract. The Company has addressed whether various goods and services promised to the customer represent distinct performance obligations. The Company applied the guidance of ASC Topic 606-10-25-16 through 18 in order to verify which promises should be assessed for classification as distinct performance obligations. The Company’s contracts with customers include more than one performance obligation. For example, the delivery of a piece of equipment generally includes the promise to install the equipment in the customer’s facility. The Company’s performance obligations in connection with a sale of equipment generally include production, delivery and installation, together with the provision of a warranty. The transaction price is allocated to all the separate performance obligations in an arrangement. It reflects the amount of consideration to which the Company expects to be entitled in exchange for transferring goods or services, which may include an estimate of variable consideration to the extent that it is probable of not being subject to significant reversals in the future based on the Company’s experience with similar arrangements. The transaction price excludes amounts collected on behalf of third parties, such as sales taxes. This is done on a relative selling price basis using standalone selling prices (“SSP”). The SSP represents the price at which the Company would sell that good or service on a standalone basis at the inception of the contract. Given the requirement for establishing SSP for all performance obligations, if the SSP is directly observable through standalone sales, then such sales should be considered in the establishment of the SSP for the performance obligation. All of the Company’s products were sold in stand-alone arrangements, the Company does not have observable SSPs for most performance obligations as they are not regularly sold on a standalone basis. Production, delivery and installation of a product, together with provision of a warranty, are a single unit of accounting. Revenue is recognized when the Company satisfies each performance obligation by transferring control of the promised goods or services to the customer. Goods or services can transfer at a point in time (upon the acceptance of the products or upon the arrival at the destination as stipulated in the shipment terms) in a sale arrangement. In general, the Company recognizes revenue when a tool has been demonstrated to meet the customer’s predetermined specifications and is accepted by the customer. If terms of the sale provide for a lapsing customer acceptance period, the Company recognizes revenue as of the earlier of the expiration of the lapsing acceptance period and customer acceptance. In the following circumstances, however, the Company recognizes revenue upon shipment or delivery, when legal title to the tool is passed to a customer as follows: ● When the customer has previously accepted the same tool with the same specifications and the Company can objectively demonstrate that the tool meets all of the required acceptance criteria; ● When the sales contract or purchase order contains no acceptance agreement or lapsing acceptance provision and the Company can objectively demonstrate that the tool meets all of the required acceptance criteria; ● When the customer withholds acceptance due to issues unrelated to product performance, in which case revenue is recognized when the system is performing as intended and meets predetermined specifications; or ● When the Company’s sales arrangements do not include a general right of return. The Company offers post-warranty period services, which consist principally of the installation and replacement of parts and small-scale modifications to the equipment. The related revenue and costs of revenue are recognized when parts have been delivered and installed, risk of loss has passed to the customer, and collection is probable. The Company does not expect revenue from extended maintenance service contracts to represent a material portion of its revenue in the future. As such, the Company has concluded that its revenue recognition under the adoption of the New Revenue Standard will remain the same as previously reported and will not have material impacts to its condensed consolidated financial statements. The Company incurs costs related to the acquisition of its contracts with customers in the form of sales commissions. Sales commissions are paid to third party representatives and distributors. Contractual agreements with these parties outline commission structures and rates to be paid. Generally speaking, the contracts are all individual procurement decisions by the customers and are not for significant periods of time, nor do they include renewal provisions. As such, all contracts have an economic life of significantly less than a year. Accordingly, the Company expenses sales commissions when incurred in accordance with the practical expedient in the New Revenue Standard when the underlying contract asset is less than one year. These costs are recorded within sales and marketing expenses. Generally, all contracts have expected durations of one year or less. Accordingly, the Company applies the practical expedient allowed in the New Revenue Standard and does not disclose information about remaining performance obligations that have original expected durations of one year or less. The Company does not incur any costs to fulfill the contracts with customers that are not already reported in compliance with another applicable standard (for example, inventory or plant, property and equipment). Recent Accounting Pronouncements Not Yet Adopted In June 2018, the FASB issued ASU 2018-07, Compensation — Stock Compensation (Topic 718) — Improvements to Nonemployee Share-Based Payment Accounting In February 2018, the FASB issued ASU No. 2018-02, Income Statement—Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income In July 2017, the FASB issued ASU No. 2017-11, Earnings Per Share (Topic 260); Distinguishing Liabilities from Equity (Topic 480); Derivatives and Hedging (Topic 815): (Part I) Accounting for Certain Financial Instruments with Down Round Features, (Part II) Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Noncontrolling Interests with a Scope Exception In January 2017, the FASB issued ASU No. 2017-04, Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) Leases Leases

Accounts Receivable

Accounts Receivable	6 Months Ended
	Jun. 30, 2018
Receivables [Abstract]
Accounts Receivable	At June 30, 2018 and December 31, 2017, accounts receivable consisted of the following: June 30, December 31, 2018 2017 Accounts receivable $ 33,289 $ 26,762 Less: Allowance for doubtful accounts - - Total $ 33,289 $ 26,762 The Company reviews accounts receivable on a periodic basis and makes general and specific allowances when there is doubt as to the collectability of individual balances. No allowance for doubtful accounts was considered necessary at June 30, 2018 or December 31, 2017. At June 30, 2018 and December 31, 2017, accounts receivable of $2,266 and $1,805, respectively, were pledged as collateral for borrowings from financial institutions.

Inventories

Inventories	6 Months Ended
	Jun. 30, 2018
Inventory Disclosure [Abstract]
Inventories	At June 30, 2018 and December 31, 2017, inventory consisted of the following: June 30, 2018 December 31, 2017 Raw materials $ 14,827 $ 6,181 Work in process 7,235 4,328 Finished goods 5,469 4,879 Total inventory, gross 27,531 15,388 Inventory reserve - - Total inventory, net $ 27,531 $ 15,388 At June 30, 2018 and December 31, 2017, the Company did not have an inventory reserve and no inventory was pledged as collateral for borrowings from financial institutions.

Property, Plant and Equipment,

Property, Plant and Equipment, Net	6 Months Ended
	Jun. 30, 2018
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment, Net	At June 30, 2018 and December 31, 2017, property, plant and equipment consisted of the following: June 30, 2018 December 31, 2017 Manufacturing equipment $ 9,573 $ 9,660 Office equipment 525 463 Transportation equipment 201 203 Leasehold improvement 245 277 Total cost 10,544 10,603 Less: Total accumulated depreciation (8,282 ) (8,263 ) Construction in progress 788 - Total property, plant and equipment, net $ 3,050 $ 2,340 Depreciation expense was $88 and $66 for the three months ended June 30, 2018 and 2017, respectively, and $173 and $118 for the six months ended June 30, 2018 and 2017, respectively.

Short-Term Borrowings

Short-Term Borrowings	6 Months Ended
	Jun. 30, 2018
Debt Disclosure [Abstract]
Short-Term Borrowings	At June 30, 2018 and December 31, 2017, short-term borrowings consisted of the following: June 30, 2018 December 31, 2017 Line of credit up to $30 million RMB from Bank of China Pudong Branch, due on March 5, 2018 with annual interest rate of 5.69%, secured by certain of the Company’s intellectual property and fully repaid on March 5, 2018 $ - $ 2,219 Line of credit up to $30 million RMB from Bank of China Pudong Branch, due on September 11, 2018 with annual interest rate of 5.69%, secured by certain of the Company’s intellectual property and guaranteed by the Company’s Chief Executive Officer and President (“CEO”) 1,511 - Line of credit up to $30 million RMB from Bank of China Pudong Branch, due on September 24, 2018 with annual interest rate of 5.69%, secured by certain of the Company’s intellectual property and guaranteed by the CEO 1,511 - Line of credit up to $25 million RMB from Bank of Shanghai Pudong Branch, due on various dates of October, 2018 with an annual interest rate of 5.66%, guaranteed by the CEO and fully repaid on May 8, 2018 - 2,111 Line of credit up to $50 million RMB from Bank of Shanghai Pudong Branch, due on April 17, 2019 with an annual interest rate of 4.99%, guaranteed by the CEO 3,133 - Line of credit up to $5 million RMB from Shanghai Rural Commercial Bank, due on November 21, 2018 with an annual interest rate of 5.44%, guaranteed by the CEO and pledged by accounts receivable 755 765 Line of credit up to $10 million RMB from Shanghai Rural Commercial Bank, due on January 23,2019 with an annual interest rate of 5.44%, guaranteed by the CEO and pledged by accounts receivable 1,511 - Line of credit up to $10 million RMB from Bank of Communications, due on December 28 2018 with an annual interest rate of 5.66% 1,511 - Total $ 9,932 $ 5,095 Interest expense related to short-term borrowings amounted to $149 and $86 for the three months ended June 30, 2018 and 2017, respectively, and $252 and $164, for the six months ended June 30, 2018 and 2017, respectively.

Other Payable and Accrued Expen

Other Payable and Accrued Expenses	6 Months Ended
	Jun. 30, 2018
Payables and Accruals [Abstract]
Other Payable and Accrued Expenses	At June 30, 2018 and December 31, 2017, other payable and accrued expenses consisted of the following: June 30, 2018 December 31, 2017 Lease expenses and payable for leasehold improvement due to a related party (note 11) $ 162 $ 2,024 Accrued commissions 1,574 836 Accrued warranty 1,256 839 Accrued payroll 432 745 Accrued professional fees 253 60 Accrued machine testing fees 1,295 684 Others 1,546 849 Total $ 6,518 $ 6,037

Warrant Liability

Warrant Liability	6 Months Ended
	Jun. 30, 2018
Text Block [Abstract]
Warrant Liability	On December 9, 2016, Shengxin (Shanghai) Management Consulting Limited Partnership (“SMC”), a related party (note 11), delivered RMB 20,124 (approximately $2,981 as of the close of business on such date) in cash (the “SMC Investment”) to ACM Shanghai for potential investment pursuant to terms to be subsequently negotiated On March 14, 2017, ACM, ACM Shanghai and SMC entered into a securities purchase agreement (the “SMC Agreement”) pursuant to which, in exchange for the SMC Investment, ACM issued to SMC a warrant exercisable, for cash or on a cashless basis, to purchase, at any time on or before May 17, 2023, all, but not less than all, of 397,502 shares of Class A common stock at a price of $7.50 per share. The warrant issued to SMC, while outstanding as of December 31, 2017, was classified as a liability as it was conditionally puttable in accordance with FASB ASC 480, Distinguishing Liabilities from Equity On March 30, 2018, ACM entered into a warrant exercise agreement with ACM Shanghai and SMC pursuant to which SMC exercised its warrant in full by issuing to ACM a senior secured promissory note in the principal amount of approximately $3,000. ACM then transferred the SMC note to ACM Shanghai in exchange for an intercompany promissory note of ACM Shanghai in the principal amount of approximately $3,000. Each of the two notes bears interest at a rate of 3.01% per annum and matures on August 17, 2023. As security for its performance of its obligations under its note, SMC granted to ACM Shanghai a security interest in the 397,502 shares of Class A common stock issued to SMC upon its exercise of the warrant. Upon the issuance of 397,502 shares of Class A common stock to SMC, the senior secured promissory note issued to AMC by SMC was offset by the SMC investment.

Other Long-Term Liabilities

Other Long-Term Liabilities	6 Months Ended
	Jun. 30, 2018
Other Liabilities Disclosure [Abstract]
Other Long-Term Liabilities	Other long-term liabilities represent government subsidies received from PRC governmental authorities for development and commercialization of certain technology but not yet recognized. As of June 30, 2018, and December 31, 2017, other long-term liabilities consisted of the following unearned government subsidies: June 30, 2018 December 31, 2017 Subsidies to Stress Free Polishing project, commenced in 2008 and 2017 $ 1,720 $ 1,952 Subsidies to Electro Copper Plating project, commenced in 2014 3,943 4,265 Subsidies to Polytetrafluoroethylene, commenced in 2018 206 - Total $ 5,869 $ 6,217

Equity Method Investment

Equity Method Investment	6 Months Ended
	Jun. 30, 2018
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investment	On September 6, 2017, ACM and Ninebell Co., Ltd. (“Ninebell”), a Korean company that is one of the Company’s principal materials suppliers, entered into an ordinary share purchase agreement, effective as of September 11, 2017, pursuant to which Ninebell issued to ACM ordinary shares representing 20% of Ninebell’s post-closing equity for a purchase price of $1,200, and a common stock purchase agreement, effective as of September 11, 2017, pursuant to which ACM issued 133,334 shares of Class A common stock to Ninebell for a purchase price of $1,000 at $7.50 per share. The investment in Ninebell is accounted for under the equity method.

Related Party Balances and Tran

Related Party Balances and Transactions	6 Months Ended
	Jun. 30, 2018
Related Party Transactions [Abstract]
Related Party Balances and Transactions	On August 18, 2017, ACM and Ninebell, its equity method investment affiliate (note 10), entered into a loan agreement pursuant to which ACM made an interest-free loan of $946 to Ninebell, payable in 180 days or automatically extended another 180 days if in default. The loan was secured by a pledge of Ninebell’s accounts receivable due from ACM and all money that Ninebell received from ACM. Ninebell repaid the loan in March 2018. ACM purchased materials from Ninebell amounting to $1,865 and $981 during the three months ended June 30, 2018 and 2017, and $2,835 and $1,821 during the six months ended June 30, 2018 and 2017, respectively. As of June 30, 2018 and December 31, 2017, accounts payable due to Ninebell were $1,498 and $2,123, respectively, and prepaid to Ninebell for material purchases was $824 and $229, respectively. In 2007 ACM Shanghai entered into an operating lease agreement with Shanghai Zhangjiang Group Co., Ltd. (“Zhangjiang Group”) to lease manufacturing and office space located in Shanghai, China. An affiliate of Zhangjiang Group holds 787,098 shares of Class A common stock that it acquired in September 2017 for $5,903. Pursuant to the lease agreement, Zhangjiang Group provided $771 to ACM Shanghai for leasehold improvements. In September 2016 the lease agreement was amended to modify payment terms and extend the lease through December 31, 2017. From January 1 to April 25, 2018, ACM Shanghai leased the property on a month-to-month basis. On April 26, 2018, ACM Shanghai entered into a renewed lease with Zhangjiang Group for the period from January 1, 2018 through December 31, 2022. Under the lease, ACM Shanghai will pay a monthly rental fee of approximately RMB 366 (equivalent to $55). The required security deposit is RMB 1,077 (equivalent to $163). The Company incurred leasing expenses under the lease agreement of $147 and $137 during the three months ended June 30, 2018 and 2017, respectively, and $319 and $296 during the six months ended June 30, 2018 and 2017, respectively. As of June 30, 2018 and December 31, 2017, payables to Zhangjiang Group for lease expenses and leasehold improvements recorded as other payables and accrued expenses amounted to $162 and $2,024, respectively (note 7). On December 9, 2016, ACM Shanghai received the SMC Investment from SMC for potential investment pursuant to terms to be subsequently negotiated (note 8). SMC is a limited partnership incorporated in the PRC, whose partners consist of employees of ACM Shanghai. On March 14, 2017, ACM, ACM Shanghai and SMC entered into a securities purchase agreement (the “SMC Agreement”) pursuant to which, in exchange for the SMC Investment, ACM issued to SMC a warrant exercisable, for cash or on a cashless basis, to purchase, at any time on or before May 17, 2023, all, but not less than all, of 397,502 shares of Class A common stock at a price of $7.50 per share, for a total exercise price of $2,981. On March 30, 2018, SMC exercised the warrant and purchased 397,502 shares of Class A common stock (note 8).

Leases

Leases	6 Months Ended
	Jun. 30, 2018
Leases [Abstract]
Leases	ACM leases its administrative, research and development and manufacturing facilities under various operating leases. Future minimum lease payments under non-cancelable lease agreements as of June 30, 2018 and December 31, 2017 were as follows: June 30, 2018 December 31, 2017 2018 $ 601 $ 50 2019 1,383 22 2020 1,362 - 2021 1,392 - 2022 1,428 - Total $ 6,166 $ 72 Total lease expense was $563 and $189 for the three months ended June 30, 2018 and 2017, respectively, and $1,058 and $504 for the six months ended June 30, 2018 and 2017, respectively.

Common Stock

Common Stock	6 Months Ended
	Jun. 30, 2018
Equity [Abstract]
Common Stock	ACM is authorized to issue 100,000,000 shares of Class A common stock and 7,303,533 shares of Class B common stock, each with a par value of $0.0001. Each share of Class A common stock is entitled to one vote, and each share of Class B common stock is entitled to twenty votes and is convertible at any time into one share of Class A common stock. Shares of Class A common stock and Class B common stock are treated equally, identically and ratably with respect to any dividends declared by the Board of Directors unless the Board of Directors declares different dividends to the Class A common stock and Class B common stock by getting approval from a majority of common stock holders. In August 2017 ACM entered into a securities purchase agreement with PDHTI and its subsidiary Pudong Science and Technology (Cayman) Co., Ltd. (“PST”), in which ACM agreed to bid, in an auction process mandated by PRC regulations, to purchase PDHTI’s 10.78% equity interest in ACM Shanghai and to sell shares of Class A common stock to PST. On September 8, 2017, ACM issued 1,119,576 shares of Class A common stock to PST for a purchase price of $7.50 per share, representing an aggregate purchase price of $8,397. In August 2017 ACM entered into a securities purchase agreement with ZSTVC and its subsidiary Zhangjiang AJ Company Limited (“ZJAJ”), in which ACM agreed to bid, in an auction process mandated by PRC regulations, to purchase ZSTVC’s 7.58% equity interest in ACM Shanghai and to sell shares of Class A common stock to ZJAJ. On September 8, 2017, ACM issued 787,098 shares of Class A common stock to ZJAJ for a purchase price of $7.50 per share, or an aggregate purchase price of $5,903. In September 2017 ACM issued 133,334 shares of Class A common stock to Ninebell for a purchase price of $7.50 per share, or an aggregate purchase price of $1,000 (note 10). In November 2017 ACM issued 2,233,000 shares of Class A common stock and received net proceeds of $11,664 from the IPO and concurrently ACM issued an additional 1,333,334 shares of Class A common stock in a private placement for net proceeds of $7,053. Upon the completion of the IPO on November 2, 2017, the Company issued a five-year warrant (the “Underwriter's Warrant”) to Roth Capital Partners, LLC, the lead underwriter of the IPO, for the purchase of up to 80,000 shares of Class A common stock at an exercise price of $6.16 per share. The Underwriter’s Warrant was immediately exercisable and expires on November 1, 2022. The Underwriter's Warrant is equity classified and its fair value was $137 at the IPO closing date, using the Black Scholes model with the following assumptions: volatility of 28.26%, a dividend rate of 0%, and a risk-free discount rate of 2%. In September 2017 ACM issued 133,334 shares of Class A common stock to Ninebell for a purchase price of $7.50 per share, or an aggregate purchase price of $1,000 (note 10). At various dates during 2017, ACM issued 472,889 shares of Class A common stock upon options exercises by certain employee and non-employees. During the three months and six months ended June 30, 2018, the Company issued 77,504 and 134,726 shares of Class A common stock, respectively, upon options exercises by certain employees and non employees. On March 30, 2018, SMC exercised its warrant (note 8) and purchased 397,502 shares of Class A common stock. At June 30, 2018 and December 31, 2017, the number of shares of Class A common stock issued and outstanding was 13,957,339 and 12,935,546, respectively. At June 30, 2018 and December 31, 2017, the number of shares of Class B common stock issued and outstanding was 1,920,173 and 2,409,738, respectively. During the three months and six months ended June 30, 2018, 489,565 and 489,565 shares of Class B common stock, respectively, were converted into Class A common stock.

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jun. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	ACM’s stock-based compensation awards consisting of employee and non-employee awards were issued under the 1998 Stock Option Plan and 2016 Omnibus Incentive Plan and as standalone options. Employee Awards The following table summarizes the Company’s employee share option activities during the six months ended June 30, 2018: Number of Option Shared Weighted Average Grant Date Fair Value Weighted Average Exercise Price Weighted Average Remaining Contractual Term Outstanding at December 31, 2017 2,045,616 $ 0.66 $ 2.46 7.57 years Granted 500,000 2.26 5.31 Exercised (118,059 ) 0.50 2.07 Expired (2,575 ) 0.55 3.00 Forfeited (100,887 ) 0.77 3.18 Outstanding at June 30, 2018 2,324,095 1.01 3.05 7.58 years Vested and exercisable at June 30, 2018 1,168,983 During the three months ended June 30, 2018 and 2017, the Company recognized employee stock-based compensation expense of $170 and $67, respectively. During the six months ended June 30, 2018 and 2017, the Company recognized employee stock-based compensation expense of $263 and $128, respectively As of June 30, 2018 and December 31, 2017, $1,495 and $1,690, respectively, of total unrecognized employee stock-based compensation expense, net of estimated forfeitures, related to stock-based awards were expected to be recognized over a weighted-average period of 1.84 years and 1.77 years, respectively. Total recognized compensation cost may be adjusted for future changes in estimated forfeitures. The fair value of each option granted to an employee during the six months ended June 30, 2018 was estimated on the grant date using the Black-Scholes valuation model with the following assumptions. No options were granted to employees during the three months ended June 30, 2018. January 25, 2018 Fair value of common share(1) $ 5.31 Expected term in years(2) 6.25 Volatility(3) 39.14 % Risk free interest rate(4) 2.55 % Expected dividend(5) 0.00 % (1) Exercise price is market close price of Class A common stock at grant date of January 25, 2018. (2) Expected term of share options is based on the average of the vesting period and the contractual term for each grant, in accordance with Staff Accounting Bulletin 110. (3) Volatility is calculated based on the historical volatility of comparable companies in the period equal to the expected term of each grant. (4) Risk-free interest rate is based on the yields of U.S. Treasury securities with maturities similar to the expected term of the share options in effect at the time of grant. (5) Expected dividend is assumed to be 0% as ACM has no history or expectation of paying dividends on its common stock. Non-employee Awards The following table summarizes the Company’s non-employee share option activities during the six months ended June 30, 2018: Number of Option Shares Weighted Average Grant Date Fair Value Weighted Average Exercise Price Weighted Average Remaining Contractual Term Outstanding at December 31, 2017 1,326,676 $ 0.78 2.52 7.54 years Granted - - - - Exercised (16,667 ) 0.50 3.00 - Expired - - - - Forfeited - - - - Outstanding at June 30, 2018 1,310,009 $ 0.76 2.51 7.03 years Vested and exercisable at June 30, 2018 900,569 During the three months ended June 30, 2018 and 2017, the Company recognized non-employee stock-based compensation expense of $14 and $446, respectively. During the six months ended June 30, 2018 and 2017, the Company recognized non-employee stock-based compensation expense of $2,097 and $1,220. The fair value of each option granted to a non-employee during the six months ended June 30, 2018 was calculated by application of the Black-Scholes valuation model with the following assumptions. No options were granted to any non-employee during the six months ended June 30, 2018. June 30, 2018 Fair value of common share(1) $ 10.78 Expected term in years(2) 3.08-5.36 Volatility(3) 43.50-45.48 % Risk free interest rate(4) 2.39-2.73 % Expected dividend(5) 0.00 % (1) Exercise price was market close price of Class A common stock at June 30, 2018. (2) Expected term of share options is based on the average of the vesting period and the contractual term for each grant, in accordance with Staff Accounting Bulletin 110. (3) Volatility is calculated based on the historical volatility of comparable companies in the period equal to the expected term of each grant. (4) Risk-free interest rate is based on the yields of U.S. Treasury securities with maturities similar to the expected term of the share options in effect at the time of grant. (5) Expected dividend is assumed to be 0% as ACM has no history or expectation of paying a dividend on its common stock.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carry-forwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period during which such rates are enacted. The Company considers all available evidence to determine whether it is more likely than not that some portion or all of the deferred tax assets will be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become realizable. Management considers the scheduled reversal of deferred tax liabilities (including the impact of available carryback and carry-forward periods), and projected taxable income in assessing the realizability of deferred tax assets. In making such judgments, significant weight is given to evidence that can be objectively verified. Based on all available evidence, in particular the Company’s three-year historical cumulative losses, recent operating results and U.S. pre-tax loss for the six months ended June 30, 2018, the Company recorded a valuation allowance against its U.S. net deferred tax assets. In order to fully realize the U.S. deferred tax assets, the Company will need to generate sufficient taxable income in future periods before the expiration of the deferred tax assets governed by the tax code. In each period since inception, the Company has recorded a valuation allowance for the full amount of net deferred tax assets in the United States, as the realization of deferred tax assets is uncertain. ACM Shanghai has shown a three-year historical cumulative profit and has projections of future income. As a result, the Company maintained a partial consolidated valuation allowance for the three and six months ended June 30, 2018 and December 31, 2017. The Company accounts for uncertain tax positions in accordance with the authoritative guidance on income taxes under which the Company may only recognize or continue to recognize tax positions that meet a "more likely than not" threshold. The Company recognizes accrued interest and penalties related to unrecognized tax benefits as a component of the provision for income taxes. The Company’s effective tax rate differs from statutory rates of 21% for U.S. federal income tax purposes and 15% to 25% for Chinese income tax purposes due to the effects of the valuation allowance and certain permanent differences from book-tax differences. As a result, the Company recorded income tax expense of $164 and income tax benefit of $32 during the three months ended June 30, 2018 and 2017, respectively. For the six months ended June 30, 2018 and 2017, the Company recorded income tax expense of $186 and $749, respectively. As of June 30, 2018, the Company's total unrecognized tax benefits were approximately $44, which would not affect the effective tax rate if recognized. The Company will recognize interest and penalties, when they occur, related to uncertain tax provisions as a component of tax expense. No interest or penalties were recognized for the three and six months ended June 30, 2018. The Company files income tax returns in the United States, and state and foreign jurisdictions. The federal, state and foreign income tax returns are under the statute of limitations subject to tax examinations for the tax years ended December 31, 2009 through December 31, 2017. To the extent the Company has tax attribute carry-forwards, the tax years in which the attribute was generated may still be adjusted upon examination by the U.S. Internal Revenue Service, state or foreign tax authorities to the extent utilized in a future period. The Tax Cuts and Jobs Act (the “Tax Act”) enacted on December 22, 2017 introduced significant changes to U.S. income tax law. Effective January 1, 2018, the Tax Act reduced the U.S. statutory tax rate from 35% to 21% and created new taxes on certain foreign-sourced earnings and certain intercompany payments. Due to the timing of the enactment and the complexity involved in applying the provisions of the Tax Act, the Company made reasonable estimates of the effects and recorded provisional amounts in its financial statements as of December 31, 2017. As the Company collects and prepares necessary data, and interprets the Tax Act and any additional guidance issued by the U.S. Treasury Department, the U.S. Internal Revenue Service and other standard-setting bodies, the Company may make adjustments to the provisional amounts. Those adjustments may materially affect the Company’s provision for income taxes and effective tax rate in the period in which the adjustments are made. There were no adjustments made in the three and six months ended June 30, 2018. The accounting for the tax effects of the Tax Act will be completed later in 2018.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	The Company leases offices under non-cancelable operating lease agreements. See note 12 for future minimum lease payments under non-cancelable operating lease agreements with initial terms of one year or more. As of June 30, 2018, the Company was part to several contracts for construction of equipment and facilities. Total outstanding commitments under these contracts were $759 and $0 at June 30, 2018 and December 31, 2017, respectively. The Company expects to pay off all the balances within a year. From time to time the Company is subject to legal proceedings, including claims in the ordinary course of business and claims with respect to patent infringements. As of June 30, 2018 the Company did not have any legal proceedings.

Summary of Significant Accoun22

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Basis of Presentation and Principles of Consolidation	The consolidated accounts include ACM and its subsidiaries, ACM Shanghai, ACM Wuxi, CleanChip and ACM Korea. Subsidiaries are those entities in which ACM, directly and indirectly, controls more than one half of the voting power. All significant intercompany transactions and balances have been eliminated upon consolidation. The accompanying condensed consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and the rules and regulations of the Securities and Exchange Commission (“SEC”) for reporting on Form 10-Q. Accordingly, they do not include all the information and footnotes required by GAAP for complete financial statements herein. The unaudited condensed consolidated financial statements herein should be read in conjunction with the historical consolidated financial statements of the Company for the year ended December 31, 2017 included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017. The accompanying condensed consolidated balance sheet as of June 30, 2018, the condensed consolidated statements of operations and comprehensive income (loss) for the three and six months ended June 30, 2018 and 2017, and the condensed consolidated statements of cash flows for the six months ended June 30, 2018 and 2017 are unaudited. In the opinion of management, the unaudited condensed consolidated financial statements of the Company reflect all adjustments that are necessary for a fair presentation of the Company’s financial position and results of operations. Such adjustments are of a normal recurring nature, unless otherwise noted. The balance sheet as of June 30, 2018 and the results of operations for the three months and six months ended June 30, 2018 are not necessarily indicative of the results to be expected for any future period.
Use of Estimates	The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the balance sheet date and the reported revenues and expenses during the reported period in the condensed consolidated financial statements and accompanying notes. The Company’s significant accounting estimates and assumptions include, but are not limited to, those used for the valuation and recognition of stock-based compensation arrangements and warrant liability, realization of deferred tax assets, assessment for impairment of long-lived assets, allowance for doubtful accounts, inventory valuation for excess and obsolete inventories, lower of cost and market value or net realizable value of inventories, depreciable lives of property and equipment, and useful life of intangible assets. Management of the Company believes that the estimates, judgments and assumptions are reasonable, based on information available at the time they are made. Actual results could differ materially from those estimates.
Basic and Diluted Net Income (Loss) attributable to ACM per Common Share	Basic and diluted net income (loss) attributable to ACM per common share is calculated as follows: Three Months Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 Numerator: Net income (loss) $ 3,215 $ (481 ) $ 435 $ (2,955 ) Net income (loss) attributable to non-controlling interest - 177 - (208 ) Net income (loss) attributable to ACM, basic and diluted $ 3,215 $ (658 ) $ 435 $ (2,747 ) Denominator: Weighted average shares outstanding, basic 15,838,540 5,086,989 15,611,863 4,927,973 Effect of dilutive securities 2,281,193 - 2,057,787 - Weighted average shares outstanding, diluted 18,119,733 5,086,989 17,669,650 4,927,973 Net income (loss) attributable to ACM per common share: Basic $ 0.20 $ (0.13 ) $ 0.03 $ (0.56 ) Diluted $ 0.18 $ (0.13 ) $ 0.02 $ (0.56 ) ACM has been authorized to issue Class A and Class B common stock since redomesticating in Delaware in November 2016. The two classes of common stock are substantially identical in all material respects, except for voting rights. Since ACM did not declare any dividends during the three and six months ended June 30, 2018 and 2017, the net income (loss) per common share attributable to each class is the same under the “two-class” method. As such, the two classes of common stock have been presented on a combined basis in the consolidated statements of operations and comprehensive income (loss) and in the above computation of net income (loss) per common share. Diluted net income (loss) per common share reflects the potential dilution from securities that could share in ACM’s earnings. ACM’s potential dilutive securities consist of convertible preferred stocks, warrants and stock options for the three and six months ended June 30, 2018 and 2017. Certain potential dilutive securities were excluded from the net income (loss) per share calculation because the impact would be anti-dilutive.
Recent Accounting Pronouncements	Recently Adopted Accounting Pronouncements In May 2017, the Financial Accounting Standards Board Compensation—Stock Compensation (Topic 718): Scope of Modification Accounting In February 2017, the FASB issued ASU No. 2017-05, Other Income—Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20): Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments In January 2016, the FASB issued ASU No. 2016-01, “Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities” In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) On January 1, 2018, the Company adopted ASC Topic 606, Revenue from Contracts with Customers, The Company derives revenue principally from the sale of single-wafer wet cleaning equipment. Revenue from contracts with customers is recognized using the following five steps pursuant to the New Revenue Standard: 1. Identify the contract(s) with a customer; 2. Identify the performance obligations in the contract; 3. Determine the transaction price; 4. Allocate the transaction price to the performance obligations in the contract; and 5. Recognize revenue when (or as) the entity satisfies a performance obligation. A contract contains a promise (or promises) to transfer goods or services to a customer. A performance obligation is a promise (or a group of promises) that is distinct. The transaction price is the amount of consideration a company expects to be entitled from a customer in exchange for providing the goods or services. The unit of account for revenue recognition is a performance obligation (a good or service). A contract may contain one or more performance obligations. Performance obligations are accounted for separately if they are distinct. A good or service is distinct if the customer can benefit from the good or service either on its own or together with other resources that are readily available to the customer, and the good or service is distinct in the context of the contract. Otherwise performance obligations are combined with other promised goods or services until the Company identifies a bundle of goods or services that is distinct. Promises in contracts which do not result in the transfer of a good or service are not performance obligations, as well as those promises that are administrative in nature, or are immaterial in the context of the contract. The Company has addressed whether various goods and services promised to the customer represent distinct performance obligations. The Company applied the guidance of ASC Topic 606-10-25-16 through 18 in order to verify which promises should be assessed for classification as distinct performance obligations. The Company’s contracts with customers include more than one performance obligation. For example, the delivery of a piece of equipment generally includes the promise to install the equipment in the customer’s facility. The Company’s performance obligations in connection with a sale of equipment generally include production, delivery and installation, together with the provision of a warranty. The transaction price is allocated to all the separate performance obligations in an arrangement. It reflects the amount of consideration to which the Company expects to be entitled in exchange for transferring goods or services, which may include an estimate of variable consideration to the extent that it is probable of not being subject to significant reversals in the future based on the Company’s experience with similar arrangements. The transaction price excludes amounts collected on behalf of third parties, such as sales taxes. This is done on a relative selling price basis using standalone selling prices (“SSP”). The SSP represents the price at which the Company would sell that good or service on a standalone basis at the inception of the contract. Given the requirement for establishing SSP for all performance obligations, if the SSP is directly observable through standalone sales, then such sales should be considered in the establishment of the SSP for the performance obligation. All of the Company’s products were sold in stand-alone arrangements, the Company does not have observable SSPs for most performance obligations as they are not regularly sold on a standalone basis. Production, delivery and installation of a product, together with provision of a warranty, are a single unit of accounting. Revenue is recognized when the Company satisfies each performance obligation by transferring control of the promised goods or services to the customer. Goods or services can transfer at a point in time (upon the acceptance of the products or upon the arrival at the destination as stipulated in the shipment terms) in a sale arrangement. In general, the Company recognizes revenue when a tool has been demonstrated to meet the customer’s predetermined specifications and is accepted by the customer. If terms of the sale provide for a lapsing customer acceptance period, the Company recognizes revenue as of the earlier of the expiration of the lapsing acceptance period and customer acceptance. In the following circumstances, however, the Company recognizes revenue upon shipment or delivery, when legal title to the tool is passed to a customer as follows: ● When the customer has previously accepted the same tool with the same specifications and the Company can objectively demonstrate that the tool meets all of the required acceptance criteria; ● When the sales contract or purchase order contains no acceptance agreement or lapsing acceptance provision and the Company can objectively demonstrate that the tool meets all of the required acceptance criteria; ● When the customer withholds acceptance due to issues unrelated to product performance, in which case revenue is recognized when the system is performing as intended and meets predetermined specifications; or ● When the Company’s sales arrangements do not include a general right of return. The Company offers post-warranty period services, which consist principally of the installation and replacement of parts and small-scale modifications to the equipment. The related revenue and costs of revenue are recognized when parts have been delivered and installed, risk of loss has passed to the customer, and collection is probable. The Company does not expect revenue from extended maintenance service contracts to represent a material portion of its revenue in the future. As such, the Company has concluded that its revenue recognition under the adoption of the New Revenue Standard will remain the same as previously reported and will not have material impacts to its condensed consolidated financial statements. The Company incurs costs related to the acquisition of its contracts with customers in the form of sales commissions. Sales commissions are paid to third party representatives and distributors. Contractual agreements with these parties outline commission structures and rates to be paid. Generally speaking, the contracts are all individual procurement decisions by the customers and are not for significant periods of time, nor do they include renewal provisions. As such, all contracts have an economic life of significantly less than a year. Accordingly, the Company expenses sales commissions when incurred in accordance with the practical expedient in the New Revenue Standard when the underlying contract asset is less than one year. These costs are recorded within sales and marketing expenses. Generally, all contracts have expected durations of one year or less. Accordingly, the Company applies the practical expedient allowed in the New Revenue Standard and does not disclose information about remaining performance obligations that have original expected durations of one year or less. The Company does not incur any costs to fulfill the contracts with customers that are not already reported in compliance with another applicable standard (for example, inventory or plant, property and equipment). Recent Accounting Pronouncements Not Yet Adopted In June 2018, the FASB issued ASU 2018-07, Compensation — Stock Compensation (Topic 718) — Improvements to Nonemployee Share-Based Payment Accounting In February 2018, the FASB issued ASU No. 2018-02, Income Statement—Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income In July 2017, the FASB issued ASU No. 2017-11, Earnings Per Share (Topic 260); Distinguishing Liabilities from Equity (Topic 480); Derivatives and Hedging (Topic 815): (Part I) Accounting for Certain Financial Instruments with Down Round Features, (Part II) Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Noncontrolling Interests with a Scope Exception In January 2017, the FASB issued ASU No. 2017-04, Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) Leases Leases

Summary of Significant Accoun23

Summary of Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Calculation of basic and diluted net loss per common share	Three Months Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 Numerator: Net income (loss) $ 3,215 $ (481 ) $ 435 $ (2,955 ) Net income (loss) attributable to non-controlling interest - 177 - (208 ) Net income (loss) attributable to ACM, basic and diluted $ 3,215 $ (658 ) $ 435 $ (2,747 ) Denominator: Weighted average shares outstanding, basic 15,838,540 5,086,989 15,611,863 4,927,973 Effect of dilutive securities 2,281,193 - 2,057,787 - Weighted average shares outstanding, diluted 18,119,733 5,086,989 17,669,650 4,927,973 Net income (loss) attributable to ACM per common share: Basic $ 0.20 $ (0.13 ) $ 0.03 $ (0.56 ) Diluted $ 0.18 $ (0.13 ) $ 0.02 $ (0.56 )

Accounts Receivable (Tables)

Accounts Receivable (Tables)	6 Months Ended
	Jun. 30, 2018
Receivables [Abstract]
Accounts receivable	June 30, December 31, 2018 2017 Accounts receivable $ 33,289 $ 26,762 Less: Allowance for doubtful accounts - - Total $ 33,289 $ 26,762

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2018
Inventory Disclosure [Abstract]
Inventory	June 30, 2018 December 31, 2017 Raw materials $ 14,827 $ 6,181 Work in process 7,235 4,328 Finished goods 5,469 4,879 Total inventory, gross 27,531 15,388 Inventory reserve - - Total inventory, net $ 27,531 $ 15,388

Property, Plant and Equipment26

Property, Plant and Equipment, Net (Tables)	6 Months Ended
	Jun. 30, 2018
Property, Plant and Equipment [Abstract]
Property, plant and equipment	June 30, 2018 December 31, 2017 Manufacturing equipment $ 9,573 $ 9,660 Office equipment 525 463 Transportation equipment 201 203 Leasehold improvement 245 277 Total cost 10,544 10,603 Less: Total accumulated depreciation (8,282 ) (8,263 ) Construction in progress 788 - Total property, plant and equipment, net $ 3,050 $ 2,340

Short-Term Borrowings (Tables)

Short-Term Borrowings (Tables)	6 Months Ended
	Jun. 30, 2018
Debt Disclosure [Abstract]
Short-term borrowings	June 30, 2018 December 31, 2017 Line of credit up to $30 million RMB from Bank of China Pudong Branch, due on March 5, 2018 with annual interest rate of 5.69%, secured by certain of the Company’s intellectual property and fully repaid on March 5, 2018 $ - $ 2,219 Line of credit up to $30 million RMB from Bank of China Pudong Branch, due on September 11, 2018 with annual interest rate of 5.69%, secured by certain of the Company’s intellectual property and guaranteed by the Company’s Chief Executive Officer and President (“CEO”) 1,511 - Line of credit up to $30 million RMB from Bank of China Pudong Branch, due on September 24, 2018 with annual interest rate of 5.69%, secured by certain of the Company’s intellectual property and guaranteed by the CEO 1,511 - Line of credit up to $25 million RMB from Bank of Shanghai Pudong Branch, due on various dates of October, 2018 with an annual interest rate of 5.66%, guaranteed by the CEO and fully repaid on May 8, 2018 - 2,111 Line of credit up to $50 million RMB from Bank of Shanghai Pudong Branch, due on April 17, 2019 with an annual interest rate of 4.99%, guaranteed by the CEO 3,133 - Line of credit up to $5 million RMB from Shanghai Rural Commercial Bank, due on November 21, 2018 with an annual interest rate of 5.44%, guaranteed by the CEO and pledged by accounts receivable 755 765 Line of credit up to $10 million RMB from Shanghai Rural Commercial Bank, due on January 23,2019 with an annual interest rate of 5.44%, guaranteed by the CEO and pledged by accounts receivable 1,511 - Line of credit up to $10 million RMB from Bank of Communications, due on December 28 2018 with an annual interest rate of 5.66% 1,511 - Total $ 9,932 $ 5,095

Other Payable and Accrued Exp28

Other Payable and Accrued Expenses (Tables)	6 Months Ended
	Jun. 30, 2018
Payables and Accruals [Abstract]
Other payable and accrued expenses	June 30, 2018 December 31, 2017 Lease expenses and payable for leasehold improvement due to a related party (note 11) $ 162 $ 2,024 Accrued commissions 1,574 836 Accrued warranty 1,256 839 Accrued payroll 432 745 Accrued professional fees 253 60 Accrued machine testing fees 1,295 684 Others 1,546 849 Total $ 6,518 $ 6,037

Other Long-Term Liabilities (Ta

Other Long-Term Liabilities (Tables)	6 Months Ended
	Jun. 30, 2018
Other Liabilities Disclosure [Abstract]
Other long-term liabilities	June 30, 2018 December 31, 2017 Subsidies to Stress Free Polishing project, commenced in 2008 and 2017 $ 1,720 $ 1,952 Subsidies to Electro Copper Plating project, commenced in 2014 3,943 4,265 Subsidies to Polytetrafluoroethylene, commenced in 2018 206 - Total $ 5,869 $ 6,217

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2018
Leases [Abstract]
Summary of future minimum lease payments under non-cancelable lease agreements	June 30, 2018 December 31, 2017 2018 $ 601 $ 50 2019 1,383 22 2020 1,362 - 2021 1,392 - 2022 1,428 - Total $ 6,166 $ 72

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2018
Employee Stock Option [Member]
Summary of share option activities	Number of Option Shared Weighted Average Grant Date Fair Value Weighted Average Exercise Price Weighted Average Remaining Contractual Term Outstanding at December 31, 2017 2,045,616 $ 0.66 $ 2.46 7.57 years Granted 500,000 2.26 5.31 Exercised (118,059 ) 0.50 2.07 Expired (2,575 ) 0.55 3.00 Forfeited (100,887 ) 0.77 3.18 Outstanding at June 30, 2018 2,324,095 1.01 3.05 7.58 years Vested and exercisable at June 30, 2018 1,168,983
Summary of assumptions used to determine fair value of share options granted	January 25, 2018 Fair value of common share(1) $ 5.31 Expected term in years(2) 6.25 Volatility(3) 39.14 % Risk free interest rate(4) 2.55 % Expected dividend(5) 0.00 % (1) Exercise price is market close price of Class A common stock at grant date of January 25, 2018. (2) Expected term of share options is based on the average of the vesting period and the contractual term for each grant, in accordance with Staff Accounting Bulletin 110. (3) Volatility is calculated based on the historical volatility of comparable companies in the period equal to the expected term of each grant. (4) Risk-free interest rate is based on the yields of U.S. Treasury securities with maturities similar to the expected term of the share options in effect at the time of grant. (5) Expected dividend is assumed to be 0% as ACM has no history or expectation of paying dividends on its common stock.
Non Employee Awards [Member]
Summary of share option activities	Number of Option Shares Weighted Average Grant Date Fair Value Weighted Average Exercise Price Weighted Average Remaining Contractual Term Outstanding at December 31, 2017 1,326,676 $ 0.78 2.52 7.54 years Granted - - - - Exercised (16,667 ) 0.50 3.00 - Expired - - - - Forfeited - - - - Outstanding at June 30, 2018 1,310,009 $ 0.76 2.51 7.03 years Vested and exercisable at June 30, 2018 900,569
Summary of assumptions used to determine fair value of share options granted	June 30, 2018 Fair value of common share(1) $ 10.78 Expected term in years(2) 3.08-5.36 Volatility(3) 43.50-45.48 % Risk free interest rate(4) 2.39-2.73 % Expected dividend(5) 0.00 % (1) Exercise price was market close price of Class A common stock at June 30, 2018. (2) Expected term of share options is based on the average of the vesting period and the contractual term for each grant, in accordance with Staff Accounting Bulletin 110. (3) Volatility is calculated based on the historical volatility of comparable companies in the period equal to the expected term of each grant. (4) Risk-free interest rate is based on the yields of U.S. Treasury securities with maturities similar to the expected term of the share options in effect at the time of grant. (5) Expected dividend is assumed to be 0% as ACM has no history or expectation of paying a dividend on its common stock.

Summary of Significant Accoun32

Summary of Significant Accounting Policies (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Numerator:
Net income (loss)	$ 3,215	$ (481)	$ 435	$ (2,955)
Net income (loss) attributable to non-controlling interest	0	177	0	(208)
Net income (loss) attributable to ACM, basic and diluted	$ 3,215	$ (658)	$ 435	$ (2,747)
Denominator:
Weighted average shares outstanding, basic	15,838,540	5,086,989	15,611,863	4,927,973
Effect of dilutive securities	2,281,193	0	2,057,787	0
Weighted average shares outstanding, diluted	18,119,733	5,086,989	17,669,650	4,927,973
Net income (loss) attributable to ACM per common share:
Basic	$ .20	$ (0.13)	$ 0.03	$ (0.56)
Diluted	$ 0.18	$ (0.13)	$ 0.02	$ (0.56)

Accounts Receivable (Details)

Accounts Receivable (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Receivables [Abstract]
Accounts receivable	$ 33,289	$ 26,762
Less: Allowance for doubtful accounts	0	0
Total	$ 33,289	$ 26,762

Accounts Receivable (Details Na

Accounts Receivable (Details Narrative) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Receivables [Abstract]
Allowance for doubtful accounts	$ 0	$ 0
Accounts receivable were pledged as collateral for borrowings	$ 2,266	$ 1,805

Inventories (Details)

Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Raw materials	$ 14,827	$ 6,181
Work in process	7,235	4,328
Finished goods	5,469	4,879
Total inventory, gross	27,531	15,388
Inventory reserve	0	0
Total inventory, net	$ 27,531	$ 15,388

Inventories (Details Narrative)

Inventories (Details Narrative) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Inventory reserve	$ 0	$ 0
Inventory pledged as collateral for borrowings	$ 0	$ 0

Property, Plant and Equipment (

Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Total cost	$ 10,544	$ 10,603
Less: Total accumulated depreciation	(8,282)	(8,263)
Construction in progress	788	0
Total property, plant and equipment, net	3,050	2,340
Tools, Dies and Molds [Member]
Property, Plant and Equipment [Line Items]
Total cost	9,573	9,660
Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Total cost	525	203
Transportation Equipment [Member]
Property, Plant and Equipment [Line Items]
Total cost	201	277
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total cost	$ 245	$ 463

Property, Plant and Equipment38

Property, Plant and Equipment, Net (Details Narrative) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Property Plant And Equipment Capitalized Interest Costs [Abstract]
Depreciation expense	$ 88	$ 66	$ 173	$ 118

Short-Term Borrowing (Details)

Short-Term Borrowing (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Short-term Debt [Line Items]
Short-term borrowings	$ 9,932	$ 5,095
Short-term borrowings 1
Short-term Debt [Line Items]
Short-term borrowings	0	2,219
Short-term borrowings 2
Short-term Debt [Line Items]
Short-term borrowings	1,511	0
Short-term borrowings 3
Short-term Debt [Line Items]
Short-term borrowings	1,511	0
Short-term borrowings 4
Short-term Debt [Line Items]
Short-term borrowings	0	2,111
Short-term borrowings 5
Short-term Debt [Line Items]
Short-term borrowings	3,133	0
Short-term borrowings 6
Short-term Debt [Line Items]
Short-term borrowings	755	765
Short-term borrowings 7
Short-term Debt [Line Items]
Short-term borrowings	1,511	0
Short-term borrowings 8
Short-term Debt [Line Items]
Short-term borrowings	$ 1,511	$ 0

Short-Term Borrowings (Details

Short-Term Borrowings (Details Narrative) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Debt Disclosure [Abstract]
Interest expense related to short-term borrowings	$ 149	$ 86	$ 252	$ 164

Other Payable and Accrued Exp41

Other Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Payables and Accruals [Abstract]
Lease expenses and payable for leasehold improvement due to a related party (note 11)	$ 162	$ 2,024
Commissions	1,574	836
Accrued warranty	1,256	839
Accrued payroll	432	745
Accrued professional fees	253	60
Accrued machine testing fee	1,295	684
Others	1,546	849
Total	$ 6,518	$ 6,037

Other Long-Term Liabilities (De

Other Long-Term Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Other Long Term Liabilities [Line Items]
Other long-term liabilities	$ 5,869	$ 6,217
Subsidies to Stress Free Polishing project [Member]
Other Long Term Liabilities [Line Items]
Other long-term liabilities	1,720	1,952
Subsidies to Electro Copper Plating project [Member]
Other Long Term Liabilities [Line Items]
Other long-term liabilities	3,943	4,265
Subsidies to Polytetrafluoroethylene [Member]
Other Long Term Liabilities [Line Items]
Other long-term liabilities	$ 206	$ 0

Related Party Balances and Tr43

Related Party Balances and Transactions (Details Narrative) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Ninebell [Member]
Related Party Transaction [Line Items]
Purchased materials amount	$ 1,865	$ 981	$ 2,835	$ 1,821
Accounts payable-related party	1,498		1,498		$ 2,118
Shanghai Zhangjiang Group Co., Ltd. [Member]
Related Party Transaction [Line Items]
Leasing expense under lease agreement	$ 147	$ 137	319	296
Lease expenses and payable for leasehold improvement due to a related party			$ 162	$ 2,024

Leases (Details)

Leases (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Operating Leases, Future Minimum Payments Receivable [Abstract]
2,018	$ 601	$ 50
2,019	1,383	22
2,020	1,362	0
2,021	1,392	0
2,022	1,428	0
Total	$ 6,166	$ 72

Leases (Details Narrative)

Leases (Details Narrative) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Leases [Abstract]
Lease expense	$ 563	$ 189	$ 1,058	$ 504

Common Stock (Details Narrative

Common Stock (Details Narrative) - $ / shares	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Common Class A [Member]
Class of Stock [Line Items]
Common stock, shares authorized	100,000,000	100,000,000	100,000,000
Common stock, par value	$ .0001	$ .0001	$ 0.0001
Common stock, shares issued	13,957,339	13,957,339	12,935,546
Common stock, shares outstanding	13,957,339	13,957,339	12,935,546
Shares of common stock issued for stock option exercises	77,504	134,726
Common Class B [Member]
Class of Stock [Line Items]
Common stock, shares authorized	7,303,533	7,303,533	7,303,533
Common stock, par value	$ .0001	$ .0001	$ 0.0001
Common stock, shares issued	1,920,173	1,920,173	2,409,738
Common stock, shares outstanding	1,920,173	1,920,173	2,409,738

Stock-Based Compensation (Detai

Stock-Based Compensation (Details) - $ / shares	6 Months Ended
	Jun. 30, 2018
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Option Shares, Outstanding, Beginning balance	2,045,616
Number of Option Shares, Outstanding, Granted	500,000
Number of Option Shares, Outstanding, Exercised	(118,059)
Number of Option Shares, Outstanding, Expired	(2,575)
Number of Option Shares, Outstanding, Forfeited	(100,887)
Number of Option Shares, Outstanding, Ending balance	2,324,095
Vested and exercisable	1,168,983
Weighted Average Grant Date Fair Value, Outstanding, Beginning balance	$ .66
Weighted Average Grant Date Fair Value, Granted	2.26
Weighted Average Grant Date Fair Value, Exercised	.50
Weighted Average Grant Date Fair Value, Expired	.55
Weighted Average Grant Date Fair Value, Forfeited	.77
Weighted Average Grant Date Fair Value, Outstanding, Ending balance	1.01
Weighted Average Exercise Price, Outstanding, Beginning balance	2.46
Weighted Average Exercise Price, Granted	5.31
Weighted Average Exercise Price, Exercised	2.07
Weighted Average Exercise Price, Expired	3
Weighted Average Exercise Price, Forfeited	3.18
Weighted Average Exercise Price, Outstanding, Ending balance	$ 3.05
Weighted Average Remaining Contractual Term, Outstanding	7 years 6 months 29 days
Non Employee Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Option Shares, Outstanding, Beginning balance	1,326,676
Number of Option Shares, Outstanding, Granted	0
Number of Option Shares, Outstanding, Exercised	(16,667)
Number of Option Shares, Outstanding, Expired	0
Number of Option Shares, Outstanding, Forfeited	0
Number of Option Shares, Outstanding, Ending balance	1,310,009
Vested and exercisable	900,569
Weighted Average Grant Date Fair Value, Outstanding, Beginning balance	$ .78
Weighted Average Grant Date Fair Value, Granted	.00
Weighted Average Grant Date Fair Value, Exercised	.50
Weighted Average Grant Date Fair Value, Expired	.00
Weighted Average Grant Date Fair Value, Forfeited	.00
Weighted Average Grant Date Fair Value, Outstanding, Ending balance	.76
Weighted Average Exercise Price, Outstanding, Beginning balance	2.52
Weighted Average Exercise Price, Granted	.00
Weighted Average Exercise Price, Exercised	3
Weighted Average Exercise Price, Expired	.00
Weighted Average Exercise Price, Forfeited	.00
Weighted Average Exercise Price, Outstanding, Ending balance	$ 2.51
Weighted Average Remaining Contractual Term, Outstanding	7 years 11 days

Stock-Based Compensation (Det48

Stock-Based Compensation (Details 1)	6 Months Ended
	Jun. 30, 2018$ / shares
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of common share	$ 5.31
Expected term in years	6 years 3 months
Volatility	39.14%
Risk-free interest rate	2.55%
Expected dividend	0.00%
Non Employee Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of common share	$ 10.78
Expected dividend	0.00%
Non Employee Awards [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term in years	3 years 29 days
Volatility	43.50%
Risk-free interest rate	2.39%
Non Employee Awards [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term in years	5 years 4 months 10 days
Volatility	45.48%
Risk-free interest rate	2.73%

Stock-Based Compensation (Det49

Stock-Based Compensation (Details Narrative) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 170	$ 67	$ 263	$ 128
Unrecognized employee stock-based compensation expense, net of estimated forfeitures	1,495		$ 1,495		$ 1,690
Weighted-average period over which unrecognized compensation is expected to be recognized			1 year 10 months 2 days		1 year 9 months 7 days
Non Employee Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 14	$ 446	$ 2,097	$ 1,220

Income Taxes (Details Narrative

Income Taxes (Details Narrative) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Taxes [Line Items]
Statutory U.S federal income tax rate			21.00%
Income tax provision (benefit)	$ 164	$ (32)	$ 186	$ 749
Unrecognized tax benefits	$ 44		$ 44
Minimum [Member]
Income Taxes [Line Items]
Statutory Chinese income tax rate			15.00%
Maximum [Member]
Income Taxes [Line Items]
Statutory Chinese income tax rate			25.00%

Commitments and Contingencies (

Commitments and Contingencies (Details Narrative) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments	$ 759	$ 0