Summary of Significant Accounting Policies	9 Months Ended
Sep. 30, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. Summary of Significant Accounting Policies During the three and nine months ended September 30, 2018, there have been no changes in our significant accounting policies as described in the Company’s 2017Annual Report on Form 10-K, except as discussed below: Recent Accounting Pronouncements— In February 2018, the FASB released ASU 2018-2, “Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” This standard update addresses a specific consequence of the Tax Cuts and Jobs Act (“U.S tax reform”) and allows a reclassification from accumulated other comprehensive income to retained earnings for the stranded tax effects resulting from U.S. tax reform. Consequently, the update eliminates the stranded tax effects that were created as a result of the historical U.S. federal corporate income tax rate to the newly enacted U.S. federal corporate income tax rate. The guidance is effective for financial statements issued for fiscal years beginning after December 15, 2018. Early adoption is permitted. Management is currently evaluating the adoption date and the impact of this new standard on the Company’s condensed consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). The new guidance requires entities to recognize assets and liabilities for leases with terms of more than 12 months and additional disclosures to better understand the amount, timing and uncertainty of cash flows arising from leases. The guidance is effective for financial statements issued for fiscal years beginning after December 15, 2018. Early adoption is permitted. Management has concluded that it will not early adopt this standard and is currently evaluating the impact of this new standard on the Company’s condensed consolidated financial statements. The Company expects that most of operating lease commitments will be subject to the new standard and recognized as lease liabilities and right-of-use assets upon adoption, which will increase total assets and total liabilities. Adopted Revenue Recognition— In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers” related to the recognition and reporting of revenue that establishes a comprehensive new revenue recognition model designed to depict the transfer of goods or services to a customer in an amount that reflects the consideration the entity expects to receive in exchange for those goods or services. The guidance allows for the use of either the full or modified retrospective transition method. This new standard was effective on January 1, 2018. Under the new standard, the Company used the modified retrospective method and recognizes all revenue on sales to distributors upon shipment and transfer of control (known as “sell-in” revenue recognition), rather than deferring recognition until distributor report that they have sold the product to their customers (known as “sell-through” revenue recognition). This change in methodology will cause a shift in the timing of when revenue is recognized for this class of customers comparing to prior periods. The Company provides some of its distributors rights that would result in a deferral of revenue under the revenue standards before the adoption. Accordingly, the Company recorded $0.1 million of deferred revenue balance to retained earnings upon adoption of this new standard on the Company’s condensed consolidated financial statements. As a result of the adoption, the Company revised its accounting policy for revenue recognition as detailed below: Revenue Recognition: Product revenues consist of sales to customers which are mainly comprised of end customers, their manufacturing subcontractors, and distributors. Revenue is recognized after the Company (a) identifies the contract with a customer, (b) identifies the performance obligations in the contract, (c) determines the transaction price, (d) allocates the transaction price to the performance obligations in the contract, and (e) satisfies the performance obligation when the control of products is transferred to the customer. The Company considers the purchase orders, which in some cases are governed by master sales agreements, to be the contract with its customers. In evaluating the existence of the contract, the Company considers various factors relative to the contract including the customer’s ability to pay amounts due under the contract. The Company is obligated to deliver a fixed number of products to its customers, each of which is distinct, and have been separately identified to be the performance obligations. The Company generally provides an assurance warranty that its products will substantially conform to the published specifications for twelve months from the date of shipment. The Company has not provided services in addition to the standard warranty. As such, the Company does not consider activities related to such warranty, if any, to be a separate performance obligation. In determining the transaction price, the Company considers the variability of the amount due under the contract including amounts subject to refund or adjustment when determining the net consideration to which the Company expects to be entitled within the contract. As the Company’s standard payment terms are less than one year, the Company has elected the practical expedient under the accounting guidance and does not assess whether the contract has a significant financing component. The Company allocates revenue to each product based on their relative standalone selling price. Frequently, the Company receives orders for products to be delivered over multiple dates that may extend across several reporting periods. The Company invoices for each delivery upon shipment and recognizes revenues for each distinct product delivered, assuming transfer of control has occurred. As scheduled delivery dates are within one year, under the optional exemption revenues allocated to future shipments of partially completed contracts are not disclosed. Sales to certain of end customers include limited rebates. The Company estimates these rebates, using historical volumes of such rebates, at the time revenue is recognized. Such rebates were not significant in any of the periods presented, and the differences between the actual amount of such rebates and our estimates also were not significant. Sales to most of our distributors are made under contracts that allow for pricing credits upon shipment to the end customer and rights of return for on hand inventory at the distributor. Under the accounting guidance, revenue is recognized at the point of transfer of control to the distributor, which typically occurs at the point of shipment. The Company adjusts the transaction price for any unprocessed claims and for future estimated pricing credits which is recorded in accrued liabilities on our condensed consolidated balance sheets. The adjustments for these estimates are recorded as a reduction to revenue in the same period when the related revenue is recorded and is calculated based on an analysis of the historical actual claims received, both in aggregate and at a distributor level to the extent that it is probable that a significant future reversal of revenue will not occur. Historically, adjustments for actual pricing credits and product returns have not been significantly differed from the amounts estimated by the Company. As of September 30, 2018, the Company has recorded an accrued liability of $0.6 million related to the above adjustments to transaction price.

2. Summary of Significant Accounting Policies

During the three and nine months ended September 30, 2018, there have been no changes in our significant accounting policies as described in the Company’s 2017Annual Report on Form 10-K, except as discussed below:

Recent Accounting Pronouncements—

In February 2018, the FASB released ASU 2018-2, “Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” This standard update addresses a specific consequence of the Tax Cuts and Jobs Act (“U.S tax reform”) and allows a reclassification from accumulated other comprehensive income to retained earnings for the stranded tax effects resulting from U.S. tax reform. Consequently, the update eliminates the stranded tax effects that were created as a result of the historical U.S. federal corporate income tax rate to the newly enacted U.S. federal corporate income tax rate. The guidance is effective for financial statements issued for fiscal years beginning after December 15, 2018. Early adoption is permitted. Management is currently evaluating the adoption date and the impact of this new standard on the Company’s condensed consolidated financial statements.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). The new guidance requires entities to recognize assets and liabilities for leases with terms of more than 12 months and additional disclosures to better understand the amount, timing and uncertainty of cash flows arising from leases. The guidance is effective for financial statements issued for fiscal years beginning after December 15, 2018. Early adoption is permitted. Management has concluded that it will not early adopt this standard and is currently evaluating the impact of this new standard on the Company’s condensed consolidated financial statements. The Company expects that most of operating lease commitments will be subject to the new standard and recognized as lease liabilities and right-of-use assets upon adoption, which will increase total assets and total liabilities.

Adopted

Revenue Recognition— In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers” related to the recognition and reporting of revenue that establishes a comprehensive new revenue recognition model designed to depict the transfer of goods or services to a customer in an amount that reflects the consideration the entity expects to receive in exchange for those goods or services. The guidance allows for the use of either the full or modified retrospective transition method. This new standard was effective on January 1, 2018.

Under the new standard, the Company used the modified retrospective method and recognizes all revenue on sales to distributors upon shipment and transfer of control (known as “sell-in” revenue recognition), rather than deferring recognition until distributor report that they have sold the product to their customers (known as “sell-through” revenue recognition). This change in methodology will cause a shift in the timing of when revenue is recognized for this class of customers comparing to prior periods. The Company provides some of its distributors rights that would result in a deferral of revenue under the revenue standards before the adoption. Accordingly, the Company recorded $0.1 million of deferred revenue balance to retained earnings upon adoption of this new standard on the Company’s condensed consolidated financial statements. As a result of the adoption, the Company revised its accounting policy for revenue recognition as detailed below:

Revenue Recognition:

Product revenues consist of sales to customers which are mainly comprised of end customers, their manufacturing subcontractors, and distributors. Revenue is recognized after the Company (a) identifies the contract with a customer, (b) identifies the performance obligations in the contract, (c) determines the transaction price, (d) allocates the transaction price to the performance obligations in the contract, and (e) satisfies the performance obligation when the control of products is transferred to the customer.

The Company considers the purchase orders, which in some cases are governed by master sales agreements, to be the contract with its customers. In evaluating the existence of the contract, the Company considers various factors relative to the contract including the customer’s ability to pay amounts due under the contract. The Company is obligated to deliver a fixed number of products to its customers, each of which is distinct, and have been separately identified to be the performance obligations. The Company generally provides an assurance warranty that its products will substantially conform to the published specifications for twelve months from the date of shipment. The Company has not provided services in addition to the standard warranty. As such, the Company does not consider activities related to such warranty, if any, to be a separate performance obligation.

In determining the transaction price, the Company considers the variability of the amount due under the contract including amounts subject to refund or adjustment when determining the net consideration to which the Company expects to be entitled within the contract. As the Company’s standard payment terms are less than one year, the Company has elected the practical expedient under the accounting guidance and does not assess whether the contract has a significant financing component. The Company allocates revenue to each product based on their relative standalone selling price. Frequently, the Company receives orders for products to be delivered over multiple dates that may extend across several reporting periods. The Company invoices for each delivery upon shipment and recognizes revenues for each distinct product delivered, assuming transfer of control has occurred. As scheduled delivery dates are within one year, under the optional exemption revenues allocated to future shipments of partially completed contracts are not disclosed.

Sales to certain of end customers include limited rebates. The Company estimates these rebates, using historical volumes of such rebates, at the time revenue is recognized. Such rebates were not significant in any of the periods presented, and the differences between the actual amount of such rebates and our estimates also were not significant.

Sales to most of our distributors are made under contracts that allow for pricing credits upon shipment to the end customer and rights of return for on hand inventory at the distributor. Under the accounting guidance, revenue is recognized at the point of transfer of control to the distributor, which typically occurs at the point of shipment. The Company adjusts the transaction price for any unprocessed claims and for future estimated pricing credits which is recorded in accrued liabilities on our condensed consolidated balance sheets. The adjustments for these estimates are recorded as a reduction to revenue in the same period when the related revenue is recorded and is calculated based on an analysis of the historical actual claims received, both in aggregate and at a distributor level to the extent that it is probable that a significant future reversal of revenue will not occur. Historically, adjustments for actual pricing credits and product returns have not been significantly differed from the amounts estimated by the Company. As of September 30, 2018, the Company has recorded an accrued liability of $0.6 million related to the above adjustments to transaction price.