Significant Accounting Policies	3 Months Ended
Mar. 31, 2018
Accounting Policies [Abstract]
Significant Accounting Policies	2. Significant Accounting Policies The Company made no changes to its significant accounting policies during the three months ended March 31, 2018 with the exception of the adoption of ASC 606 as discussed in Note 3. Revenue. Reclassification of Prior Year Presentation Certain prior year amounts have been reclassified for consistency with the current period presentation. These reclassifications had no effect on the reported results of operations. During the second quarter of 2017, the Company concluded that it was appropriate to classify items in the statement of operations to conform with operating metrics reported to investors and the manner in which management evaluates financial performance and to classify warranty liability separately as current and non-current liabilities. Accordingly, the Company revised the classification of certain items to report items in the statement of operations and balance sheet. These changes in classification did not change the previously reported operating income (loss) in the statement of operations, or cash generated (used) from operations in the statement of cash flows, or operating income (loss) for any business segment. Recently Issued Accounting Standards ASU 2018-05 On March 13, 2018, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2018-05 (“ASU 2018-05”), Income Taxes (Topic 740) – Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118, which was issued to state the income tax accounting implications of the Tax Cuts and Jobs Act (“TCJA”). The guidance clarifies the measurement period timeframe, changes in subsequent reporting periods and reporting requirements as a result of the TCJA. The measurement period begins in the period that includes the TCJA’s enactment date which was December 22, 2017 and as a result the Company has reflected the impact of this ASU on the tax provision and deferred tax calculation as of December 31, 2017. ASU 2017-11 On July 13, 2017, the FASB issued Accounting Standards Update No. 2017-11 (“ASU 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. The amendments in Part I of this Update change the classification analysis of certain equity-linked financial instruments (or embedded features) with down round features. When determining whether certain financial instruments should be classified as liabilities or equity instruments, a down round feature no longer precludes equity classification when assessing whether the instrument is indexed to an entity’s own stock. The amendments also clarify existing disclosure requirements for equity-classified instruments. The amendments in Part II of this Update recharacterize the indefinite deferral of certain provisions of Topic 480 that now are presented as pending content in the Codification, to a scope exception. Those amendments do not have an accounting effect. For public business entities, the amendments in Part I of this Update are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The amendments in Part II of this Update do not require any transition guidance because those amendments do not have an accounting effect. The Company will assess the impact of ASU 2017-11 on any derivative instruments entered into in the future. ASU 2017-04 On January 26, 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2017-04 (“ASU 2017-04”), Intangibles – Goodwill and Other (Topic 350): Simplifying the Accounting for Goodwill Impairment, which was issued to simplify the accounting for goodwill impairment. This ASU removes Step 2 of the goodwill impairment test, which requires a hypothetical purchase price allocation. Impairment will now be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. All other goodwill impairment guidance remains largely unchanged. The standard is effective for financial statements issued for fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed after January 1, 2017. The Company is assessing the impact of ASU 2017-04 on its consolidated financial statements. ASU 2016-20 On December 21, 2016, the FASB issued Accounting Standards Update No. 2016-20 (“ASU 2016-20”), Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers. This ASU provides technical corrections and improvements to Topic 606. This ASU is effective for the Company on January 1, 2018, which coincides with the effective date of ASU 2014-09 (as defined below). The Company has adopted this ASU effective January 1, 2018. ASU 2016-02 On February 25, 2016, the FASB issued Accounting Standards Update No. 2016-02 (“ASU 2016-02”), Leases (Topic 842), which sets out the principles for the recognition, measurement, presentation and disclosure of leases for both parties to a contract (i.e. lessees and lessors). The new standard requires lessees to apply a dual approach, classifying leases as either finance or operating leases based on the principle of whether or not the lease is effectively a financed purchase by the lessee. This classification will determine whether lease expense is recognized based on an effective interest method or on a straight-line basis over the term of the lease, respectively. A lessee is also required to record a right-of-use asset and a lease liability for all leases with a term of greater than 12 months regardless of their classification. Leases with a term of 12 months or less will be accounted for similar to existing guidance for operating leases today. The new standard requires lessors to account for leases using an approach that is substantially equivalent to existing guidance for sales-type leases, direct financing leases and operating leases. The standard is effective for financial statements issued for fiscal years beginning after December 15, 2018, and interim periods therein. The Company currently expects that upon adoption of ASU 2016-02, right-of-use assets and lease liabilities will be recognized on the balance sheet in amounts that will be material. ASU 2014-09 On May 28, 2014, the FASB issued Accounting Standards Update No. 2014-09 (“ASU 2014-09”), which created Topic 606, Revenue from Contracts with Customers. This standard outlines a single comprehensive model for companies to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The core principle of the revenue model is that revenue is recognized when a customer obtains control of a good or service. A customer obtains control when it has the ability to direct the use of and obtain the benefits from the good or service. Transfer of control is not the same as transfer of risks and rewards, as it is considered in current guidance. In August 2015, the FASB issued Accounting Standards Update No. 2015-14, Revenue from Contracts with Customers – Deferral of the Effective Date, which defers the effective date of ASU 2014-09 one year. ASU 2014-09, as deferred by ASU 2015-14, will be effective for the first interim period within annual reporting periods beginning after December 15, 2017. The two permitted transition methods under the new standard are the full retrospective method, in which case the standard would be applied to each prior reporting period presented and the cumulative effect of applying the standard would be recognized at the earliest period shown, or the modified retrospective method, in which case the cumulative effect of applying the standard would be recognized at the date of initial application. The Company has adopted this ASU as of January 1, 2018 as discussed in Note 3.

Significant Accounting Policies

3 Months Ended

Mar. 31, 2018

2. Significant Accounting Policies

The Company made no changes to its significant accounting policies during the three months ended March 31, 2018 with the exception of the adoption of ASC 606 as discussed in Note 3. Revenue.

Reclassification of Prior Year Presentation

Certain prior year amounts have been reclassified for consistency with the current period presentation. These reclassifications had no effect on the reported results of operations. During the second quarter of 2017, the Company concluded that it was appropriate to classify items in the statement of operations to conform with operating metrics reported to investors and the manner in which management evaluates financial performance and to classify warranty liability separately as current and non-current liabilities. Accordingly, the Company revised the classification of certain items to report items in the statement of operations and balance sheet. These changes in classification did not change the previously reported operating income (loss) in the statement of operations, or cash generated (used) from operations in the statement of cash flows, or operating income (loss) for any business segment.

Recently Issued Accounting Standards

ASU 2018-05

On March 13, 2018, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2018-05 (“ASU 2018-05”), Income Taxes (Topic 740) – Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118, which was issued to state the income tax accounting implications of the Tax Cuts and Jobs Act (“TCJA”). The guidance clarifies the measurement period timeframe, changes in subsequent reporting periods and reporting requirements as a result of the TCJA. The measurement period begins in the period that includes the TCJA’s enactment date which was December 22, 2017 and as a result the Company has reflected the impact of this ASU on the tax provision and deferred tax calculation as of December 31, 2017.

ASU 2017-11

On July 13, 2017, the FASB issued Accounting Standards Update No. 2017-11 (“ASU 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. The amendments in Part I of this Update change the classification analysis of certain equity-linked financial instruments (or embedded features) with down round features. When determining whether certain financial instruments should be classified as liabilities or equity instruments, a down round feature no longer precludes equity classification when assessing whether the instrument is indexed to an entity’s own stock. The amendments also clarify existing disclosure requirements for equity-classified instruments. The amendments in Part II of this Update recharacterize the indefinite deferral of certain provisions of Topic 480 that now are presented as pending content in the Codification, to a scope exception. Those amendments do not have an accounting effect. For public business entities, the amendments in Part I of this Update are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The amendments in Part II of this Update do not require any transition guidance because those amendments do not have an accounting effect. The Company will assess the impact of ASU 2017-11 on any derivative instruments entered into in the future.

ASU 2017-04

On January 26, 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2017-04 (“ASU 2017-04”), Intangibles – Goodwill and Other (Topic 350): Simplifying the Accounting for Goodwill Impairment, which was issued to simplify the accounting for goodwill impairment. This ASU removes Step 2 of the goodwill impairment test, which requires a hypothetical purchase price allocation. Impairment will now be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. All other goodwill impairment guidance remains largely unchanged. The standard is effective for financial statements issued for fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed after January 1, 2017. The Company is assessing the impact of ASU 2017-04 on its consolidated financial statements.

ASU 2016-20

On December 21, 2016, the FASB issued Accounting Standards Update No. 2016-20 (“ASU 2016-20”), Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers. This ASU provides technical corrections and improvements to Topic 606. This ASU is effective for the Company on January 1, 2018, which coincides with the effective date of ASU 2014-09 (as defined below). The Company has adopted this ASU effective January 1, 2018.

ASU 2016-02

On February 25, 2016, the FASB issued Accounting Standards Update No. 2016-02 (“ASU 2016-02”), Leases (Topic 842), which sets out the principles for the recognition, measurement, presentation and disclosure of leases for both parties to a contract (i.e. lessees and lessors). The new standard requires lessees to apply a dual approach, classifying leases as either finance or operating leases based on the principle of whether or not the lease is effectively a financed purchase by the lessee. This classification will determine whether lease expense is recognized based on an effective interest method or on a straight-line basis over the term of the lease, respectively. A lessee is also required to record a right-of-use asset and a lease liability for all leases with a term of greater than 12 months regardless of their classification. Leases with a term of 12 months or less will be accounted for similar to existing guidance for operating leases today. The new standard requires lessors to account for leases using an approach that is substantially equivalent to existing guidance for sales-type leases, direct financing leases and operating leases. The standard is effective for financial statements issued for fiscal years beginning after December 15, 2018, and interim periods therein. The Company currently expects that upon adoption of ASU 2016-02, right-of-use assets and lease liabilities will be recognized on the balance sheet in amounts that will be material.

ASU 2014-09

On May 28, 2014, the FASB issued Accounting Standards Update No. 2014-09 (“ASU 2014-09”), which created Topic 606, Revenue from Contracts with Customers. This standard outlines a single comprehensive model for companies to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The core principle of the revenue model is that revenue is recognized when a customer obtains control of a good or service. A customer obtains control when it has the ability to direct the use of and obtain the benefits from the good or service. Transfer of control is not the same as transfer of risks and rewards, as it is considered in current guidance.

In August 2015, the FASB issued Accounting Standards Update No. 2015-14, Revenue from Contracts with Customers – Deferral of the Effective Date, which defers the effective date of ASU 2014-09 one year. ASU 2014-09, as deferred by ASU 2015-14, will be effective for the first interim period within annual reporting periods beginning after December 15, 2017. The two permitted transition methods under the new standard are the full retrospective method, in which case the standard would be applied to each prior reporting period presented and the cumulative effect of applying the standard would be recognized at the earliest period shown, or the modified retrospective method, in which case the cumulative effect of applying the standard would be recognized at the date of initial application. The Company has adopted this ASU as of January 1, 2018 as discussed in Note 3.