Basis of Presentation (Policies)	3 Months Ended
Mar. 31, 2019
Accounting Policies [Abstract]
Recent Accounting Pronouncements	Adoption of Recent Accounting Pronouncements In May 2017, the FASB issued Accounting Standards Update (“ASU 2017‑09,”) “Compensation-Stock Compensation (Topic 718): Scope of Modification Accounting”. ASU 2017-09 provides guidance on determining which changes to the terms and conditions of share-based payment awards require an entity to apply modification accounting under Topic 718. Under the new guidance, modification accounting is required only if the fair value, the vesting conditions, or the classification of the award changes as a result of the change in terms or conditions. For all entities, this standard is effective for financial statements issued for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. The Company adopted ASU 2017‑09 during the first quarter of 2018 and the adoption of this guidance did not have a material impact on the Company’s financial statements. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)”. The new standard establishes a right-of-use (“ROU”) model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. Lessees are required to use a modified retrospective transition approach for capital and operating leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. In July 2018, the FASB issued ASU 2018-10, “Codification Improvements to Topic 842, Leases,” to clarify how to apply certain aspects of the new lease standard. In July 2018, the FASB also issued ASU 2018-11, “Leases (Topic 842): Targeted Improvements”, to give entities other options for transition. The additional options for transition allow an entity to apply the new lease standard at the adoption date and recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption or apply a practical expedient. The new standards are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Company elected to adopt the practical expedient permitted by ASU 2018-11 during the first quarter of 2019. As a result of the adoption, on January 1, 2019, the Company recognized a lease liability of approximately $1.7 million, which represents the present value of the remaining minimum lease payments using an estimated incremental borrowing rate of 5.75%. The Company also derecognized the deferred rent balance, which included deferred tenant improvements, as of December 31, 2018 of approximately $540,000 and recognized an ROU asset of approximately $1.2 million. Lease expense did not change materially as a result of the adoption of ASU 2016-02. In June 2018, the FASB issued ASU 2018‑07, “Compensation-Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting”. ASU 2018-07 expands the scope of Topic 718 to include share-based payment transactions used to acquire goods and services from nonemployees. Companies should apply the requirements of Topic 718 to nonemployee awards except for certain exemptions specified in the amendment. The guidance is effective for fiscal years beginning after December 15, 2018, including interim reporting periods within those fiscal years. Early adoption is permitted, but no earlier than the Company’s adoption date of ASU 2014‑09 “Revenue from Contracts with Customers (Topic 606)”. The Company adopted ASU 2018‑07 during the first quarter of 2019 and the adoption of this guidance did not have a material impact on the Company’s financial statements as all outstanding non-employee share-based awards have fully vested. In July 2018, the FASB issued ASU 2018-09, “Codification Improvements”, which facilitates amendments to a variety of topics to clarify, correct errors in, or make minor improvements to the accounting standards codification. The effective date of the standard is dependent on the facts and circumstances of each amendment. Some amendments do not require transition guidance and will be effective upon the issuance of this standard. A majority of the amendments in ASU 2018-09 will be effective for fiscal years beginning after December 15, 2018. The Company adopted ASU 2018-09 during the first quarter of 2019 and the adoption of this guidance did not have a material impact on the Company’s financial statements. Recent Accounting Pronouncements In August 2018, the FASB issued ASU 2018‑13, “Fair Value Measurement - Disclosure Framework (Topic 820)”. The updated guidance improves the disclosure requirements on fair value measurements. The updated guidance is effective for fiscal years beginning after December 15, 2019, including interim reporting periods within those fiscal years. Early adoption is permitted for any removed or modified disclosures. The Company does not expect the adoption of this ASU will have a significant impact on its financial statements. The Company does not discuss recent pronouncements that are not anticipated to have an impact on or are unrelated to its financial condition, results of operations, cash flows or disclosures.

Adoption of Recent Accounting Pronouncements

In May 2017, the FASB issued Accounting Standards Update (“ASU 2017‑09,”) “Compensation-Stock Compensation (Topic 718): Scope of Modification Accounting”. ASU 2017-09 provides guidance on determining which changes to the terms and conditions of share-based payment awards require an entity to apply modification accounting under Topic 718. Under the new guidance, modification accounting is required only if the fair value, the vesting conditions, or the classification of the award changes as a result of the change in terms or conditions. For all entities, this standard is effective for financial statements issued for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. The Company adopted ASU 2017‑09 during the first quarter of 2018 and the adoption of this guidance did not have a material impact on the Company’s financial statements.

In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)”. The new standard establishes a right-of-use (“ROU”) model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. Lessees are required to use a modified retrospective transition approach for capital and operating leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. In July 2018, the FASB issued ASU 2018-10, “Codification Improvements to Topic 842, Leases,” to clarify how to apply certain aspects of the new lease standard. In July 2018, the FASB also issued ASU 2018-11, “Leases (Topic 842): Targeted Improvements”, to give entities other options for transition. The additional options for transition allow an entity to apply the new lease standard at the adoption date and recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption or apply a practical expedient. The new standards are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years.

The Company elected to adopt the practical expedient permitted by ASU 2018-11 during the first quarter of 2019. As a result of the adoption, on January 1, 2019, the Company recognized a lease liability of approximately $1.7 million, which represents the present value of the remaining minimum lease payments using an estimated incremental borrowing rate of 5.75%. The Company also derecognized the deferred rent balance, which included deferred tenant improvements, as of December 31, 2018 of approximately $540,000 and recognized an ROU asset of approximately $1.2 million. Lease expense did not change materially as a result of the adoption of ASU 2016-02.

In June 2018, the FASB issued ASU 2018‑07, “Compensation-Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting”. ASU 2018-07 expands the scope of Topic 718 to include share-based payment transactions used to acquire goods and services from nonemployees. Companies should apply the requirements of Topic 718 to nonemployee awards except for certain exemptions specified in the amendment. The guidance is effective for fiscal years beginning after December 15, 2018, including interim reporting periods within those fiscal years. Early adoption is permitted, but no earlier than the Company’s adoption date of ASU 2014‑09 “Revenue from Contracts with Customers (Topic 606)”. The Company adopted ASU 2018‑07 during the first quarter of 2019 and the adoption of this guidance did not have a material impact on the Company’s financial statements as all outstanding non-employee share-based awards have fully vested.

In July 2018, the FASB issued ASU 2018-09, “Codification Improvements”, which facilitates amendments to a variety of topics to clarify, correct errors in, or make minor improvements to the accounting standards codification. The effective date of the standard is dependent on the facts and circumstances of each amendment. Some amendments do not require transition guidance and will be effective upon the issuance of this standard. A majority of the amendments in ASU 2018-09 will be effective for fiscal years beginning after December 15, 2018. The Company adopted ASU 2018-09 during the first quarter of 2019 and the adoption of this guidance did not have a material impact on the Company’s financial statements.

Recent Accounting Pronouncements

In August 2018, the FASB issued ASU 2018‑13, “Fair Value Measurement - Disclosure Framework (Topic 820)”. The updated guidance improves the disclosure requirements on fair value measurements. The updated guidance is effective for fiscal years beginning after December 15, 2019, including interim reporting periods within those fiscal years. Early adoption is permitted for any removed or modified disclosures. The Company does not expect the adoption of this ASU will have a significant impact on its financial statements.

The Company does not discuss recent pronouncements that are not anticipated to have an impact on or are unrelated to its financial condition, results of operations, cash flows or disclosures.