Employee Benefit Plans	3 Months Ended
Mar. 31, 2019
Compensation And Retirement Disclosure [Abstract]
Employee Benefit Plans	13. EMPLOYEE BENEFIT PLANS The Company covers substantially all U.S. salaried employees with a defined contribution 401(k) plan. Each salaried employee of the Company who has attained the age of 21 is eligible to participate in the 401(k) plan on their first day of employment. Any employer contributions to the 401(k) plan are entirely at the discretion of the Company. The Company accrued expenses relating to employer matching contributions to the 401(k) plan for the three months ended March 31, 2019 and 2018, in the amounts of $683 and $595, respectively.

The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans.

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-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-URI http://asc.fasb.org/topic&trid=2235017

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