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Credit Facilities	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Credit Facilities	9. Credit Facilities Below is a description of the Company’s former and existing revolving credit facilities and other financing arrangements. Former Revolving Credit Agreement On March 28, 2014, the Company entered into a $72.5 million revolving credit and security agreement (the “Credit Agreement”) with PNC Bank National Association as administrative agent and collateral agent. The revolving credit facility under the Credit Agreement had a maturity date of March 28, 2019. On November 9, 2016, the former revolving credit facility was paid and terminated using a portion of the proceeds from the IPO. For the years ended December 31, 2017 and 2016, $0 and $139, respectively, of interest expense were capitalized into property, plant and equipment in the consolidated balance sheets. Existing Revolving Credit Facility On December 8, 2016, the Company entered into a $45 million three-year senior secured revolving credit facility (the “Facility”) with Jefferies Finance LLC as administrative and collateral agent (the “New Credit Agreement”). Substantially all of the assets of the Company are pledged as collateral under the Facility. The Facility expires on December 8, 2019. The Facility contains various reporting requirements, negative covenants, restrictive provisions and requires maintenance of financial covenants, including a fixed charge coverage ratio and a leverage ratio (each as defined in the New Credit Agreement). As of December 31, 2017, no amounts were outstanding under the Facility and the Company was in compliance with all covenants.

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- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-URI http://asc.fasb.org/topic&trid=2208564

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