Fair Value Measurements (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Warrant, Face Value	$ 152
Century 10% Warrant
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Warrant, Face Value		$ 152
Term Loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Term Loan, Face Value	8,250	8,500
Carrying Amount | Century 10% Warrant
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Warrant, Fair value and Carrying Amount	131	89
Carrying Amount | Term Loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Term Loan, Fair Value and Carrying Amount	7,488	7,649
Level 3 | Fair Value | Century 10% Warrant
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Warrant, Fair value and Carrying Amount	131	89
Level 3 | Fair Value | Term Loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Term Loan, Fair Value and Carrying Amount	$ 5,805	$ 6,013