Annual report pursuant to Section 13 and 15(d)

Fair Value of Financial Assets and Liabilities - Summary of Long-term Debt Carried at Amortized Cost on Consolidated Balance Sheet (Details)

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Fair Value of Financial Assets and Liabilities - Summary of Long-term Debt Carried at Amortized Cost on Consolidated Balance Sheet (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Book Value    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Current portion of long-term debt $ 5,800 $ 1,019
Long-term debt, less current portion 7,625 13,079
Total 13,425 14,098
Approximate Fair Value    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Current portion of long-term debt 5,800 1,019
Long-term debt, less current portion 7,213 13,035
Total 13,013 14,054
Level 2 | Approximate Fair Value    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Current portion of long-term debt 5,800 1,019
Long-term debt, less current portion 7,213 13,035
Total $ 13,013 $ 14,054