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Fair Value Measurements - Summary of Assets and Liabilities Carried at Book Value (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Book value $ 319,521 $ 272,751
Senior Notes due 2024    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Book value [1] 227,062 226,885
Revolving Credit Facility    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Book value [2] 50,000 0
Portion at Other than Fair Value Measurement | Senior Notes due 2024    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value of long-term debt 202,433 228,585
Portion at Other than Fair Value Measurement | Senior Notes due 2024 | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value of long-term debt 0 0
Portion at Other than Fair Value Measurement | Senior Notes due 2024 | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value of long-term debt 202,433 228,585
Portion at Other than Fair Value Measurement | Senior Notes due 2024 | Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value of long-term debt 0 0
Portion at Other than Fair Value Measurement | Revolving Credit Facility    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value of long-term debt 50,000 0
Portion at Other than Fair Value Measurement | Revolving Credit Facility | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value of long-term debt 0 0
Portion at Other than Fair Value Measurement | Revolving Credit Facility | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value of long-term debt 50,000 0
Portion at Other than Fair Value Measurement | Revolving Credit Facility | Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value of long-term debt 0 0
Senior Notes due 2024    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Net unamortized debt issuance costs $ 2,900 3,100
Revolving Credit Facility    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Stated interest rate 3.40%  
Net unamortized debt issuance costs $ 2,100 $ 2,300
[1] Net of unamortized debt issuance costs of $2.9 million and $3.1 million at March 31, 2020 and December 31, 2019, respectively.
[2] Unamortized debt issuance costs of $2.1 million and $2.3 million at March 31, 2020 and December 31, 2019, respectively, included in Other Non-Current Assets.