XML 50 R40.htm IDEA: XBRL DOCUMENT v3.19.2
Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)
$ in Thousands
Jan. 01, 2019
Jun. 30, 2019
Dec. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [Line Items]      
Right-of-use assets   $ 5,983 $ 0
Lease liabilities   6,225  
Estimate of Fair Value, Fair Value Disclosure [Member] | Less unamortized deferred financing fees [Member]      
Organization Consolidation And Presentation Of Financial Statements [Line Items]      
Notes payable, fair value disclosure   78,900 $ 76,800
ASU 2016-02 [Member]      
Organization Consolidation And Presentation Of Financial Statements [Line Items]      
Right-of-use assets $ 5,900 $ 5,983  
Lease liabilities 6,200    
Cumulative-effect transition adjustment to opening retained earnings (deficit) $ 900