Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Summary of Significant Accounting Policies and Estimates (Details)

v3.19.1
Basis of Presentation and Summary of Significant Accounting Policies and Estimates (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Jan. 01, 2019
Concentration Risk [Line Items]        
Right-of-use assets $ 1,365   $ 0  
Leas liabilities $ 1,412      
Customer Concentration Risk | Accounts Receivable        
Concentration Risk [Line Items]        
Concentration risk percentage     19.00%  
Customer Concentration Risk | Revenue        
Concentration Risk [Line Items]        
Concentration risk percentage 11.00% 11.00%    
ASU 2016-02        
Concentration Risk [Line Items]        
Right-of-use assets       $ 1,498
Leas liabilities       $ 1,454