Quarterly report pursuant to Section 13 or 15(d)

Commitments And Contingencies (Narrative I) (Details)

v3.19.1
Commitments And Contingencies (Narrative I) (Details)
$ in Millions
3 Months Ended 12 Months Ended
Feb. 28, 2018
plaintiff
Mar. 31, 2019
Dec. 31, 2015
Jan. 07, 2019
USD ($)
Commitments And Contingencies [Line Items]        
Average annual default rates   8.20% 6.90%  
Percent of total delinquencies subject to letters   15.80%    
Number of opt-in plaintiffs | plaintiff 660      
Minimum [Member]        
Commitments And Contingencies [Line Items]        
Range of reasonably possible losses | $       $ 0.5