| 
                                    
                                        10 Sep
                                        2019
 | 8-K | 
                                     
                                        Report of unscheduled material events or corporate event
                                     | 
                                    Current Reports
                                 |  | 
                        
                            | 
                                    
                                        05 Sep
                                        2019
 | T-3/A | 
                                     
                                        Amendment to a previously filed T-3
                                     | 
                                    Other
                                 |  | 
                        
                            | 
                                    
                                        05 Sep
                                        2019
 | T-3/A | 
                                     
                                        Amendment to a previously filed T-3
                                     | 
                                    Other
                                 |  | 
                        
                            | 
                                    
                                        26 Aug
                                        2019
 | 8-K | 
                                     
                                        Report of unscheduled material events or corporate event
                                     | 
                                    Current Reports
                                 |  | 
                        
                            | 
                                    
                                        20 Aug
                                        2019
 | 8-K | 
                                     
                                        Report of unscheduled material events or corporate event
                                     | 
                                    Current Reports
                                 |  | 
                        
                            | 
                                    
                                        05 Aug
                                        2019
 | 10-Q | 
                                     
                                        Quarterly report which provides a continuing view of a company's financial position
                                     | 
                                    Quarterly Filings
                                 |  | 
                        
                            | 
                                    
                                        08 Jul
                                        2019
 | SC 13G | 
                                     
                                        A statement of beneficial ownership of common stock by certain persons
                                     | 
                                    3,4,5
                                 |  | 
                        
                            | 
                                    
                                        05 Jul
                                        2019
 | 8-K | 
                                     
                                        Report of unscheduled material events or corporate event
                                     | 
                                    Current Reports
                                 |  | 
                        
                            | 
                                    
                                        03 Jul
                                        2019
 | T-3/A | 
                                     
                                        Amendment to a previously filed T-3
                                     | 
                                    Other
                                 |  | 
                        
                            | 
                                    
                                        02 Jul
                                        2019
 | T-3/A | 
                                     
                                        Amendment to a previously filed T-3
                                     | 
                                    Other
                                 |  |