| 
                                    
                                        23 Jun
                                        2015
 | 11-K | 
                                     
                                        An annual report of employee stock purchase, savings and similar plans
                                     | 
                                    Annual Filings
                                 |  | 
                        
                            | 
                                    
                                        23 Jun
                                        2015
 | 4 | 
                                     
                                        Statement of changes in beneficial ownership of securities
                                     | 
                                    3,4,5
                                 |  | 
                        
                            | 
                                    
                                        23 Jun
                                        2015
 | 4 | 
                                     
                                        Statement of changes in beneficial ownership of securities
                                     | 
                                    3,4,5
                                 |  | 
                        
                            | 
                                    
                                        23 Jun
                                        2015
 | 4 | 
                                     
                                        Statement of changes in beneficial ownership of securities
                                     | 
                                    3,4,5
                                 |  | 
                        
                            | 
                                    
                                        17 Jun
                                        2015
 | S-8 | 
                                     
                                        Securities offered to employees pursuant to employee benefit plans
                                     | 
                                    Registration Statements
                                 |  | 
                        
                            | 
                                    
                                        16 Jun
                                        2015
 | 8-K | 
                                     
                                        Report of unscheduled material events or corporate event
                                     | 
                                    Current Reports
                                 |  | 
                        
                            | 
                                    
                                        10 Jun
                                        2015
 | SC 13G/A | 
                                     
                                        An amendment to the SC 13G filing
                                     | 
                                    3,4,5
                                 |  | 
                        
                            | 
                                    
                                        01 Jun
                                        2015
 | SD | 
                                     
                                        Specialized Disclosure Report
                                     | 
                                    Other
                                 |  | 
                        
                            | 
                                    
                                        27 May
                                        2015
 | 4 | 
                                     
                                        Statement of changes in beneficial ownership of securities
                                     | 
                                    3,4,5
                                 |  | 
                        
                            | 
                                    
                                        08 May
                                        2015
 | 4 | 
                                     
                                        Statement of changes in beneficial ownership of securities
                                     | 
                                    3,4,5
                                 |  |