| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 05/29/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 
                                            
                             | 
                                    1 | |
| 05/29/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 
                                            
                             | 
                                    1 | |
| 05/29/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 
                                            
                             | 
                                    1 | |
| 05/21/18 | 8-K | Form 8-K: Current report filing | 
                                            
                             | 
                                    3 | |
| 05/11/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 
                                            
                             | 
                                    1 | |
| 05/11/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 
                                            
                             | 
                                    1 | |
| 05/11/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 
                                            
                             | 
                                    1 | |
| 05/11/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 
                                            
                             | 
                                    1 | |
| 05/10/18 | 3 | Form 3: Initial statement of beneficial ownership of securities | 
                                            
                             | 
                                    1 | |
| 05/09/18 | S-8 | Form S-8: Initial registration statement for securities to be offered to employees pursuant to employee benefit plans | 
                                            
                             | 
                                    6 | 
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