| Date | Form | Description | XBRL | |
|---|---|---|---|---|
| 04/06/18 | DEF 14A | Definitive proxy statements | 
       
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| 03/29/18 | 8-K | Current report filing | 
       
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| 03/27/18 | 8-K | Current report filing | 
       
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| 03/23/18 | 8-K | Current report filing | 
       
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| 03/22/18 | S-3ASR | Automatic shelf registration statement of securities of well-known seasoned issuers | 
       
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| 03/19/18 | 8-K | Current report filing | 
       
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| 03/12/18 | 4 | Statement of changes in beneficial ownership of securities | 
       
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| 03/12/18 | SC 13G/A | Schedule filed to report acquisition of beneficial ownership of 5% or more of a class of equity securities by passive investors and certain institutions | 
       
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| 03/09/18 | 4/A | Statement of changes in beneficial ownership of securities | 
       
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| 03/08/18 | 4 | Statement of changes in beneficial ownership of securities | 
       
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