Container to support the formal attachment of each official or unofficial, public or private document as part of a submission package.
The type of document being provided (such as 10-K, 10-Q, N-1A, etc). The document type should have the same value as the supporting SEC submission type
If the value is true, then the document as an amendment to previously-filed/accepted document.
The end date of the period covered in the document, in CCYY-MM-YY format.