Document and Entity Information	Total
Prospectus:
Document Type	497
Document Period End Date	Sep. 04, 2019
Registrant Name	BOSTON TRUST WALDEN FUNDS
Entity Central Index Key	0000882748
Entity Inv Company Type	N-1A
Amendment Flag	false
Document Creation Date	Sep. 04, 2019
Document Effective Date	Sep. 04, 2019
Prospectus Date	May 01, 2019
Boston Trust Asset Management Fund \| Boston Trust Asset Management Fund
Prospectus:
Trading Symbol	BTBFX
Boston Trust Equity Fund \| Boston Trust Equity Fund
Prospectus:
Trading Symbol	BTEFX
Boston Trust Midcap Fund \| Boston Trust Midcap Fund
Prospectus:
Trading Symbol	BTMFX
Boston Trust SMID Cap Fund \| Boston Trust SMID Cap Fund
Prospectus:
Trading Symbol	BTSMX
Boston Trust Small Cap Fund \| Boston Trust Small Cap Fund
Prospectus:
Trading Symbol	BOSOX
Walden Balanced Fund \| Walden Balanced Fund
Prospectus:
Trading Symbol	WSBFX
Walden Equity Fund \| Walden Equity Fund
Prospectus:
Trading Symbol	WSEFX
Walden Midcap Fund \| Walden Midcap Fund
Prospectus:
Trading Symbol	WAMFX
Walden SMID Cap Fund \| Walden SMID Cap Fund
Prospectus:
Trading Symbol	WASMX
Walden Small Cap Fund \| Walden Small Cap Fund
Prospectus:
Trading Symbol	WASOX
Walden International Equity Fund \| Walden International Equity Fund
Prospectus:
Trading Symbol	WIEFX

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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