XML 28 R21.htm IDEA: XBRL DOCUMENT  v2.3.0.11
Document And Entity Information (USD $)
6 Months Ended
Jun. 30, 2011
Entity Registrant Name Washington Trust Bancorp Inc,
Entity Central Index Key 0000737468
Current Fiscal Year End Date --12-31
Entity Well-known Seasoned Issuer No
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Filer Category Accelerated Filer
Entity Public Float $ 9,170,367
Entity Common Stock, Shares Outstanding 16,279,449
Document Fiscal Year Focus 2011
Document Fiscal Period Focus Q2
Document Type 10-Q
Amendment Flag false
Document Period End Date Jun. 30, 2011