Restrictions on Cash and Cash Equivalents Schedule (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Noninterest Bearing Accounts [Member]
Cash and Cash Equivalents [Line Items]
Uninsured Cash Accounts	$ 289	$ 315
Federal Reserve Bank of Boston [Member]
Cash and Cash Equivalents [Line Items]
Uninsured Cash Accounts	34,777	13,530
FHLB of Boston [Member]
Cash and Cash Equivalents [Line Items]
Uninsured Cash Accounts	$ 572	$ 253