Financial Instruments With Off-Balance-Sheet Risk Contractual Amount of Financial Instruments with Credit Risk (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Concentration Risk [Line Items]
Contract or Notional Amount	$ 112,503	$ 107,589
Commitments to originate loans [Member]
Concentration Risk [Line Items]
Contract or Notional Amount	31,404	24,176
Unused lines of credit [Member]
Concentration Risk [Line Items]
Contract or Notional Amount	76,544	77,542
Standby and commercial letters of credit [Member]
Concentration Risk [Line Items]
Contract or Notional Amount	1,624	1,614
Credit card arrangement [Member]
Concentration Risk [Line Items]
Contract or Notional Amount	1,341	1,369
MPF credit enhancement obligation, net (See Note 18)
Concentration Risk [Line Items]
Contract or Notional Amount	610	572
Commitment to purchase investment in a real estate limited partnership [Member]
Concentration Risk [Line Items]
Contract or Notional Amount	980	980
Commitment to purchase investment securities [Member]
Concentration Risk [Line Items]
Contract or Notional Amount	$ 0	$ 1,336