Derivatives Two-way client interest rate swaps not designated as either fair value or cash flow hedges (Details)	12 Months Ended
	Dec. 31, 2015 USD ($) position	Dec. 31, 2014 USD ($) position
Derivative [Line Items]
Notional Amount	$ 10,932,000	$ 11,498,000
Asset	73,000	50,000
Liability	$ 73,000	$ 50,000
Life (Years)
Interest Rate Swap One [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Number of positions | position	1	1
Notional Amount	$ 3,760,000	$ 4,002,000
Asset	0	0
Liability	$ 21,000	$ 19,000
Pay Rate	3.90%	3.90%
Life (Years)	11 years 10 months 24 days	12 years 10 months 24 days
Interest Rate Swap One [Member] | Pay floating - Receive fixed interest rate swap
Derivative [Line Items]
Number of positions | position	1	1
Notional Amount	$ 3,760,000	$ 4,002,000
Asset	21,000	19,000
Liability	$ 0	$ 0
Pay Rate	3.90%	3.90%
Life (Years)	11 years 10 months 24 days	12 years 10 months 24 days
Interest Rate Swap Two [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Number of positions | position	1	1
Notional Amount	$ 1,706,000	$ 1,747,000
Asset	0	0
Liability	$ 52,000	$ 31,000
Pay Rate	4.09%	4.09%
Life (Years)	8 years 10 months 24 days	9 years 10 months 24 days
Interest Rate Swap Two [Member] | Pay floating - Receive fixed interest rate swap
Derivative [Line Items]
Number of positions | position	1	1
Notional Amount	$ 1,706,000	$ 1,747,000
Asset	$ 52,000	31,000
Liability		$ 0
Pay Rate	4.09%	4.09%
Life (Years)	8 years 10 months 24 days	9 years 10 months 24 days
Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Number of positions | position	0	0
London Interbank Offered Rate (LIBOR) [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Spread on variable rate		2.00%
London Interbank Offered Rate (LIBOR) [Member] | Pay floating - Receive fixed interest rate swap
Derivative [Line Items]
Spread on variable rate		2.00%
London Interbank Offered Rate (LIBOR) [Member] | Interest Rate Swap One [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Spread on variable rate	2.00%
London Interbank Offered Rate (LIBOR) [Member] | Interest Rate Swap One [Member] | Pay floating - Receive fixed interest rate swap
Derivative [Line Items]
Spread on variable rate	2.00%
London Interbank Offered Rate (LIBOR) [Member] | Interest Rate Swap Two [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Spread on variable rate	1.80%	1.80%
London Interbank Offered Rate (LIBOR) [Member] | Interest Rate Swap Two [Member] | Pay floating - Receive fixed interest rate swap
Derivative [Line Items]
Spread on variable rate	1.80%	1.80%