8. Troubled Debt Restructuring (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016 USD ($) Integer	Sep. 30, 2015 USD ($) Integer	Sep. 30, 2016 USD ($) Integer	Sep. 30, 2015 USD ($) Integer
Number of Contracts | Integer	1	7	7	15
Pre-Modification Outstanding Recorded Investment	$ 6	$ 3,238	$ 175	$ 6,008
Post-Modification Outstanding Recorded Investment	$ 6	$ 3,238	$ 175	$ 6,008
Number of Contracts, Non Accrual | Integer			6
Pre-Modification Outstanding Recorded Investment, Non Accrual			$ 2,068
Post-Modification Outstanding Recorded Investment, Non Accrual			$ 2,068
Consumer [Member]
Number of Contracts | Integer	1		4	4
Pre-Modification Outstanding Recorded Investment	$ 6		$ 33	$ 40
Post-Modification Outstanding Recorded Investment	$ 6		$ 33	$ 40
Number of Contracts, Non Accrual | Integer			1
Pre-Modification Outstanding Recorded Investment, Non Accrual			$ 15
Post-Modification Outstanding Recorded Investment, Non Accrual			$ 15
Commercial Loan [Member]
Number of Contracts | Integer		1		1
Pre-Modification Outstanding Recorded Investment		$ 978		$ 978
Post-Modification Outstanding Recorded Investment		$ 978		$ 978
Real Estate [Member]
Number of Contracts | Integer		1	2	5
Pre-Modification Outstanding Recorded Investment		$ 612	$ 142	$ 3,342
Post-Modification Outstanding Recorded Investment		$ 612	$ 142	$ 3,342
Home Equity [Member]
Number of Contracts | Integer		5		5
Pre-Modification Outstanding Recorded Investment		$ 1,648		$ 1,648
Post-Modification Outstanding Recorded Investment		$ 1,648		$ 1,648