Fair Value Measurements, Recurring and Nonrecurring (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset transfers from Level 1 to Level 2	$ 0	$ 0	$ 0	$ 0
Asset transfers from Level 2 into Level 3	0	$ 0	0	$ 0
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Municipal bonds	3,501		3,501		$ 2,096
Agency mortgage-backed securities	3,140		3,140		4,172
Non-agency mortgage-backed securities	355		355		428
Mortgage servicing rights	3,039		3,039		3,249
Liabilities carried at fair value	0		0		0
Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Municipal bonds	0		0		0
Agency mortgage-backed securities	0		0		0
Non-agency mortgage-backed securities	0		0		0
Mortgage servicing rights	0		0		0
Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Municipal bonds	3,501		3,501		2,096
Agency mortgage-backed securities	3,140		3,140		4,172
Non-agency mortgage-backed securities	0		0		0
Mortgage servicing rights	0		0		0
Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Municipal bonds	0		0		0
Agency mortgage-backed securities	0		0		0
Non-agency mortgage-backed securities	355		355		428
Mortgage servicing rights	3,039		3,039		3,249
Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
OREO and repossessed assets	884		884		769
Impaired loans	11,145		11,145		9,220
Liabilities carried at fair value	0		0		0
Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
OREO and repossessed assets	0		0		0
Impaired loans	0		0		0
Nonrecurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
OREO and repossessed assets	0		0		0
Impaired loans	0		0		0
Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
OREO and repossessed assets	884		884		769
Impaired loans	$ 11,145		$ 11,145		$ 9,220