Fair Value Measurements Financial and non-financial assets measured at fair value on a nonrecurring basis (Details) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Repossessed assets	[1]	$ 1,044	$ 1,132
Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans		7,808	5,799
Other real estate owned		3,402	4,051
Nonrecurring [Member] | Level I [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans		0	0
Other real estate owned		0	0
Repossessed assets	[1]	0	0
Nonrecurring [Member] | Level II [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans		3,156	1,289
Other real estate owned		3,402	4,051
Repossessed assets	[1]	0	0
Nonrecurring [Member] | Level III [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans		4,652	4,510
Other real estate owned		0	0
Repossessed assets	[1]	$ 1,044	$ 1,132

[1] Included in other assets on the consolidated balance sheets.