Goodwill and Core Deposit Intangibles (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2014	Dec. 31, 2013
Goodwill
Beginning of period	$ 15,672	$ 15,672	$ 15,672	$ 15,672
End of the period	15,672			15,672
Core Deposit Intangibles RollForward
Beginning of period	984	1,230	984	1,230
Less amortization	(184)	(184)	(184)	(246)
End of period	800			984
Expected future amortization expense
Finite-Lived Intangible Assets, Net, Total	800			984
Core Deposits [Member]
Core Deposit Intangibles RollForward
End of period	800
Expected future amortization expense
2014	62
2015	246
2016	246
2017	218
2018	28
Finite-Lived Intangible Assets, Net, Total	$ 800
Core Deposits [Member] | Minimum [Member]
Core Deposit Intangibles RollForward
Finite-Lived Intangible Asset, Useful Life	6 years
Core Deposits [Member] | Maximum [Member]
Core Deposit Intangibles RollForward
Finite-Lived Intangible Asset, Useful Life	8 years