Disclosures About Fair Value of Financial Instruments - Nonrecurring Basis (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Assets Measured on a Nonrecurring Basis:
Impaired loans	$ 9,292		$ 7,101
Other real estate owned	4,863		4,863
Level 3 [Member]
Assets Measured on a Nonrecurring Basis:
Other real estate owned	4,863		4,863
Nonrecurring [Member]
Assets Measured on a Nonrecurring Basis:
Impaired loans	2,467	7,769
Impaired loans, adjustment	323	71
Nonrecurring [Member] | Level 3 [Member]
Assets Measured on a Nonrecurring Basis:
Impaired loans	$ 2,467	$ 7,769