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Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	$ 2,579	$ (1,767)	$ 2,522	$ (6,591)
Unrealized gains (losses) arising during the period	(2,448)	5,101	(965)	12,558
Reclassification of realized gains during the period	0	(4)	(1,395)	(40)
Related deferred taxes	857	(1,784)	826	(4,381)
Net change	(1,591)	3,313	(1,534)	8,137
Balance at end of period	$ 988	$ 1,546	$ 988	$ 1,546

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Accumulated Other Comprehensive Income (Loss) [Roll Forward]

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Accumulated appreciation or loss, net of tax, in value of the total of available-for-sale securities at the end of an accounting period.

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Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount of tax expense (benefit), after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount after tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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Amount before tax and reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities.

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