Other Comprehensive Income (Loss) - Reclassification of Available-for-Sale Securities to Held-to-Maturity Securities (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Reclassification of Available-for-Sale Securities to Held-to-maturity Roll Forward [Roll Forward]
Balance at beginning of period	$ (84)	$ 0	$ (48)	$ 0
Net unrealized losses transferred during the period	0	(23)	0	(23)
Amortization of net unrealized losses	(51)	(19)	(78)	(19)
Related deferred taxes	36	14	27	14
Net change	(15)	(28)	(51)	(28)
Balance at end of period	$ (99)	$ (28)	$ (99)	$ (28)

Other Comprehensive Income (Loss), Accumulated Unrealized Gain (Loss) on Transfer of Available-for-sale Securities to Held-to-maturity

No definition available.

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Other Comprehensive Income (Loss), Amortization of Net Unrealized Losses on Transfers of Available-for-Sale securities to Held-to-Maturity

No definition available.

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Other Comprehensive Income (Loss), Transfers from Available-for-Sale Securities to Held-to-Maturity, Tax

No definition available.

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Other Comprehensive Income (Loss), Transfers from Available-for-Sale Securities to Held-to-maturity, Net of Tax

No definition available.

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Other Comprehensive Income (Loss), Transfers from Available-for-Sale Securities to Held-to-maturity, before Tax

No definition available.

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Reclassification of Available-for-Sale Securities to Held-to-maturity Roll Forward [Roll Forward]

No definition available.

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