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Regulatory Matters (Details Textual)	12 Months Ended
	Dec. 31, 2017
Regulatory Matters (Textual)
Capital conservation buffer percentage	1.25%
2015 [Member]
Regulatory Matters (Textual)
Capital conservation buffer percentage	0.00%
2019 [Member]
Regulatory Matters (Textual)
Capital conservation buffer percentage	2.50%

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