Related Party Transactions (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Related Party Transactions [Abstract]
Related party indebtedness	$ 14,200,000	$ 26,100,000
New loans and advances on existing loans	26,900,000	41,200,000
Related party loan repayments	38,900,000	24,200,000
Related party deposits	1,800,000	2,100,000
Related party savings and interest-bearing transaction accounts	13,200,000	14,000,000
Related party time certificates of deposit	$ 0	$ 500,000