Securities - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended				9 Months Ended	8 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Ohio Linked Deposit Program [Member]	Dec. 31, 2013 Ohio Linked Deposit Program [Member]	Sep. 30, 2014 US Treasury Securities [Member]	Dec. 31, 2013 US Treasury Securities [Member] Minimum [Member]	Dec. 31, 2013 US Treasury Securities [Member] Maximum [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities pledged for investment in Ohio Linked Deposit Program					$ 398,000	$ 382,000
Term of treasury security			6 years 3 months 18 days				10 years
Treasury security yield			2.52%					1.70%	3.04%
Proceeds from sale of equity securities available for sale	470,000	0
Gross gains on sales of securities available for sale	328,000	0	362,000	2,600,000
Proceeds from sale of equity and other securities available for sale			$ 5,470,000	$ 97,127,000