Esop - Additional Information (Detail) - USD ($)	1 Months Ended	6 Months Ended
	Jan. 31, 2016	Jun. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
ESOP shares		600,000
ESOP common stock, per share		$ 13.14
ESOP borrowed		$ 7,900,000
ESOP payment amount	$ 780,000
ESOP term of loan	11 years
Accrued ESOP contribution liability		$ 336,000