Acquisition - Schedule of Preliminary Purchase Price of Assets Acquired and Liabilities Assumed (Detail) (USD $)	Jun. 30, 2014	Apr. 03, 2014	Dec. 31, 2013
ASSETS
Cash and due from banks		$ 15,161,000
Total loans		124,081,000
Premises and equipment, net		2,548,000
FRB and FHLB stock		2,136,000
Goodwill	28,034,000	8,286,000	19,748,000
Core deposit intangible		822,000
Interest receivable		347,000
Cash value life insurance		2,185,000
Other assets		3,019,000
Total assets purchased		158,585,000
Common shares issued		12,689,000
Cash paid	1,029,000	6,207,000
Retirement of Holding Company Debt	6,207,000	1,029,000
Total estimated purchase price		19,925,000
Deposits
Non-interest bearing		27,274,000
NOW accounts		16,332,000
Savings and money market		35,045,000
Certificates of deposits		42,368,000
Total deposits		121,019,000
Borrowings		16,990,000
Interest payable		52,000
Other liabilities		599,000
Total liabilities assumed		138,660,000
Commercial [Member]
ASSETS
Total loans		70,441,000
Residential mortgage [Member]
ASSETS
Total loans		43,448,000
Consumer [Member]
ASSETS
Total loans		$ 10,192,000