Mergers and Acquisitions - Estimated Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Apr. 30, 2016
Assets acquired:
Goodwill	$ 10,288	$ 10,288
United American Savings Bank
Assets acquired:
Cash and cash equivalents			$ 9,899
Securities available for sale			60
Loans receivable			66,145
Federal bank stocks			978
Accrued interest receivable			187
Premises and equipment			1,169
Goodwill			6,624
Core deposit intangible			232
Prepaid expenses and other assets			989
Total assets acquired			86,283
Liabilities assumed:
Deposits			72,700
Accrued interest payable			29
Accrued expenses and other liabilities			346
Total liabilities assumed			73,075
Consideration paid			$ 13,208