Note 9 - Business Combination - Consideration Paid and Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Jul. 28, 2016	Mar. 31, 2017	Dec. 31, 2016
Liabilities assumed:
Goodwill resulting from acquisition of Oak Mortgage		$ 5,011	$ 5,011
Oak Mortgage [Member]
Cash	$ 7,136
Equity instruments	202
Deferred additional purchase price	500
Value of consideration	7,838
Assets acquired:
Cash and cash equivalents	1,223
Loans held for sale	20,871
Loans receivable	1,132
Premises and equipment	103
Derivative assets	1,508
Intangible assets – non compete agreements	104
Other assets	125
Total assets	25,066
Liabilities assumed:
Warehouse lines of credit	19,666
Derivative liabilities	412
Other liabilities	2,161
Total liabilities	22,239
Net assets acquired	2,827
Goodwill resulting from acquisition of Oak Mortgage	5,011
Oak Mortgage [Member] | Changes Measurement [Member]
Cash
Equity instruments
Deferred additional purchase price
Value of consideration
Assets acquired:
Cash and cash equivalents
Loans held for sale
Loans receivable
Premises and equipment
Derivative assets
Intangible assets – non compete agreements
Other assets
Total assets
Liabilities assumed:
Warehouse lines of credit
Derivative liabilities
Other liabilities	119
Total liabilities	119
Net assets acquired	(119)
Goodwill resulting from acquisition of Oak Mortgage	119
Oak Mortgage [Member] | Original Estimate [Member]
Cash	7,136
Equity instruments	202
Deferred additional purchase price	500
Value of consideration	7,838
Assets acquired:
Cash and cash equivalents	1,223
Loans held for sale	20,871
Loans receivable	1,132
Premises and equipment	103
Derivative assets	1,508
Intangible assets – non compete agreements	104
Other assets	125
Total assets	25,066
Liabilities assumed:
Warehouse lines of credit	19,666
Derivative liabilities	412
Other liabilities	2,042
Total liabilities	22,120
Net assets acquired	2,946
Goodwill resulting from acquisition of Oak Mortgage	$ 4,892