Note 9 - Business Combination - Consideration Paid and Assets Acquired and Liabilities Assumed (Details) - USD ($)	Jul. 28, 2016	Sep. 30, 2016	Dec. 31, 2015
Oak Mortgage [Member]
Consideration paid:
Cash	$ 7,136,000
Equity instruments	202,000
Deferred additional purchase price	500,000
Value of consideration	7,838,000
Assets acquired:
Cash and cash equivalents	1,223,000
Loans held for sale	20,871,000
Loans receivable	1,132,000
Premises and equipment	103,000
Derivative assets	1,508,000
Intangible assets – non complete agreements	104,000
Other assets	125,000
Total assets	25,066,000
Liabilities assumed:
Warehouse lines of credit	19,666,000
Derivative liabilities	412,000
Other liabilities	2,042,000
Total liabilities	22,120,000
Net assets acquired	2,946,000
Goodwill resulting from acquisition of Oak Mortgage	$ 4,892,000
Goodwill resulting from acquisition of Oak Mortgage		$ 4,892,000