Note 9 - Goodwill and Intangible Assets (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Dec. 31, 2013
Finite-lived Intangible Assets, Fair Value Disclosure	$ 2,800,000	$ 2,700,000
Loans Serviced for Others Outstanding Principal Balance	365,000,000	$ 372,200,000
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	0
Core Deposits [Member]
Finite-Lived Intangible Assets, Net	1,400,000
Indiana Bank [Member] | Commercial Banking [Member]
Goodwill	$ 682,000
THE BANCorp [Member] | Core Deposits [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			$ 2,500,000