Note 17 - Regulatory Matters (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		6 Months Ended
	Feb. 03, 2016	Jun. 30, 2016	Jan. 01, 2019	Apr. 20, 2016	Dec. 31, 2015
Scenario, Forecast [Member]
Common Equity to Risk Weighted Assets			7.00%
Tier One Risk Based Capital to Risk Weighted Assets			8.50%
Capital to Risk Weighted Assets			10.50%
ASBD [Member] | Bear State Bank [Member]
Restricted Cash and Cash Equivalents		$ 12,200
FRB [Member] | Bear State Bank [Member]
Cash Reserved for Dividends		$ 7,500
Bear State Bank [Member]
Common Equity to Risk Weighted Assets		12.07%			12.19%
Tier One Risk Based Capital to Risk Weighted Assets		12.07%			12.19%
Capital to Risk Weighted Assets		12.98%			13.32%
Tier One Leverage Capital to Average Assets		10.42%			10.58%
2015 Share Repurchase Program [Member]
Treasury Stock, Shares, Acquired		5,114
Stock Repurchase Program, Authorized Amount				$ 2,000
Capital Conservation Buffer		2.50%
Capital Conservation Buffer, Annual Phase-in		0.625%
Common Equity to Risk Weighted Assets					4.50%
Tier One Risk Based Capital to Risk Weighted Assets					6.00%
Capital to Risk Weighted Assets					8.00%
Tier One Leverage Capital to Average Assets		4.00%
Treasury Stock, Shares, Acquired	448,068
Treasury Stock Acquired, Average Cost Per Share	$ 8.05
Treasury Stock, Value, Acquired, Cost Method	$ 3,600	$ 3,672