Note 9 - Short-Term Borrowings (Details) - Schedule of Short-Term Borrowings - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016
Short-term Borrowings [Line Items]
Balance		$ 55,756	$ 52,660
Securities Sold under Agreements to Repurchase [Member]
Short-term Borrowings [Line Items]
Balance	[1]	41,845	45,339
Maximum indebtedness at any month end	[1]	43,834	45,339
Daily average indebtedness outstanding	[1]	$ 39,301	$ 38,835
Average rate paid for the year	[1]	0.38%	0.37%
Average rate on period-end borrowings	[1]	0.40%	0.38%
Other Short Term Debt [Member]
Short-term Borrowings [Line Items]
Balance	[2]	$ 13,911	$ 7,321
Maximum indebtedness at any month end	[2]	33,773	7,321
Daily average indebtedness outstanding	[2]	$ 9,371	$ 1,365
Average rate paid for the year	[2]	1.09%	0.66%
Average rate on period-end borrowings	[2]	1.20%	0.77%

[1] Securities sold under agreements to repurchase mature overnight. The repurchase agreements were collateralized by U.S. Government mortgage-backed securities and CMOs with an amortized cost of $53,112,000 and $52,920,000 and a fair value of $51,823,000 and $52,314,000 and at December 31, 2017 and 2016, respectively. These securities are held in safekeeping at the Federal Reserve Bank of Philadelphia.

[2] Other short-term borrowings include Federal funds purchased and overnight borrowings from the FHLB.