Note 19 - Shareholders' Equity - Unvested Restricted Shares (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Granted (in shares)	65,736
Restricted stock awards weighted average grant date fair value per share (in dollars per share)	$ 5.74
Granted aggregate intrinsic value	$ 254,816
Granted remaining contractual term (Year)	1 year 25 days
Forfeited (in shares)	(3,084)
Forfeited weighted average grant price (in dollars per share)	$ 5.75
Forfeited aggregate intrinsic value
Restricted Stock [Member]
Unvested restricted shares outstanding (in shares)	42,676	3,000
Unvested restricted shares weighted average grant price (in dollars per share)	$ 5.95	$ 5.81
Unvested restricted shares aggregate intrinsic value	$ 638,210	$ 285,076	$ 17,880
Unvested restricted shares remaining contractual term (Year)	1 year 138 days	2 years 178 days	2 years 339 days
Granted (in shares)		53,831
Restricted stock awards weighted average grant date fair value per share (in dollars per share)	$ 5.74	$ 5.90
Granted aggregate intrinsic value		$ 242,125
Granted remaining contractual term (Year)		2 years 91 days
Vested (in shares)	(38,148)	(14,155)
Vested weighted average grant price (in dollars per share)	$ 5.79	$ 5.84
Vested aggregate intrinsic value	$ 229,198	$ 81,182
Vested remaining contractual term (Year)	1 year	1 year 164 days
Unvested restricted shares outstanding (in shares)	67,180	42,676	3,000
Unvested restricted shares weighted average grant price (in dollars per share)	$ 5.84	$ 5.95	$ 5.81