Note 5 - Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2019

	T hree Months Ended March 31, 201 9
	Number of Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life		Aggregate Intrinsic Value
Outstanding at beginning of period		157,908		$	24.82
Granted		95,250			5.89
Exercised		—			—
Canceled and Forfeited		(5,300	)		8.93
Expired		(350	)		11.00
Outstanding at end of period (in years)		247,508		$	17.90		7.7	$	—
Exercisable at end of period (in years)		84,175		$	34.35		4.8	$	—

	Three Months Ended March 31, 201 9
	Number of Shares			Weighted Average Grant-Date Fair Value
Unvested at beginning of period		5,000		$	7.42
Granted		15,000			2.75
Vested		(5,000	)		7.42
Forfeited		—			—
Unvested at end of period		15,000		$	2.75