Note 4 - Stockholders' Equity (Q1) (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2021

Dec. 31, 2020

Stockholders' Equity [Abstract]

Stock Option Activity

	Total Stock Options Outstanding			Weighted Average Exercise Price per Share
December 31, 2020		76,064		$	27.35
Granted		—			—
Vested		—			—
Forfeited, Canceled		(8,163	)		143.62
March 31, 2021		67,901		$	13.37

	Year ended December 31, 2020
	Total Stock Options Outstanding			Weighted Average Exercise Price per Share		Nonvested Stock Options		Weighted Average Grant Date Fair Value per Share
December 31, 2019		136,105		$	40.07		—	$	—
Forfeited, Canceled		(60,041	)		56.19		—		—
December 31, 2020		76,064		$	27.35		—	$	—

Vested Stock Options

	As of March 31, 2021
	Stock Options Outstanding		Vested Stock Options
Quantity		67,901		67,901
Weighted Average Exercise Price	$	13.37	$	13.37
Weighted Average Remaining Contractual Term (in Years)		3.36		3.36
Intrinsic Value	$	86,400	$	86,400

	Stock Options Outstanding		Vested Stock Options
Quantity		76,064		76,064
Weighted-average exercise price	$	27.35	$	27.35
Weighted Average Remaining Contractual Term (in Years)		3.24		3.24
Intrinsic value	$	12,300	$	12,300