Note 8 - Preferred Stock and Common Stock Warrants (Tables)

9 Months Ended

Sep. 30, 2019

Notes Tables

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

	September 30,			December 31,
	2019			2018
Stock price	$	5.76		$	5.40
Exercise price	$	0.01		$	0.01
Risk-free rate		1.6	%		2.5	%
Volatility		27.0	%		33.1	%
Term (years)		2.1			2.7

Schedule of Allocation of Net Cash Proceeds [Table Text Block]

			Allocation of Proceeds
					Series B
			Series B		Preferred
			Warrants		Stock
Gross proceeds	$	20,945
Equity issuance costs		—
Net proceeds - Initial Fair Value Allocation	$	20,945	$	1,936	$	19,009
Per balance sheet upon issuance			$	1,936	$	19,009