Note 19 - Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Quarterly Financial Information [Table Text Block]

(U.S. Dollars, in thousands, except per share data)	Quarter ended
Year 2020	December 31(4)			September 30(3)			June 30(2)			March 31(1)
Total revenue	$	32,688		$	31,694		$	30,678		$	35,397
Gross profit		16,745			17,343			13,742			21,196
Net income (loss)	$	(15,657	)	$	(6,411	)	$	(7,708	)	$	5,794
Basic net income (loss) per share	$	(1.10	)	$	(0.45	)	$	(0.54	)	$	0.41
Diluted net income (loss) per share	$	(1.10	)	$	(0.45	)	$	(0.54	)	$	0.40
Basic common shares outstanding		14,275			14,205			14,199			14,202
Diluted common shares outstanding		14,275			14,205			14,199			14,353

(U.S. Dollars, in thousands, except per share data)	Quarter ended
Year 2019	December 31		September 30		June 30		March 31
Total revenue	$	29,772	$	29,697	$	30,418	$	24,723
Gross profit		21,123		23,746		23,582		17,412
Net income	$	4,051	$	9,200	$	9,435	$	4,507
Basic net income per share	$	0.28	$	0.65	$	0.68	$	0.32
Diluted net income per share	$	0.28	$	0.66	$	0.67	$	0.31
Basic common shares outstanding		14,280		14,070		13,916		14,185
Diluted common shares outstanding		14,621		14,387		14,088		14,314