12. Unaudited Quarterly Financial Information

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Unaudited Quarterly Financial Information

	Quarter Ended
	December 31			September 30		June 30		March 31
2020	(in thousands, except per share data)
Total revenue	$	3,268		$	2,938	$	2,610	$	2,719
Operating income		295			411		1,019		589
Net income (loss) before income taxes		(4,984	)		83		696		(337	)
Net income (loss)		(5,906	)		83		696		(255	)
Net income (loss) per common share
Basic		(.26	)		.00		.03		(.01	)
Diluted		(.26	)		.00		.03		(.01	)

	Quarter Ended
	December 31			September 30		June 30		March 31
2019	(in thousands, except per share data)
Total revenue	$	2,582		$	3,079	$	3,121	$	2,923
Operating income		224			835		801		754
Net income (loss) before income taxes		(1,283	)		615		580		627
Net income (loss)		(1,763	)		467		441		476
Net income (loss) per common share
Basic		(.08	)		.02		.02		.02
Diluted		(.08	)		.02		.02		.02