Selected Interim Financial Data (unaudited) (Tables)

12 Months Ended

Dec. 31, 2018

Quarterly Financial Information Disclosure [Abstract]

Summary of Unaudited Quarterly Financial Information

The following is a summary of the unaudited quarterly financial information for the years ended December 31, 2018 and 2017 (amounts in thousands, except per share data):

	Quarter ended
	March 31			June 30			September 30			December 31
2018
Revenues	$	16,716		$	17,560		$	9,678		$	13,306
Interest expense		(2,558	)		(2,786	)		(3,190	)		(3,953	)
Net income (loss)		6,154			4,186			(1,196	)		362
Net income attributable to noncontrolling interest		(985	)		(954	)		(951	)		(953	)
Net income (loss) attributable to common stockholders	$	5,169		$	3,232		$	(2,147	)	$	(591	)
Net income (loss) attributable to common stockholders per share:
Basic and diluted	$	0.16		$	0.10		$	(0.07	)	$	(0.02	)

	Quarter ended
	March 31			June 30			September 30			December 31
2017
Revenues	$	14,282		$	14,825		$	15,766		$	16,232
Interest expense		(1,515	)		(1,808	)		(2,117	)		(2,261	)
Net income		5,475			5,732			6,266			6,679
Net income attributable to noncontrolling interest		(944	)		(936	)		(941	)		(909	)
Net income attributable to common stockholders	$	4,531		$	4,796		$	5,325		$	5,770
Net income attributable to common stockholders per share:
Basic and diluted	$	0.14		$	0.15		$	0.17		$	0.18