Note 14 - Selected Interim Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Quarterly Financial Information [Table Text Block]

201 8	First Quarter			Second Quarter		Third Quarter		Fourth Quarter
Revenues	$	26,868		$	27,300	$	27,948	$	27,881
Income from operations	$	6,530		$	8,316	$	9,109	$	8,503
Net income (loss)	$	(8,994	)	$	308	$	1,251	$	(1,566	)
Net income (loss) attributable to common stockholders	$	(3,630	)	$	124	$	505	$	(632	)
Basic and diluted net income (loss) per share	$	(0.21	)	$	0.00	$	0.02	$	(0.04	)

201 7	First Quarter			Second Quarter			Third Quarter			Fourth Quarter
Revenues	$	25,263		$	25,358		$	26,008		$	27,323
Income from operations	$	7,354		$	7,320		$	7,356		$	7,474
Net loss	$	(1,298	)	$	(1,611	)	$	(1,569	)	$	(1,523	)
Net loss attributable to common stockholders	$	(469	)	$	(650	)	$	(631	)	$	(615	)
Basic and diluted net loss per share	$	(0.03	)	$	(0.04	)	$	(0.04	)	$	(0.04	)