Unaudited Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (684)	$ 124
Other comprehensive loss:
Unrealized gain on available-for-sale securities	69	202
Unrealized loss on interest rate swap	(3,959)	(733)
Other comprehensive loss before taxes	(3,890)	(531)
Benefit for income taxes related to other comprehensive income items	1,060	112
Other comprehensive loss	(2,830)	(419)
Comprehensive loss	(3,514)	(295)
Comprehensive (loss) income attributable to non-controlling interests	(2)	5
Comprehensive loss attributable to common stockholders	$ (3,512)	$ (300)