Segment Information - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Operating income (loss):
Interest expense	$ (10,618)	$ (3,667)	$ (9,039)
Depreciation and amortization	6,897	6,368	3,693
Other information
Goodwill	30,290	19,285
Operating Segments
Operating income (loss):
Impairment losses	900	800	0
Corporate, Non-Segment
Operating income (loss):
Depreciation and amortization	700	700	600
Florida | Operating Segments
Operating income (loss):
Interest expense	0	0	0
Depreciation and amortization	2,200	2,100	2,400
Other information
Goodwill	6,100
Carolinas | Operating Segments
Operating income (loss):
Interest expense	0	0	0
Depreciation and amortization	400	100	100
Other information
Goodwill	24,200
Arizona | Operating Segments
Operating income (loss):
Interest expense	0	0	0
Depreciation and amortization	$ 100	$ 0	$ 0