GOODWILL AND INTANGIBLE ASSETS - Scheduleof Goodwill (Details) - USD ($)	3 Months Ended	6 Months Ended
	Mar. 31, 2020	Jun. 30, 2020
Goodwill [Roll Forward]
Beginning balance	$ 133,082,000	$ 133,082,000
Goodwill from current year business acquisitions		5,254,000
Impairment charges	(5,300,000)	(5,254,000)
Ending balance		133,082,000
Rhode Island
Goodwill [Roll Forward]
Beginning balance	83,101,000	83,101,000
Goodwill from current year business acquisitions		0
Impairment charges		0
Ending balance		83,101,000
Delaware
Goodwill [Roll Forward]
Beginning balance	1,047,000	1,047,000
Goodwill from current year business acquisitions		0
Impairment charges		0
Ending balance		1,047,000
Biloxi
Goodwill [Roll Forward]
Beginning balance	48,934,000	48,934,000
Goodwill from current year business acquisitions		0
Impairment charges		0
Ending balance		48,934,000
Other
Goodwill [Roll Forward]
Beginning balance	$ 0	0
Goodwill from current year business acquisitions		5,254,000
Impairment charges		(5,254,000)
Ending balance		$ 0