GOODWILL AND INTANGIBLE ASSETS, NET - Goodwill (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2018 USD ($) acquisition	Dec. 31, 2017 USD ($) acquisition
Goodwill
Number of acquisitions | acquisition		0	0
Goodwill [Roll Forward]
Balance at the beginning of the period		$ 86,283
Balance at the end of the period	$ 81,387	81,387	$ 86,283
Rental Property Management Business
Goodwill [Roll Forward]
Disposition		(2,256)
Write-off		(2,256)
Buy-Renovate-Lease-Sell Business
Goodwill [Roll Forward]
Disposition		(2,640)
Write-off		(2,640)
Real Estate Market | Buy-Renovate-Lease-Sell Business
Goodwill [Roll Forward]
Disposition	(2,600)	(2,600)
Write-off	(2,600)	(2,600)
Operating Segment | Mortgage Market
Goodwill [Roll Forward]
Balance at the beginning of the period		73,259
Balance at the end of the period	73,259	73,259	73,259
Operating Segment | Real Estate Market
Goodwill [Roll Forward]
Balance at the beginning of the period		10,056
Balance at the end of the period	5,160	5,160	10,056
Operating Segment | Real Estate Market | Rental Property Management Business
Goodwill [Roll Forward]
Disposition		(2,256)
Write-off		(2,256)
Operating Segment | Real Estate Market | Buy-Renovate-Lease-Sell Business
Goodwill [Roll Forward]
Disposition		(2,640)
Write-off		(2,640)
Other Businesses, Corporate and Eliminations
Goodwill [Roll Forward]
Balance at the beginning of the period		2,968
Balance at the end of the period	$ 2,968	2,968	$ 2,968
Discontinued Operations, Disposed of by Sale | Rental Property Management Business
Goodwill [Roll Forward]
Disposition		(2,300)
Write-off		$ (2,300)