SEGMENT REPORTING (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) segment	Sep. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)
Segment Reporting [Abstract]
Number of reporting segments | segment			2
SEGMENT REPORTING
Revenue	$ 204,575	$ 234,979	$ 620,569	$ 726,147
Cost of revenue	147,580	174,898	457,980	538,244
Gross profit (loss)	56,995	60,081	162,589	187,903
Operating expenses (income):
Selling, general and administrative expenses	46,329	46,622	132,377	146,793
Gain on sale of business	(13,688)	0	(13,688)	0
Restructuring charges	3,436	0	3,436	0
Income (loss) from operations	20,918	13,459	40,464	41,110
Total other income (expense), net	(4,789)	(3,102)	(26,236)	(8,847)
Income (loss) before income taxes and non-controlling interests	16,129	10,357	14,228	32,263
Total assets:
Total assets	829,265		829,265		$ 865,164
Operating Segment | Mortgage Market
SEGMENT REPORTING
Revenue	175,960	199,262	521,960	614,180
Cost of revenue	113,636	137,466	340,038	421,942
Gross profit (loss)	62,324	61,796	181,922	192,238
Operating expenses (income):
Selling, general and administrative expenses	21,155	28,006	65,133	86,493
Gain on sale of business	0		0
Restructuring charges	901		901
Income (loss) from operations	40,268	33,790	115,888	105,745
Total other income (expense), net	74	26	86	138
Income (loss) before income taxes and non-controlling interests	40,342	33,816	115,974	105,883
Total assets:
Total assets	258,814		258,814		304,346
Operating Segment | Real Estate Market
SEGMENT REPORTING
Revenue	13,010	22,121	52,435	67,314
Cost of revenue	15,883	23,497	62,628	72,484
Gross profit (loss)	(2,873)	(1,376)	(10,193)	(5,170)
Operating expenses (income):
Selling, general and administrative expenses	5,188	4,208	14,486	14,084
Gain on sale of business	(13,688)		(13,688)
Restructuring charges	74		74
Income (loss) from operations	5,553	(5,584)	(11,065)	(19,254)
Total other income (expense), net	22	0	36	0
Income (loss) before income taxes and non-controlling interests	5,575	(5,584)	(11,029)	(19,254)
Total assets:
Total assets	118,549		118,549		64,624
Other Businesses, Corporate and Eliminations
SEGMENT REPORTING
Revenue	15,605	13,596	46,174	44,653
Cost of revenue	18,061	13,935	55,314	43,818
Gross profit (loss)	(2,456)	(339)	(9,140)	835
Operating expenses (income):
Selling, general and administrative expenses	19,986	14,408	52,758	46,216
Gain on sale of business	0		0
Restructuring charges	2,461		2,461
Income (loss) from operations	(24,903)	(14,747)	(64,359)	(45,381)
Total other income (expense), net	(4,885)	(3,128)	(26,358)	(8,985)
Income (loss) before income taxes and non-controlling interests	(29,788)	$ (17,875)	(90,717)	$ (54,366)
Total assets:
Total assets	$ 451,902		$ 451,902		$ 496,194