CONTINGENCIES (Details) $ in Thousands				1 Months Ended		6 Months Ended	12 Months Ended
	Feb. 20, 2017 regulator	Oct. 14, 2011 regulator	Sep. 08, 2010 patent	Feb. 29, 2016	Dec. 31, 2013	Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($) loan	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Mar. 12, 2014 patent
Contingencies
Accrued litigation liabilities								$ 736	$ 636
Loss Contingency, Number of Defendants				149
Massachusetts Division of Banks
Contingencies
Accrued litigation liabilities								500
Number of Joining Regulators | regulator		34
Massachusetts Division of Banks | Subsequent event
Contingencies
Number of Joining Regulators | regulator	0
Lehman Brothers Holdings, Inc. Demand Letter [Member]
Contingencies
Loss Contingencies, Number of Loans Sold with Losses | loan							64
Pending litigation or appeal | Lending Tree v. Zillow, Inc.
Contingencies
Number of patents infringed | patent			1
Number of patents found not infringed upon | patent										2
Litigation settlement						$ 1,100	$ 2,300
Pending litigation or appeal | Next Advisor [Member] [Domain]
Contingencies
Accrued litigation liabilities								100
Pending litigation or appeal | Residential Funding Co. v Home Loan Center [Member]
Contingencies
Accrued litigation liabilities								3,000
Number of Loan Originators					80
Pending litigation or appeal | Lehman Brothers Holdings, Inc. Demand Letter [Member]
Contingencies
Accrued litigation liabilities								1,000
Discontinued Operations, Disposed of by Sale [Member]
Contingencies
Accrued litigation liabilities								4,000	$ 3,600
Minimum [Member] | Massachusetts Division of Banks
Contingencies
Range of possible loss, minimum								500
Maximum [Member] | Massachusetts Division of Banks
Contingencies
Range of possible loss, minimum								$ 6,500
Maximum [Member] | Pending litigation or appeal | Lending Tree v. Zillow, Inc.
Contingencies
Range of possible loss, minimum							$ 9,700