ACQUISITIONS - RentRange, Investability and Onit Solutions (Details) - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
	Oct. 09, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Acquisitions
Value of common stock paid at acquisition		$ 21,733	$ 0	$ 0
Goodwill		$ 82,801	$ 90,851	$ 99,414
RentRange, Investability and Onit Solutions [Member]
Acquisitions
Amount paid	$ 24,800
Cash paid at acquisition	$ 17,500
Number of shares exchanged for acquisition	247
Value of common stock paid at acquisition	$ 7,300
Business Combination, Contingent Consideration Arrangements, Payment Period	4 years
Cash	$ 3
Accounts receivable, net	245
Premises and equipment, net	1,206
Prepaid expenses and Other assets	199
Software	1,265
Trademark and Trade Names	1,205
Database/Others	910
Non-Compete Agreements	330
Customer relationship	255
Goodwill	19,565
Assets acquired	25,183
Accounts payable and accrued expenses	(391)
Purchase price	$ 24,792