CASH AND RESTRICTED CASH (Details - Balance Sheet) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016
Restricted Cash and Cash Equivalents
Cash and cash equivalents	$ 293,301	$ 368,550
Restricted cash and cash equivalents	49	4,091
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period	293,350	372,641	$ 359,725	$ 95,220
Cash in escrow for sale of LendingTree Loans
Restricted Cash and Cash Equivalents
Restricted cash and cash equivalents	0	4,034
Other Restricted Cash and Cash Equivalents
Restricted Cash and Cash Equivalents
Restricted cash and cash equivalents	$ 49	$ 57