Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
LendingClub net loss	$ (60,861)	$ (25,454)	$ (92,042)	$ (55,298)
Other comprehensive income (loss), before tax:
Net unrealized gain (loss) on securities available for sale	(413)	49	(391)	285
Other comprehensive income (loss), before tax	(413)	49	(391)	285
Income tax effect	(1)	19	(20)	114
Other comprehensive income (loss), net of tax	(412)	30	(371)	171
Less: Other comprehensive income (loss) attributable to noncontrolling interests	26	0	17	0
LendingClub other comprehensive income (loss), net of tax	(438)	30	(388)	171
LendingClub comprehensive income (loss)	(61,299)	(25,424)	(92,430)	(55,127)
Comprehensive income (loss) attributable to noncontrolling interests	26	0	17	0
Total comprehensive income (loss)	$ (61,273)	$ (25,424)	$ (92,413)	$ (55,127)