Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
LendingClub net income (loss)	$ (31,181)	$ (29,844)
Other comprehensive income (loss), before tax:
Net unrealized gain on securities available for sale	22	236
Other comprehensive income (loss), before tax	22	236
Income tax effect	(19)	95
Other comprehensive income (loss), net of tax	41	141
Less: Other comprehensive income (loss) attributable to noncontrolling interests	(9)	0
LendingClub other comprehensive income (loss), net of tax	50	141
LendingClub comprehensive income (loss)	(31,131)	(29,703)
Comprehensive income (loss) attributable to noncontrolling interests	(9)	0
Total comprehensive income (loss)	$ (31,140)	$ (29,703)