Consolidated Statements of Operations and Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenue:
Interest income	$ 195,048	$ 145,275	$ 62,941
Gain on sales of loans	53,354	8,823	788
Other revenue	6,365	3,966	1,520
Gross revenue	254,767	158,064	65,249
Cost of revenue:
Provision for loan losses	74,863	67,432	26,570
Funding costs	20,244	17,200	13,419
Total cost of revenue	95,107	84,632	39,989
Net revenue	159,660	73,432	25,260
Operating expense:
Sales and marketing	60,575	33,201	18,095
Technology and analytics	42,653	17,399	8,760
Processing and servicing	13,053	8,230	5,577
General and administrative	45,304	21,680	12,169
Total operating expense	161,585	80,510	44,601
Loss from operations	(1,925)	(7,078)	(19,341)
Other expense:
Interest expense	(306)	(398)	(1,276)
Warrant liability fair value adjustment	0	(11,232)	(3,739)
Total other expense	(306)	(11,630)	(5,015)
Loss before provision for income taxes	(2,231)	(18,708)	(24,356)
Provision for income taxes	0	0	0
Net loss	(2,231)	(18,708)	(24,356)
Series A and Series B preferred stock redemptions	0	0	(5,254)
Accretion of dividends on redeemable convertible preferred stock	0	(12,884)	(7,470)
Net loss attributable to noncontrolling interest	958	0	0
Net loss attributable to On Deck Capital, Inc. common stockholders	$ (1,273)	$ (31,592)	$ (37,080)
Net loss per share attributable to On Deck Capital, Inc. common shareholders:
Basic and diluted (in dollars per share)	$ (0.02)	$ (0.60)	$ (8.64)
Weighted-average common shares outstanding:
Basic and diluted (shares)	69,545,238	52,556,998	4,292,026
Comprehensive loss:
Foreign currency translation adjustment	$ (678)	$ 0	$ 0
Comprehensive loss	(2,909)	(18,708)	(24,356)
Comprehensive loss attributable to noncontrolling interests	306	0	0
Comprehensive loss attributable to On Deck Capital, Inc. common stockholders	$ (1,645)	$ (18,708)	$ (24,356)