Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net loss attributable to Marketo	$ (71,497)	$ (54,337)	$ (47,360)
Net loss and adjustment attributable to redeemable non-controlling interests (Note 3)	(2,418)	618
Net loss	(69,079)	(54,955)	(47,360)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	13,937	9,475	4,621
Stock-based compensation expense	39,182	25,120	8,075
Deferred income taxes	568	(672)	(65)
Provision for doubtful accounts	738	417	452
Loss on disposal of assets	7	1
Changes in operating assets and liabilities:
Accounts receivable	(13,952)	(11,779)	(13,154)
Prepaid expenses and other current assets	(4,489)	(1,388)	(698)
Other assets	(834)	(709)	(46)
Accounts payable	1,628	(342)	2,050
Accrued expenses and other current liabilities	5,213	(1,599)	13,177
Deferred revenue	29,686	22,371	20,438
Deferred rent	(355)	37	141
Net cash provided by (used in) operating activities	2,250	(14,023)	(12,369)
Cash flows from investing activities:
Increase in restricted cash	(215)
Purchase of property and equipment	(15,849)	(8,378)	(11,401)
Cash provided by (used in) acquisition, net of cash acquired		326	(6,216)
Capitalized software development	(1,017)	(645)	(459)
Net cash used in investing activities	(17,081)	(8,697)	(18,076)
Cash flows from financing activities:
Proceeds from initial public offering, net of underwriting discount			80,506
Proceeds from private placement			6,500
Proceeds from follow-on offering, net of underwriting discount			22,519
Proceeds from issuance of common stock upon exercise of stock options	5,999	5,540	4,985
Proceeds from employee stock purchase plan	5,629	6,143
Repurchase of unvested common stock from terminated employees	(38)	(49)	(22)
Withholding taxes remitted for the net share settlement of an equity awards	(740)	(2,638)	(124)
Proceeds from issuance of debt			4,500
Repayment of debt	(2,719)	(2,187)	(582)
Investment from non-controlling interest	1,678	1,953
Payment incurred for common stock registration related to acquisition		(319)	(35)
Payment of initial public offering costs and follow-on offering costs		(104)	(3,820)
Net cash provided by financing activities	9,809	8,339	114,427
Effect of foreign exchange rate changes on cash and cash equivalents	(404)	(1,274)	70
Net increase (decrease) in cash and cash equivalents	(5,426)	(15,655)	84,052
Cash and cash equivalents - beginning of period	112,644	128,299	44,247
Cash and cash equivalents - end of period	107,218	112,644	128,299
Supplemental disclosures of cash flow information:
Cash paid for interest	168	272	211
Cash paid for income taxes	394	80	33
Supplemental disclosure of noncash investing and financing activities:
Conversion of convertible preferred stock into common stock upon initial public offering			119,121
Convertible preferred stock and common stock issued in connection with acquisitions, including options assumed		4,756	14,069
Vesting of early exercised options	140	279	655
Unpaid and accrued fixed assets	115	1,330	376
Property and equipment acquired through tenant improvement allowance	$ 211	$ 973	$ 1,262