Envestnet, Inc. Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Restricted Cash) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents	$ 289,345	$ 60,115	$ 52,592
Restricted cash	158	2,000
Total cash, cash equivalents and restricted cash	289,671	62,263	54,740	$ 51,866
Prepaid expense and other current assets
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	158	2,000	429
Other non-current assets
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	$ 168	$ 148	$ 1,719