Assets and Liabilities Held for Sale - Summary of Captira Sale (Details) - USD ($) $ in Thousands	Jun. 01, 2017	Jun. 30, 2017	Dec. 31, 2016
Disposal Group, Not Discontinued Operations
Assets of disposal group held for sale:
Cash and cash equivalents		$ 0	$ 321
Accounts receivable, net		0	177
Prepaid expenses and other current assets		0	97
Property and equipment, net		0	247
Other assets		0	6
Write-down to fair value		0	(744)
Total assets of disposal group held for sale		0	104
Liabilities of disposal group held for sale:
Accounts payable		0	9
Accrued expenses and other current liabilities		0	15
Accrued payroll and employee benefits		0	80
Total liabilities of disposal group held for sale		$ 0	$ 104
Habits at Work
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on disposition of business	$ 24