Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Schedule of allowance for doubtful accounts

The following table presents the changes in the allowance for doubtful accounts:

	Years Ended December 31,
	2017		2016		2015
Allowance for doubtful accounts:
Beginning balance	$	—	$	—	$	—
Less: write-offs and other adjustments	359		—		—
Ending balance	$	359	$	—	$	—

Schedule of estimated useful lives of property and equipment

Depreciation expense on property and equipment is calculated using the straight-line method over the following estimated useful lives:

Computer hardware	3 years
Furniture and fixtures	7 years
Computer software	3 years
Office equipment	3 years

Schedule of estimated useful lives of intangible assets that are not considered to have an indefinite useful life

Intangible assets that are not considered to have an indefinite useful life are amortized over their estimated useful lives on a straight-line method as follows:

Customer relationships 5 to 10 years