Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Taxes

Schedule of components of the Company's loss before income tax provision

	Years Ended
	December 31,
	2016			2015			2014
Loss before provision for income taxes:
Domestic	$	(14,412	)	$	(41,611	)	$	(22,248	)
Foreign	(6,419		)	(1,136		)	(898		)
Total loss before provision for income taxes	$	(20,831	)	$	(42,747	)	$	(23,146	)

Schedule of the Company's income tax provision

	Years Ended
	December 31,
	2016			2015			2014
Provision for current income taxes:
U.S. federal	$	—		$	—		$	—
U.S. state and local	(37		)	361			328
Foreign	245			183			15
Total provision for current income taxes	208			544			343
Benefit for deferred income taxes:
U.S. federal	—			—			—
U.S. state and local	—			—			—
Foreign	(92		)	(61		)	—
Total benefit for deferred income taxes	(92		)	(61		)	—
Total provision for income taxes	$	116		$	483		$	343

Schedule of reconciliation between the U.S. federal statutory income tax rate to the effective tax rate

	Years Ended
	December 31,
	2016		2015		2014
U.S. federal statutory income tax rate	(34.00	)%	(34.00	)%	(34.00	)%
State income tax rate, net of U.S. federal tax benefit	(0.18	)	0.85		0.94
Stock-based compensation expense	1.40		1.06		2.70
Acquisition related costs	5.77		—		—
Mark-to-market expense	2.04		—		—
Change in income tax rates	3.04		0.35		1.73
Change in deferred tax asset valuation	21.12		14.91		28.71
Goodwill impairment charge	—		16.61		—
Other	1.37		1.35		1.40
Effective tax rate	0.56	%	1.13	%	1.48	%

Summary of significant components of the Company's deferred tax assets and liabilities

	December 31,
	2016			2015
Deferred tax assets:
Net operating losses and tax credits	$	46,336		$	43,990
Stock-based compensation expense	3,883			3,579
Deferred rent	1,483			1,148
Depreciation and amortization expense	61			631
Accrued expenses	192			234
Allowance for doubtful accounts	1			19
Other	95			157
Total deferred tax assets before valuation allowance	52,051			49,758
Less: valuation allowance	(50,211		)	(45,932		)
Total deferred tax assets, net of valuation allowance	1,840			3,826
Deferred tax liabilities:
Intangible assets	(2,277		)	(4,324		)
Depreciation and amortization expense	—			—
Other	(10		)	(12		)
Total deferred tax liabilities	(2,287		)	(4,336		)
Total deferred tax liabilities, net	$	(447	)	$	(510	)