Income Taxes (Tables)

6 Months Ended

Jun. 30, 2014

Income Taxes

Schedule of components of the income tax (benefit) provision

	Year Ended December 31,
	2011			2012			2013
Current:
Federal	$	—		$	—		$	—
State		2			3			7
Total current provision		2			3			7
Deferred:
Federal		(8,264	)		(318	)		504
State		(2,428	)		(291	)		68
Total deferred (benefit) provision		(10,692	)		(609	)		572
Total income tax (benefit) provision	$	(10,690	)	$	(606	)	$	579

Schedule of reconciliation between the amount computed by applying the U.S. federal statutory tax rate of 34% to income before income taxes and the income tax (benefit) provision

	Year Ended December 31,
	2011			2012			2013
Income tax benefit at the statutory rate	$	(6,679	)	$	(25,534	)	$	(8,322	)
State income taxes, net of federal benefit		(116	)		(5,742	)		218
Nondeductible expenses		142			144			346
Change in valuation allowance		(6,878	)		30,064			6,446
Expiration of capital loss carryforward		2,034			—			—
Research and development tax credits		(398	)		—			—
Stock-based compensation		1,571			646			2,037
Other		(366	)		(184	)		(146	)
Total income tax (benefit) provision	$	(10,690	)	$	(606	)	$	579

Schedule of components of deferred tax assets (liabilities)

	December 31, 2012			December 31, 2013
Deferred income tax assets:
Net operating loss carryforwards	$	47,511		$	49,921
Stock-based compensation		6,243			8,262
Accrued expenses		1,929			2,852
Research and development tax credits		610			610
Other		157			172
Gross deferred tax assets		56,450			61,817
Valuation allowance		(41,412	)		(47,858	)
Net deferred tax assets		15,038			13,959
Deferred tax liabilities:
State taxes		(3,405	)		(3,296	)
Property, equipment and software		(2,676	)		(3,353	)
Intangible assets and goodwill		(9,297	)		(8,566	)
Other		(344	)		—
Gross deferred tax liabilities		(15,722	)		(15,215	)
Total net deferred tax liabilities	$	(684	)	$	(1,256	)

Schedule of change in the valuation allowance

	Year Ended December 31,
	2011			2012		2013
Valuation allowance, at beginning of year	$	18,226		$	11,348	$	41,412
Increase in valuation allowance		3,941			30,064		6,446
Release of valuation allowance		(10,819	)		—		—
Valuation Allowances, at end of year	$	11,348		$	41,412	$	47,858

Schedule of reconciliation of the total amounts of unrecognized tax benefits

	Year Ended December 31,
	2011		2012			2013
Unrecognized tax benefit beginning of year	$	—	$	—		$	(4	)
Gross increases — tax positions in prior year		—		610			—
Gross decreases — tax positions in current year		—		(614	)		—
Unrecognized tax benefit end of year	$	—	$	(4	)	$	(4	)