Provision for Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Schedule of Components of Provision for Income Taxes

The components of the Company's provision for income taxes from continuing operations were as follows:



	Year Ended December 31,
	2014		2013		2012
Current taxes:
Federal	$	—	$	—	$	—
State	67		52		162
Total current taxes	$	67	$	52	$	162
Deferred taxes:
Federal	$	—	$	—	$	—
State	4		3		2
Total deferred taxes	4		3		2
Provision for income taxes	$	71	$	55	$	164

Schedule of Deferred Tax Assets and Liabilities

The Company's deferred tax assets and deferred tax liabilities were as follows:



	December 31,
	2014			2013
Deferred tax assets:
NOL and credit carryforwards	$	21,328		$	16,340
Deferred revenue	2,657			1,596
Accrued expenses and other	3,386			3,295
Stock-based compensation	1,107			209
Total deferred tax assets	28,478			21,440
Deferred tax liabilities:
Deferred expenses	(5,128		)	(3,924		)
Depreciation and amortization	(2,972		)	(3,573		)
Total deferred tax liabilities	(8,100		)	(7,497		)
Deferred tax assets less tax liabilities	20,378			13,943
Less: valuation allowance	(20,266		)	(13,828		)
Net deferred tax asset	$	112		$	115

Schedule of Effective Income Tax Rate Reconciliation

The Company's provision for income taxes from continuing operations differs from the amount computed by applying the statutory federal income tax rate of 34% primarily as a result of the following:



	Year Ended December 31,
	2014		2013		2012
Income tax at U.S. statutory rate	34.0	%	34.0	%	34.0	%
Effect of:
Increase in deferred tax valuation allowance	(32.9	)	(32.7	)	(31.5	)
State taxes, net of federal benefit	1.5		1.4		(0.7	)
Other permanent items	(3.0	)	(3.0	)	(4.0	)
Income tax provision effective rate	(0.4	)%	(0.3	)%	(2.2	)%