Income Taxes (Tables)

12 Months Ended

Dec. 31, 2015

Income Tax Disclosure [Abstract]

Summary of Income Taxes

A summary of income taxes as follows:

		December 31,
		2015	2014		2013
Current:
Federal	$	—	$	—	$	—
State		57,516		41,753		31,525
	$	57,516	$	41,753	$	31,525

Schedule of Reconciliation of the Statutory Federal Income Tax Rate

The reconciliation of the statutory federal income tax rate to the Company’s effective tax is presented below:

	December 31,
		2015		2014			2013
Tax at federal statutory rate		34.00	%		34.00	%		34.00	%
State taxes, net of federal		0.95			0.13			(0.10	)
Permanent items		(1.33	)		(18.40	)		(0.37	)
Other		(0.09	)		(1.58	)		0.33
Valuation allowance		(35.11	)		(14.26	)		(34.00	)
Effective tax rate		(1.58)	%		(0.11	)%		(0.14	)%

Significant Portions of the Deferred Tax Assets and Deferred Tax Liabilities

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities are as follows:

	December 31,
	2015			2014
Net deferred tax asset carryforward	$	58,386,785		$	59,942,144
Stock option expense		2,745,796			1,742,186
Property and equipment		(7,687,008	)		(4,605,896	)
Other		613,190			48,224
Less: Valuation allowance		(54,058,763	)		(57,126,658	)
Net deferred tax	$	—		$	—

Net Deferred Tax Assets and Liabilities

Net deferred tax assets and liabilities are summarized as follows:

	December 31,
	2015			2014
Total deferred tax assets	$	61,745,771		$	61,732,553
Total deferred tax liabilities		(7,687,008	)		(4,605,895	)
Valuation allowance		(54,058,763	)		(57,126,658	)
Net deferred income tax assets	$	—		$	—