Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Income Tax Examination [Line Items]
Unrecognized tax benefits, income tax penalties and interest accrued	$ 0
Deferred tax assets	570,033
Valuation allowance	63,178,248	62,261,161
Operating tax loss carryforwards, estimated	160,000,000
Operating tax loss carryforwards, estimated expire year	2034
Tax credit carryforward, amount	2,000,000
Tax credit carryforward, amount expire year	2031
Adjustments to additional paid in capital, income tax benefit from share-based compensation	0
Molecular Profiles [Member]
Income Tax Examination [Line Items]
Deferred tax assets	2,800,000
Deferred tax liability	2,200,000
Valuation allowance	0
Operating tax loss carryforwards, estimated	$ 11,000,000