Acquisition of Molecular Profiles Limited - Additional Information (Detail) (USD $)	4 Months Ended	12 Months Ended		0 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Sep. 12, 2013 Molecular Profiles [Member]	Dec. 31, 2013 Molecular Profiles [Member]	Dec. 31, 2013 Molecular Profiles [Member] Trade Names [Member]	Dec. 31, 2013 Molecular Profiles [Member] Developed Technology & Patents [Member]	Dec. 31, 2013 Molecular Profiles [Member] Customer Relationships [Member]
Business Acquisition [Line Items]
Cash paid for acquisition of Molecular Profiles				$ 16,700,000
Shares issued to Molecular Profiles stockholders				1,051,323
Purchase price, net				24,000,000	25,700,913
Net assets acquired					25,700,913
Identifiable assets, customer relationships					2,910,000	300,000	1,400,000	1,200,000
Goodwill	11,151,925	11,151,925			10,660,296
Service Revenue	3,640,453	3,640,453
Acquisition date					Sep. 12, 2013
Acquisition related costs		1,623,368			1,100,000
Costs associated with failed transaction					$ 500,000