Commitments and Contingencies - Additional Information (Detail)	3 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended
	Sep. 30, 2014 USD ($) Disposable_Kits	Jun. 30, 2014	Sep. 30, 2014 EUR (€)	Dec. 31, 2010 USD ($)	Sep. 30, 2014 Additional Concord Lease USD ($) Option
Commitments and Contingencies Disclosure [Line Items]
Minimum term of non-cancellable operating leases			1 year
Expiration of non-cancellable operating leases maximum year			2019
Early termination of non-cancellable operating leases minimum period					2016-02
Initial term of operating lease					2 years
Number of renewal options					4
Renewal period of operating lease					2 years
Lease commencement date					Aug. 01, 2013
Future rent payment, 2014					$ 39,000
Future rent payment, 2015					90,000
Financing for leasehold improvement				1,100,000
Outstanding liability related to leasehold improvements	600,000
Leasehold Improvements reflected in Accrued liabilities	100,000
Leasehold Improvements reflected in Other non-current liabilities	500,000
Transition agreement expiration date		Sep. 30, 2014
Number of disposable kits to be repurchased	2,000
Distribution fee per disposable kit			10
Potential maximum payment of distribution fee			€ 3,000,000