Commitments and Contingencies - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended			6 Months Ended		7 Months Ended
	Aug. 31, 2013	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2013	Dec. 31, 2014
Other Commitments [Line Items]
Operating leases, expiration year					2020
Rent expense		$ 257,000		$ 313,000	$ 521,000	$ 637,000
Restricted cash		250,000			250,000			$ 250,000
Third party software vendor licensed lost						934,000
Accrued contingent liability				$ 100,000		$ 100,000
Loss contingency receivable		934,000			934,000
Payment of legal expenses					$ 85,000
Volume pricing agreements period of OVRP					12 months
Provision on contingencies		$ 0			$ 0
Bellevue [Member] | Washington [Member]
Other Commitments [Line Items]
Cash lease payments made							$ 0
Leasehold improvements and furniture provided by the landlord	$ 1,128,000
Bellevue [Member] | Washington [Member] | Minimum [Member]
Other Commitments [Line Items]
Expiration date of operating lease	2014-08
Bellevue [Member] | Washington [Member] | Maximum [Member]
Other Commitments [Line Items]
Expiration date of operating lease			2020-05