Commitments and Contingencies - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended				7 Months Ended	9 Months Ended
	Aug. 31, 2013	Sep. 30, 2015	Mar. 31, 2015	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Other Commitments [Line Items]
Operating leases, expiration year							2020
Rent expense		$ 268,000		$ 281,000			$ 789,000	$ 918,000
Restricted cash		250,000					250,000		$ 250,000
Third party software vendor licensed lost					$ 934,000
Accrued contingent liability		$ 0			$ 100,000		$ 0
Loss contingency receivable			$ 934,000
Payment of legal expenses			$ 85,000
Volume pricing agreements period of OVRP							12 months
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