Commitments and Contingencies - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended				7 Months Ended	9 Months Ended
	Aug. 31, 2013	Sep. 30, 2016	Sep. 30, 2015	Mar. 31, 2015	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Other Commitments [Line Items]
Operating leases, expiration year							2020
Rent expense		$ 262,000	$ 268,000				$ 781,000	$ 789,000
Restricted cash equivalents									$ 250,000
Third party software vendor licensed lost					$ 934,000
Accrued contingent liability		$ 0			$ 100,000		$ 0		$ 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]
Expiration date of operating lease	2014-08
Extended expiration date of operating lease	2020-05
Cash lease payments made						$ 0
Leasehold improvements and furniture provided by the landlord	$ 1,128,000