Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Summary of Contractual Obligations (Detail)

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Commitments and Contingencies - Summary of Contractual Obligations (Detail)
$ in Thousands
Mar. 31, 2019
USD ($)
Contractual Obligation Fiscal Year Maturity Schedule [Line Items]  
Total $ 526
Less than 1 year 155
1-3 years 301
3-5 years 70
Vancouver Office Operating Lease [Member]  
Contractual Obligation Fiscal Year Maturity Schedule [Line Items]  
Total 245
Less than 1 year 47
1-3 years 128
3-5 years 70
Seattle Office Operating Lease [Member]  
Contractual Obligation Fiscal Year Maturity Schedule [Line Items]  
Total 281
Less than 1 year 108
1-3 years $ 173