Leases - Component of Lease Expense, Supplemental Cash Flow Information and Supplemental Balance Sheet Information Related to Leases (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Total component lease expense was as follows (in thousands):
Operating leases	$ 348
Supplemental cash flow information related to leases was as follows (in thousands):
Cash paid for amounts included in the measurement of lease liabilities	429
Operating leases:
Right of use	1,089
Current portion of operating lease liability	1,131
Operating lease liability, net of current portion	374
Total operating lease liabilities	$ 1,505
Weighted Average Remaining Lease Term	1 year 4 months 24 days
Weighted Average Discount Rate	7.00%