Summary of Operating Loss Carryforwards (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	$ 554
State Operating Loss Carryforwards	28,728
Foreign Operating Loss Carryforwards		$ 4,296
2020
Operating Loss Carryforwards [Line Items]
State Operating Loss Carryforwards	269
2021
Operating Loss Carryforwards [Line Items]
State Operating Loss Carryforwards	2,141
2022
Operating Loss Carryforwards [Line Items]
State Operating Loss Carryforwards	4,934
2023
Operating Loss Carryforwards [Line Items]
State Operating Loss Carryforwards	4,342
2024
Operating Loss Carryforwards [Line Items]
State Operating Loss Carryforwards	1,498
2025-2029
Operating Loss Carryforwards [Line Items]
State Operating Loss Carryforwards	7,673
2030-2034
Operating Loss Carryforwards [Line Items]
State Operating Loss Carryforwards	4,329
Foreign Operating Loss Carryforwards		15
Beyond 2034
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	554
State Operating Loss Carryforwards	2,185
Foreign Operating Loss Carryforwards		74
Non-Expiring
Operating Loss Carryforwards [Line Items]
State Operating Loss Carryforwards	$ 1,357
Foreign Operating Loss Carryforwards		$ 4,207