Income Taxes - Summary of Income (Loss) Before Income Taxes and Equity Loss in Investee (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2019 |
Sep. 30, 2019 |
Jun. 30, 2019 |
Mar. 31, 2019 |
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2019 |
Dec. 31, 2018 |
|
Income Tax Disclosure [Abstract] | ||||||||||
U.S. income (loss) before income taxes and equity loss in investee | $ 679 | $ (4,602) | ||||||||
Foreign income (loss) before income taxes and equity loss in investee | (270) | (34) | ||||||||
Income (loss) before income taxes and equity loss in investee | $ (160) | $ 1,698 | $ 487 | $ (1,616) | $ (931) | $ (703) | $ (903) | $ (2,099) | $ 409 | $ (4,636) |