Related Party Transactions - Current Payables to Affiliates (Detail) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Current payables to affiliates: | ||
| Payable to affiliates | $ 1,717 | $ 220 |
| Other - Trade Items | ||
| Current payables to affiliates: | ||
| Payable to affiliates | 211 | 180 |
| Valhi | Income Taxes | ||
| Current payables to affiliates: | ||
| Payable to affiliates | $ 1,506 | $ 40 |