Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)
|
12 Months Ended |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
| Significant Accounting Policies [Line Items] |
|
|
|
| Depreciation expense |
$ 3,600,000
|
$ 3,600,000
|
$ 3,300,000
|
| Net income tax payments |
$ 611,000
|
193,000
|
302,000
|
| Uncertain tax positions |
50.00%
|
|
|
| Advertising costs |
$ 0
|
0
|
0
|
| Research, development and certain sales technical support costs |
$ 0
|
0
|
0
|
| Minimum | Building |
|
|
|
| Significant Accounting Policies [Line Items] |
|
|
|
| Property and equipment, estimated useful lives |
15 years
|
|
|
| Minimum | Equipment and Software |
|
|
|
| Significant Accounting Policies [Line Items] |
|
|
|
| Property and equipment, estimated useful lives |
3 years
|
|
|
| Maximum | Building |
|
|
|
| Significant Accounting Policies [Line Items] |
|
|
|
| Property and equipment, estimated useful lives |
40 years
|
|
|
| Maximum | Equipment and Software |
|
|
|
| Significant Accounting Policies [Line Items] |
|
|
|
| Property and equipment, estimated useful lives |
20 years
|
|
|
| Kronos |
|
|
|
| Significant Accounting Policies [Line Items] |
|
|
|
| Parent company ownership interest |
30.00%
|
|
|
| Valhi Inc |
|
|
|
| Significant Accounting Policies [Line Items] |
|
|
|
| Parent company ownership interest |
83.00%
|
|
|
| Net income tax refunds |
|
$ 100,000
|
|
| Net income tax payments |
$ 600,000
|
|
$ 300,000
|
| Contran Corporation |
|
|
|
| Significant Accounting Policies [Line Items] |
|
|
|
| Parent company ownership interest |
93.00%
|
|
|
| CompX |
|
|
|
| Significant Accounting Policies [Line Items] |
|
|
|
| Percentage of controlling interest owned |
13.00%
|
|
|