Components of Inventories (Detail) - USD ($) $ in Thousands |
Dec. 31, 2017 |
[1] | Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|||
|---|---|---|---|---|---|---|---|---|
| Inventory [Line Items] | ||||||||
| Raw materials | $ 300 | $ 2,400 | ||||||
| Finished goods | 27,100 | 26,100 | ||||||
| Total | 27,400 | 28,500 | ||||||
| Less: Provision for obsolescence | (1,200) | (1,800) | [1] | $ (2,000) | $ (1,700) | |||
| Inventories, net | $ 26,164 | $ 26,678 | ||||||
| ||||||||
| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of valuation reserve for inventory. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|