|
Significant Accounting Policies - Components of inventories (Detail) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2013
|
Dec. 31, 2012
|
|---|---|---|
| Accounting Policies [Abstract] | ||
| Supplies | $ 263 | $ 263 |
| Finished goods | 3,980 | 3,980 |
| Reserve for finished goods and supplies | (4,243) | (4,243) |
| Net inventories |