| Component: (Network and Table) | |
|---|---|
| Network | NB: Schedule: Long-Term Debt, by Component (http://xasb.org/gaap/role/schedule/level4/DebtDetails) |
| Table | Long-Term Debt, by Component [Table] |
| Long-Term Debt, by Component [Line Items] | Period [Axis] | |
|---|---|---|
2010-12-31 | 2009-12-31 | |