|
Schedule I - Supplemental Cash Flow Information and Disclosures of Non-Cash Transactions (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
||||||
| Condensed Financial Statements, Captions [Line Items] | ||||||||
| Gain on sale of limited partnership investment | $ 0 | $ 0 | $ (128,330) | |||||
|
Parent [Member]
|
||||||||
| Condensed Financial Statements, Captions [Line Items] | ||||||||
| Gain on sale of limited partnership investment | $ 344,937 | [1] | $ 174,201 | [1] | $ 54,308 | [1] | ||
|
||||||||
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The difference between the carrying value and the sale price of equity securities, not separately or otherwise categorized as trading or available-for-sale. This element includes investments in which the entity holds a small ownership stake (generally, less than 20% of the shares outstanding) and cannot exert significant influence. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|