Annual report pursuant to Section 13 and 15(d)

Schedule of Restricted Cash and Cash Equivalents (Details)

v2.4.0.6
Schedule of Restricted Cash and Cash Equivalents (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Restricted Cash and Cash Equivalents Items [Line Items]    
Restricted Cash and Cash Equivalents Held By Broker Counterparties For Securities Trading Activity $ 9,000 $ 9,000
Restricted Cash and Cash equivalents Held by Broker Counterparties For Derivatives Trading Activity 62,784 1,914
Restricted Cash and Cash Equivalents Held By Repurchase Counterparties as Restricted Collateral 94,803 11,634
Restricted Cash and Cash Equivalents $ 166,587 $ 22,548