Quarterly report pursuant to Section 13 or 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
Mar. 31, 2012
Dec. 31, 2011
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 99,103 62,784
Restricted Cash and Cash Equivalents Held By Repurchase Counterparties as Restricted Collateral 46,180 94,803
Restricted Cash and Cash Equivalents $ 154,283 $ 166,587