Annual report pursuant to Section 13 and 15(d)

Restricted Cash (Details)

v2.4.1.9
Restricted Cash (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Restricted Cash and Cash Equivalents Items [Line Items]    
Restricted Cash and Cash Equivalents Held By Broker Counterparties For Securities Trading Activity $ 12,000two_RestrictedCashAndCashEquivalentsHeldByBrokerCounterpartiesForSecuritiesTradingActivity $ 9,000two_RestrictedCashAndCashEquivalentsHeldByBrokerCounterpartiesForSecuritiesTradingActivity
Restricted Cash and Cash equivalents Held by Broker Counterparties For Derivatives Trading Activity 211,989two_RestrictedCashAndCashEquivalentsHeldByBrokerCounterpartiesForDerivativesTradingActivity 191,107two_RestrictedCashAndCashEquivalentsHeldByBrokerCounterpartiesForDerivativesTradingActivity
Restricted Cash and Cash Equivalents Pledged as Restricted Collateral for Borrowings 112,435two_RestrictedCashandCashEquivalentsPledgedasRestrictedCollateralforBorrowings 201,194two_RestrictedCashandCashEquivalentsPledgedasRestrictedCollateralforBorrowings
Restricted Cash and Cash Equivalents Held by Broker Counterparties or Pledged as Collateral for Borrowings 336,424two_RestrictedCashandCashEquivalentsHeldbyBrokerCounterpartiesorPledgedasCollateralforBorrowings 401,301two_RestrictedCashandCashEquivalentsHeldbyBrokerCounterpartiesorPledgedasCollateralforBorrowings
Restricted Cash and Cash Equivalents, Noncurrent 347us-gaap_RestrictedCashAndCashEquivalentsNoncurrent 346us-gaap_RestrictedCashAndCashEquivalentsNoncurrent
Restricted Cash and Cash Equivalents $ 336,771us-gaap_RestrictedCashAndCashEquivalents $ 401,647us-gaap_RestrictedCashAndCashEquivalents