Fair Value of Financial Instruments (Fair Value and Carrying Value of Financial Instruments Measured on a Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 Significant unobservable inputs Level 3	Dec. 31, 2013 Significant unobservable inputs Level 3	Sep. 30, 2014 Recurring Corporate loans	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Interest Rate Lock Commitments [Member]	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Credit derivatives	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Credit derivatives	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 U.S. Treasury securities	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 U.S. Treasury securities	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Derivative Financial Instruments, Liabilities [Member]	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Privately held equity securities		Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Privately held equity securities		Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Tax exempt securities	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Tax exempt securities	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 CDO	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 CDO	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 CLO	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 CLO	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Corporate bonds		Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Corporate bonds		Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Corporate loans		Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Corporate loans		Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 U.S. Treasury securities	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 U.S. Treasury securities	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Obligations of state and political subdivisions	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Obligations of state and political subdivisions	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Certificates of deposit	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Certificates of deposit	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Asset-backed securities	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Asset-backed securities	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Credit Default Swap	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Credit Default Swap	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Cash	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Cash	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Short-term investments	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Short-term investments	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 U.S. government agencies	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 U.S. government agencies	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Municipal bonds	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Municipal bonds	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Preferred stocks	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Preferred stocks	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Common stock	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Common stock	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Mutual funds	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Mutual funds	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Real estate funds	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Real estate funds	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Private equity	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Private equity	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Multi-strategy	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Multi-strategy	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Long/short	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Long/short	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Fund of funds	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Fund of funds	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Event driven	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Event driven	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Long only	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Long only	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Global macro	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Global macro	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Fixed income arbitrage	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Fixed income arbitrage	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Master limited partnerships	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Master limited partnerships	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Fixed income (non-arbitrage)	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Fixed income (non-arbitrage)	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Other	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Other	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Other	Dec. 31, 2013 Recurring Quoted prices in active markets Level 1 Other	Sep. 30, 2014 Recurring Quoted prices in active markets Level 1 Credit derivatives	Sep. 30, 2014 Recurring Other significant observable inputs Level 2	Dec. 31, 2013 Recurring Other significant observable inputs Level 2	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Interest Rate Lock Commitments [Member]	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Credit derivatives	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Credit derivatives	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 U.S. Treasury securities	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 U.S. Treasury securities	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Derivative Financial Instruments, Liabilities [Member]	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Privately held equity securities		Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Privately held equity securities		Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Tax exempt securities	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Tax exempt securities	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 CDO	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 CDO	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 CLO	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 CLO	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Corporate bonds		Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Corporate bonds		Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Corporate loans		Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Corporate loans		Sep. 30, 2014 Recurring Other significant observable inputs Level 2 U.S. Treasury securities	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 U.S. Treasury securities	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Obligations of state and political subdivisions	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Obligations of state and political subdivisions	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Certificates of deposit	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Certificates of deposit	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Asset-backed securities	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Asset-backed securities	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Credit Default Swap	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Credit Default Swap	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Cash	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Cash	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Short-term investments	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Short-term investments	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 U.S. government agencies	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 U.S. government agencies	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Municipal bonds	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Municipal bonds	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Preferred stocks	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Preferred stocks	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Common stock	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Common stock	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Mutual funds	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Mutual funds	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Real estate funds	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Real estate funds	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Private equity	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Private equity	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Multi-strategy	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Multi-strategy	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Long/short	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Long/short	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Fund of funds	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Fund of funds	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Event driven	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Event driven	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Long only	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Long only	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Global macro	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Global macro	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Fixed income arbitrage	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Fixed income arbitrage	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Master limited partnerships	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Master limited partnerships	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Fixed income (non-arbitrage)	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Fixed income (non-arbitrage)	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Other	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Other	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Other	Dec. 31, 2013 Recurring Other significant observable inputs Level 2 Other	Sep. 30, 2014 Recurring Other significant observable inputs Level 2 Credit derivatives	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Interest Rate Lock Commitments [Member]	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Credit derivatives	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Credit derivatives	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 U.S. Treasury securities	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 U.S. Treasury securities	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Derivative Financial Instruments, Liabilities [Member]	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Privately held equity securities		Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Privately held equity securities		Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Tax exempt securities	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Tax exempt securities	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 CDO	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 CDO	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 CLO	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 CLO	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Corporate bonds		Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Corporate bonds		Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Corporate loans		Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Corporate loans		Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 U.S. Treasury securities	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 U.S. Treasury securities	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Obligations of state and political subdivisions	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Obligations of state and political subdivisions	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Certificates of deposit	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Certificates of deposit	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Asset-backed securities	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Asset-backed securities	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Credit Default Swap	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Credit Default Swap	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Cash	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Cash	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Short-term investments	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Short-term investments	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 U.S. government agencies	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 U.S. government agencies	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Municipal bonds	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Municipal bonds	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Preferred stocks	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Preferred stocks	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Common stock	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Common stock	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Mutual funds	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Mutual funds	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Real estate funds	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Real estate funds	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Private equity	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Private equity	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Multi-strategy	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Multi-strategy	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Long/short	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Long/short	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Fund of funds	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Fund of funds	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Event driven	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Event driven	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Long only	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Long only	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Global macro	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Global macro	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Fixed income arbitrage	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Fixed income arbitrage	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Master limited partnerships	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Master limited partnerships	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Fixed income (non-arbitrage)	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Fixed income (non-arbitrage)	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Other	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Other	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Other	Dec. 31, 2013 Recurring Significant unobservable inputs Level 3 Other	Sep. 30, 2014 Recurring Significant unobservable inputs Level 3 Credit derivatives	Sep. 30, 2014 Recurring Fair value	Dec. 31, 2013 Recurring Fair value	Sep. 30, 2014 Recurring Fair value Interest Rate Lock Commitments [Member]	Sep. 30, 2014 Recurring Fair value Credit derivatives	Dec. 31, 2013 Recurring Fair value Credit derivatives	Sep. 30, 2014 Recurring Fair value U.S. Treasury securities	Dec. 31, 2013 Recurring Fair value U.S. Treasury securities	Sep. 30, 2014 Recurring Fair value Derivative Financial Instruments, Liabilities [Member]	Sep. 30, 2014 Recurring Fair value Privately held equity securities		Dec. 31, 2013 Recurring Fair value Privately held equity securities		Sep. 30, 2014 Recurring Fair value Tax exempt securities	Dec. 31, 2013 Recurring Fair value Tax exempt securities	Sep. 30, 2014 Recurring Fair value CDO	Dec. 31, 2013 Recurring Fair value CDO	Sep. 30, 2014 Recurring Fair value CLO	Dec. 31, 2013 Recurring Fair value CLO	Sep. 30, 2014 Recurring Fair value Corporate bonds		Dec. 31, 2013 Recurring Fair value Corporate bonds		Sep. 30, 2014 Recurring Fair value Corporate loans		Dec. 31, 2013 Recurring Fair value Corporate loans		Sep. 30, 2014 Recurring Fair value U.S. Treasury securities	Dec. 31, 2013 Recurring Fair value U.S. Treasury securities	Sep. 30, 2014 Recurring Fair value Obligations of state and political subdivisions	Dec. 31, 2013 Recurring Fair value Obligations of state and political subdivisions	Sep. 30, 2014 Recurring Fair value Certificates of deposit	Dec. 31, 2013 Recurring Fair value Certificates of deposit	Sep. 30, 2014 Recurring Fair value Asset-backed securities	Dec. 31, 2013 Recurring Fair value Asset-backed securities	Sep. 30, 2014 Recurring Fair value Credit Default Swap	Dec. 31, 2013 Recurring Fair value Credit Default Swap	Sep. 30, 2014 Recurring Fair value Cash	Dec. 31, 2013 Recurring Fair value Cash	Sep. 30, 2014 Recurring Fair value Short-term investments	Dec. 31, 2013 Recurring Fair value Short-term investments	Sep. 30, 2014 Recurring Fair value U.S. government agencies	Dec. 31, 2013 Recurring Fair value U.S. government agencies	Sep. 30, 2014 Recurring Fair value Municipal bonds	Dec. 31, 2013 Recurring Fair value Municipal bonds	Sep. 30, 2014 Recurring Fair value Preferred stocks	Dec. 31, 2013 Recurring Fair value Preferred stocks	Sep. 30, 2014 Recurring Fair value Common stock	Dec. 31, 2013 Recurring Fair value Common stock	Sep. 30, 2014 Recurring Fair value Mutual funds	Dec. 31, 2013 Recurring Fair value Mutual funds	Sep. 30, 2014 Recurring Fair value Real estate funds	Dec. 31, 2013 Recurring Fair value Real estate funds	Sep. 30, 2014 Recurring Fair value Private equity	Dec. 31, 2013 Recurring Fair value Private equity	Sep. 30, 2014 Recurring Fair value Multi-strategy	Dec. 31, 2013 Recurring Fair value Multi-strategy	Sep. 30, 2014 Recurring Fair value Long/short	Dec. 31, 2013 Recurring Fair value Long/short	Sep. 30, 2014 Recurring Fair value Fund of funds	Dec. 31, 2013 Recurring Fair value Fund of funds	Sep. 30, 2014 Recurring Fair value Event driven	Dec. 31, 2013 Recurring Fair value Event driven	Sep. 30, 2014 Recurring Fair value Long only	Dec. 31, 2013 Recurring Fair value Long only	Sep. 30, 2014 Recurring Fair value Global macro	Dec. 31, 2013 Recurring Fair value Global macro	Sep. 30, 2014 Recurring Fair value Fixed income arbitrage	Dec. 31, 2013 Recurring Fair value Fixed income arbitrage	Sep. 30, 2014 Recurring Fair value Master limited partnerships	Dec. 31, 2013 Recurring Fair value Master limited partnerships	Sep. 30, 2014 Recurring Fair value Fixed income (non-arbitrage)	Dec. 31, 2013 Recurring Fair value Fixed income (non-arbitrage)	Sep. 30, 2014 Recurring Fair value Other	Dec. 31, 2013 Recurring Fair value Other	Sep. 30, 2014 Recurring Fair value Other	Dec. 31, 2013 Recurring Fair value Other	Sep. 30, 2014 Recurring Fair value Credit derivatives	Jun. 30, 2014 Carrying value	Dec. 31, 2013 Carrying value	Sep. 30, 2014 Carrying value Recurring	Dec. 31, 2013 Carrying value Recurring	Sep. 30, 2014 Carrying value Recurring Interest Rate Lock Commitments [Member]	Sep. 30, 2014 Carrying value Recurring Credit derivatives	Dec. 31, 2013 Carrying value Recurring Credit derivatives	Sep. 30, 2014 Carrying value Recurring U.S. Treasury securities	Dec. 31, 2013 Carrying value Recurring U.S. Treasury securities	Sep. 30, 2014 Carrying value Recurring Privately held equity securities		Dec. 31, 2013 Carrying value Recurring Privately held equity securities		Sep. 30, 2014 Carrying value Recurring Tax exempt securities	Dec. 31, 2013 Carrying value Recurring Tax exempt securities	Sep. 30, 2014 Carrying value Recurring CDO	Dec. 31, 2013 Carrying value Recurring CDO	Sep. 30, 2014 Carrying value Recurring CLO	Dec. 31, 2013 Carrying value Recurring CLO	Sep. 30, 2014 Carrying value Recurring Corporate bonds		Dec. 31, 2013 Carrying value Recurring Corporate bonds		Sep. 30, 2014 Carrying value Recurring Corporate loans		Dec. 31, 2013 Carrying value Recurring Corporate loans		Sep. 30, 2014 Carrying value Recurring U.S. Treasury securities	Dec. 31, 2013 Carrying value Recurring U.S. Treasury securities	Sep. 30, 2014 Carrying value Recurring Obligations of state and political subdivisions	Dec. 31, 2013 Carrying value Recurring Obligations of state and political subdivisions	Sep. 30, 2014 Carrying value Recurring Certificates of deposit	Dec. 31, 2013 Carrying value Recurring Certificates of deposit	Sep. 30, 2014 Carrying value Recurring Asset-backed securities	Dec. 31, 2013 Carrying value Recurring Asset-backed securities	Sep. 30, 2014 Carrying value Recurring Cash	Dec. 31, 2013 Carrying value Recurring Cash	Sep. 30, 2014 Carrying value Recurring Short-term investments	Dec. 31, 2013 Carrying value Recurring Short-term investments	Sep. 30, 2014 Carrying value Recurring U.S. government agencies	Dec. 31, 2013 Carrying value Recurring U.S. government agencies	Sep. 30, 2014 Carrying value Recurring Municipal bonds	Dec. 31, 2013 Carrying value Recurring Municipal bonds	Sep. 30, 2014 Carrying value Recurring Preferred stocks	Dec. 31, 2013 Carrying value Recurring Preferred stocks	Sep. 30, 2014 Carrying value Recurring Common stock	Dec. 31, 2013 Carrying value Recurring Common stock	Sep. 30, 2014 Carrying value Recurring Mutual funds	Dec. 31, 2013 Carrying value Recurring Mutual funds	Sep. 30, 2014 Carrying value Recurring Real estate funds	Dec. 31, 2013 Carrying value Recurring Real estate funds	Sep. 30, 2014 Carrying value Recurring Private equity	Dec. 31, 2013 Carrying value Recurring Private equity	Sep. 30, 2014 Carrying value Recurring Multi-strategy	Dec. 31, 2013 Carrying value Recurring Multi-strategy	Sep. 30, 2014 Carrying value Recurring Long/short	Dec. 31, 2013 Carrying value Recurring Long/short	Sep. 30, 2014 Carrying value Recurring Fund of funds	Dec. 31, 2013 Carrying value Recurring Fund of funds	Sep. 30, 2014 Carrying value Recurring Event driven	Dec. 31, 2013 Carrying value Recurring Event driven	Sep. 30, 2014 Carrying value Recurring Long only	Dec. 31, 2013 Carrying value Recurring Long only	Sep. 30, 2014 Carrying value Recurring Global macro	Dec. 31, 2013 Carrying value Recurring Global macro	Sep. 30, 2014 Carrying value Recurring Fixed income arbitrage	Dec. 31, 2013 Carrying value Recurring Fixed income arbitrage	Sep. 30, 2014 Carrying value Recurring Master limited partnerships	Dec. 31, 2013 Carrying value Recurring Master limited partnerships	Sep. 30, 2014 Carrying value Recurring Fixed income (non-arbitrage)	Dec. 31, 2013 Carrying value Recurring Fixed income (non-arbitrage)	Sep. 30, 2014 Carrying value Recurring Other	Dec. 31, 2013 Carrying value Recurring Other	Sep. 30, 2014 Carrying value Recurring Other	Dec. 31, 2013 Carrying value Recurring Other	Jun. 30, 2014 Fair value	Dec. 31, 2013 Fair value	Sep. 30, 2014 CLO Recurring Quoted prices in active markets Level 1 Privately held equity securities	Sep. 30, 2014 CLO Recurring Quoted prices in active markets Level 1 Corporate loans	Sep. 30, 2014 CLO Recurring Other significant observable inputs Level 2 Privately held equity securities	Sep. 30, 2014 CLO Recurring Other significant observable inputs Level 2 Corporate loans	Dec. 31, 2013 CLO Recurring Other significant observable inputs Level 2 Corporate loans		Sep. 30, 2014 CLO Recurring Significant unobservable inputs Level 3 Privately held equity securities	Dec. 31, 2013 CLO Recurring Significant unobservable inputs Level 3 Privately held equity securities		Dec. 31, 2013 CLO Recurring Significant unobservable inputs Level 3 Corporate bonds		Sep. 30, 2014 CLO Recurring Significant unobservable inputs Level 3 Corporate loans	Dec. 31, 2013 CLO Recurring Significant unobservable inputs Level 3 Corporate loans		Sep. 30, 2014 CLO Recurring Fair value Privately held equity securities		Sep. 30, 2014 CLO Recurring Fair value Corporate loans	Sep. 30, 2014 CLO Carrying value Recurring Privately held equity securities		Sep. 30, 2014 CLO Carrying value Recurring Corporate loans	Sep. 30, 2014 Credit Default Swap	Sep. 30, 2014 Credit Default Swap Fair value	Sep. 30, 2014 Derivative Financial Instruments, Liabilities [Member] Fair value	Dec. 31, 2013 Credit derivatives	Sep. 30, 2014 Credit derivatives Fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading investments:	$ 38,837	$ 35,991				$ 0	$ 0							$ 0	[1]	$ 0	[1]	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	[2]	$ 0	[2]																																																								$ 32,697	$ 30,759							$ 0	[1]	$ 0	[1]	$ 24,740	$ 30,707	$ 0	$ 0	$ 0	$ 0	$ 0	[2]	$ 0	[2]																																																								$ 28,790	$ 24,598							$ 4,171	[1]	$ 5,306	[1]	$ 3,520	$ 273	$ 230	$ 520	$ 1,005	$ 825	$ 18,490	[2]	$ 17,674	[2]																																																								$ 61,487	$ 55,357							$ 4,171	[1]	$ 5,306	[1]	$ 28,260	$ 30,980	$ 230	$ 520	$ 1,005	$ 825	$ 18,490	[2]	$ 17,674	[2]																																																								$ 38,837	$ 35,991	$ 61,487	$ 55,357						$ 4,171	[1]	$ 5,306	[1]	$ 28,260	$ 30,980	$ 230	$ 520	$ 1,005	$ 825	$ 18,490	[2]	$ 17,674	[2]																																																						$ 35,991	$ 0		$ 2,786				$ 1,374	$ 1,692	[1]	$ 17,674	[2]				$ 4,160	[1]		$ 4,160	[1]
Loans Held-for-sale, Fair Value Disclosure					32,109																							0																																																																													32,109																																																																													0																																																																													32,109
trading investments						0	0																																																																												27,526	30,707																																																																												28,790	24,598																																																																												56,316	55,305																																																																														56,316	55,305
Corporate loans																												0	[3]	0	[3]																																																																										160,137	[3]	1,438,699	[3]																																																																										61,883	[3]	30,543	[3]																																																																										222,020	[3]	1,469,242	[3]																																																					40,260																						222,020	[3]	1,469,242	[3]																																																	32,714	48,212		0		1,128,011	1,267,612	[3]						388,043	30,543	[3]			1,516,054			1,516,054
Available for sale securities:						7,210	7,751																	0		0						7,210	7,751	0	0	0	0	0	0																																												9,854	10,012																	6,444		5,596						0	0	3,245	4,238	100	100	65	78																																												0	0																	0		0						0	0	0	0	0	0	0	0																																												17,064	17,763																	6,444		5,596						7,210	7,751	3,245	4,238	100	100	65	78																																												17,064	17,763	17,064	17,763																6,444		5,596						7,210	7,751	3,245	4,238	100	100	65	78																																										17,763
Derivative assets		52				0	0	0	0	0																																																																									5,171	52	326	4,845	52																																																																									0	0	0	0	0																																																																									5,171	52	326	4,845	52																																																																											5,171	52	326	4,845	52																																																																																											4,734
Separate Account Assets:	4,461,601	4,625,099				359,297	513,074																	0		0						3,015	17,634					0	0			7,435	26,129	149,642	171,927	0	0	0	0	4,060	1,018	109,370	100,630	85,775	195,736	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0		525,872	278,624																	8,599		18,116						0	0					108	8,113			0	0	0	0	1,185	1,436	6,754	8,014	0	0	0	0	148,139	0	0	0	0	0	67,831	66,615	23,190	19,115	3,117	2,509	0	0	34,118	34,787	13,158	13,157	0	0	215,525	102,394	4,010	4,117	0	0	138	251		3,576,432	3,833,401																	0		0						0	0					0	0			0	0	0	0	0	0	0	0	0	0	0	0	0	0	2,380,324	2,719,387	64	138	754,315	682,751	78,760	84,315	187,938	191,423	85,825	86,724	20,536	20,305	6,800	8,245	7,011	8,669	54,037	28,814	761	2,557	61	73	0	0		4,461,601	4,625,099																	8,599		18,116						3,015	17,634					108	8,113			7,435	26,129	149,642	171,927	1,185	1,436	6,754	8,014	4,060	1,018	109,370	100,630	233,914	195,736	2,380,324	2,719,387	64	138	822,146	749,366	101,950	103,430	191,055	193,932	85,825	86,724	54,654	55,092	19,958	21,402	7,011	8,669	269,562	131,208	4,771	6,674	61	73	138	251		4,461,601	4,625,099	4,461,601	4,625,099																8,599		18,116						3,015	17,634					108	8,113	7,435	26,129	149,642	171,927	1,185	1,436	6,754	8,014	4,060	1,018	109,370	100,630	233,914	195,736	2,380,324	2,719,387	64	138	822,146	749,366	101,950	103,430	191,055	193,932	85,825	86,724	54,654	55,092	19,958	21,402	7,011	8,669	269,562	131,208	4,771	6,674	61	73	138	251		4,625,099
Total			184	274		366,507	520,825																																																																												1,888,680	1,758,094																																																																												4,055,148	3,888,542																																																																												6,310,335	6,167,461																																																																												6,732,568	6,562,834	6,310,335	6,167,461																																																																								6,732,568	6,570,786
Debt Securities:											19,234	18,493																																																																												0	0																																																																												0	0																																																																												19,234	18,493																																																																								360,609						19,234	18,493																																																																			434,655	376,250
Derivative Liabilities:	460	598											0																											0	0																																									0								460																											0	598																																									460								0																											0	0																																									0								460																											0	598																																									460	460	598					598																																																																						598																						0	460	598	460
Total						$ 19,234	$ 18,493																																																																												$ 460	$ 598																																																																												$ 0	$ 0																																																																												$ 19,694	$ 19,091																																																																												$ 6,369,608	$ 6,188,598	$ 19,694	$ 19,091																																																																								$ 6,378,914	$ 6,204,239

[1] Includes $1,692 related to CLOs classified in Level 3.

[2] Includes $17,674 related to CLOs classified in Level 3.

[3] Includes $1,267,612 and $30,543 classified in Level 2 and Level 3, respectively, related to CLOs.