XML 13 R53.htm IDEA: XBRL DOCUMENT  v2.3.0.11
Fair Value of Financial Instruments (Schedule of Valuation of Financial Instruments by Pricing Observability Levels) (Details) (USD $)
In Thousands
Jun. 30, 2011
Dec. 31, 2010
Cash equivalents $ 7,992 $ 15,675
Trading securities owned 603,964 444,170
Available-for-sale securities 1,074,114 1,012,714
Investments 167,495 178,936
Total Assets 1,853,565 1,651,495
Trading securities sold, but not yet purchased 291,465 200,140
Derivative contracts, Liabilities   9,259 [1]
Derivative contracts, Liabilities 11,857 [1]  
Total Liabilities 324,963 229,334
Auction Rate Securities [Member] | Auction Rate Equity Securities [Member]
   
Investments 66,616 76,826
Auction Rate Securities [Member] | Auction Rate Equity Securities [Member] | Level 1 [Member]
   
Investments 0 0
Auction Rate Securities [Member] | Auction Rate Equity Securities [Member] | Level 2 [Member]
   
Investments 0 0
Auction Rate Securities [Member] | Auction Rate Equity Securities [Member] | Level 3 [Member]
   
Investments 66,616 76,826
Auction Rate Securities [Member] | Auction Rate Municipal Securities [Member]
   
Investments 7,117 6,533
Auction Rate Securities [Member] | Auction Rate Municipal Securities [Member] | Level 1 [Member]
   
Investments 0 0
Auction Rate Securities [Member] | Auction Rate Municipal Securities [Member] | Level 2 [Member]
   
Investments 0 0
Auction Rate Securities [Member] | Auction Rate Municipal Securities [Member] | Level 3 [Member]
   
Investments 7,117 6,533
Corporate Securities [Member] | Corporate Fixed Income Securities [Member]
   
Trading securities owned 290,673 221,145
Trading securities sold, but not yet purchased 156,969 61,026
Corporate Securities [Member] | Corporate Fixed Income Securities [Member] | Level 1 [Member]
   
Trading securities owned 70,694 47,001
Trading securities sold, but not yet purchased 72,933 18,815
Corporate Securities [Member] | Corporate Fixed Income Securities [Member] | Level 2 [Member]
   
Trading securities owned 201,637 133,901
Trading securities sold, but not yet purchased 81,601 37,526
Corporate Securities [Member] | Corporate Fixed Income Securities [Member] | Level 3 [Member]
   
Trading securities owned 18,342 40,243
Trading securities sold, but not yet purchased 2,435 4,685
Corporate Securities [Member] | Auction Rate Equity Securities [Member]
   
Trading securities owned 40,789 46,877
Trading securities sold, but not yet purchased 21,187 6,800
Corporate Securities [Member] | Auction Rate Equity Securities [Member] | Level 1 [Member]
   
Trading securities owned 40,467 46,395
Trading securities sold, but not yet purchased 21,147 6,780
Corporate Securities [Member] | Auction Rate Equity Securities [Member] | Level 2 [Member]
   
Trading securities owned 322 482
Trading securities sold, but not yet purchased 40 20
Corporate Securities [Member] | Auction Rate Equity Securities [Member] | Level 3 [Member]
   
Trading securities owned 0 0
Trading securities sold, but not yet purchased 0 0
U.S. Government Agency Securities [Member]
   
Trading securities owned 141,510 86,882
Available-for-sale securities   25,030
Trading securities sold, but not yet purchased 6,380 664
U.S. Government Agency Securities [Member] | Level 1 [Member]
   
Trading securities owned 0 0
Available-for-sale securities   0
Trading securities sold, but not yet purchased 0 0
U.S. Government Agency Securities [Member] | Level 2 [Member]
   
Trading securities owned 141,510 86,882
Available-for-sale securities   25,030
Trading securities sold, but not yet purchased 6,380 664
U.S. Government Agency Securities [Member] | Level 3 [Member]
   
Trading securities owned 0 0
Available-for-sale securities   0
Trading securities sold, but not yet purchased 0 0
U.S. Government Securities [Member]
   
Trading securities owned 25,975 9,038
Investments 5,810 8,751
Trading securities sold, but not yet purchased 106,666 131,561
U.S. Government Securities [Member] | Level 1 [Member]
   
Trading securities owned 25,975 9,038
Investments 5,810 8,751
Trading securities sold, but not yet purchased 106,666 131,561
U.S. Government Securities [Member] | Level 2 [Member]
   
Trading securities owned 0 0
Investments 0 0
Trading securities sold, but not yet purchased 0 0
U.S. Government Securities [Member] | Level 3 [Member]
   
Trading securities owned 0 0
Investments 0 0
Trading securities sold, but not yet purchased 0 0
State and Municipal Securities [Member]
   
Trading securities owned 105,017 80,228
Available-for-sale securities 60,225 26,343
Trading securities sold, but not yet purchased 263 89
State and Municipal Securities [Member] | Level 1 [Member]
   
Trading securities owned 0 0
Available-for-sale securities 0 0
Trading securities sold, but not yet purchased 0 0
State and Municipal Securities [Member] | Level 2 [Member]
   
Trading securities owned 105,017 80,228
Available-for-sale securities 15,547 14,907
Trading securities sold, but not yet purchased 263 89
State and Municipal Securities [Member] | Level 3 [Member]
   
Trading securities owned 0 0
Available-for-sale securities 44,678 11,436
Trading securities sold, but not yet purchased 0 0
Corporate Fixed Income Securities [Member]
   
Available-for-sale securities 238,995 154,901
Corporate Fixed Income Securities [Member] | Level 1 [Member]
   
Available-for-sale securities 128,812 34,897
Corporate Fixed Income Securities [Member] | Level 2 [Member]
   
Available-for-sale securities 110,183 120,004
Corporate Fixed Income Securities [Member] | Level 3 [Member]
   
Available-for-sale securities 0 0
Agency [Member]
   
Available-for-sale securities 572,650 697,163
Agency [Member] | Level 1 [Member]
   
Available-for-sale securities 0 0
Agency [Member] | Level 2 [Member]
   
Available-for-sale securities 572,650 697,163
Agency [Member] | Level 3 [Member]
   
Available-for-sale securities 0 0
Commercial [Member]
   
Available-for-sale securities 150,147 67,996
Commercial [Member] | Level 1 [Member]
   
Available-for-sale securities 0 0
Commercial [Member] | Level 2 [Member]
   
Available-for-sale securities 150,147 67,996
Commercial [Member] | Level 3 [Member]
   
Available-for-sale securities 0 0
Non-Agency [Member]
   
Available-for-sale securities 24,308 29,273
Non-Agency [Member] | Level 1 [Member]
   
Available-for-sale securities 0 0
Non-Agency [Member] | Level 2 [Member]
   
Available-for-sale securities 24,308 29,273
Non-Agency [Member] | Level 3 [Member]
   
Available-for-sale securities 0 0
Asset-backed Securities [Member]
   
Available-for-sale securities 27,789 12,008
Asset-backed Securities [Member] | Level 1 [Member]
   
Available-for-sale securities 0 0
Asset-backed Securities [Member] | Level 2 [Member]
   
Available-for-sale securities 27,789 12,008
Asset-backed Securities [Member] | Level 3 [Member]
   
Available-for-sale securities 0 0
Corporate Equity Securities [Member]
   
Investments 5,313 3,335
Corporate Equity Securities [Member] | Level 1 [Member]
   
Investments 4,896 3,335
Corporate Equity Securities [Member] | Level 2 [Member]
   
Investments 417 0
Corporate Equity Securities [Member] | Level 3 [Member]
   
Investments 0 0
Mutual Funds [Member]
   
Investments 35,195 32,193
Mutual Funds [Member] | Level 1 [Member]
   
Investments 35,195 32,193
Mutual Funds [Member] | Level 2 [Member]
   
Investments 0 0
Mutual Funds [Member] | Level 3 [Member]
   
Investments 0 0
Other [Member]
   
Investments 47,444 51,298
Other [Member] | Level 1 [Member]
   
Investments 6,826 10,489
Other [Member] | Level 2 [Member]
   
Investments 1,660 2,307
Other [Member] | Level 3 [Member]
   
Investments 38,958 38,502
Securities Sold, Not yet Purchased [Member]
   
Trading securities sold, but not yet purchased 21,641 [2] 19,935 [2]
Securities Sold, Not yet Purchased [Member] | Level 1 [Member]
   
Trading securities sold, but not yet purchased 21,641 [2] 19,935 [2]
Securities Sold, Not yet Purchased [Member] | Level 2 [Member]
   
Trading securities sold, but not yet purchased 0 [2] 0 [2]
Securities Sold, Not yet Purchased [Member] | Level 3 [Member]
   
Trading securities sold, but not yet purchased 0 [2] 0 [2]
Level 1 [Member]
   
Cash equivalents 7,992 15,675
Trading securities owned 137,136 102,434
Available-for-sale securities 128,812 34,897
Investments 52,727 54,768
Total Assets 326,667 207,774
Trading securities sold, but not yet purchased 200,746 157,156
Derivative contracts, Liabilities   0 [1]
Derivative contracts, Liabilities 0 [1]  
Total Liabilities 222,387 177,091
Level 2 [Member]
   
Cash equivalents 0 0
Trading securities owned 448,486 301,493
Available-for-sale securities 900,624 966,381
Investments 2,077 2,307
Total Assets 1,351,187 1,270,181
Trading securities sold, but not yet purchased 88,284 38,299
Derivative contracts, Liabilities   9,259 [1]
Derivative contracts, Liabilities 11,857 [1]  
Total Liabilities 100,141 47,558
Level 3 [Member]
   
Cash equivalents 0 0
Trading securities owned 18,342 40,243
Available-for-sale securities 44,678 11,436
Investments 112,691 121,861
Total Assets 175,711 173,540
Trading securities sold, but not yet purchased 2,435 4,685
Derivative contracts, Liabilities   0 [1]
Derivative contracts, Liabilities 0 [1]  
Total Liabilities $ 2,435 $ 4,685
[1] Included in accounts payable and accrued expenses in the consolidated statements of financial condition.
[2] Included in other liabilities in the consolidated statements of financial condition.