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Accumulated Other Comprehensive Income (Loss), Net of Tax (Tables) | 12 Months Ended
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Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Schedule Of Accumulated Other Comprehensive Income (Loss), Net Of Tax | Components of Accumulated other comprehensive income (loss) attributable to SEI Investments shareholders consisted of:
|  | Foreign Currency Translation Adjustments |  | Unrealized Holding Gains (Losses) on Investments |  | Accumulated Other Comprehensive Income (Loss)
Balance, January 1, 2012 |  | $ | (674 | ) |  | $ | 2,574 |  |  | $ | 1,900 |
Other comprehensive income before reclassifications |  | 4,084 |  |  | 341 |  |  | 4,425 |
Amounts reclassified from accumulated other comprehensive income |  | — |  |  | (86 | ) |  | (86 | )
Net current-period other comprehensive income |  | 4,084 |  |  | 255 |  |  | 4,339 |
Balance, December 31, 2012 |  | $ | 3,410 |  |  | $ | 2,829 |  |  | $ | 6,239 |
Other comprehensive loss before reclassifications |  | (3,309 | ) |  | (1,149 | ) |  | (4,458 | )
Amounts reclassified from accumulated other comprehensive income |  | — |  |  | (294 | ) |  | (294 | )
Net current-period other comprehensive loss |  | (3,309 | ) |  | (1,443 | ) |  | (4,752 | )
Balance, December 31, 2013 |  | $ | 101 |  |  | $ | 1,386 |  |  | $ | 1,487 |
Other comprehensive loss before reclassifications |  | (10,189 | ) |  | 441 |  |  | (9,748 | )
Amounts reclassified from accumulated other comprehensive income |  | — |  |  | (634 | ) |  | (634 | )
Net current-period other comprehensive loss |  | (10,189 | ) |  | (193 | ) |  | (10,382 | )
Balance, December 31, 2014 |  | $ | (10,088 | ) |  | $ | 1,193 |  |  | $ | (8,895 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 + Details
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