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Segment Information (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2013 | Mar. 31, 2012 | Dec. 31, 2012
Results of operations and selected financial information |  |  |
Net interest income (expense) | $ 40,256 | $ 40,817 |
Noninterest income | 22,535 | 23,437 |
Income before taxes | 20,547 | 22,044 |
Total assets | 5,773,926 | 5,737,994 | 6,022,250
Metropolitan Banks [Member] |  |  |
Results of operations and selected financial information |  |  |
Net interest income (expense) | 14,011 | 13,163 |
Noninterest income | 3,190 | 2,681 |
Income before taxes | 8,937 | 8,432 |
Total assets | 1,926,511 | 1,809,836 | 1,996,539
Community Banks [Member] |  |  |
Results of operations and selected financial information |  |  |
Net interest income (expense) | 25,144 | 26,631 |
Noninterest income | 11,545 | 10,135 |
Income before taxes | 14,077 | 15,255 |
Total assets | 3,627,011 | 3,760,533 | 3,801,653
Other Financial Services [Member] |  |  |
Results of operations and selected financial information |  |  |
Net interest income (expense) | 1,565 | 1,713 |
Noninterest income | 6,902 | 9,864 |
Income before taxes | 3,237 | 6,387 |
Total assets | 109,887 | 139,114 | 186,473
Executive, Operations and Support [Member] |  |  |
Results of operations and selected financial information |  |  |
Net interest income (expense) | (464) | (690) |
Noninterest income | 14,749 | 15,381 |
Income before taxes | 8,094 | 6,533 |
Total assets | 690,318 | 590,597 | 602,342
Eliminations [Member] |  |  |
Results of operations and selected financial information |  |  |
Noninterest income | (13,851) | (14,624) |
Income before taxes | (13,798) | (14,563) |
Total assets | $ (579,801) | $ (562,086) | $ (564,757)

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- Definition The total amount of noninterest income which may be derived from: (1) fees and commissions; (2) premiums earned; (3) insurance policy charges; (4) the sale or disposal of assets; and (5) other sources not otherwise specified. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 13 -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Section 563c.102 -Paragraph 13 -Chapter V -Subsection II -LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy. It will be removed from future versions of this taxonomy. + Details
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