XML 34 R28.htm IDEA: XBRL DOCUMENT
v2.4.0.6

INVESTMENT SECURITIES (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2013
INVESTMENT SECURITIES |
Summary of available for sale and held to maturity investment securities |
|  |  |  | Gross |  | Gross |  | Estimated |
|  | Amortized |  | unrealized |  | unrealized |  | fair |
|  | cost |  | gains |  | losses |  | value |
|  | (Dollars in thousands) |
March 31, 2013 |  |  |  |  |  |  |  |  |
Available for Sale |  |  |  |  |  |  |  |  |
U.S. Government sponsored entities debt securities |  | $ | 207,755 |  | $ | 2,343 |  | $ | — |  | $ | 210,098 |
States and political subdivisions debt securities |  | 193,648 |  | 2,022 |  | (2,044 | ) | 193,626 |
U.S. Government sponsored entities mortgage-backed securities |  | 981,911 |  | 15,876 |  | (2,781 | ) | 995,006 |
Corporate securities |  | 125,117 |  | 2,479 |  | (61 | ) | 127,535 |
Non-agency collateralized mortgage obligations |  | 9,965 |  | 19 |  | — |  | 9,984 |
Other |  | 751 |  | 65 |  | — |  | 816 |
Total |  | $ | 1,519,147 |  | $ | 22,804 |  | $ | (4,886 | ) | $ | 1,537,065 |
Held to Maturity |  |  |  |  |  |  |  |  |
U.S. Government sponsored entities mortgage-backed securities |  | $ | 159,363 |  | $ | 452 |  | $ | (332 | ) | $ | 159,483 |
December 31, 2012 |  |  |  |  |  |  |  |  |
Available for Sale |  |  |  |  |  |  |  |  |
U.S. Government sponsored entities debt securities |  | $ | 278,198 |  | $ | 2,741 |  | $ | — |  | $ | 280,939 |
States and political subdivisions debt securities |  | 184,274 |  | 2,831 |  | (1,194 | ) | 185,911 |
U.S. Government sponsored entities mortgage-backed securities |  | 925,018 |  | 17,548 |  | (1,523 | ) | 941,043 |
Corporate securities |  | 125,649 |  | 2,360 |  | (63 | ) | 127,946 |
Other |  | 866 |  | 40 |  | — |  | 906 |
Total |  | $ | 1,514,005 |  | $ | 25,520 |  | $ | (2,780 | ) | $ | 1,536,745 |
Held to Maturity |  |  |  |  |  |  |  |  |
U.S. Government sponsored entities mortgage-backed securities |  | $ | 161,848 |  | $ | 695 |  | $ | (15 | ) | $ | 162,528 |
Schedule of amortized cost and estimated fair value of investment securities by contractual maturity |
|  | March 31, 2013 |
|  | Amortized Cost |  | Estimated Fair Value |
|  | (Dollars in thousands) |
Available for Sale |  |  |  |  |
Due in one year or less |  | $ | 110,289 |  | $ | 110,667 |
Due after one year through five years |  | 176,722 |  | 181,273 |
Due after five years through ten years |  | 96,482 |  | 96,745 |
Due after ten years |  | 143,027 |  | 142,574 |
Mortage-backed securities |  | 991,876 |  | 1,004,990 |
Other |  | 751 |  | 816 |
Total |  | $ | 1,519,147 |  | $ | 1,537,065 |
Held to Maturity |  |  |  |  |
Mortage-backed securities |  | $ | 159,363 |  | $ | 159,483 |
Schedule of investment securities in an unrealized loss position |
|  | Less than 12 months |  | 12 months or longer |  | Total |
|  |  |  | Unrealized |  |  |  | Unrealized |  |  |  | Unrealized |
Description of Securities |  | Fair Value |  | Losses |  | Fair Value |  | Losses |  | Fair Value |  | Losses |
|  | (Dollars in thousands) |
At March 31, 2013: |  |  |  |  |  |  |  |  |  |  |  |  |
States and political subdivisions debt securities |  | $ | 106,117 |  | $ | (2,044 | ) | $ | — |  | $ | — |  | $ | 106,117 |  | $ | (2,044 | )
U.S. Government sponsored entities mortgage-backed securities |  | 212,650 |  | (3,113 | ) | — |  | — |  | 212,650 |  | (3,113 | )
Corporate securities |  | 23,516 |  | (61 | ) | — |  | — |  | 23,516 |  | (61 | )
Total temporarily impaired securities |  | $ | 342,283 |  | $ | (5,218 | ) | $ | — |  | $ | — |  | $ | 342,283 |  | $ | (5,218 | )
At December 31, 2012: |  |  |  |  |  |  |  |  |  |  |  |  |
States and political subdivisions |  | $ | 73,128 |  | $ | (1,194 | ) | $ | — |  | $ | — |  | $ | 73,128 |  | $ | (1,194 | )
U.S. Government sponsored entities mortgage-backed securities |  | 206,981 |  | (1,538 | ) | — |  | — |  | 206,981 |  | (1,538 | )
Corporate securities |  | 23,205 |  | (63 | ) |  |  |  |  | 23,205 |  | (63 | )
Total temporarily impaired securities |  | $ | 303,314 |  | $ | (2,795 | ) | $ | — |  | $ | — |  | $ | 303,314 |  | $ | (2,795 | )

X
- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details
Name: | us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27290-111563 + Details
Name: | us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the summary of investment holdings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-12C) -URI http://asc.fasb.org/extlink&oid=6955306&loc=d3e611225-123010 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12C -Article 12 + Details
Name: | us-gaap_SummaryInvestmentHoldingsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration