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Investments
 3 Months Ended
Mar. 31, 2012
Investments [Abstract]  
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]
Investments
A summary of investment securities follows:
 
Amortized
Cost
 
Unrealized
 
Fair
Value
Gains
 
Losses
 
(In thousands)
At March 31, 2012:
 
 
 
 
 
 
 
Available for sale securities at fair value:
 
 
 
 
 
 
 
U.S. government and agencies
$
12,687

 
$
1

 
$
(22
)
 
$
12,666

Government-sponsored entities
348,124

 
1,282

 
(273
)
 
349,133

Corporate bonds
4,966

 
—

 
(16
)
 
4,950

Municipal bonds
195,382

 
3,718

 
(132
)
 
198,968

Mortgage-backed securities (1)
252,855

 
6,687

 
(215
)
 
259,327

Other
455

 
129

 
(14
)
 
570

Total
$
814,469

 
$
11,817

 
$
(672
)
 
$
825,614

 
 
 
 
 
 
 
 
At December 31, 2011:
 
 
 
 
 
 
 
Available for sale securities at fair value:
 
 
 
 
 
 
 
U.S. government and agencies
$
4,603

 
$
20

 
$
(21
)
 
$
4,602

Government-sponsored entities
378,055

 
1,458

 
(90
)
 
379,423

Corporate bonds
4,953

 
—

 
(41
)
 
4,912

Municipal bonds
196,961

 
3,733

 
(19
)
 
200,675

Mortgage-backed securities (1)
248,329

 
6,403

 
(388
)
 
254,344

Other
474

 
95

 
(29
)
 
540

Total
$
833,375

 
$
11,709

 
$
(588
)
 
$
844,496

___________________
(1)
 All mortgage-backed securities are guaranteed by U.S. government agencies or Government-sponsored entities.
The following table sets forth the maturities of investment securities available for sale, based on contractual maturity, as of March 31, 2012. Certain securities are callable before their final maturity. Additionally, certain securities (such as mortgage-backed securities) are shown within the table below based on their final (contractual) maturity, but, due to prepayments and amortization, are expected to have shorter lives.
 
Available for Sale Securities
Amortized
cost
 
Fair
value
(In thousands)
Within one year
$
27,982

 
$
28,224

After one, but within five years
448,591

 
452,732

After five, but within ten years
101,210

 
101,925

Greater than ten years
236,686

 
242,733

Total
$
814,469

 
$
825,614

The following table presents the proceeds from sales, gross realized gains and gross realized losses for securities available for sale that were sold during the following periods:
 
For the three months
ended March 31,
2012
 
2011
(In thousands)
Proceeds from sales
$
4,359

 
$
82,102

Realized gains
16

 
656

Realized losses
(3
)
 
(237
)
The following tables set forth information regarding securities at March 31, 2012 having temporary impairment, due to the fair values having declined below the amortized cost of the individual securities, and the time period that the investments have been temporarily impaired.
 
Less than 12 months
 
12 months or longer
 
Total
  
Fair
value
 
Unrealized
losses
 
Fair
value
 
Unrealized
losses
 
Fair
value
 
Unrealized
losses
 
# of
securities
Available for sale securities
(In thousands)
U.S. government and agencies
$
3,204

 
$
(22
)
 
$
—

 
$
—

 
$
3,204

 
$
(22
)
 
2

Government-sponsored entities
66,893

 
(273
)
 
—

 
—

 
66,893

 
(273
)
 
9

Corporate bonds
4,950

 
(16
)
 
—

 
—

 
4,950

 
(16
)
 
1

Municipal bonds
11,807

 
(132
)
 
—

 
—

 
11,807

 
(132
)
 
10

Mortgage-backed securities
39,262

 
(193
)
 
2,982

 
(22
)
 
42,244

 
(215
)
 
9

Other
69

 
(12
)
 
17

 
(2
)
 
86

 
(14
)
 
13

Total
$
126,185

 
$
(648
)
 
$
2,999

 
$
(24
)
 
$
129,184

 
$
(672
)
 
44

The U.S. government and agencies securities, government-sponsored entities securities, and mortgage-backed securities in the table above had a Standard and Poor’s credit rating of AA+. The one corporate bond in the table above had a Moody’s credit rating of Baa3. The municipal bonds in the table above had Moody’s credit ratings of at least Aa2 or a Standard and Poor's credit rating of at least AA+. The other securities consisted of equity securities.
At March 31, 2012, the amount of investment securities in an unrealized loss position greater than 12 months as well as in total was not significant and was primarily due to movements in interest rates. The Company has no intent to sell any securities in an unrealized loss position at March 31, 2012 and it is not more likely than not that the Company would be forced to sell any of these securities prior to the full recovery of all unrealized loss amounts.
Cost method investments, which are included in other assets, can be temporarily impaired when the fair values decline below the amortized costs of the individual investments. There were no cost method investments with unrealized losses at March 31, 2012. The Company invests primarily in low income housing partnerships which generate tax credits. The Company also holds partnership interests in venture capital funds formed to provide financing to small businesses and to promote community development. The Company had $22.1 million and $22.3 million in cost method investments included in other assets at March 31, 2012 and December 31, 2011, respectively.