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Investment Securities (Tables)
 12 Months Ended
Dec. 31, 2012
Investments, Debt and Equity Securities [Abstract]  
Schedule of Investment Securities [Table Text Block]
The amortized cost of investment securities and their fair values are summarized as follows:
 
Par Value
 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Fair
Value
 
(Dollars in thousands)
At December 31, 2012:
 
 
 
 
 
 
 
 
 
Available-for-sale investment securities:
 
 
 
 
 
 
 
 
 
U.S. Treasury securities
$
17,000

 
$
16,964

 
$
405

 
$
(6
)
 
$
17,363

Government sponsored entity (GSE) securities
45,000

 
45,628

 
848

 
(8
)
 
46,468

Collateralized mortgage obligations
67,902

 
63,367

 
3,735

 
(36
)
 
67,066

Commercial mortgage-backed securities
44,267

 
45,178

 
1,251

 
—

 
46,429

GSE residential mortgage-backed securities
2,224

 
2,400

 
—

 
(32
)
 
2,368

Asset backed securities
4,182

 
3,876

 
177

 
—

 
4,053

Pooled trust preferred securities
24,508

 
22,409

 
—

 
(2,867
)
 
19,542

GSE preferred stock
200

 
—

 
1

 
—

 
1

Total available-for-sale investment securities
$
205,283

 
$
199,822

 
$
6,417

 
$
(2,949
)
 
$
203,290

 
 
 
 
 
 
 
 
 
 
Held-to-maturity investment securities:
 
 
 
 
 
 
 
 
 
Asset backed securities
$
6,446

 
$
6,578

 
$
219

 
$
—

 
$
6,797

Municipal securities
8,880

 
8,880

 
45

 
—

 
8,925

Total held-to-maturity investment securities
$
15,326

 
$
15,458

 
$
264

 
$
—

 
$
15,722


 
Par Value
 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Fair
Value
 
(Dollars in thousands)
At December 31, 2011:
 
 
 
 
 
 
 
 
 
Available-for-sale investment securities:
 
 
 
 
 
 
 
 
 
U.S. Treasury securities
$
15,000

 
$
14,967

 
$
447

 
$
—

 
$
15,414

Government sponsored entity (GSE) securities
46,800

 
46,967

 
1,415

 
—

 
48,382

Corporate bonds
5,420

 
5,022

 
9

 
(4
)
 
5,027

Collateralized mortgage obligations
79,006

 
71,073

 
1,178

 
(1,367
)
 
70,884

Commercial mortgage-backed securities
72,885

 
74,664

 
1,520

 
(66
)
 
76,118

Pooled trust preferred securities
27,398

 
24,804

 
—

 
(6,249
)
 
18,555

GSE preferred stock
200

 
—

 
1

 
—

 
1

Total available-for-sale investment securities
$
246,709

 
$
237,497

 
$
4,570

 
$
(7,686
)
 
$
234,381

 
 
 
 
 
 
 
 
 
 
Held-to-maturity investment securities:
 
 
 
 
 
 
 
 
 
Asset backed securities
$
8,201

 
$
8,461

 
$
285

 
$
—

 
$
8,746

Municipal securities
7,910

 
7,910

 
47

 
—

 
7,957

Total held-to-maturity investment securities
$
16,111

 
$
16,371

 
$
332

 
$
—

 
$
16,703
Schedule of Unrealized Loss on Investments [Table Text Block]
Investment securities with unrealized losses at December 31, 2012 and 2011, aggregated by investment category and length of time that individual investment securities have been in a continuous unrealized loss position, are presented in the following tables:
 
December 31, 2012
 
Less than 12 Months
 
12 Months or More
 
Total
 
Fair
Value
 
Unrealized
Losses
 
Fair
Value
 
Unrealized
Losses
 
Fair
Value
 
Unrealized
Losses
 
(Dollars in thousands)
U.S. Treasury securities
$
4,984

 
$
(6
)
 
$
—

 
$
—

 
$
4,984

 
$
(6
)
GSE securities
2,468

 
(8
)
 
—

 
—

 
2,468

 
(8
)
Collateralized mortgage obligations
6,705

 
(36
)
 
—

 
—

 
6,705

 
(36
)
GSE residential mortgage-backed securities
2,368

 
(32
)
 
—

 
—

 
2,368

 
(32
)
Pooled trust preferred securities
—

 
—

 
19,542

 
(2,867
)
 
19,542

 
(2,867
)
 
$
16,525

 
$
(82
)
 
$
19,542

 
$
(2,867
)
 
$
36,067

 
$
(2,949
)

 
December 31, 2011
 
Less than 12 Months
 
12 Months or More
 
Total
 
Fair
Value
 
Unrealized
Losses
 
Fair
Value
 
Unrealized
Losses
 
Fair
Value
 
Unrealized
Losses
 
(Dollars in thousands)
Corporate bonds
$
3,969

 
$
(4
)
 
$
—

 
$
—

 
$
3,969

 
$
(4
)
Collateralized mortgage obligations
34,504

 
(983
)
 
3,428

 
(384
)
 
37,932

 
(1,367
)
Commercial mortgage-backed securities
89

 
(1
)
 
4,154

 
(65
)
 
4,243

 
(66
)
Pooled trust preferred securities
—

 
—

 
18,555

 
(6,249
)
 
18,555

 
(6,249
)
 
$
38,562

 
$
(988
)
 
$
26,137

 
$
(6,698
)
 
$
64,699

 
$
(7,686
)
Schedule of Investment Securities by Maturity [Table Text Block]
The amortized cost and fair value of investment securities at December 31, 2012, by contractual maturity, are shown in the following tables. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Investment securities not due at a single maturity date are shown separately.
 
Available-for-Sale
 
Amortized
Cost
 
Fair
Value
 
(Dollars in thousands)
U.S. Treasury securities:
 
 
 
Due after one year through five years
$
16,964

 
$
17,363

GSE securities:
 
 
 
Due in one year or less
6,998

 
7,103

Due after one year through five years
32,141

 
32,868

Due after five years through ten years
6,489

 
6,497

Collateralized mortgage obligations:
 
 
 
Due after five years through ten years
6,172

 
6,468

Due after ten years
57,195

 
60,598

Commercial mortgage-backed securities:
 
 
 
Due after ten years
45,178

 
46,429

GSE residential mortgage-backed securities:
 
 
 
Due after ten years
2,400

 
2,368

Asset backed securities:
 
 
 
Due after ten years
3,876

 
4,053

Pooled trust preferred securities:
 
 
 
Due after ten years
22,409

 
19,542

GSE preferred stock
—

 
1

 
$
199,822

 
$
203,290


 
Held-to-Maturity
 
Amortized
Cost
 
Fair
Value
 
 (Dollars in thousands) 
Asset backed securities:
 
 
 
Due after one year through five years
$
6,578

 
$
6,797

Municipal securities:
 
 
 
Due in one year or less
3,000

 
3,009

Due after one year through five years
5,880

 
5,916

 
$
15,458

 
$
15,722
Schedule of Gross Realized Gains (Losses) on Available-for-sale Securities [Table Text Block]
The following table provides information as to the amount of gross gains and losses realized through the sales of investment securities available-for-sale:
 
2012
 
2011
 
2010
 
(Dollars in thousands)
Available-for-sale securities: 
 
 
 
 
 
Gross realized gains
$
1,644

 
$
1,715

 
$
689

Gross realized losses
(135
)
 
—

 
—

Net realized gains
$
1,509

 
$
1,715

 
$
689
Schedule of Concentration of Holdings of Investment Securities by Issuers [Table Text Block]
At December 31, 2012, other than the U.S. Government, its agencies, and GSEs, the Company had holdings of investment securities from two separate issuers in an amount greater than 10% of shareholders’ equity as identified in the table below:
Issuer
 
Book
Value
 
Market
Value
 
# of
Underlying
Pools
 
 
(Dollars in thousands)
 
 
IMPAC CMB Trust
 
$
10,295

 
$
11,608

 
3
JP Morgan Chase Commercial Mortgage Securities Corp
 
18,077

 
18,619

 
5