| Schedule of Quarterly Financial Information [Table Text Block] |
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Three Months Ended
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Mar. 31,
2013
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Jun. 30,
2013
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Sep. 30,
2013
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Dec. 31,
2013
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Interest income
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|
$
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59,129
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|
$
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68,816
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$
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77,024
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$
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86,758
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Interest expense
|
|
|
46,145
|
|
|
|
54,917
|
|
|
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61,532
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|
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|
68,584
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|
|
Net interest income
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12,984
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|
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13,899
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|
|
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15,492
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18,174
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Other Income:
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|
|
|
|
|
|
|
|
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Provision for loan losses
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(283
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)
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(384
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)
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|
(238
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)
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|
(357
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)
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|
Impairment loss on investment securities
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—
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|
|
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—
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|
(225
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)
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|
—
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Realized gain (loss) on investment securities and related hedges, net
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(3,162
|
)
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|
(8,490
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)
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3,319
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|
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|
(2,386
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)
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Realized gain on distressed residential mortgage loans
|
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|
136
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|
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|
435
|
|
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|
486
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|
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|
543
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Unrealized (loss) gain on investment securities and related hedges, net
|
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2,456
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|
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|
2,057
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|
(1,498
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)
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2,449
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Unrealized gain on multi-family loans and debt held in securitization trusts, net
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7,051
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8,981
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6,338
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9,125
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Other Income (loss)
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|
268
|
|
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|
235
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5
|
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2,201
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Total other income
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6,466
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|
2,834
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|
|
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8,187
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|
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11,575
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|
General, administrative and other expenses
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|
3,936
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|
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|
4,644
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|
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|
5,082
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|
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6,255
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Income from operations before income taxes
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15,514
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|
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|
12,089
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18,597
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23,494
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Income tax expense
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|
131
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|
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|
189
|
|
|
|
211
|
|
|
|
208
|
|
|
Net income
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15,383
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|
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|
11,900
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18,386
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|
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23,286
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Preferred Stock Dividends
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—
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(662
|
)
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(1,453
|
)
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|
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(1,453
|
)
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Net income attributable to common stockholders
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$
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15,383
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$
|
11,238
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$
|
16,933
|
|
|
$
|
21,833
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Per share basic income
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$
|
0.31
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|
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$
|
0.19
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|
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$
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0.27
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|
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$
|
0.34
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Per share diluted income
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$
|
0.31
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|
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$
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0.19
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$
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0.27
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$
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0.34
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Dividends declared per common share
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$
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0.27
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$
|
0.27
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|
|
$
|
0.27
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|
|
$
|
0.27
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Weighted average shares outstanding-basic
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49,611
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58,959
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|
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|
63,755
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63,875
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Weighted average shares outstanding-diluted
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49,611
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58,959
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63,755
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63,875
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Three Months Ended
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|
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|
Mar. 31,
2012
|
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Jun. 30,
2012
|
|
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Sep. 30,
2012
|
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Dec. 31,
2012
|
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Interest income
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|
$
|
19,091
|
|
|
$
|
24,991
|
|
|
$
|
43,837
|
|
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$
|
49,429
|
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Interest expense
|
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|
12,884
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|
|
|
19,150
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|
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|
35,748
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|
|
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38,144
|
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Net interest income
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|
6,207
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|
|
|
5,841
|
|
|
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8,089
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|
|
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11,285
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Other Income:
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|
|
|
|
|
|
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|
|
|
|
|
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|
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Provision for loan losses
|
|
|
(230
|
)
|
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(59
|
)
|
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(247
|
)
|
|
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(230
|
)
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Realized gain (loss) on investment securities and related hedges, net
|
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|
1,057
|
|
|
|
(456
|
)
|
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|
5,037
|
|
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|
630
|
|
|
Realized gain on distressed residential mortgage loans held in securitization trusts
|
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|
—
|
|
|
|
—
|
|
|
|
—
|
|
|
|
85
|
|
|
Unrealized (loss) gain on investment securities and related hedges, net
|
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|
(872
|
)
|
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|
171
|
|
|
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(1,875
|
)
|
|
|
(1,371
|
)
|
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Unrealized gain on multi-family loans and debt held in securitization trusts, net
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|
2,023
|
|
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|
2,204
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|
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|
762
|
|
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|
1,673
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|
|
Other Income (loss)
|
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|
375
|
|
|
|
358
|
|
|
|
(65
|
)
|
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|
135
|
|
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Total other income
|
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|
2,353
|
|
|
|
2,218
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|
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|
3,612
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|
|
|
922
|
|
|
General, administrative and other expenses
|
|
|
2,661
|
|
|
|
2,645
|
|
|
|
3,189
|
|
|
|
2,932
|
|
|
Income from continuing operations before income taxes
|
|
|
5,899
|
|
|
|
5,414
|
|
|
|
8,512
|
|
|
|
9,275
|
|
|
Income tax expense (benefit)
|
|
|
—
|
|
|
|
467
|
|
|
|
598
|
|
|
|
(133
|
)
|
|
Income from continuing operations
|
|
|
5,899
|
|
|
|
4,947
|
|
|
|
7,914
|
|
|
|
9,408
|
|
|
(Loss) income from discontinued operation - net of tax
|
|
|
(9
|
)
|
|
|
42
|
|
|
|
(1
|
)
|
|
|
(18
|
)
|
|
Net income
|
|
|
5,890
|
|
|
|
4,989
|
|
|
|
7,913
|
|
|
|
9,390
|
|
|
Net income (loss) attributable to noncontrolling interest
|
|
|
51
|
|
|
|
(148
|
)
|
|
|
—
|
|
|
|
—
|
|
|
Net income attributable to common stockholders
|
|
$
|
5,839
|
|
|
$
|
5,137
|
|
|
$
|
7,913
|
|
|
$
|
9,390
|
|
|
Per share basic income
|
|
$
|
0.42
|
|
|
$
|
0.34
|
|
|
$
|
0.30
|
|
|
$
|
0.19
|
|
|
Per share diluted income
|
|
$
|
0.42
|
|
|
$
|
0.34
|
|
|
$
|
0.30
|
|
|
$
|
0.19
|
|
|
Dividends declared per common share
|
|
$
|
0.25
|
|
|
$
|
0.27
|
|
|
$
|
0.27
|
|
|
$
|
0.27
|
|
|
Weighted average shares outstanding-basic
|
|
|
13,998
|
|
|
|
15,262
|
|
|
|
26,541
|
|
|
|
48,219
|
|
|
Weighted average shares outstanding-diluted
|
|
|
13,998
|
|
|
|
15,262
|
|
|
|
26,541
|
|
|
|
48,219
|
|
|