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Goodwill and Other Intangible Assets (Tables)
 9 Months Ended
Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible assets disclosure
The following table presents the changes in CDI and CRI and the related accumulated amortization for the periods indicated:
 
Three Months Ended
 
Nine Months Ended
 
September 30,
 
June 30,
 
September 30,
 
September 30,
 
2017
 
2017
 
2016
 
2017
 
2016
 
(In thousands)
Gross Amount of CDI and CRI:
 
 
 
 
 
 
 
 
 
Balance, beginning of period
$
64,187

 
$
64,187

 
$
76,513

 
$
64,187

 
$
95,524

Fully amortized portion
(2,190
)
 
—

 
(2,811
)
 
(2,190
)
 
(20,122
)
Reduction due to sale of PWEF leasing unit
—

 
—

 
—

 
—

 
(1,700
)
Balance, end of period
61,997

 
64,187

 
73,702

 
61,997

 
73,702

Accumulated Amortization:
 
 
 
 
 
 
 
 
 
Balance, beginning of period
(33,950
)
 
(30,885
)
 
(32,747
)
 
(27,821
)
 
(42,304
)
Amortization
(3,049
)
 
(3,065
)
 
(4,224
)
 
(9,178
)
 
(13,341
)
Fully amortized portion
2,190

 
—

 
2,811

 
2,190

 
20,122

Reduction due to sale of PWEF leasing unit
—

 
—

 
—

 
—

 
1,363

Balance, end of period
(34,809
)
 
(33,950
)
 
(34,160
)
 
(34,809
)
 
(34,160
)
Net CDI and CRI, end of period
$
27,188

 
$
30,237

 
$
39,542

 
$
27,188

 
$
39,542