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Goodwill and Other Intangible Assets (Tables)
 6 Months Ended
Jun. 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
 
Six Months Ended
 
June 30,
 
March 31,
 
June 30,
 
June 30,
 
2017
 
2017
 
2016
 
2017
 
2016
 
(In thousands)
Gross Amount of CDI and CRI:
 
 
 
 
 
 
 
 
 
Balance, beginning of period
$
64,187

 
$
64,187

 
$
93,824

 
$
64,187

 
$
95,524

Fully amortized portion
—

 
—

 
(17,311
)
 
—

 
(17,311
)
Reduction due to sale of PWEF leasing unit
—

 
—

 
—

 
—

 
(1,700
)
Balance, end of period
64,187

 
64,187

 
76,513

 
64,187

 
76,513

Accumulated Amortization:
 
 
 
 
 
 
 
 
 
Balance, beginning of period
(30,885
)
 
(27,821
)
 
(45,687
)
 
(27,821
)
 
(42,304
)
Amortization
(3,065
)
 
(3,064
)
 
(4,371
)
 
(6,129
)
 
(9,117
)
Fully amortized portion
—

 
—

 
17,311

 
—

 
17,311

Reduction due to sale of PWEF leasing unit
—

 
—

 
—

 
—

 
1,363

Balance, end of period
(33,950
)
 
(30,885
)
 
(32,747
)
 
(33,950
)
 
(32,747
)
Net CDI and CRI, end of period
$
30,237

 
$
33,302

 
$
43,766

 
$
30,237

 
$
43,766