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Goodwill and Other Intangible Assets (Tables)
 3 Months Ended
Mar. 31, 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
 
March 31,
 
December 31,
 
March 31,
 
2017
 
2016
 
2016
 
(In thousands)
Gross Amount of CDI and CRI:
 
 
 
 
 
Balance, beginning of period
$
64,187

 
$
73,702

 
$
95,524

Fully amortized portion
—

 
(9,515
)
 
—

Reduction due to sale of PWEF leasing unit
—

 
—

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

 
64,187

 
93,824

Accumulated Amortization:
 
 
 
 
 
Balance, beginning of period
(27,821
)
 
(34,160
)
 
(42,304
)
Amortization
(3,064
)
 
(3,176
)
 
(4,746
)
Fully amortized portion
—

 
9,515

 
—

Reduction due to sale of PWEF leasing unit
—

 
—

 
1,363

Balance, end of period
(30,885
)
 
(27,821
)
 
(45,687
)
Net CDI and CRI, end of period
$
33,302

 
$
36,366

 
$
48,137