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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables)
 3 Months Ended
Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Schedule of components of other comprehensive income (loss)
The following tables present the components of other comprehensive income for the three months ended March 31, 2017 and 2016, by component:
 
(dollars in thousands)
Before Tax
 
Tax Effect
 
Net of Tax
Three Months Ended March 31, 2017
 

 
 

 
 

Net unrealized gains on investment securities:
 

 
 

 
 

Net unrealized gains arising during the period
$
3,527

 
$
1,403

 
$
2,124

Less: Reclassification adjustment for gains realized in net income
—

 
—

 
—

Net unrealized gains on investment securities
3,527

 
1,403

 
2,124

 
 
 
 
 
 
Defined benefit plans:
 

 
 

 
 

Net actuarial losses arising during the period
(1,042
)
 
(415
)
 
(627
)
Amortization of net actuarial loss
421

 
164

 
257

Amortization of net transition obligation
4

 
1

 
3

Amortization of prior service cost
4

 
1

 
3

Defined benefit plans, net
(613
)
 
(249
)
 
(364
)
 
 
 
 
 
 
Other comprehensive income
$
2,914

 
$
1,154

 
$
1,760


(dollars in thousands)
Before Tax
 
Tax Effect
 
Net of Tax
Three Months Ended March 31, 2016
 

 
 

 
 

Net unrealized gains on investment securities:
 

 
 

 
 

Net unrealized gains arising during the period
$
19,683

 
$
7,830

 
$
11,853

Less: Reclassification adjustment for losses realized in net income
—

 
—

 
—

Net unrealized gains on investment securities
19,683

 
7,830

 
11,853

 
 
 
 
 
 
Defined benefit plans:
 

 
 

 
 

Amortization of net actuarial loss
367

 
124

 
243

Amortization of net transition obligation
4

 
1

 
3

Amortization of prior service cost
5

 
1

 
4

Defined benefit plans, net
376

 
126

 
250

 
 
 
 
 
 
Other comprehensive income
$
20,059

 
$
7,956

 
$
12,103


 
 
 
 
 
 
Schedule of changes in each component of AOCI, net of tax
The following tables present the changes in each component of AOCI, net of tax, for the three months ended March 31, 2017 and 2016:
 
(dollars in thousands)
Investment
Securities
 
Defined
Benefit
Plans
 
Accumulated
Other
Comprehensive
Income
Three Months Ended March 31, 2017
 

 
 

 
 

Balance at beginning of period
$
4,729

 
$
(6,250
)
 
$
(1,521
)
 
 
 
 
 
 
Other comprehensive income before reclassifications
2,124

 
(627
)
 
1,497

Amounts reclassified from AOCI
—

 
263

 
263

Total other comprehensive income (loss)
2,124

 
(364
)
 
1,760

 
 
 
 
 
 
Balance at end of period
$
6,853

 
$
(6,614
)
 
$
239



(dollars in thousands)
Investment
Securities
 
Defined
Benefit
Plans
 
Accumulated
Other
Comprehensive
Income
Three Months Ended March 31, 2016
 

 
 

 
 

Balance at beginning of period
$
9,181

 
$
(8,978
)
 
$
203

 
 
 
 
 
 
Other comprehensive income before reclassifications
11,853

 
—

 
11,853

Amounts reclassified from AOCI
—

 
250

 
250

Total other comprehensive income
11,853

 
250

 
12,103

 
 
 
 
 
 
Balance at end of period
$
21,034

 
$
(8,728
)
 
$
12,306

 
 
 
 
 
 
 
 
 
 
 
 
Schedule of amounts reclassified out of each component of AOCI
The following table presents the amounts reclassified out of each component of AOCI for the three months ended March 31, 2017 and 2016:
 
 
Amount Reclassified from AOCI
 
Affected Line Item in the Statement Where Net Income is Presented
Details about AOCI Components
Three months ended March 31,
 
(dollars in thousands)
2017
 
2016
 
Amortization of defined benefit retirement and supplemental executive retirement plan items
 

 
 

 
 
Net actuarial loss
$
(421
)
 
$
(367
)
 
(1)
Net transition obligation
(4
)
 
(4
)
 
(1)
Prior service cost
(4
)
 
(5
)
 
(1)
 
(429
)
 
(376
)
 
Total before tax
 
166

 
126

 
Tax benefit
Total reclassifications for the period
$
(263
)
 
$
(250
)
 
Net of tax
 
 
 
 
 
 
 

(1)
These accumulated other comprehensive income components are included in the computation of net periodic pension cost (see Note 14 - Pension and Supplemental Executive Retirement Plans for additional details).