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STOCKHOLDERS' EQUITY AND ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables)
 3 Months Ended 12 Months Ended
Mar. 31, 2014
Dec. 31, 2013
Equity [Abstract]    
Schedule of Accumulated Other Comprehensive Income (Loss)
The following table reflects the changes in accumulated other comprehensive loss by component:
 
Pension
 
Postretirement
medical benefits
 
Tax effect of
other
comprehensive
income gains
 
Accumulated
other
comprehensive
loss
 
(In thousands)
Balance at December 31, 2013
$
(12,255
)
 
$
(20,292
)
 
$
(31,048
)
 
$
(63,595
)
Other comprehensive income (loss) before reclassifications
—

 
—

 
(138
)
 
(138
)
Amounts reclassified from accumulated other comprehensive income (loss)
359

 
5

 
—

 
364

Balance at March 31, 2014
$
(11,896
)
 
$
(20,287
)
 
$
(31,186
)
 
$
(63,369
)

The following table reflects the changes in accumulated other comprehensive income (loss) by component:
 
Pension
 
Postretirement
medical benefits
 
Available for
sale
securities
 
Tax effect of
other
comprehensive
income gains
 
Accumulated
other
comprehensive
loss
 
(In thousands)
Balance at December 31, 2012
$
(44,719
)
 
$
(77,527
)
 
$
57

 
$
(26,156
)
 
$
(148,345
)
Other comprehensive income before reclassifications
28,974

 
53,230

 
(45
)
 
(4,892
)
 
77,267

Amounts reclassified from accumulated other comprehensive income (loss)
3,490

 
4,005

 
(12
)
 
—

 
7,483

Balance at December 31, 2013
$
(12,255
)
 
$
(20,292
)
 
$
—

 
$
(31,048
)
 
$
(63,595
)
The following is a summary of accumulated other comprehensive income (loss):
 
Pension and
Postretirement
Medical Benefits
 
Available for
Sale
Securities
 
Tax Effect of
Other
Comprehensive
Income Gains
 
Accumulated
Other
Comprehensive
Loss
 
(In thousands)
Balance at January 1, 2011
$
(32,049
)
 
$
525

 
$
(26,156
)
 
$
(57,680
)
2011 activity
(63,575
)
 
(200
)
 
—

 
(63,775
)
Balance at December 31, 2011
(95,624
)
 
325

 
(26,156
)
 
(121,455
)
2012 activity
(26,622
)
 
(268
)
 
—

 
(26,890
)
Balance at December 31, 2012
(122,246
)
 
57

 
(26,156
)
 
(148,345
)
2013 activity
89,699

 
(57
)
 
(4,892
)
 
84,750

Balance at December 31, 2013
$
(32,547
)
 
$
—

 
$
(31,048
)
 
$
(63,595
)
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]
The following table reflects the reclassifications out of accumulated other comprehensive loss for the three months ended March 31, 2014 are as follows (in thousands):
Details about accumulated other comprehensive loss components
 
Amount reclassified from accumulated
other comprehensive loss1
 
Affected line item
in the statement
where net income
(loss) is presented
 
Three Months Ended March 31, 2014
 
Amortization of defined benefit pension items
 
 
 
 
Actuarial losses
 
$
359

 
2 
Amortization of postretirement medical items
 
 
 
 
Prior service costs
 
$
(159
)
 
3 
Actuarial losses
 
164

 
3 
 
 
$
5

 
Total
____________________
(1)
Amounts in parentheses indicate debits to income/loss.
(2)
These accumulated other comprehensive loss components are included in the computation of net periodic pension cost. (See Note 5 - Pension for additional details)
(3)
These accumulated other comprehensive loss components are included in the computation of net periodic postretirement medical cost. (See Note 5 - Postretirement Medical Benefits for additional details)
The following table reflects the reclassifications out of accumulated other comprehensive income (loss) for the year ended December 31, 2013 (in thousands):
Details about accumulated other comprehensive income (loss) components
 
Amount reclassified from accumulated
other comprehensive income (loss)(1)
 
Affected line item
in the statement
where net income
(loss) is presented
 
 
Available-for sale securities
 
 
 
 
Realized gains and losses on available-for sale securities
 
$
(12
)
 
Other income (loss)
 
 
$
(12
)
 
Total
Amortization of defined benefit pension items:
 
 
 
 
Actuarial losses
 
$
3,490

 
(2) 
Amortization of postretirement medical items:
 
 
 
 
Prior service costs
 
$
(636
)
 
(3) 
Actuarial losses
 
4,641

 
(3) 
 
 
$
4,005

 
Total
____________________
(1)
Amounts in parentheses indicate debits to income/loss.
(2)
These accumulated other comprehensive income components are included in the computation of net periodic pension cost. (See Note 7 - Pension and Other Savings Plans for additional details)
(3)
These accumulated other comprehensive income components are included in the computation of net periodic postretirement medical cost. (See Note 6 - Postretirement Medical Benefits for additional details)