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INCOME TAXES (Tables)
12 Months Ended
Dec. 31, 2014
Income Tax Disclosure [Abstract]  
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

The provision for income taxes included the following components at December 31, 2014, 2013 and 2012:
 
 
2014
2013
2012
(Dollars in thousands)
Current:
Federal
$
7,339
$
6,449
$
6,985
State
1,131
940
928
Foreign
1,649
1,273
972
Total
10,119
8,662
8,885
Deferred
1,115
1,268
1,648
Total provision
$
11,234
$
9,930
$
10,533
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
The differences between the U.S. federal statutory income tax rate and the Company’s effective tax rate were as follows for the years ended December 31, 2014, 2013 and 2012:
 
 
2014
2013
2012
U.S. federal statutory income tax rate
35.0
%
35.0
%
35.0
%
State income taxes, net of federal tax benefit
2.8
2.6
2.3
Non-taxable municipal bond interest
(1.2
)
(1.7
)
(1.9
)
Foreign income tax rate differences
(0.8
)
(0.9
)
(2.2
)
Other
0.4
0.2
0.9
Effective tax rate
36.2
%
35.2
%
34.1
%
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
The components of deferred taxes as of December 31, 2014 and 2013 were as follows:
 
 
2014
2013
(Dollars in thousands)
Deferred tax benefits:
Accounts receivable reserves
$
442
$
440
Pension liability
13,161
8,691
Accrued liabilities
2,426
2,164
16,029
11,295
Deferred tax liabilities:
Inventory and related reserves
(3,636
)
(2,601
)
Cash value of life insurance
(3,451
)
(3,240
)
Property, plant and equipment
(1,703
)
(1,757
)
Intangible assets
(6,642
)
(5,948
)
Prepaid expenses and other assets
(240
)
(264
)
Foreign currency gains on intercompany loans
(105
)
(327
)
(15,777
)
(14,137
)
Net deferred income tax benefits (liabilities)
$
252
$
(2,842
)
Schedule of Deferred Tax Benefit (Liabilities) [Table Text Block]
The net deferred tax benefits (liabilities) are classified in the Consolidated Balance Sheets as follows:
 
 
2014
2013
(Dollars in thousands)
Current deferred income tax liabilities
$
(1,747
)
$
(849
)
Noncurrent deferred income tax benefits (liabilities)
1,999
(1,993
)
$
252
$
(2,842
)
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
The following table summarizes the activity related to the Company’s unrecognized tax benefits:
 
 
(Dollars in thousands)
Balance at December 31, 2011
$
Increases related to current year tax positions
124
Balance at December 31, 2012
$
124
Increases related to current year tax positions
Balance at December 31, 2013
$
124
Favorable settlements of tax positions
(55
)
Decreases related to prior year tax positions
(69
)
Balance at December 31, 2014
$