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INCOME TAXES (Tables)
12 Months Ended
Dec. 31, 2017
Income Tax Disclosure [Abstract]  
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

The provision for income taxes included the following components for the years ended December 31, 2017, 2016 and 2015:
 
 
 
2017
 
2016
 
2015
  
 
(Dollars in thousands)
Current:
 
 
  
 
 
 
  
 
 
 
  
 
Federal
 
$
3,904
 
 
$
5,965
 
 
$
8,801
 
State
 
 
499
 
 
 
1,027
 
 
 
1,314
 
Foreign
 
 
633
 
 
 
737
 
 
 
501
 
Total
 
 
5,036
 
 
 
7,729
 
 
 
10,616
 
Deferred
 
 
2,187
 
 
 
(2,645
 
 
346
 
Total provision
 
$
7,223
 
 
$
5,084
 
 
$
10,962
 
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, 2017, 2016 and 2015:
 
 
 
2017
2016
2015
U.S. federal statutory income tax rate
35.0
%
35.0
%
35.0
%
State income taxes, net of federal tax benefit
2.9
3.5
3.4
Non-taxable municipal bond interest
(0.9
)
(1.0
)
(1.0
)
Foreign income tax rate differences
0.1
(0.6
)
0.4
Life insurance deferred tax reversal
(14.2
)
Impact of tax rate change on deferred taxes
(5.8
)
Other
(1.1
)
0.3
(0.1
)
Effective tax rate
30.2
%
23.0
%
37.7
%
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
The components of deferred taxes as of December 31, 2017, and 2016 were as follows:
 
 
2017
2016
(Dollars in thousands)
Deferred income tax assets:
Accounts receivable reserves
$
199
$
341
Pension liability
7,307
11,002
Accrued liabilities
1,975
2,648
Carryfoward losses
250
129
Foreign currency losses on intercompany loans
(46
)
53
9,685
14,173
Deferred income tax liabilities:
Inventory and related reserves
(2,989
)
(3,744
)
Cash value of life insurance
(337
)
(441
)
Property, plant and equipment
(1,373
)
(1,483
)
Intangible assets
(6,125
)
(8,284
)
Prepaid expenses and other assets
(180
)
(264
)
(11,004
)
(14,216
)
Net deferred income tax liabilities
$
(1,319
)
$
(43
)
Schedule of Deferred Tax Benefit (Liabilities) [Table Text Block]
The net deferred tax liabilities are classified in the Consolidated Balance Sheets as follows:
 
 
 
 
2017
 
2016
  
 
(Dollars in thousands)
Non-current deferred income tax benefits
 
$
750
 
 
$
660
 
Non-current deferred income tax liabilities
 
 
(2,069
) 
 
 
(703
Net deferred income tax liabilities
 
$
(1,319
) 
 
$
(43
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
The following table summarizes the activity related to the Company’s unrecognized tax benefits:
 
 
2017
2016
2015
(Dollars in thousands)
Unrecognized tax benefits balance at January 1,
$
275
$
284
$
Increases related to current year tax positions
144
239
284
Decreases due to settlements of tax positions
(7
)
(248
)
Unrecognized tax benefits balance at December 31,
$
412
$
275
$
284