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Other Comprehensive Income (Tables) | 12 Months Ended
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Dec. 31, 2018
Other Comprehensive Income [Abstract] |
Schedule of Accumulated Other Comprehensive Income |
|  | Pension Benefit
|  | 2018 |  | 2017
Amounts Recognized in Accumulated Other Comprehensive Loss |  |  |  |
Unrecognized prior service cost |  | $ | 190 |  |  | $ | 50 |
Unrecognized net loss |  | 11,610 |  |  | 15,600 |
Total accumulated other comprehensive loss recognized at December 31 |  | $ | 11,800 |  |  | $ | 15,650 |
Changes in AOCI by component for the year ended December 31, 2018 are summarized as follows, net of tax (dollars in thousands):
|  | Defined Benefit Plans |  | Derivative Instruments |  | Foreign Currency Translation |  | Total
Balance, December 31, 2017 |  | $ | (10,450 | ) |  | $ | (3,170 | ) |  | $ | (3,710 | ) |  | $ | (17,330 | )
Net unrealized gains (losses) arising during the period (a) |  | — |  |  | 4,110 |  |  | (6,880 | ) |  | (2,770 | )
Less: Net realized losses reclassified to net income (b) |  | (3,250 | ) |  | — |  |  | — |  |  | (3,250 | )
Net current-period other comprehensive income (loss) |  | 3,250 |  |  | 4,110 |  |  | (6,880 | ) |  | 480 |
Balance, December 31, 2018 |  | $ | (7,200 | ) |  | $ | 940 |  |  | $ | (10,590 | ) |  | $ | (16,850 | )
__________________________ (a) Derivative instruments, net of income tax of $1.2 million. See Note 11, "Derivative Instruments," for further details. (b) Defined benefit plans, net of income tax of $0.9 million. See Note 14, "Employee Benefit Plans," for additional details. Changes in AOCI by component for the year ended December 31, 2017 are summarized as follows, net of tax (dollars in thousands):
|  | Defined Benefit Plans |  | Derivative Instruments |  | Foreign Currency Translation |  | Total
Balance, December 31, 2016 |  | $ | (12,120 | ) |  | $ | (2,520 | ) |  | $ | (9,760 | ) |  | $ | (24,400 | )
Net unrealized gains (losses) arising during the period (a) |  | 1,000 |  |  | (3,750 | ) |  | 6,050 |  |  | 3,300 |
Less: Net realized losses reclassified to net income (b) |  | (670 | ) |  | (3,100 | ) |  | — |  |  | (3,770 | )
Net current-period other comprehensive income (loss) |  | 1,670 |  |  | (650 | ) |  | 6,050 |  |  | 7,070 |
Balance, December 31, 2017 |  | $ | (10,450 | ) |  | $ | (3,170 | ) |  | $ | (3,710 | ) |  | $ | (17,330 | )
__________________________ (a) Defined benefit plans, net of income tax of $0.3 million. See Note 14, "Employee Benefit Plans," for additional details. Derivative instruments, net of income tax expense of $1.3 million. See Note 11, "Derivative Instruments," for further details. (b) Defined benefit plans, net of income tax of $0.3 million. See Note 14, "Employee Benefit Plans," for additional details. Derivative instruments, net of income tax expense of $1.9 million. See Note 11, "Derivative Instruments," for further details.

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 + Details
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