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Operations and Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Schedule of property plant and equipment useful life | Property, plant and equipment are stated at cost and depreciated using the straight-line method over the following estimated useful lives:
| Building and improvements | 12 to 40 years
| Leasehold improvements | Shorter of life of asset or life of lease
| Machinery and equipment | 2 to 15 years
Schedule of calculation of basic and diluted earnings per share | The following table sets forth the computation of basic and diluted earnings per share at December 31, 2017, 2016 and 2015, respectively:
| 2017 |  | 2016 |  | 2015
Net income | $ | 55,487 |  |  | $ | 14,664 |  |  | $ | 30,498 |
Basic-weighted average shares outstanding | 27,939 |  |  | 27,804 |  |  | 27,653 |
Effect of dilutive potential securities | 232 |  |  | 160 |  |  | 205 |
Diluted-weighted average shares outstanding | 28,171 |  |  | 27,964 |  |  | 27,858 |
Net income (per share) |  |  |  |  |
Basic | $ | 1.99 |  |  | $ | 0.53 |  |  | $ | 1.10 |
Diluted | 1.97 |  |  | 0.52 |  |  | 1.09 |
Schedule of accumulated other comprehensive loss | Accumulated other comprehensive loss consists of the following:
| Cash Flow Hedging Gain (Loss) |  | Pension Liability |  | Cumulative Translation Adjustments |  | Accumulated Other Comprehensive Loss
Balance, December 31, 2014 | $ | 3,276 |  |  | $ | (30,760 | ) |  | $ | (12,338 | ) |  | $ | (39,822 | )
Other comprehensive income (loss) before reclassifications, net of tax | 4,482 |  |  | 2,739 |  |  | (16,775 | ) |  | (9,554 | )
Amounts reclassified from accumulated other comprehensive income (loss) before tax a | (10,399 | ) |  | 3,233 |  |  | — |  |  | (7,166 | )
Income tax provision (benefit) | 3,842 |  |  | (1,194 | ) |  | — |  |  | 2,648 |
Net current-period other comprehensive income (loss) | (2,075 | ) |  | 4,778 |  |  | (16,775 | ) |  | (14,072 | )
Balance, December 31, 2015 | $ | 1,201 |  |  | $ | (25,982 | ) |  | $ | (29,113 | ) |  | $ | (53,894 | )
Other comprehensive income (loss) before reclassifications, net of tax | 1,088 |  |  | (2,229 | ) |  | (4,501 | ) |  | (5,642 | )
Amounts reclassified from accumulated other comprehensive income (loss) before tax a | (1,179 | ) |  | 2,780 |  |  | — |  |  | 1,601 |
Income tax provision (benefit) | 436 |  |  | (1,027 | ) |  | — |  |  | (591 | )
Net current-period other comprehensive income (loss) | 345 |  |  | (476 | ) |  | (4,501 | ) |  | (4,632 | )
Balance, December 31, 2016 | $ | 1,546 |  |  | $ | (26,458 | ) |  | $ | (33,614 | ) |  | $ | (58,526 | )
Other comprehensive income (loss) before reclassifications, net of tax | (5,529 | ) |  | (1,142 | ) |  | 13,879 |  |  | 7,208 |
Amounts reclassified from accumulated other comprehensive income (loss) before tax a | 718 |  |  | 2,835 |  |  | — |  |  | 3,553 |
Income tax provision (benefit) | (265 | ) |  | (1,048 | ) |  | — |  |  | (1,313 | )
Net current-period other comprehensive income (loss) | (5,076 | ) |  | 645 |  |  | 13,879 |  |  | 9,448 |
Balance, December 31, 2017 | $ | (3,530 | ) |  | $ | (25,813 | ) |  | $ | (19,735 | ) |  | $ | (49,078 | )
(a) The cash flow hedging gain (loss) and pension liability accumulated other comprehensive income components are included in sales or cost of sales and as a component of net periodic pension cost, respectively. Refer to Note 14 and Note 10, respectively, for further details.

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