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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Net sales | $ 131,622 | $ 145,658 | $ 252,805 | $ 287,673 |
Cost of sales | 105,930 | 117,098 | 204,040 | 232,301 |
Gross profit | 25,692 | 28,560 | 48,765 | 55,372 |
Selling, general and administrative expenses | 17,966 | 20,764 | 35,636 | 38,372 |
Impairment of goodwill and other intangible assets | (2,611) | 0 | 105,972 | 0 | [1]
Restructuring charges | 373 | 344 | 601 | 502 |
Income (loss) from operations | 9,964 | 7,452 | (93,444) | 16,498 |
Interest expense | (1,505) | (1,994) | (3,706) | (4,173) |
Interest income and other, net | 184 | 17 | 224 | 420 |
Earnings (loss) before (benefit) provision for income taxes | 8,643 | 5,475 | (96,926) | 12,745 |
(Benefit) provision for income taxes | (14,133) | (587) | (19,005) | 1,363 |
Net earnings (loss) available to common stockholders | 22,776 | 6,062 | (77,921) | 11,382 | [1]
Class A [Member] |  |  |  |  |
Net earnings (loss) available to common stockholders | $ 3,987 | $ 1,054 | $ (13,718) | $ 1,981 |
Net earnings (loss) per common share: |  |  |  |  |
Common share - basic and diluted (in dollars per share) | $ 1.83 | $ 0.49 | $ (6.31) | $ 0.91 |
Weighted-average number of shares outstanding: |  |  |  |  |
Common share - basic and diluted (in shares) | 2,175 | 2,175 | 2,175 | 2,175 |
Dividends paid per common share: |  |  |  |  |
Common share (in dollars per share) | $ 0.06 | $ 0.06 | $ 0.12 | $ 0.12 |
Class B [Member] |  |  |  |  |
Net earnings (loss) available to common stockholders | $ 18,789 | $ 5,008 | $ (64,203) | $ 9,401 |
Net earnings (loss) per common share: |  |  |  |  |
Common share - basic and diluted (in dollars per share) | $ 1.93 | $ 0.52 | $ (6.61) | $ 0.97 |
Weighted-average number of shares outstanding: |  |  |  |  |
Common share - basic and diluted (in shares) | 9,729 | 9,693 | 9,715 | 9,682 |
Dividends paid per common share: |  |  |  |  |
Common share (in dollars per share) | $ 0.07 | $ 0.07 | $ 0.14 | $ 0.14 |
[1] | (Revised)

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