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Note 2 - Restatement of Previously Issued Financial Statements - Summary of Restatement (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 30, 2017 | Sep. 30, 2017 | Jul. 01, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Oct. 01, 2016 | Jul. 02, 2016 | Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2016
Net sales | $ 387,689 | $ 338,470 | $ 288,927 | $ 280,690 | $ 356,767 | $ 352,606 | $ 272,135 | $ 1,314,765 | $ 1,262,198 | $ 1,279,567
Cost of products sold | 357,188 | 321,059 | 273,392 | 259,592 | 318,841 | 321,581 | 250,180 | 1,240,178 | 1,150,194 | 1,128,990
Gross Profit | 30,501 | 17,411 | 15,535 | 21,098 | 37,926 | 31,025 | 21,955 |  | 112,004 | 150,577
Operating Income/(Loss) | 10,271 | (1,409) | 613 | 4,809 | 14,341 | 12,015 | 3,577 | (5,267) | 34,742 | 91,731
Earnings/(Loss) before income taxes | 6,259 | (4,842) | (2,583) | 1,924 | 12,260 | 9,594 | 1,870 | (20,283) | 25,648 | 83,639
Income tax (benefit) expense | 1,882 | (1,884) | (1,603) | 1,604 | 4,471 | 2,773 | 905 | (6,472) | 9,753 | 27,240
Net (loss) earnings | $ 4,377 | $ (2,958) | $ (980) | $ 320 | $ 7,789 | $ 6,821 | $ 965 | $ (13,811) | $ 15,895 | $ 56,399
Basic (loss) earnings per common share (in dollars per share) | $ 0.45 | $ (0.30) | $ (0.10) | $ 0.03 | $ 0.78 | $ 0.69 | $ 0.09 | $ (1.41) | $ 1.61 | $ 5.65
Diluted (loss) earnings per share (in dollars per share) | $ 0.44 | $ (0.30) | $ (0.10) | $ 0.03 | $ 0.77 | $ 0.69 | $ 0.09 | $ (1.41) | $ 1.60 | $ 5.61
Inventory | $ 770,702 | $ 859,146 | $ 655,419 | $ 628,935 | $ 699,445 | $ 801,684 | $ 611,063 | $ 680,828 | $ 628,935 | $ 609,481
Total Current Assets | 855,094 | 989,368 | 753,771 | 719,149 | 793,233 | 934,717 | 717,883 | 778,012 | 719,149 | 715,661
Total Assets | 1,134,237 | 1,271,944 | 1,031,981 | 978,268 | 1,053,746 | 1,185,203 | 951,152 | 1,070,431 | 978,268 | 944,991
Deferred Revenue | 80,151 | 75,150 | 37,337 | 46,100 | 60,553 | 47,716 | 43,068 | 60,657 | 46,100 | 62,584
Total Current Liabilities | 241,999 | 397,533 | 200,913 | 177,764 | 238,771 | 359,578 | 222,050 | 194,354 | 177,764 | 461,461
Total Liabilities | 711,798 | 853,200 | 607,651 | 553,064 | 647,136 | 785,586 | 557,810 | 673,501 | 553,064 | 552,156
Stockholders' Equity | 422,439 | 418,744 | 424,330 | 425,204 | 406,610 | 399,617 | 393,342 | 396,930 | 425,204 | 392,835
Total Liabilities and Stockholders' Equity | 1,134,237 | 1,271,944 | 1,031,981 | 978,268 | 1,053,746 | 1,185,203 | 951,152 | $ 1,070,431 | 978,268 | 944,991
Previously Reported [Member] |  |  |  |  |  |  |  |  |  |
Net sales | 392,714 | 376,308 | 280,187 | 266,115 | 369,705 | 357,247 | 252,614 |  | 1,245,681 | 1,275,360
Cost of products sold | 361,013 | 355,904 | 264,427 | 247,394 | 332,230 | 327,035 | 232,639 |  | 1,139,298 | 1,127,965
Gross Profit | 31,701 | 20,404 | 15,760 | 18,721 | 37,475 | 30,212 | 19,975 |  | 106,383 | 147,395
Operating Income/(Loss) | 11,471 | 1,584 | 838 | 2,432 | 13,890 | 11,202 | 1,597 |  | 29,121 | 88,549
Earnings/(Loss) before income taxes | 7,459 | (1,849) | (2,358) | (453) | 11,809 | 8,781 | (110) |  | 20,027 | 80,457
Income tax (benefit) expense | (268) | (737) | (1,519) | 1,197 | 3,628 | 2,637 | (48) |  | 7,414 | 25,999
Net (loss) earnings | $ 7,727 | $ (1,112) | $ (839) | $ (1,650) | $ 8,181 | $ 6,144 | $ (62) |  | $ 12,613 | $ 54,458
Basic (loss) earnings per common share (in dollars per share) | $ 0.79 | $ (0.11) | $ (0.09) | $ (0.17) | $ 0.83 | $ 0.62 | $ (0.01) |  | $ 1.27 | $ 5.46
Diluted (loss) earnings per share (in dollars per share) | $ 0.78 | $ (0.11) | $ (0.09) | $ (0.17) | $ 0.82 | $ 0.62 | $ (0.01) |  | $ 1.27 | $ 5.42
Inventory | $ 710,118 | $ 802,387 | $ 633,505 | $ 598,056 | $ 656,368 | $ 771,996 | $ 586,829 |  | $ 598,056 | $ 567,707
Total Current Assets | 794,510 | 932,609 | 731,857 | 688,270 | 750,156 | 905,029 | 693,649 |  | 688,270 | 673,887
Total Assets | 1,072,003 | 1,209,968 | 1,006,943 | 946,019 | 1,004,711 | 1,148,714 | 919,981 |  | 946,019 | 895,327
Deferred Revenue | 545 | 542 | 472 | 545 | 473 | 550 | 492 |  | 545 | 550
Total Current Liabilities | 162,423 | 322,982 | 164,200 | 132,277 | 178,732 | 312,466 | 179,579 |  | 132,277 | 399,458
Total Liabilities | 635,204 | 780,214 | 573,449 | 511,758 | 587,097 | 738,474 | 515,339 |  | 511,758 | 490,153
Stockholders' Equity | 436,799 | 429,754 | 433,494 | 434,261 | 417,614 | 410,240 | 404,642 |  | 434,261 | 405,174
Total Liabilities and Stockholders' Equity | 1,072,003 | 1,209,968 | 1,006,943 | 946,019 | 1,004,711 | 1,148,714 | 919,981 |  | 946,019 | 895,327
Restatement Adjustment [Member] |  |  |  |  |  |  |  |  |  |
Net sales | (5,025) | (37,838) | 8,740 | 14,575 | (12,938) | (4,641) | 19,521 |  | 16,517 | 4,207
Cost of products sold | (3,825) | (34,845) | 8,965 | 12,198 | (13,389) | (5,454) | 17,541 |  | 10,896 | 1,025
Gross Profit | (1,200) | (2,993) | (225) | 2,377 | 451 | 813 | 1,980 |  | 5,621 | 3,182
Operating Income/(Loss) | (1,200) | (2,993) | (225) | 2,377 | 451 | 813 | 1,980 |  | 5,621 | 3,182
Earnings/(Loss) before income taxes | (1,200) | (2,993) | (225) | 2,377 | 451 | 813 | 1,980 |  | 5,621 | 3,182
Income tax (benefit) expense | 2,150 | (1,147) | (84) | 407 | 843 | 136 | 953 |  | 2,339 | 1,241
Net (loss) earnings | $ (3,350) | $ (1,846) | $ (141) | $ 1,970 | $ (392) | $ 677 | $ 1,027 |  | $ 3,282 | $ 1,941
Basic (loss) earnings per common share (in dollars per share) | $ (0.34) | $ (0.19) | $ (0.01) | $ 0.20 | $ (0.05) | $ 0.07 | $ 0.10 |  | $ 0.34 | $ 0.20
Diluted (loss) earnings per share (in dollars per share) | $ (0.34) | $ (0.19) | $ (0.01) | $ 0.20 | $ (0.05) | $ 0.07 | $ 0.10 |  | $ 0.33 | $ 0.20
Inventory | $ 60,584 | $ 56,759 | $ 21,914 | $ 30,879 | $ 43,077 | $ 29,688 | $ 24,234 |  | $ 30,879 | $ 41,774
Total Current Assets | 60,584 | 56,759 | 21,914 | 30,879 | 43,077 | 29,688 | 24,234 |  | 30,879 | 41,774
Total Assets | 62,234 | 61,976 | 25,038 | 32,249 | 49,035 | 36,489 | 31,171 |  | 32,249 | 49,664
Deferred Revenue | 79,606 | 74,608 | 36,865 | 45,555 | 60,080 | 47,166 | 42,576 |  | 45,555 | 62,034
Total Current Liabilities | 79,576 | 74,551 | 36,713 | 45,487 | 60,039 | 47,112 | 42,471 |  | 45,487 | 62,003
Total Liabilities | 76,594 | 72,986 | 34,202 | 41,306 | 60,039 | 47,112 | 42,471 |  | 41,306 | 62,003
Stockholders' Equity | (14,360) | (11,010) | (9,164) | (9,057) | (11,004) | (10,623) | (11,300) |  | (9,057) | (12,339)
Total Liabilities and Stockholders' Equity | $ 62,234 | $ 61,976 | $ 25,038 | $ 32,249 | $ 49,035 | $ 36,489 | $ 31,171 |  | $ 32,249 | $ 49,664

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