Unaudited Quarterly Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 30, 2017 |
Sep. 30, 2017 |
Jul. 01, 2017 |
Apr. 01, 2017 |
Dec. 31, 2016 |
Oct. 01, 2016 |
Jul. 02, 2016 |
Apr. 02, 2016 |
Dec. 30, 2017 |
Dec. 31, 2016 |
Jan. 02, 2016 |
|
| Unaudited Quarterly Financial Information [Abstract] | |||||||||||
| Net sales | $ 84,150 | $ 88,001 | $ 89,335 | $ 81,353 | $ 49,865 | $ 45,232 | $ 50,809 | $ 51,028 | $ 342,839 | $ 196,934 | $ 200,727 |
| Gross profit | 28,854 | 36,294 | 38,583 | 32,794 | 17,315 | 15,540 | 18,953 | 19,541 | 136,525 | 71,349 | 77,093 |
| Operating income | 7,604 | 17,402 | 20,701 | 15,784 | 4,886 | 7,243 | 10,444 | 11,886 | 61,491 | 34,459 | 46,891 |
| Income before income taxes | 5,523 | 15,978 | 10,904 | 15,139 | 4,555 | 7,557 | 10,594 | 12,196 | 47,544 | 34,901 | 49,230 |
| Net income | $ 2,768 | $ 11,295 | $ 7,284 | $ 10,211 | $ 3,118 | $ 4,989 | $ 6,990 | $ 8,208 | $ 31,558 | $ 23,304 | $ 33,138 |
| Basic and diluted net income per common share | $ 0.10 | $ 0.42 | $ 0.27 | $ 0.38 | $ 0.12 | $ 0.19 | $ 0.26 | $ 0.31 | $ 1.17 | $ 0.87 | $ 1.24 |
| X | ||||||||||
- Definition Unaudited quarterly financial information. No definition available.
|
| X | ||||||||||
- Definition The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. No definition available.
|
| X | ||||||||||
- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The net result for the period of deducting operating expenses from operating revenues. No definition available.
|
| X | ||||||||||
- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|