Shareholders' Equity	12 Months Ended
Dec. 27, 2019
Stockholders Equity Note [Abstract]
Shareholders' Equity	11. Shareholders’ Equity Employee Stock Purchase Plan Effective July 1, 1998, the Company adopted an Employee Stock Purchase Plan to provide substantially all employees who have completed three months of service as of the beginning of an offering period an opportunity to purchase shares of its common stock through payroll deductions. Purchases on any one grant are limited to 10% of eligible compensation. Shares of the Company’s common stock may be purchased by employees at six -month intervals at 95% of the fair value on the last trading day of each six-month period. The aggregate fair value, determined as of the first trading date of the offering period, of shares purchased by an employee may not exceed $25,000 annually. In 2017, subject to shareholder approval, the Company’s Board of Directors agreed to extend the Employee Stock Purchase Plan to July 1, 2023 from July 1, 2018 and added an additional 250,000 shares of common stock which increased the total available shares of common stock to 279,606 at that time. As of 2019, a total of 105,252 shares of common stock were available for purchase under the plan. For plan years 2019, 2018 and 2017, 51,548 shares, 55,045 shares and 67,761 shares, respectively, were issued for total proceeds of $0.8 million, $0.8 million, and $1.0 million, respectively. Treasury Stock On July 30, 2002, the Company announced that its Board of Directors approved the repurchase of up to $5.0 million of the Company’s common stock. Since the inception of the repurchase plan, the Board of Directors approved the repurchase of an additional $137.2 million of the Company’s common stock, thereby increasing the total program size to $142.2 million as of December 27, 2019. As of December 27, 2019, the Company had affected cumulative purchases under the plan of $140.5 million, leaving $1.7 million available for future purchases. There is no expiration of the authorization. Under the repurchase plan, the Company may buy back shares of its outstanding stock from time to time either on the open market or through privately negotiated transactions, subject to market conditions and trading restrictions, excluding the tender offers mentioned above. Subsequent to December 27, 2019, the Board of Directors approved an additional $5.0 million authorization under the Company’s repurchase program, thereby increasing the total program size to $147.2 million. 11. Shareholders’ Equity (continued) During 2019 and 2018, the Company repurchased 339 thousand and 68 thousand shares of its common stock, respectively, at an average price per share of $15.60 and $17.82, respectively, for a total cost of $5.3 million and $1.2 million, respectively. As of December 27, 2019 and December 28, 2018, the Company had repurchased 27.4 million and 27.0 million shares of its common stock, respectively, at an average price of $5.1 per share. During 2019, the Company repurchased 28 thousand shares of its common stock from members of its Board of Directors for $0.5 million or $16.25 per share. The proceeds from the sale of these shares were used in part to cover estimated tax liabilities associated with previously vested restricted stock units. During 2018, the Company purchased 73 thousand shares, or $1.3 million, from its executives to cover withholding taxes on the gross value of shares that vested. These shares are not included in the repurchase plan. The Company holds repurchased shares of its common stock as treasury stock and accounts for treasury stock under the cost method. Shares purchased under the repurchase plan do not include shares withheld to satisfy withholding tax obligations. These withheld shares are never issued and in lieu of issuing the shares, taxes were paid on the employee’s behalf. In 2019 and 2018, 132 thousand shares were withheld and not issued for a cost of $2.5 million and 205 thousand shares were withheld and not issued for a cost of $3.6 million, respectively, which are included under issuance of common stock in the accompanying consolidated statements of shareholders’ equity. Dividends In December 2012, the Company announced an annual dividend of $0.10 per share to be paid semi-annually. The Company has steadily increased the annual dividend since 2012. Most recently, from 2017 to 2018 the dividend increased from $0.30 per share to $0.34 per share. In 2017, the Company increased the annual dividend to $0.30 per share to be paid on a semi-annual basis which resulted in aggregate dividends of $4.6 million and $4.7 million paid to shareholders of record on June 30, 2017 and December 22, 2017, respectively. In 2018, the Company increased the annual dividend to $0.34 per share to be paid on a semi-annual basis which resulted in aggregate dividends of $5.4 million each paid to shareholders of record on June 29, 2018 and December 21, 2018, respectively. In 2019, the Company increased the annual dividend to $0.36 per share to be paid on a semi-annual basis which resulted in aggregate dividends of $5.8 million each paid to shareholders of record on July 10, 2019 and December 20, 2019, respectively. These dividends were paid from U.S. domestic sources and are accounted for as an increase to accumulated deficit. The dividend declared in December 2019 was paid in January 2020. Subsequent to December 27, 2019, the Company increased its annual dividend to $0.38 per share to be paid on a semi-annual basis.

Shareholders' Equity

12 Months Ended

Dec. 27, 2019

11. Shareholders’ Equity

Employee Stock Purchase Plan

Effective July 1, 1998, the Company adopted an Employee Stock Purchase Plan to provide substantially all employees who have completed three months of service as of the beginning of an offering period an opportunity to purchase shares of its common stock through payroll deductions. Purchases on any one grant are limited to 10% of eligible compensation. Shares of the Company’s common stock may be purchased by employees at six -month intervals at 95% of the fair value on the last trading day of each six-month period. The aggregate fair value, determined as of the first trading date of the offering period, of shares purchased by an employee may not exceed $25,000 annually. In 2017, subject to shareholder approval, the Company’s Board of Directors agreed to extend the Employee Stock Purchase Plan to July 1, 2023 from July 1, 2018 and added an additional 250,000 shares of common stock which increased the total available shares of common stock to 279,606 at that time. As of 2019, a total of 105,252 shares of common stock were available for purchase under the plan. For plan years 2019, 2018 and 2017, 51,548 shares, 55,045 shares and 67,761 shares, respectively, were issued for total proceeds of $0.8 million, $0.8 million, and $1.0 million, respectively.

Treasury Stock

On July 30, 2002, the Company announced that its Board of Directors approved the repurchase of up to $5.0 million of the Company’s common stock. Since the inception of the repurchase plan, the Board of Directors approved the repurchase of an additional $137.2 million of the Company’s common stock, thereby increasing the total program size to $142.2 million as of December 27, 2019. As of December 27, 2019, the Company had affected cumulative purchases under the plan of $140.5 million, leaving $1.7 million available for future purchases. There is no expiration of the authorization. Under the repurchase plan, the Company may buy back shares of its outstanding stock from time to time either on the open market or through privately negotiated transactions, subject to market conditions and trading restrictions, excluding the tender offers mentioned above. Subsequent to December 27, 2019, the Board of Directors approved an additional $5.0 million authorization under the Company’s repurchase program, thereby increasing the total program size to $147.2 million.

11. Shareholders’ Equity (continued)

During 2019 and 2018, the Company repurchased 339 thousand and 68 thousand shares of its common stock, respectively, at an average price per share of $15.60 and $17.82, respectively, for a total cost of $5.3 million and $1.2 million, respectively. As of December 27, 2019 and December 28, 2018, the Company had repurchased 27.4 million and 27.0 million shares of its common stock, respectively, at an average price of $5.1 per share. During 2019, the Company repurchased 28 thousand shares of its common stock from members of its Board of Directors for $0.5 million or $16.25 per share. The proceeds from the sale of these shares were used in part to cover estimated tax liabilities associated with previously vested restricted stock units. During 2018, the Company purchased 73 thousand shares, or $1.3 million, from its executives to cover withholding taxes on the gross value of shares that vested. These shares are not included in the repurchase plan.

The Company holds repurchased shares of its common stock as treasury stock and accounts for treasury stock under the cost method.

Shares purchased under the repurchase plan do not include shares withheld to satisfy withholding tax obligations. These withheld shares are never issued and in lieu of issuing the shares, taxes were paid on the employee’s behalf. In 2019 and 2018, 132 thousand shares were withheld and not issued for a cost of $2.5 million and 205 thousand shares were withheld and not issued for a cost of $3.6 million, respectively, which are included under issuance of common stock in the accompanying consolidated statements of shareholders’ equity.

Dividends

In December 2012, the Company announced an annual dividend of $0.10 per share to be paid semi-annually. The Company has steadily increased the annual dividend since 2012. Most recently, from 2017 to 2018 the dividend increased from $0.30 per share to $0.34 per share. In 2017, the Company increased the annual dividend to $0.30 per share to be paid on a semi-annual basis which resulted in aggregate dividends of $4.6 million and $4.7 million paid to shareholders of record on June 30, 2017 and December 22, 2017, respectively. In 2018, the Company increased the annual dividend to $0.34 per share to be paid on a semi-annual basis which resulted in aggregate dividends of $5.4 million each paid to shareholders of record on June 29, 2018 and December 21, 2018, respectively. In 2019, the Company increased the annual dividend to $0.36 per share to be paid on a semi-annual basis which resulted in aggregate dividends of $5.8 million each paid to shareholders of record on July 10, 2019 and December 20, 2019, respectively. These dividends were paid from U.S. domestic sources and are accounted for as an increase to accumulated deficit. The dividend declared in December 2019 was paid in January 2020. Subsequent to December 27, 2019, the Company increased its annual dividend to $0.38 per share to be paid on a semi-annual basis.