Shareholders' Equity	12 Months Ended
Jan. 01, 2019
Equity [Abstract]
Shareholders' Equity	Shareholders’ Equity The authorized common stock of the Company consists of 400,000,000 shares. Holders of the Company’s common stock are entitled to one vote for each share of common stock. As of January 1, 2019, there were 37,305,342 shares of common stock issued and outstanding and warrants to purchase 5,952,423 shares of the Company’s common stock outstanding at a strike price of $11.50. All of the outstanding warrants are exercisable. The Company is authorized to issue 1,000,000 preferred shares with designations, voting and other rights and preferences as may be determined from time to time by the Board of Directors. As of January 1, 2019, there were no preferred shares issued or outstanding. On February 26, 2016, the Company's Board of Directors authorized a share repurchase program covering up to $25.0 million in the aggregate of the Company's common stock and warrants which was effective immediately and expires upon completion of the repurchase program, unless terminated earlier by the Board of Directors. On August 23, 2016, the Company announced that the Board of Directors increased the repurchase program by $25.0 million, to $50.0 million. The Board of Directors authorized an additional increase for the repurchase program effective July 23, 2018 of another $25.0 million, to a total of $75.0 million. Purchases under the program may be made in open market or privately negotiated transactions. During the fifty-two weeks ended January 1, 2019, the Company repurchased (1) 1,408,071 shares of common stock for an average price per share of $11.48 for an aggregate cost of approximately $16.2 million, including incremental direct costs to acquire the shares, and (2) 47,511 warrants for an average price per warrant of $2.55 for an aggregate cost of approximately $0.1 million, including incremental direct costs to acquire the warrants. During the fifty-two weeks ended January 2, 2018, the Company repurchased (1) 986,497 shares of common stock for an average price per share of $12.41 for an aggregate cost of approximately $12.3 million, including incremental direct costs to acquire the shares, and (2) 424,439 warrants for an average price per warrant of $3.72 for an aggregate cost of approximately $1.6 million, including incremental direct costs to acquire the warrants. During the fifty-three weeks ended January 3, 2017, the Company repurchased (1) 1,347,300 shares of common stock for an average price per share of $10.00 for an aggregate cost of approximately $13.5 million, including incremental direct costs to acquire the shares, and (2) 699,007 warrants for an average price per warrant of $2.54 for an aggregate cost of approximately $1.8 million, including incremental direct costs to acquire the warrants. The Company expects to retire the repurchased shares and warrants and therefore has accounted for them as constructively retired as of January 1, 2019. As of January 1, 2019, there was approximately $29.6 million remaining under the share repurchase program. The Company has no obligations to repurchase shares or warrants under this authorization, and the timing and value of shares and warrants purchased will depend on the Company's stock price, warrant price, market conditions and other factors. Of the 424,439 warrants purchased during the fifty-two weeks ended January 2, 2018, 400,000 warrants were purchased from PW Acquisitions, LP, a related party, at $3.75 per warrant, representing a 5% discount from the closing price of $3.95 per warrant on the transaction date. A member of the Company's Board of Directors is the chief executive officer and managing member of the general partner of PW Acquisitions, LP. On July 11, 2016, the Company commenced an offer to exchange 0.2780 shares of the Company's common stock for each outstanding Company warrant exercisable for shares at an exercise price of $11.50 per share (approximately one share for every 3.6 warrants tendered), up to a maximum of 6,750,000 warrants, which amount was subsequently increased to 7,750,000 warrants. The offer to exchange expired on August 8, 2016. A total of 5,516,243 warrants were tendered in the exchange offer. All of the Company's directors and executive officers who control or beneficially owned warrants participated in the offer and in aggregate tendered 1,501,800 of their warrants. The Company accepted for exchange all such warrants and issued an aggregate of 1,533,542 shares of the Company's common stock in exchange for the warrants tendered, representing approximately 4% of the shares outstanding after such issuance. The warrants will expire on June 30, 2020, unless sooner exercised or redeemed by the Company in accordance with the terms of the warrants. For the fifty-three weeks ended January 3, 2017, the Company incurred approximately $0.6 million of transaction expenses related to the offer to exchange.

Shareholders’ Equity

The authorized common stock of the Company consists of 400,000,000 shares. Holders of the Company’s common stock are entitled to one vote for each share of common stock. As of January 1, 2019, there were 37,305,342 shares of common stock issued and outstanding and warrants to purchase 5,952,423 shares of the Company’s common stock outstanding at a strike price of $11.50. All of the outstanding warrants are exercisable.

The Company is authorized to issue 1,000,000 preferred shares with designations, voting and other rights and preferences as may be determined from time to time by the Board of Directors. As of January 1, 2019, there were no preferred shares issued or outstanding.

On February 26, 2016, the Company's Board of Directors authorized a share repurchase program covering up to $25.0 million in the aggregate of the Company's common stock and warrants which was effective immediately and expires upon completion of the repurchase program, unless terminated earlier by the Board of Directors. On August 23, 2016, the Company announced that the Board of Directors increased the repurchase program by $25.0 million, to $50.0 million. The Board of Directors authorized an additional increase for the repurchase program effective July 23, 2018 of another $25.0 million, to a total of $75.0 million. Purchases under the program may be made in open market or privately negotiated transactions.

During the fifty-two weeks ended January 1, 2019, the Company repurchased (1) 1,408,071 shares of common stock for an average price per share of $11.48 for an aggregate cost of approximately $16.2 million, including incremental direct costs to acquire the shares, and (2) 47,511 warrants for an average price per warrant of $2.55 for an aggregate cost of approximately $0.1 million, including incremental direct costs to acquire the warrants.

During the fifty-two weeks ended January 2, 2018, the Company repurchased (1) 986,497 shares of common stock for an average price per share of $12.41 for an aggregate cost of approximately $12.3 million, including incremental direct costs to acquire the shares, and (2) 424,439 warrants for an average price per warrant of $3.72 for an aggregate cost of approximately $1.6 million, including incremental direct costs to acquire the warrants.

During the fifty-three weeks ended January 3, 2017, the Company repurchased (1) 1,347,300 shares of common stock for an average price per share of $10.00 for an aggregate cost of approximately $13.5 million, including incremental direct costs to acquire the shares, and (2) 699,007 warrants for an average price per warrant of $2.54 for an aggregate cost of approximately $1.8 million, including incremental direct costs to acquire the warrants.

The Company expects to retire the repurchased shares and warrants and therefore has accounted for them as constructively retired as of January 1, 2019. As of January 1, 2019, there was approximately $29.6 million remaining under the share repurchase program. The Company has no obligations to repurchase shares or warrants under this authorization, and the timing and value of shares and warrants purchased will depend on the Company's stock price, warrant price, market conditions and other factors.

Of the 424,439 warrants purchased during the fifty-two weeks ended January 2, 2018, 400,000 warrants were purchased from PW Acquisitions, LP, a related party, at $3.75 per warrant, representing a 5% discount from the closing price of $3.95 per warrant on the transaction date. A member of the Company's Board of Directors is the chief executive officer and managing member of the general partner of PW Acquisitions, LP.

On July 11, 2016, the Company commenced an offer to exchange 0.2780 shares of the Company's common stock for each outstanding Company warrant exercisable for shares at an exercise price of $11.50 per share (approximately one share for every 3.6 warrants tendered), up to a maximum of 6,750,000 warrants, which amount was subsequently increased to 7,750,000 warrants. The offer to exchange expired on August 8, 2016. A total of 5,516,243 warrants were tendered in the exchange offer. All of the Company's directors and executive officers who control or beneficially owned warrants participated in the offer and in aggregate tendered 1,501,800 of their warrants. The Company accepted for exchange all such warrants and issued an aggregate of 1,533,542 shares of the Company's common stock in exchange for the warrants tendered, representing approximately 4% of the shares outstanding after such issuance. The warrants will expire on June 30, 2020, unless sooner exercised or redeemed by the Company in accordance with the terms of the warrants. For the fifty-three weeks ended January 3, 2017, the Company incurred approximately $0.6 million of transaction expenses related to the offer to exchange.