Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 30, 2018	Jan. 02, 2018	Dec. 31, 2017
Salaries, benefits and bonuses	$ 12,979		$ 15,365
Insurance reserves, current	33,769		19,847
Purchases	11,336		11,364
Accrued customer liabilities	2,443	$ 2,400
Rent	3,932		3,794
Marketing	4,539		1,481
Deposits	1,415		3,091
Utilities	1,478		1,382
Consulting and professional fees	8,671		1,134
Legal costs	2,093		804
Other	7,481		7,755
Total	105,712	$ 86,153	70,293
Customer loyalty program
Accrued customer liabilities	$ 18,019		$ 4,276

Accrued legal costs, current.

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Carrying value, as of the balance sheet date, of purchases incurred through that date but not received as of that date. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle, if longer).

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Amount of expenses incurred but not yet paid nor invoiced, and liabilities classified as other.

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for the marketing, trade and selling of the entity's goods and services. Marketing costs would include expenditures for planning and executing the conception, pricing, promotion, and distribution of ideas, goods, and services; costs of public relations and corporate promotions; and obligations incurred and payable for sales discounts, rebates, price protection programs, etc. offered to customers and under government programs. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for contractual rent under lease arrangements. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for utilities, such as electrical power, heating oil, natural gas, and water. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

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The current portion, due within one year or one operating cycle, if longer, of deposits held other than customer deposits.

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Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

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Carrying amount of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property that are expected to be paid within one year (or the normal operating cycle, if longer).

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