Derivative Instruments	6 Months Ended
Jun. 18, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Derivative Instruments 2016 Interest Rate Cap Agreement In June 2016, the Company entered into an interest rate cap agreement that became effective July 1, 2016, to hedge cash flows associated with interest rate fluctuations on variable rate debt, with a termination date of March 31, 2020 ("2016 Interest Rate Cap Agreement"). The 2016 Interest Rate Cap Agreement had an initial notional amount of $70.0 million of the 2015 Senior Credit Facility that effectively converted that portion of the outstanding balance of the 2015 Senior Credit Facility from variable rate debt to capped variable rate debt, resulting in a change in the applicable interest rate from an interest rate of one-month LIBOR plus the applicable margin (as provided by the 2015 Senior Credit Facility) to a capped interest rate of 2.00% plus the applicable margin. As of June 18, 2019, one-month LIBOR was 2.44%. During the twelve and twenty-four weeks ended June 18, 2019, the Company received payments totaling approximately $0.1 million and $0.2 million, respectively, related to the 2016 Interest Rate Cap Agreement. During the period from July 1, 2016 through June 18, 2019, the 2016 Interest Rate Cap Agreement had no hedge ineffectiveness. To ensure the effectiveness of the 2016 Interest Rate Cap Agreement, the Company elected the one-month LIBOR rate option for its variable rate interest payments on term balances equal to or in excess of the applicable notional amount of the interest rate cap agreement as of each reset date. The reset dates and other critical terms on the term loans perfectly match with the interest rate cap reset dates and other critical terms during the twenty-four weeks ended June 18, 2019. During the twelve weeks and twenty-four weeks ended June 18, 2019, the Company reclassified approximately $37,000 and $0.1 million, respectively, of interest expense related to the hedges of these transactions into earnings. As of June 18, 2019, the Company was hedging forecasted transactions expected to occur through March 31, 2020. Assuming interest rates at June 18, 2019 remain constant, $0.2 million of interest expense related to hedges of these transactions is expected to be reclassified into earnings over the next 9 months. The Company intends to ensure that this hedge remains effective, therefore, approximately $0.2 million is expected to be reclassified into interest expense over the next 9 months. The effective portion of the 2016 Interest Rate Cap Agreement through June 18, 2019 was included in accumulated other comprehensive income.

Derivative Instruments

2016 Interest Rate Cap Agreement

In June 2016, the Company entered into an interest rate cap agreement that became effective July 1, 2016, to hedge cash flows associated with interest rate fluctuations on variable rate debt, with a termination date of March 31, 2020 ("2016 Interest Rate Cap Agreement"). The 2016 Interest Rate Cap Agreement had an initial notional amount of $70.0 million of the 2015 Senior Credit Facility that effectively converted that portion of the outstanding balance of the 2015 Senior Credit Facility from variable rate debt to capped variable rate debt, resulting in a change in the applicable interest rate from an interest rate of one-month LIBOR plus the applicable margin (as provided by the 2015 Senior Credit Facility) to a capped interest rate of 2.00% plus the applicable margin. As of June 18, 2019, one-month LIBOR was 2.44%. During the twelve and twenty-four weeks ended June 18, 2019, the Company received payments totaling approximately $0.1 million and $0.2 million, respectively, related to the 2016 Interest Rate Cap Agreement. During the period from July 1, 2016 through June 18, 2019, the 2016 Interest Rate Cap Agreement had no hedge ineffectiveness.

To ensure the effectiveness of the 2016 Interest Rate Cap Agreement, the Company elected the one-month LIBOR rate option for its variable rate interest payments on term balances equal to or in excess of the applicable notional amount of the interest rate cap agreement as of each reset date. The reset dates and other critical terms on the term loans perfectly match with the interest rate cap reset dates and other critical terms during the twenty-four weeks ended June 18, 2019.

During the twelve weeks and twenty-four weeks ended June 18, 2019, the Company reclassified approximately $37,000 and $0.1 million, respectively, of interest expense related to the hedges of these transactions into earnings. As of June 18, 2019, the Company was hedging forecasted transactions expected to occur through March 31, 2020. Assuming interest rates at June 18, 2019 remain constant, $0.2 million of interest expense related to hedges of these transactions is expected to be reclassified into earnings over the next 9 months. The Company intends to ensure that this hedge remains effective, therefore, approximately $0.2 million is expected to be reclassified into interest expense over the next 9 months.

The effective portion of the 2016 Interest Rate Cap Agreement through June 18, 2019 was included in accumulated other comprehensive income.