12. Commitments and Contingencies Lease Commitments The Company leases its corporate office and various of its restaurant locations under non-cancelable operating leases. These leases have initial lease terms of between ten and twenty years and generally can be extended in five-year increments. These leases generally provide for minimum annual rental payments that are subject to periodic escalations that are fixed or in some cases, based upon increases in specific inflation indexes as stipulated in the non-cancelable operating lease. Certain lease arrangements have contingent rental payments based on net sales thresholds per the lease agreement. Accrued liability for contingent rent was $165 and $197 as of October 1, 2017 and January 1, 2017, respectively. These balances are included in accounts payable and accrued expenses in the consolidated balance sheets. Future minimum lease payments for non-cancelable leases (excluding contingent rental payments) are as follows: 2017 (remaining) $ 5,335 2018 22,183 2019 21,769 2020 21,383 2021 20,925 2022 19,419 Thereafter 86,184 Total $ 197,198 The following table presents the components of rent expense, attributable to non-cancelable operating leases for the Companys corporate office and restaurant locations, for the thirteen and thirty-nine week periods ended October 1, 2017 and October 2, 2016. Favorable lease assets and liabilities are amortized to rent expense on a straight-line basis over each respective operating lease term. The amortization of favorable lease assets increases rent expense, while the amortization of unfavorable lease liabilities decreases rent expense. Thirteen Week Periods Ended Thirty-Nine Week Periods Ended October 1, October 2, October 1, October 2, 2017 2016 2017 2016 Rent expense $ 6,128 $ 5,457 $ 17,718 $ 15,336 Contingent rent expense 71 55 247 154 Amortization lease assets (28 ) (46 ) (120 ) (141 ) Total rent expense $ 6,171 $ 5,466 $ 17,845 $ 15,349 Litigation The Union of Workers in Hotels, Apart-Hotels, Motels, Flats, Restaurants, Bars,