THE DIXIE GROUP, INC. NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (amounts in thousands, except per share data) (Continued) Amortization expense for intangible assets is summarized as follows: Accrued expenses are summarized as follows: 2020 2019 2018 Customer relationships $ — $ —  $ 16  Rug design coding — —  14  Trade names — —  275  Amortization expense $ — $ —  $ 305  NOTE 8 - ACCRUED EXPENSES 2020 2019 Compensation and benefits (1) $ 9,159 $ 8,804  Provision for customer rebates, claims and allowances 8,006 7,682  Advanced customer deposits 3,139 4,685  Outstanding checks in excess of cash 2,094 —  Other 3,567 4,247  Accrued expenses $ 25,965 $ 25,418  NOTE 9 - PRODUCT WARRANTY RESERVES The Company generally provides product warranties related to manufacturing defects and specific performance standards for its products. Product warranty reserves are included in accrued expenses in the Company's Consolidated Balance Sheets. The following is a summary of the Company's product warranty activity: (1) Includes a liability related to the Company's self-insured Workers' Compensation program. This program is collateralized by letters of credit in the aggregate amount of $2,452. Table of Contents 46 2020 2019 Product warranty reserve at beginning of period $ 1,002 $ 1,069  Warranty liabilities accrued 782 1,667  Warranty liabilities settled (790) (1,695) Changes for pre-existing warranty liabilities — (39) Product warranty reserve at end of period $ 994 $ 1,002 