Table:
|  | Balance at Beginning of Period | Charged to Costs and Expenses | Write-offs | Balance at End of Period |
| --- | --- | --- | --- | --- |
| Allowance for Doubtful Accounts: |  |  |  |  |
| Fiscal Year 2019 | $— | $— | $5 | $— |
| Fiscal Year 2018 | $— | $— | $— | $— |
| Fiscal Year 2017 | $— | $— | $— | $— |
| Allowance for Deferred Tax Assets: |  |  |  |  |
| Fiscal Year 2019 | $54,913 | $3,227 | $— | $58,140 |
| Fiscal Year 2018 | $55,931 | $— | $(1,018) | $54,913 |
| Fiscal Year 2017 | $79,150 | $— | $(23,219) | $55,931 |
Paragraphs:
ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
(a) 1. Financial Statements
Reference is made to Item 8 for a list of all financial statements and schedules filed as a part of this Report.
2. Financial Statement Schedules
QuickLogic Corporation
Valuation and Qualifying Accounts
(in thousands)
All other schedules not listed above have been omitted because the information required to be set forth therein is not applicable or is shown in the financial statements or notes hereto.
Question:
What is the average at the beginning of the period in fiscal year 2018 and 2019?
Answer: ($55931 + $54913)/2  = 55422