Table:
|  | For the Twelve Months Ended December 31, |  |
| --- | --- | --- |
|  | 2019 | 2018 |
|  | (Dollars in thousands) |  |
| Cash and cash equivalents | 9,472 | 7,554 |
| Accounts receivable, net of allowance for doubtful accounts | 18,581 | 12,327 |
| Inventories, net | 12,542 | 9,317 |
| Prepaid expenses | 3,276 | 1,078 |
| Other current assets | 10,453 | 682 |
| Accounts payable | (18,668) | (9,166) |
| Accrued expenses | (22,133) | (9,051) |
| Current operating lease liabilities | (1,185) | — |
| Total Working Capital | $12,338 | $12,741 |
Paragraphs:
The following table sets forth, for the periods indicated, our working capital:
Working Capital consists of current assets net of current liabilities. Working capital decreased $0.4 million to $12.3 million at December 31, 2019 compared with $12.7 million at December 31, 2018. The decrease was primarily a result of an increase of cash, accounts receivable, and inventory offset by an increase in accounts payable, accrued expenses and current operating lease liabilities.
We normally carry three to four weeks of finished goods inventory. The average duration of our accounts receivable is approximately 25 days.
For the year ended December 31, 2019 our capital resources consisted of primarily $9.5 million cash on hand and $33.0 million available under our credit facilities, net of $2.0 million reserved for two letters of credit. For the year ended December 31, 2018, our capital resources consisted primarily of $7.5 million cash on hand and $30.0 million available under our credit facilities. The Credit Facilities will mature in May 2024.
We borrowed $72.3 million under our credit facilities during 2019, of which $18.5 million was repaid prior to the end of the year. As of December 31, 2019, we had $54.5 million of debt outstanding (including $0.7 million of debt issuance costs) under our credit facilities. There was no debt outstanding under the credit facilities as of December 31, 2018.
Question:
What is the average duration of the accounts receivables?
Answer: 25 days