Table:
|  | December 31, |  |
| --- | --- | --- |
|  | (in thousands) |  |
|  | 2019 | 2018 |
| Government segment: |  |  |
| Billed | $11,608 | $9,100 |
| Advanced billings | (608) | (563) |
|  | 11,000 | 8,537 |
| Restaurant/Retail segment: |  |  |
| Accounts receivable - net | 30,774 | 17,682 |
|  | $41,774 | $26,219 |
Paragraphs:
Note 6 — Accounts Receivable, net
The Company’s net accounts receivable consists of:
At December 31, 2019 and 2018, the Company had recorded allowances for doubtful accounts of $1.8 million and $1.3 million, respectively, against Restaurant/Retail segment accounts receivable. Write-offs of accounts receivable during fiscal years 2019 and 2018 were $0.3 million and $0.4 million, respectively. The bad debt expense which is recorded in the consolidated statements of operations was $0.8 million and $0.8 million in 2019 and 2018, respectively.
Receivables recorded as of December 31, 2019 and 2018 all represent unconditional rights to payments from customers.
Question:
What is the change in Government segment: Advanced billings between December 31, 2018 and 2019?
Answer: 608-563 = 45