Table:
Year Ended December 31,

(In thousands)	2019	2018	2017

Restricted stock	$ 4,013	$ 3,249	$ 1,986

Performance shares	2,823	1,870	780

Total	$ 6,836	$ 5,119	$ 2,766

Answer the following question based on the table plus the background text, answer the question. You may include your reasoning, but be sure to finish with a JSON block exactly like {"answer": ["ANSWER"], "scale": "SCALE"} (leave "scale" empty if not applicable).

Supporting text:
Share-based Compensation Expense The following table summarizes total compensation costs recognized for share-based payments during the years ended December 31, 2019, 2018 and 2017:
Income tax benefits related to share-based compensation of approximately $1.8 million, $1.3 million and $1.1 million were recorded for the years ended December 31, 2019, 2018 and 2017, respectively. Share-based compensation expense is included in “selling, general and administrative expenses” in the accompanying consolidated statements of operations.
As of December 31, 2019, total unrecognized compensation cost related to non-vested RSAs and PSAs was $10.6 million and will be recognized over a weighted-average period of approximately 1.7 years.

Question: What was the average performance shares for 2017-2019?

(2,823 + 1,870 + 780) / 3, therefore {"answer": "1824.33", "scale": "thousand"}