Table:
text: 2007–08 Atlanta Thrashers season
December
December
Date_ Visitor Score Home Decision Attendance Record
December 20 Ottawa 2 – 3 Atlanta Lehtonen 14085 16–17–1
December 22 Montreal 2 – 3 Atlanta Lehtonen 17153 17–17–1
December 23 Atlanta 3 – 2 St. Louis Lehtonen 17731 18–17–1
December 26 Atlanta 0 – 2 Columbus Lehtonen 15726 18–18–1
December 27 Florida 5 – 3 Atlanta Lehtonen 16080 18–19–1
December 29 Boston 0 – 5 Atlanta Lehtonen 18545 19–19–1
December 31 Atlanta 2 – 5 Boston Lehtonen 17565 19–20–1

text: 2007–08 Atlanta Thrashers season
December
December
Date_ Visitor Score Home Decision Attendance Record
December 1 Atlanta 4 – 0 NY Islanders Lehtonen 15355 12–13–0
December 2 Atlanta 2 – 3 New Jersey Hedberg 14978 12–13–1
December 5 NY Islanders 3 – 4 Atlanta Lehtonen 14018 13–13–1
December 7 NY Rangers 2 – 4 Atlanta Hedberg 18204 14–13–1
December 8 Atlanta 3 – 6 Washington Lehtonen 14014 14–14–1
December 12 Boston 5 – 3 Atlanta Hedberg 14265 14–15–1
December 14 Toronto 4 – 0 Atlanta Lehtonen 16424 14–16–1
December 15 Atlanta 3 – 7 Ottawa Hedberg 20082 14–17–1
December 18 Tampa Bay 2 – 6 Atlanta Lehtonen 14060 15–17–1

Question: What was the date of the Lehtonen decision game attended by more than 17,731 people for the Atlanta Thrashers 2007-08 season in December?