Vegas oddsmaker likes Lions at home, not on road

The Lions currently are favored in only six of their first 15 games on the 2016 schedule, according to a Las Vegas oddsmaker.
All six of those games are at Ford Field.
The M Resort in Las Vegas has released odds for the first 16 weeks of the NFL season. (It did not have odds for the final week of the season when the Lions host the Packers.)
Here are the current odds:
Week 1: Detroit +4 at Indianapolis
Week 2: Tennessee +5 at Detroit
Week: 3: Detroit +8.5 at Green Bay
Week 4: Detroit +1.5 at Chicago
Week 5: Philadelphia +1 at Detroit
Week 6: LA Rams +1.5 at Detroit
Week 7: Washington +1 at Detroit
Week 8: Detroit +4 at Houston
Week 9: Detroit +6.5 at Minnesota
Week 10: Bye
Week 11: Jacksonville +3.5 at Detroit
Week 12: Minnesota -2.5 at Detroit
Week 13: Detroit +2 at New Orleans
Week 14: Chicago +2.5 at Detroit
Week 15: Detroit +3 at NY Giants
Week 16: Detroit +5 at Dallas