0000000001
us-gaap:CommonClassAMember
2010-01-01
2010-12-31
0000000001
us-gaap:CommonClassBMember
2010-01-01
2010-12-31
0000000001
us-gaap:CommonClassAMember
2010-12-31
0000000001
us-gaap:CommonClassBMember
2010-12-31
shares
ABCX
ABCY
1000000
1000000