while(<DATA>) {
    print /^([-\w' ]+\(\d+\)(:[-\w' ]+\(\d+\))*)$/ ? "match capture >$1< $_\n" : 
                                                     "no match $_\n";
}
__DATA__
namexx(10)
name2(8):name3(3)
name4(12):name5(3):name6(3)
O'Keefe(1)
Jo-Anne Smith(2)
F$%^Y@^(1)
name(1)name(3)
name(1)::name(3)