From the opinion:

To comply with the equal protection guarantee of Article I, Paragraph 1 of the New Jersey Constitution, the State must provide to committed same-sex couples, on equal terms, the full rights and benefits enjoyed by heterosexual married couples. The State can fulfill that constitutional requirement in one of two ways. It can either amend the marriage statutes to include same-sex couples or enact a parallel statutory structure by another name, in which same-sex couples would not only enjoy the rights and benefits, but also bear the burdens and obligations of civil marriage. If the State proceeds with a parallel scheme, it cannot make entry into a same-sex civil union any more difficult than it is for heterosexual couples to enter the state of marriage. It may, however, regulate that scheme similarly to marriage and, for instance, restrict civil unions based on age and consanguinity and prohibit polygamous
relationships.

The constitutional relief that we give to plaintiffs cannot be effectuated immediately or by this Court alone. The implementation of this constitutional mandate will require the cooperation of the Legislature. To bring the State into compliance with Article I, Paragraph 1 so that plaintiffs can exercise their full constitutional rights, the Legislature must either amend the marriage statutes or enact an appropriate statutory structure within 180 days of the date of this decision.