| http://www.w3.org/ns/prov#value | - These obligations represent contracts and other commitments that are known and non-cancellable:Payments Due by Year (000s) 2013 2014 2015 2016 2017 and Thereafter TotalOperating leases $2,545 $2,168 $526 $- $- $5,239Flow-through obligations(2) - 42,667 - - - 42,667Firm transportation agreements 32,355 25,326 14,449 2,557 20 74,707Bank debt(1) - - 396,023 - - 396,023 $34,900 $70,161 $410,998 $2,557
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