Renovation work on the arena was delayed due to a sales tax receipt shortfall during the 2008–10 economic crisis; eventual tax receipts totaled $103.5 million rather than the projected $121 million. The shortfall was accommodated by revising plans for certain features of the arena expansion project, including limiting the size of a new glass entryway, and eliminating a practice court planned for above the delivery entrance of the arena. Major construction work on the arena expansion was also delayed from the summer of 2010 to the summer of 2011. Similar revisions were made to the plans for the Thunder's separate practice facility, for a total cost savings of approximately $14 million. The Thunder's practice facility completion date was similarly pushed back to approximately March 2011.