Other Operating Expenses (in thousands):
|Three Months Ended||Years Ended|
|December 31,||December 31,|
|Marketing, general and administrative expenses||$||8,253||$||4,974||$||28,426||$||22,114|
|Non-cash stock compensation expense - MG&A||8,282||3,688||25,657||13,579|
|Total marketing, general and administrative expenses||$||16,535||$||8,662||$||54,083||$||35,693|
Fourth quarter and fiscal year 2012 marketing, general and administrative expenses increased due primarily to an increase in non-cash stock compensation charges resulting from an increase in the average grant date fair value of restricted shares expensed and an increase in restricted shares expensed in the 2012 periods, as compared to the respective prior year periods, a net increase in licensing, business development, and engineering personnel costs since the end of the prior year period and an increase in variable performance-based compensation costs.