The Company’s Performance Unit activity and related information is presented below: Number of Performance Units Weighted Average Grant Date Fair Value Per Performance Unit Nonvested balance at December 31, 2013 ......... 78,057 $106.45 Granted .................................... 45,729 126.84 Vested ..................................... — — Forfeited ................................... — — Nonvested balance at December 31, 2014 ......... 123,786 $113.98 Director Stock Compensation Awards Performance Unit compensation expense for the year ended December 31, 2014 totaled $3.1 million, $1.6 million for 2013 and $0.2 million for 2012. As of December 31, 2014, there was $9.2 million (based on 100% result rate) of total unrecognized compensation expense related to nonvested Performance Units which is to be recognized over a weighted average period of 1.6 years. There were 8,144 anti-dilutive performance share units at December 31, 2014. In June 2014, the Board of Directors authorized a stock compensation program for the directors pursuant to the 2004 Plan. Under this program, the Directors may elect to receive all or a portion of their fees in the form of restricted directors stock awards (“DSA”) in an amount equal to 125% of the fees in lieu of cash. The awards are made quarterly on the first business day after the end of each calendar quarter and vest on January 1 on the second year after the grant date. The Company DSA activity for December 31, 2014 is presented below: Director stock compensation awards expense for 2014 was $21,600. There was $85,500 of unrecognized compensation expense related to nonvested DSAs, which is expected to be recognized over a weighted average period of one year. There were 303 anti-diluted DSA shares on December 31, 2014. DSA Number of Shares Weighted Average Grant Date Fair Value Per Performance Unit Nonvested balance at December 31, 2013 ....... — $ — Granted .................................. 1,204 89.40 Vested ................................... — — Forfeited ................................. — — Nonvested balance at December 31, 2014 ....... 1,204 $89.40 63