This excerpt taken from the CCRN DEF 14A filed Apr 7, 2008.
OPTION EXERCISES AND STOCK VESTED IN 2007
Value realized represents the difference between the market price of the underlying shares at exercise and the exercise price of the options. Mr. Boshart has effectively deferred the amount realized by holding the 21,340 shares. Mr. Hensel has deferred $382,112 of value by holding 48,600 shares.