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Stock Option Plan
3 Months Ended
Mar. 31, 2014
Stock Option Plan
5. Stock Option Plan

For the three month periods ended March 31, 2014 and 2013, the Company did not recognize any compensation expense related to its stock option plans. Expense is recognized ratably over the five-year vesting period of the options. At March 31, 2014, there was no unrecognized compensation expense related to nonvested stock options to be recognized over the remaining vesting period. The Black-Scholes option pricing model was used to determine the fair value of the options granted in prior periods.