5. Equity Incentive Plan

There were no new equity awards granted during the three months ended June 30, 2018 and 2017. The amortization expense associated with stock options during the three months ended June 30, 2018 and 2017 was $50 thousand and $179 thousand, respectively. The amortization expense associated with stock options during the six months ended June 30, 2018 and 2017 was $87 thousand and $326 thousand, respectively. The unamortized cost of the options at June 30, 2018 was $137 thousand, to be recognized over a weighted-average remaining life of 0.4 years. At June 30, 2018 and December 31, 2017, there were 442,083 and 375,417 split-adjusted options available to exercise, respectively. There was no intrinsic value associated with the options as of June 30, 2018. The weighted-average remaining contractual life of the options outstanding is 6.7 years.