10. Foreign currency exchange contracts and hedging

As of June 30, 2021 and June 30, 2020, the Company’s total non-designated and designated derivative contracts had notional amounts totaling approximately $2,353 and $38,516, respectively, and $3,152 and $12,278, respectively. These contracts were comprised of offsetting contracts with the same counterparty, each expires within one to eighteen months. During the six months ended June 30, 2021 and June 30, 2020, these contracts had, net of tax, unrealized gains of $1,161 and $390, respectively.

The nonperformance risk of the Company and the counterparty did not have a material impact on the fair value of the derivatives. During the six months ended June 30, 2021 and June 30, 2020, there were no ineffective portions relating to these hedges and the hedges remained effective through their respective settlement dates. As of June 30, 2021, the Company had twenty-eight designated hedges and three non-designated hedges. As of June 30, 2020, the Company had five designated hedges and one non-designated hedge.