10. Foreign currency exchange contracts and hedging

As of June 30, 2019 and June 30, 2018, the Company’s total non-designated and designated derivative contracts had notional amounts totaling approximately $2,388 and $8,926, respectively, and $3,072 and $12,477, respectively. These contracts were comprised of offsetting contracts with the same counterparty, each expires within one to six months. During the six months ended June 30, 2019 and June 30, 2018, these contracts had, net of tax, an unrealized loss of $76 and an unrealized gain of $543, 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, 2019 and June 30, 2018, there were no ineffective portions relating to these hedges and the hedges remained effective through their respective settlement dates. As of June 30, 2019, the Company had thirteen designated hedges and three non-designated hedges. As of June 30, 2018, the Company had twenty-one designated hedges and four non-designated hedges.