MLE of a symmetric uniform half-width

Let $X_1,X_2,…,X_{10}$ be a random sample from a $U(-\theta,\theta)$ distribution, where $\theta\in(0,\infty)$. Let $X_{(10)}=\max\{X_1,X_2,…,X_{10}\}$ and $X_{(1)}=\min\{X_1,X_2,…,X_{10}\}$. If the observed values of $X_{(10)}$ and $X_{(1)}$ are $8$ and $-10$, respectively, then the maximum likelihood estimate of $\theta$ is equal to __________ (answer in integer)