Find the K

Let $k$ be a positive real number and let $A\quad =\quad \left[ \begin{matrix} 2k-1 & 2\sqrt { k } & 2\sqrt { k } \\ 2\sqrt { k } & 1 & -2k \\ -2\sqrt { k } & 2k & -1 \end{matrix} \right]$ and $B\quad =\quad \left[ \begin{matrix} 0 & 2k-1 & \sqrt { k } \\ 1-2k & 0 & 2\sqrt { k } \\ -\sqrt { k } & -2\sqrt { k } & 0 \end{matrix} \right] .$ If $\text{det}(adj\quad A)\quad +\quad \text{det}(adj\quad B)\quad =\quad { 10 }^{ 6 },$ what is the value of $[k]?$

Note: $[k]$ is the greatest integer less than or equal to $k.$