CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares shares in Thousands	Jun. 30, 2016	Dec. 31, 2015
CONSOLIDATED BALANCE SHEETS
Common stock, par value	$ 0	$ 0
Common stock, shares authorized	500,000	500,000
Common, shares issued	278,239	274,421
Common, shares outstanding	278,239	274,421
Exchangeable, shares issued	20,648	24,213
Exchangeable, shares outstanding	20,648	24,213