CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Gold and silver bullion, market value (in dollars)	$ 1,416	$ 2,062
Common stock, par value	$ 0	$ 0
Common stock, shares authorized	500,000	500,000
Common, shares issued	261,302	212,646
Common, shares outstanding	261,302	212,646
Exchangeable, shares issued	35,812	83,379
Exchangeable, shares outstanding	35,812	83,379