CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Preferred stock, no par value (in dollars per share)
Preferred stock, shares authorized	5,000,000	5,000,000
Common stock, no par value (in dollars per share)
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	58,436,345	57,369,683
Common stock, shares outstanding	58,436,345	57,369,683
Series A convertible preferred stock
Preferred stock, shares authorized	25,000	25,000
Preferred stock, shares issued	18,158	18,158
Preferred stock shares surrendered	18,158	18,158
Preferred stock, shares outstanding	0	0