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Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Condensed Condensed Consolidated Balance Sheets [Abstract]
Development Stage Enterprise, Deficit Accumulated During Development Stage	$ 183,746	$ 135,325
Shareholders' equity:
Common stock, no par value	$ 0
Capital stock, shares outstanding (in shares)	81,788,835	81,563,498

X

- Definition

Issuance value per share of no-par value common stock; generally not indicative of the fair market value per share.

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