Summary of Significant Accounting Policies Computation of Basic and Diluted net loss per share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Computation of Basic and Diluted net loss Per Share [Abstract]
Net Income (Loss) Attributable to Parent	$ (12,818)	$ (13,000)	$ (31,312)
Weighted Average Number of Shares Outstanding, Basic	42,650,000	42,083,000	41,365,000
Shares Used in Computation of Basic Earning Loss Per Share	42,650,000	42,083,000	41,365,000
Weighted Average Number Diluted Shares Outstanding Adjustment	0	0	0
Weighted Average Number of Shares Outstanding, Diluted	42,650,000	42,083,000	41,365,000
Earnings Per Share, Basic	$ (0.30)	$ (0.31)	$ (0.76)
Earnings Per Share, Diluted	$ (0.30)	$ (0.31)	$ (0.76)
Stock Awards Excluded from Computation of Earnings Per Share Amount	5,868,929	5,625,065	6,476,817