Net Loss Per Share (Details) In Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Antidilutive securities excluded from computation of earnings per share
Total	21,609	19,347	21,297	18,960
Convertible subordinated notes [Member]
Antidilutive securities excluded from computation of earnings per share
Total	9,989	9,989	9,989	9,989
Stock options [Member]
Antidilutive securities excluded from computation of earnings per share
Total	11,620	9,358	11,308	8,971

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 13, 14

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 171

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph c

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration