Debt (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Dec. 31, 2010
Carrying value of the Company's long term debt
Fiscal year 2013	$ 3,025
Fiscal year 2014	3,025
Fiscal year 2015	3,025
Fiscal year 2016	3,025
Fiscal year 2017	25,359
Thereafter	2,149
Total minimum payments	39,608
Less amount representing interest	(14,218)
Gross balance of long term debt	25,390
Plus derivative liability	3,875
Less unamortized debt discount	(4,187)
Total carrying value	25,078				53,994			17,166
Less: Current portion	(217)
Total carrying value, noncurrent portion	24,861	2,705	0	0	0	5,232	3,029
Term loan [Member]
Carrying value of the Company's long term debt
Fiscal year 2013	2,588
Fiscal year 2014	2,588
Fiscal year 2015	2,588
Fiscal year 2016	2,588
Fiscal year 2017	24,922
Thereafter	0
Total minimum payments	35,274
Less amount representing interest	(12,774)
Gross balance of long term debt	22,500
Plus derivative liability	3,875
Less unamortized debt discount	(4,187)
Total carrying value	22,188
Less: Current portion	0
Total carrying value, noncurrent portion	22,188
Equipment loan [Member]
Carrying value of the Company's long term debt
Fiscal year 2013	437
Fiscal year 2014	437
Fiscal year 2015	437
Fiscal year 2016	437
Fiscal year 2017	437
Thereafter	2,149
Total minimum payments	4,334
Less amount representing interest	(1,444)
Gross balance of long term debt	2,890
Plus derivative liability	0
Less unamortized debt discount	0
Total carrying value	2,890
Less: Current portion	(217)
Total carrying value, noncurrent portion	$ 2,673