Debt (Tables)

12 Months Ended

Dec. 31, 2012

Debt Disclosure [Abstract]

Schedule of Debt

	For the years ended December 31,
	2012		2011
Current debt:
Equipment financing credit facility	$	6,968	$	7,036
Capital lease	—		224
4% Convertible Debentures	—		121,199
Total current debt	$	6,968	$	128,459
Long term debt:
Equipment financing credit facility	$	11,232	$	10,759
5% Convertible Debentures	99,275		—
Total long term debt	$	110,507	$	10,759

Schedule of payments on outstanding debt

Schedule of payments on outstanding debt as of December 31, 2012:

Debt	2013		2014		2015		2016		2017		Maturity
Equipment financing loans
principal	$	6,968	$	4,732	$	3,798	$	2,208	$	494	2012 to 2017
interest	1,003		604		322		120		9
5% Convertible Debentures
principal	—		—		—		—		77,490		June 1, 2017
interest	3,875		3,875		3,875		3,875		1,937
Total	$	11,846	$	9,211	$	7,995	$	6,203	$	79,930