Debt Convertible Notes (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended	12 Months Ended					12 Months Ended			12 Months Ended			12 Months Ended
	Apr. 26, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Apr. 25, 2012	Dec. 15, 2011	Dec. 31, 2012 New Revolving Credit Facility [Member]	Dec. 31, 2012 Secured Notes Due in 2016 - New [Member]	Jun. 12, 2012 Secured Notes Due in 2016 - New [Member]	Dec. 31, 2012 Indenture Agreement, December 15 2011	Dec. 20, 2011 Indenture Agreement, December 15 2011	Dec. 15, 2011 Indenture Agreement, December 15 2011	Dec. 31, 2012 Number of Trading-Days as Defined in the Agreement [Member]	Dec. 31, 2012 Business-Days After Any Defined Consecutive Trading-Day Period in Which the Trading Price Per Note for Each Day of that Measurement Period Was at a Stated % of the Last Reported Sale Price [Member]	Dec. 31, 2012 During Any Calendar Quarter If the Last Sales Price of the Common Stock, for a consecutive number of days, is Equal to or Greater Than Stated Percentage, Consecutive Number of Days
Debt Instrument [Line Items]
Convertible Notes Principal Amount		$ 57,500	$ 57,500								$ 7,500	$ 50,000
Convertible debt issued at a percentage of face value, percentage										100.00%
Term of exercise option										30 days
Option to purchase additional principal amount of convertible notes										7,500
Maturity date							Dec. 15, 2015	Dec. 15, 2016		Dec. 15, 2017
Stated interest rate on debt								12.75%	12.75%	7.00%
Interest		34,051	7,234	4,392				28,688		4,025
Conversion rate, shares per principal amount of convertible notes, shares										97.2384
Conversion rate, principal amount of convertible notes for shares, principal amount										1
Conversion price		$ 10.28								$ 10.28
Date at which holders may convert their convertible notes at their option										preceding June 15, 2017
Scenarios in which the holders of convertible notes can convert, days													5 days	20 days	30 days
Trading price per note for each day of that measurement period										less than 98%
Last reported sale price of the company's common stock										equal to or greater than 130%
Call of convertible notes for redemption										on or after December 20, 2015
Date on which convertible notes will be convertible										Jun. 15, 2017
Option to elect out of conversion If issuance would result in a stated increase in common stock outstanding, stated percentage increase		19.99%
Derivative liability for conversion feature associated with convertible debt		0				22,330
Effective interest percentage			17.78%
Derivative liability for conversion feature associated with convertible debt			26,440
Plan to issue additional share of common stock, stated as a percentage of common stock outstanding	20.00%
Common Stock, Shares Authorized	60,000,000	60,000,000	30,000,000		30,000,000
Embeded conversion option, value	42,037
Embedded conversion option tax benefit	$ 8,285	$ 8,285
Upon fundamental change, percentage of principal amount of convertible notes the company would be required to repurchase		100.00%
Date of redemption								On or after December 15, 2014		On or after December 20, 2015
Minimum sale price of common stock		135.00%
Period of trading days		20 or more
Period of consecutive trading days		5 days
Redemption price		100.00%