Summary of Significant Accounting Policies (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net income (loss) - numerator
Net (loss) income	$ (6,676)	$ 7,152	$ (2,875)	$ (20,443)
Less dividends to Class B shareholders - distributed earnings		(69)	(28)	(138)
Undistributed (loss) earnings	$ (6,676)	$ 7,083	$ (2,903)	$ (20,581)
Weighted average common shares outstanding - denominator
Weighted average common shares outstanding for basic earnings (loss) per share	55,271	42,698	52,644	42,677
Total diluted weighted average common shares outstanding	55,271	42,813	52,644	42,677
Class A [Member]
Weighted average common shares outstanding - denominator
Weighted average common shares outstanding for basic earnings (loss) per share	55,271	41,667	52,434	41,646
Dilutive effect of options and restricted stock units		115
Total diluted weighted average common shares outstanding	55,271	41,782	52,434	41,646
Basic
Distributed earnings
Undistributed (loss) earnings	$ (0.12)	$ 0.17	$ (0.06)	$ (0.48)
Total	$ (0.12)	$ 0.17	$ (0.06)	$ (0.48)
Diluted
Distributed earnings
Undistributed (loss) earnings		$ 0.17	$ (0.06)	$ (0.48)
Total	$ (0.12)	$ 0.17	$ (0.06)	$ (0.48)
Class B [Member]
Weighted average common shares outstanding - denominator
Weighted average common shares outstanding for basic earnings (loss) per share		1,031	210	1,031
Total diluted weighted average common shares outstanding		1,031	210	1,031
Basic
Distributed earnings		$ 0.06	$ 0.13	$ 0.13
Undistributed (loss) earnings		$ 0.17	$ (0.06)	$ (0.48)
Total		$ 0.23	$ 0.07	$ (0.35)
Diluted
Distributed earnings		$ 0.06	$ 0.13	$ 0.13
Undistributed (loss) earnings		$ 0.17	$ (0.06)	$ (0.48)
Total		$ 0.23	$ 0.07	$ (0.35)

The total amount of dividends declared in the period for each class of stock and the contractual amount of dividends (or interest on participating income bonds) that must be paid for the period (for example, unpaid cumulative dividends). Dividends declared in the current period do not include dividends declared in respect of prior-period unpaid cumulative dividends. Preferred dividends that are cumulative only if earned are deducted only to the extent that they are earned.

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