Computation of Basic and Diluted Earnings per Common Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended												12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011		Sep. 30, 2011		Jun. 30, 2011		Mar. 31, 2011		Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Numerator:
Undistributed net (loss) income from continuing operations													$ (92,177)	$ (5,181)	$ 21,957
Less:
Undistributed net (loss) income from continuing operations													(92,177)	(5,181)	21,957
Denominator:
Basic weighted average common shares outstanding													162,603,882	70,890,393	40,341,011
Basic (loss) income from continuing operations per share - attributable to common shares	$ (0.51)	$ 0.24	$ 0.01	$ (0.12)	$ (0.14)	[1]	$ 0.78	[1]	$ 0.03	[1]	$ 0.40	[1]	$ (0.33)	$ 0.80	$ 0.70
Numerator:
Undistributed net (loss) income from continuing operations													(92,177)	(5,181)	21,957
Less:
Undistributed net (loss) income from continuing operations													(92,177)	(5,181)	21,957
Denominator:
Basic weighted average shares outstanding													162,603,882	70,890,393	40,341,011
Diluted weighted average shares outstanding													162,603,882	70,890,393	41,189,161
Diluted (loss) income from continuing operations per share - attributable to common shares	$ (0.51)	$ 0.24	$ 0.01	$ (0.12)	$ (0.14)	[1]	$ 0.72	[1]	$ 0.03	[1]	$ 0.40	[1]	$ (0.33)	$ 0.80	$ 0.68
Basic Share
Less:
Dividends declared on redeemable preferred stock													13,778	3,646
Accretion of redeemable preferred stock													7,117	3,315
Basic undistributed net (loss) income from continuing operations - attributable to common shares													(113,072)	(12,142)	21,127
Denominator:
Basic weighted average common shares outstanding													162,604,000	70,890,000	40,341,000
Basic (loss) income from continuing operations per share - attributable to common shares													$ (0.70)	$ (0.17)	$ 0.52
Less:
Dividends declared on redeemable preferred stock													13,778	3,646
Accretion of redeemable preferred stock													7,117	3,315
Basic undistributed net (loss) income from continuing operations - attributable to common shares													(113,072)	(12,142)	21,127
Denominator:
Basic weighted average shares outstanding													162,604,000	70,890,000	40,341,000
Basic Share | Warrant
Less:
Participation rights of the Company Warrants in undistributed earnings
Less:
Participation rights of the Company Warrants in undistributed earnings
Basic Share | Restricted Stock
Less:
Participation rights of unvested restricted stock in undistributed earnings															830
Less:
Participation rights of unvested restricted stock in undistributed earnings															830
Diluted Share
Less:
Dividends declared on redeemable preferred stock													13,778	3,646
Accretion of redeemable preferred stock													7,117	3,315
Basic undistributed net (loss) income from continuing operations - attributable to common shares													(113,072)	(12,142)	21,143
Denominator:
Basic weighted average common shares outstanding													162,604,000	70,890,000	40,341,000
Less:
Dividends declared on redeemable preferred stock													13,778	3,646
Accretion of redeemable preferred stock													7,117	3,315
Basic undistributed net (loss) income from continuing operations - attributable to common shares													(113,072)	(12,142)	21,143
Denominator:
Basic weighted average shares outstanding													162,604,000	70,890,000	40,341,000
Effect of dilutive options and warrants															848,000
Diluted weighted average shares outstanding													162,604,000	70,890,000	41,189,000
Diluted (loss) income from continuing operations per share - attributable to common shares													$ (0.70)	$ (0.17)	$ 0.51
Diluted Share | Warrant
Less:
Participation rights of the Company Warrants in undistributed earnings
Less:
Participation rights of the Company Warrants in undistributed earnings
Diluted Share | Restricted Stock
Less:
Participation rights of unvested restricted stock in undistributed earnings															814
Less:
Participation rights of unvested restricted stock in undistributed earnings															$ 814

[1] The fair value of the Green Bay Option was determined using inputs that are supported by little or no market activity (a Level 3 measurement). The fair value represents an estimate of the net amount that the Company would pay if the option was transferred to another party as of the date of the valuation. The option valuation incorporates a credit risk adjustment to reflect the probability of default by the Company.