Computation of Basic and Diluted Earnings per Common Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Denominator:
Basic weighted average shares outstanding	224,456,934	176,481,592	220,104,481	175,619,586
Basic undistributed net income (loss) from continuing operations per share--attributable to common shares	$ 0.06	$ 0.11	$ 0.03	$ 0.06
Diluted weighted average shares outstanding	229,069,397	179,553,341	226,180,298	178,678,090
Diluted undistributed net income (loss) from continuing operations attributable to common shares	$ 0.06	$ 0.11	$ 0.02	$ 0.06
Basic Share
Numerator:
Undistributed net income (loss) from continuing operations	$ 15,137	$ 15,114	$ 5,868	$ (11,550)
Less:
Dividends declared on redeemable preferred stock	0	2,652	0	5,304
Accretion of redeemable preferred stock	0	1,007	0	1,989
Basic undistributed net income (loss) from continuing operations attributable to common shares	14,551	9,535	5,555	(18,843)
Denominator:
Basic weighted average shares outstanding	224,457,000	176,482,000	220,104,000	175,620,000
Basic undistributed net income (loss) from continuing operations per share--attributable to common shares	$ 0.06	$ 0.05	$ 0.03	$ (0.11)
Diluted Share
Numerator:
Undistributed net income (loss) from continuing operations	15,137	15,114	5,868	(11,550)
Less:
Dividends declared on redeemable preferred stock	0	2,652	0	5,304
Accretion of redeemable preferred stock	0	1,007	0	1,989
Basic undistributed net income (loss) from continuing operations attributable to common shares	14,562	9,562	5,563	(18,843)
Denominator:
Basic weighted average shares outstanding	224,457,000	176,482,000	220,104,000	175,620,000
Effect of dilutive stock options and warrants	4,612,000	3,072,000	6,076,000	0
Diluted weighted average shares outstanding	229,069,000	179,554,000	226,180,000	175,620,000
Diluted undistributed net income (loss) from continuing operations attributable to common shares	$ 0.06	$ 0.05	$ 0.02	$ (0.11)
Warrants | Basic Share
Less:
Participation rights of the Company Warrants in undistributed earnings	573	1,901	306	0
Warrants | Diluted Share
Less:
Participation rights of the Company Warrants in undistributed earnings	562	1,874	298	0
Restricted Stock | Basic Share
Less:
Participation rights of unvested restricted stock in undistributed earnings, Basic	13	19	7	0
Restricted Stock | Diluted Share
Less:
Participation rights of unvested restricted stock in undistributed earnings, Diluted	$ 13	$ 19	$ 7	$ 0