EARNINGS PER COMMON SHARE - Computations for Basic and Diluted Earnings/(Loss) (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Basic:
Net income	$ 12,574us-gaap_NetIncomeLoss	$ 749us-gaap_NetIncomeLoss
Less: income allocated to participating securities	(272)	0
Less: participating securities dividends	(173)	0
Less: preferred stock dividends	(910)	(910)
Net income (loss) allocated to common stockholders	11,219	(161)
Weighted average common shares outstanding (in shares)	37,873,253	20,199,025
Basic earnings per common share (in usd per share)	$ 0.30us-gaap_EarningsPerShareBasic	$ (0.01)us-gaap_EarningsPerShareBasic
Diluted:
Net income allocated to common shareholders	11,219	(161)
Additional income allocation for class B dilutive shares	0us-gaap_DilutiveSecurities	0us-gaap_DilutiveSecurities
Adjusted net income (loss) allocated to common stockholders	11,219	(161)
Add: Dilutive effects of purchase contracts	0	0
Add: Dilutive effects of warrants	283,911	0
Average shares and dilutive common shares (in shares)	38,304,666	20,199,025
Diluted earnings per common share (in usd per share)	$ 0.29us-gaap_EarningsPerShareDiluted	$ (0.01)us-gaap_EarningsPerShareDiluted
Class A Common Stock
Basic:
Net income	12,560	727
Less: income allocated to participating securities	(272)	0
Less: participating securities dividends	(173)	0
Less: preferred stock dividends	(909)	(883)
Net income (loss) allocated to common stockholders	11,206	(156)
Weighted average common shares outstanding (in shares)	37,831,035	19,609,017
Basic earnings per common share (in usd per share)	$ 0.30	$ (0.01)
Diluted:
Net income allocated to common shareholders	11,206	(156)
Additional income allocation for class B dilutive shares	(85)	0
Adjusted net income (loss) allocated to common stockholders	11,121	(156)
Add: Dilutive effects of purchase contracts	0	0
Add: Dilutive effects of warrants	0	0
Average shares and dilutive common shares (in shares)	37,978,537	19,609,017
Diluted earnings per common share (in usd per share)	$ 0.29	$ (0.01)
Class B Common Stock
Basic:
Net income	14	22
Less: income allocated to participating securities	0	0
Less: participating securities dividends	0	0
Less: preferred stock dividends	(1)	(27)
Net income (loss) allocated to common stockholders	13	(5)
Weighted average common shares outstanding (in shares)	42,218	590,008
Basic earnings per common share (in usd per share)	$ 0.30	$ (0.01)
Diluted:
Net income allocated to common shareholders	13	(5)
Additional income allocation for class B dilutive shares	85	0
Adjusted net income (loss) allocated to common stockholders	$ 98	$ (5)
Add: Dilutive effects of purchase contracts	0	0
Add: Dilutive effects of warrants	283,911	0
Average shares and dilutive common shares (in shares)	326,129	590,008
Diluted earnings per common share (in usd per share)	$ 0.30	$ (0.01)
Restricted Stock Units (RSUs)
Diluted:
Add: Dilutive effects of restricted stock units and stock options	146,876	0
Restricted Stock Units (RSUs) \| Class A Common Stock
Diluted:
Add: Dilutive effects of restricted stock units and stock options	146,876	0
Restricted Stock Units (RSUs) \| Class B Common Stock
Diluted:
Add: Dilutive effects of restricted stock units and stock options	0	0
Stock Option
Diluted:
Add: Dilutive effects of restricted stock units and stock options	626	0
Stock Option \| Class A Common Stock
Diluted:
Add: Dilutive effects of restricted stock units and stock options	626	0
Stock Option \| Class B Common Stock
Diluted:
Add: Dilutive effects of restricted stock units and stock options	0	0

Distributed Earnings (Loss) Allocated to Participating Securities, Basic

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Net Income allocated to common shareholders after income allocation to participating securities.

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Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from the assumed exercise stock options, restrictive stock units (RSUs), convertible preferred stock of an employee stock ownership plan (ESOP), and other dilutive convertible securities.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of call options and warrants using the treasury stock method.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of equity unit purchase agreements using the treasury stock method.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Net Income or Loss Available to Common Stockholders plus adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions.

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Amount of undistributed earnings (loss) allocated to participating securities for the basic earnings (loss) per share or per unit calculation under the two-class method.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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