EARNINGS PER COMMON SHARE - Computations for Basic and Diluted Earnings/(Loss) (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Schedule of Earnings Per Share [Line Items]
Income from continuing operations	$ 9,376	$ 17,306
Less: income allocated to participating securities	(163)	(360)
Less: participating securities dividends	(203)	(186)
Less: preferred stock dividends	(5,113)	(4,575)
Income from continuing operations allocated to common stockholders	3,897	12,185
Income from discontinued operations	7,825	2,381
Net income available to common stockholders	$ 11,722	$ 14,566
Weighted average common shares outstanding (in shares)	49,991,186	39,996,752
Add: Dilutive effects of warrants (in shares)	346,058	479,025
Average shares and dilutive common shares (in shares)	50,754,145	40,751,616
Basic earnings per common share
Income from continuing operations (in usd per share)	$ 0.08	$ 0.30
Income from discontinued operations (in usd per share)	0.15	0.06
Net income (in usd per share)	0.23	0.36
Diluted earnings per common share
Income from continuing operations (in usd per share)	0.08	0.30
Income from discontinued operations (in usd per share)	0.15	0.06
Net income (in usd per share)	$ 0.23	$ 0.36
Restricted Stock Units (RSUs)
Schedule of Earnings Per Share [Line Items]
Add: Dilutive effects of restricted stock units and stock options (in shares)	209,395	138,644
Stock Option
Schedule of Earnings Per Share [Line Items]
Add: Dilutive effects of restricted stock units and stock options (in shares)	207,506	137,195
Class A Common Stock
Schedule of Earnings Per Share [Line Items]
Income from continuing operations	$ 9,338	$ 17,284
Less: income allocated to participating securities	(162)	(360)
Less: participating securities dividends	(202)	(186)
Less: preferred stock dividends	(5,092)	(4,569)
Income from continuing operations allocated to common stockholders	3,882	12,169
Income from discontinued operations	7,793	2,378
Net income available to common stockholders	$ 11,675	$ 14,547
Weighted average common shares outstanding (in shares)	49,788,421	39,946,412
Add: Dilutive effects of warrants (in shares)	346,058	479,025
Average shares and dilutive common shares (in shares)	50,551,380	40,701,276
Basic earnings per common share
Income from continuing operations (in usd per share)	$ 0.08	$ 0.30
Income from discontinued operations (in usd per share)	0.15	0.06
Net income (in usd per share)	0.23	0.36
Diluted earnings per common share
Income from continuing operations (in usd per share)	0.08	0.30
Income from discontinued operations (in usd per share)	0.15	0.06
Net income (in usd per share)	$ 0.23	$ 0.36
Class A Common Stock \| Restricted Stock Units (RSUs)
Schedule of Earnings Per Share [Line Items]
Add: Dilutive effects of restricted stock units and stock options (in shares)	209,395	138,644
Class A Common Stock \| Stock Option
Schedule of Earnings Per Share [Line Items]
Add: Dilutive effects of restricted stock units and stock options (in shares)	207,506	137,195
Class B Common Stock
Schedule of Earnings Per Share [Line Items]
Income from continuing operations	$ 38	$ 22
Less: income allocated to participating securities	(1)	0
Less: participating securities dividends	(1)	0
Less: preferred stock dividends	(21)	(6)
Income from continuing operations allocated to common stockholders	15	16
Income from discontinued operations	32	3
Net income available to common stockholders	$ 47	$ 19
Weighted average common shares outstanding (in shares)	202,765	50,340
Add: Dilutive effects of warrants (in shares)	0	0
Average shares and dilutive common shares (in shares)	202,765	50,340
Basic earnings per common share
Income from continuing operations (in usd per share)	$ 0.08	$ 0.30
Income from discontinued operations (in usd per share)	0.15	0.06
Net income (in usd per share)	0.23	0.36
Diluted earnings per common share
Income from continuing operations (in usd per share)	0.08	0.30
Income from discontinued operations (in usd per share)	0.15	0.06
Net income (in usd per share)	$ 0.23	$ 0.36
Class B Common Stock \| Restricted Stock Units (RSUs)
Schedule of Earnings Per Share [Line Items]
Add: Dilutive effects of restricted stock units and stock options (in shares)	0	0
Class B Common Stock \| Stock Option
Schedule of Earnings Per Share [Line Items]
Add: Dilutive effects of restricted stock units and stock options (in shares)	0	0

Distributed Earnings (Loss) Allocated to Participating Securities, Basic

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Income (Loss) From Continuing Operations Allocated To Common Stockholders, Basic

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[Line Items] for Schedule of Earnings Per Share [Table]

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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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Amount after tax of income (loss) from continuing operations attributable to the parent.

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Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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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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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 60B
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64863997&loc=SL5780133-109256

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1505-109256

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

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