Annual report pursuant to Section 13 and 15(d)

EQUITY AND EARNINGS PER SHARE EQUITY AND EARNINGS PER SHARE - Earnings Per Share (Details)

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EQUITY AND EARNINGS PER SHARE EQUITY AND EARNINGS PER SHARE - Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Numerator for basic and diluted earnings per share:                      
Income from continuing operations after preferred dividends and noncontrolling interest                 $ 15,621 $ 62,855 $ 134,286
Income (loss) from discontinued operations, net of tax                 646 (35,189) 11,547
Income Applicable To Common Stockholders $ (5,159) $ 6,499 $ 17,019 $ (2,092) $ (10,325) $ 3,936 $ 30,532 $ 3,523 $ 16,267 $ 27,666 $ 145,833
Denominator:                      
Denominator for basic earnings per share - weighted average shares 66,579,072 66,484,962 66,426,980 66,424,508 66,404,248 62,329,023 58,599,666 58,575,582 66,479,321 61,500,913 46,146,882
Effect of dilutive securities                      
Options                 2,168,594 1,630,314 1,071,392
Denominator for diluted earnings per share - adjusted weighted average shares 66,579,072 69,069,659 69,204,717 66,424,508 66,404,248 63,865,796 60,477,084 60,511,128 68,647,915 63,131,227 47,218,274
Basic earnings per share:                      
Income from continuing operations per share of common stock, after preferred dividends and noncontrolling interest                 $ 0.23 $ 1.02 $ 2.91
Income (loss) from discontinued operations per share of common stock $ 0.00 $ 0.00 $ 0.01 $ 0.00 $ (0.04) $ (0.14) $ (0.15) $ (0.26) 0.01 (0.57) 0.25
Income Applicable to Common Stock, per share (0.08) 0.10 0.26 (0.03) (0.16) 0.06 0.52 0.06 0.24 0.45 3.16
Diluted earnings per share:                      
Income from continuing operations per share of common stock, after preferred dividends and noncontrolling interest                 0.23 1.00 2.84
Income (loss) from discontinued operations per share of common stock 0.00 0.00 0.01 0.00 (0.04) (0.14) (0.15) (0.26) 0.01 (0.57) 0.24
Income Applicable to Common Stock, per share $ (0.08) $ 0.09 $ 0.25 $ (0.03) $ (0.16) $ 0.06 $ 0.50 $ 0.06 $ 0.24 $ 0.44 $ 3.09