NET INCOME PER COMMON SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Impact Of Equity Awards [Line Items]
Excluded shares as anti-dilutive when reporting loss	0	0	974	0
Earnings Per Share, Basic and Diluted [Abstract]
Net Income (Loss) Attributable to Parent	$ 4,100	$ 11,420	$ 1,184	$ 26,666	$ 38,065
Preferred stock dividend	663	526	1,763	1,351
Net Income (Loss) Available to Common Stockholders, Basic	$ 3,437	$ 10,894	$ (579)	$ 25,315
Weighted Average Number Of Shares Outstanding Basic	38,954,788	38,484,578	38,947,533	38,457,061
Earnings Per Share Basic	$ 0.09	$ 0.28	$ (0.01)	$ 0.66
Incremental Common Shares Attributable to Share-based Payment Arrangements	773,000	1,014,000	0	917,000
Weighted Average Number Of Diluted Shares Outstanding	39,727,976	41,433,200	38,947,533	39,373,988
Earnings Per Share Diluted	$ 0.09	$ 0.28	$ (0.01)	$ 0.64
Preferred stock under if converted method	0	1,934,000	0	0
Restricted Stock Units Service Conditions [Member]
Impact Of Equity Awards [Line Items]
Excluded shares as anti-dilutive under the treasury stock method	157,000	0	101,000	0
Restricted Stock Units Service And Performance Conditions But Performance Not Met [Member]
Impact Of Equity Awards [Line Items]
Excluded shares as anti-dilutive under the treasury stock method	0	21,000	0	21,000
Perpetual Cumulative Convertible Preferred Stock [Member]
Impact Of Equity Awards [Line Items]
Excluded shares as anti-dilutive under the treasury stock method	2,017,000	0	2,017,000	1,934,000
Options Activity [Member]
Impact Of Equity Awards [Line Items]
Excluded shares as anti-dilutive under the treasury stock method	14,000	0	0	0
Price range of option: from	$ 11.69	$ 0	$ 0	$ 0
Price range of option: to	$ 11.78	$ 0	$ 0	$ 0
Restricted Stock Units Activity [Member] | Restricted Stock Units Service And Market Conditions But Market Not Met [Member]
Impact Of Equity Awards [Line Items]
Excluded shares as anti-dilutive under the treasury stock method	267,000	478,000	267,000	478,000