SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND PRACTICES - Revisions to Prior Period Consolidated Financial Statements (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended													12 Months Ended
	Dec. 31, 2018		Sep. 30, 2018	[1]	Jun. 30, 2018	[1]	Mar. 31, 2018	[1]	Dec. 31, 2017		Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Prior Period Adjustments [Line Items]
Deferred income taxes	$ 6,106								$ 18,394					$ 6,106	$ 18,394
Total liabilities	520,721								578,661					520,721	578,661
Retained earnings	81,450								135,486					81,450	135,486
Total equity	457,100								477,174					457,100	477,174	$ 535,637	$ 338,146
Benefit for income taxes														(31,063)	(53,078)	(3,093)
Loss from continuing operations	3,985	[1]	$ (23,526)		$ (31,341)		$ (12,264)		19,667	[1]	$ (83,528)	$ (11,086)	$ (9,508)	(63,146)	(84,455)	(12,565)
Net loss	$ 3,985	[1]	$ (23,526)		$ (31,341)		$ (12,264)		$ 19,667	[1]	$ (83,528)	$ (11,086)	$ (9,508)	$ (63,146)	$ (84,455)	$ (12,676)
Basic earnings (loss) from continuing operations per share (in USD per share)	$ 0.13	[1]	$ (0.78)		$ (1.04)		$ (0.41)		$ 0.66	[1]	$ (2.80)	$ (0.37)	$ (0.32)	$ (2.10)	$ (2.83)	$ (0.45)
Net income (loss) per share: Basic (in USD per share)	0.13	[1]	(0.78)		(1.04)		(0.41)		0.66	[1]	(2.80)	(0.37)	(0.32)	(2.10)	(2.83)	(0.45)
Diluted earnings (loss) from continuing operations per share (in USD per share)	0.13	[1]	(0.78)		(1.04)		(0.41)		0.66	[1]	(2.80)	(0.37)	(0.32)	(2.10)	(2.83)	(0.45)
Net income (loss) per share: Diluted (in USD per share)	$ 0.13	[1]	$ (0.78)		$ (1.04)		$ (0.41)		$ 0.66	[1]	$ (2.80)	$ (0.37)	$ (0.32)	$ (2.10)	$ (2.83)	$ (0.45)
As previously reported
Prior Period Adjustments [Line Items]
Deferred income taxes									$ 38,100						$ 38,100
Total liabilities									598,367						598,367
Retained earnings									115,780						115,780
Total equity									457,468						457,468
Benefit for income taxes															(33,372)
Loss from continuing operations															(104,161)
Net loss															$ (104,161)
Basic earnings (loss) from continuing operations per share (in USD per share)															$ (3.49)
Net income (loss) per share: Basic (in USD per share)															(3.49)
Diluted earnings (loss) from continuing operations per share (in USD per share)															(3.49)
Net income (loss) per share: Diluted (in USD per share)															$ (3.49)
Adjustments
Prior Period Adjustments [Line Items]
Deferred income taxes									(19,706)						$ (19,706)
Total liabilities									(19,706)						(19,706)
Retained earnings									19,706						19,706
Total equity									$ 19,706						19,706
Benefit for income taxes															(19,706)
Loss from continuing operations															19,706
Net loss															$ 19,706
Basic earnings (loss) from continuing operations per share (in USD per share)															$ 0.66
Net income (loss) per share: Basic (in USD per share)															0.66
Diluted earnings (loss) from continuing operations per share (in USD per share)															0.66
Net income (loss) per share: Diluted (in USD per share)															$ 0.66

[1] Income (loss) from continuing operations, net income (loss) and the related earnings (loss) per share amounts for each of the quarters in 2018 and the fourth quarter of 2017 are revised from those originally reported to correct errors in income tax expense (benefit) associated with the measurement of valuation allowances on deferred tax assets. Based on an analysis of quantitative and qualitative factors, the Company determined the related impacts were not material to its previously filed annual or interim consolidated financial statements, and therefore, amendments of previously filed reports are not required.