(LOSS) EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Numerator [Abstract]
Net (loss) earnings	$ (100,696)	$ 5,320
Undistributed (loss) earnings	(101,509)	4,511
Undistributed (loss) earnings allocation - basic and diluted [Abstract]
Undistributed (loss) earnings	(101,509)	4,511
Net (loss) earnings allocation - basic and diluted [Abstract]
Net (loss) earnings	(100,696)	5,320
Class A [Member]
Numerator [Abstract]
Net (loss) earnings	(17,729)	927
Less Dividends declared:	131	131
Undistributed (loss) earnings allocation - basic and diluted [Abstract]
Undistributed (loss) earnings	(17,860)	796
Net (loss) earnings allocation - basic and diluted [Abstract]
Net (loss) earnings	$ (17,729)	$ 927
Weighted-average shares outstanding [Abstract]
Common share - basic and diluted (in shares)	2,175	2,175
Net (loss) earnings per share [Abstract]
Common share - basic and diluted (in dollars per share)	$ (8.15)	$ 0.43
Class B [Member]
Numerator [Abstract]
Net (loss) earnings	$ (82,967)	$ 4,393
Less Dividends declared:	682	678
Undistributed (loss) earnings allocation - basic and diluted [Abstract]
Undistributed (loss) earnings	(83,649)	3,715
Net (loss) earnings allocation - basic and diluted [Abstract]
Net (loss) earnings	$ (82,967)	$ 4,393
Weighted-average shares outstanding [Abstract]
Common share - basic and diluted (in shares)	9,701	9,670
Net (loss) earnings per share [Abstract]
Common share - basic and diluted (in dollars per share)	$ (8.55)	$ 0.45

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or 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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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The earnings that is allocated to common stock and participating securities to the extent that each security may share in earnings as if all of the earnings for the period had been distributed.

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The earnings that is allocated to common stock and participating securities to the extent that each security may share in earnings as if all of the earnings for the period had been distributed. Includes the adjustments resulting from the assumption that dilutive securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions.

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Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).

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