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CALCULATION OF WEIGHTED AVERAGE SHARES OUTSTANDING FOR EARNINGS (LOSS) PER SHARE (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Earnings Per Share [Abstract]
Net income	$ 12,134us-gaap_NetIncomeLoss	$ 10,549us-gaap_NetIncomeLoss	$ 54,070us-gaap_NetIncomeLoss
Basic weighted average shares outstanding	19,761	19,346
Plus unvested restricted stock	84	64
Diluted weighted shares outstanding	19,845	19,410
Earnings (loss) per common share
Basic (in dollars per share)	$ 0.61us-gaap_EarningsPerShareBasic	$ 0.55us-gaap_EarningsPerShareBasic
Diluted (in dollars per share)	$ 0.61us-gaap_EarningsPerShareDiluted	$ 0.54us-gaap_EarningsPerShareDiluted

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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- Definition

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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- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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