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Note I - Reconciliation of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Basic earnings per share of common stock:
Net earnings	$ 9,768	$ (29,743)	$ 6,834	$ (35,716)
Less: Net earnings allocable to participating securities	(1,137)		(798)
Net earnings allocable to shares of common stock	8,631		6,036
Less: Dividends declared or accumulated
Weighted-average shares of common stock outstanding (in shares)	14,597,449	12,157,514	14,546,576	7,272,326
Basic earnings per share of common stock (in dollars per share)	$ 0.59	$ (2.45)	$ 0.41	$ (4.91)
Diluted loss per share of common stock:
Net earnings	$ 9,768	$ (29,743)	$ 6,834	$ (35,716)
Less: Fair value adjustment for Deerfield stock warrants	(18,769)		(28,001)
Net loss allocable to shares of common stock, diluted	$ (9,001)		$ (21,167)
Weighted-average shares of common stock outstanding (in shares)	14,597,449	12,157,514	14,546,576	7,272,326
Dilutive effect of Deerfield stock warrants (in shares)	838,000		1,037,000
Weighted-average shares of common stock outstanding, diluted (in shares)	15,435,322	12,157,514	15,583,390	7,272,326
Diluted loss per share of common stock (in dollars per share)	$ (0.58)	$ (2.45)	$ (1.36)	$ (4.91)

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Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock.

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