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Income Taxes: (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Income tax benefit
Current	$ 0	$ (79)	$ 0	$ (235)
Deferred	689	622	3,759	2,498
Income tax benefit	689	543	3,759	2,263
Components of net deferred tax assets
Net deferred tax assets	$ 35,115		$ 35,115		$ 31,356

Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.