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Income Taxes: (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Income tax benefit
Current	$ 0	$ (281)
Deferred	172	524
Income tax benefit	172	243
Components of net deferred tax assets
Net deferred tax assets	$ 31,528		$ 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.