Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Consolidated Statements of Comprehensive Income (Loss)
Net income (loss)	$ 917us-gaap_NetIncomeLoss	$ (15,543)us-gaap_NetIncomeLoss
Other comprehensive income:
Unrealized net gain on marketable securities	89	1
Other comprehensive income:	89	1
Comprehensive income (loss)	$ 1,006us-gaap_ComprehensiveIncomeNetOfTax	$ (15,542)us-gaap_ComprehensiveIncomeNetOfTax

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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