Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Consolidated Statements of Comprehensive Income (Loss)
Net income (loss)	$ 8,317	$ (2,739)	$ 4,542	$ (3,545)
Other comprehensive loss:
Unrealized gain (loss), net, on available-for-sale marketable securities, net of tax of $0 for the three and six months ended June 30, 2018 and 2017, respectively	83	(4)	49	(97)
Reclassification adjustment for net gain on sale of equity securities included in net loss				(1,127)
Comprehensive income (loss)	$ 8,400	$ (2,743)	$ 4,591	$ (4,769)

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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