Consolidated Statement of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Comprehensive income (loss):
Net loss	$ (2,704)	$ (2,628)
Other comprehensive income:
Change in fair value of available for sale marketable securities, net of tax	372	239
Total comprehensive loss	(2,332)	(2,389)
Less: Comprehensive income attributable to noncontrolling interests	418	0
Comprehensive loss attributable to common stockholders	$ (2,750)	$ (2,389)