Consolidated Statements of Operations and Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operations
Revenues	$ 0	$ 0
Operating Expenses
General and administrative expenses	16,001	2,155
Land option and lease expenses	250	236
Depreciation expense	29	26
Total operating expenses	16,280	2,417
Total operating loss	(16,280)	(2,417)
Other income (expense)
Interest income, net	122	37
Other expense	(42)	(8)
Total other income	80	29
Net loss	$ (16,200)	$ (2,388)
Net loss per common share - basic and diluted	$ (0.15)	$ (0.02)
Weighted average shares outstanding - basic and diluted	106,388	95,689
Comprehensive Loss
Net loss	$ (16,200)	$ (2,388)
Other comprehensive loss:
Change in fair value of investments		5
Comprehensive loss	$ (16,200)	$ (2,383)