Condensed Consolidated Statement of Shareholders' Investment (Deficit) (Unaudited) - USD ($)	Total	Common Stock	Additional Paid-In Capital	Retained Deficit
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of change in accounting principle	$ 886,000			$ 886,000
Beginning balance, shares at Dec. 31, 2017		1,536,925
Beginning balance, shares at Dec. 31, 2017	110,847,000	$ 15,000	$ 403,535,000	(292,703,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of restricted stock units, net of taxes paid, shares		3,272
Issuance of restricted stock units, net of taxes paid	(75,000)		(75,000)
Share-based compensation	523,000		523,000
Net Income (Loss) Attributable to Parent	(23,643,000)			(23,643,000)
Ending balance, shares at Mar. 31, 2018	$ 88,538,000	$ 15,000	403,983,000	(315,460,000)
Ending balance, shares at Mar. 31, 2018		1,540,197
Beginning balance, shares at Dec. 31, 2018	1,556,000	1,555,868
Beginning balance, shares at Dec. 31, 2018	$ (52,155,000)	$ 16,000	405,243,000	(457,414,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of restricted stock units, net of taxes paid, shares		5,664
Issuance of restricted stock units, net of taxes paid	(8,000)		(8,000)
Issuance of common stock, shares		36,000,000
Issuance of common stock	450,000,000	$ 360,000	449,640,000	0
Common stock issuance costs	(11,985,000)
Share-based compensation	1,599,000		1,599,000
Net Income (Loss) Attributable to Parent	(26,999,000)			(26,999,000)
Ending balance, shares at Mar. 31, 2019	$ 360,452,000	$ 376,000	$ 844,489,000	$ (484,413,000)
Ending balance, shares at Mar. 31, 2019	37,562,000	37,561,532