Condensed Consolidated Statement of Changes in Stockholders' Equity (Unaudited) - 6 months ended Jun. 30, 2018 - USD ($) $ in Thousands		Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2017		28,406,856
Balance at Dec. 31, 2017		$ 28	$ 169,527	$ (108,559)	$ (3,510)	$ 57,486
Cumulative effect of accounting change at Dec. 31, 2017	[1]			1,891		1,891
Balance, adjusted at Dec. 31, 2017		$ 28	169,527	(106,668)	(3,510)	59,377
Common stock issued for compensation, services, and royalty payments (in shares)		98,198
Common stock issued for compensation, services, and royalty payments			281			281
Net loss for the period ended June 30, 2018				(8,027)		(8,027)
Other comprehensive loss					(382)	(382)
Balance (in shares) at Jun. 30, 2018		28,505,054
Balance at Jun. 30, 2018		$ 28	$ 169,808	$ (114,695)	$ (3,892)	$ 51,249

[1] Represents adjustment to accumulated deficit upon the adoption of Accounting Standards Codification Topic 606.