Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Paid-In Capital [Member]	Accumulated Other Comprehensive Income [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2013	$ 2	$ 216,721		$ (191,470)	$ (9)	$ 25,244
Balance shares at Dec. 31, 2013	1,651,688
Net loss				$ (10,684)		(10,684)
Common stock issued, net of issuance costs		$ 11,892				11,892
Common stock issued, net of issuance costs, shares	394,116
Common stock issued for loan interest and fees		840				840
Common stock issued for loan interest and fees, shares	27,151
Common stock issued for land obligations		342				342
Common stock issued for land obligations, shares	10,613
Common stock issued for settlement of litigation		334				334
Common stock issued for settlement of litigation, shares	9,935
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes		1,031				1,031
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes, shares	13,507
Conversion feature		2,497				2,497
Minimum withholding taxes on net share settlements of equity awards		$ (110)				(110)
Purchase of treasury stock					$ (249)	(249)
Purchase of treasury stock, shares	(7,635)
Balance at Dec. 31, 2014	$ 2	$ 233,547		$ (202,154)	$ (258)	31,137
Balance shares at Dec. 31, 2014	2,099,375
Net loss				$ (15,143)		(15,143)
Common stock issued, net of issuance costs	$ 1	$ 6,391				6,392
Common stock issued, net of issuance costs, shares	559,428
Common stock issued for acquisition of Anatolia Energy	$ 2	14,561				14,563
Common stock issued for acquisition of Anatolia Energy, shares	1,709,724
Common stock issued for acquisition related fees		743				743
Common stock issued for acquisition related fees, shares	79,841
Options issued for business combinations		1,308				1,308
Options issued for business combinations, shares
Common stock issued for loan interest and fees		722				722
Common stock issued for loan interest and fees, shares	52,861
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes		950				950
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes, shares	20,957
Minimum withholding taxes on net share settlements of equity awards		$ (126)				(126)
Unrealized holding loss on available-for-sale securities			$ (67)			(67)
Balance at Dec. 31, 2015	$ 5	$ 258,096	$ (67)	$ (217,297)	$ (258)	$ 40,479
Balance shares at Dec. 31, 2015	4,522,186