Condensed Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total	Euroscan Holding B.V. [Member]	Series A Convertible Preferred Stock [Member]	Common Stock [Member]	Common Stock [Member] Euroscan Holding B.V. [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] Euroscan Holding B.V. [Member]	Accumulated Other Comprehensive Income [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]	Noncontrolling Interests [Member]
Beginning balances at Dec. 31, 2013	$ 192,948		$ 1,019	$ 48		$ 255,358		$ 235	$ (63,416)	$ (96)	$ (200)
Beginning balances, shares at Dec. 31, 2013			102,054	48,216,480						29,990
Vesting of restricted stock units	0		$ 0	$ 0		0		0	0	$ 0	0
Vesting of restricted stock units, shares				289,138
Stock-based compensation	1,708					1,708
Proceeds received from issuance of common stock in connection with public offering, net of underwriters' discounts and commissions and offering costs of $2,228	36,607			$ 6		36,601
Proceeds received from issuance of common stock in connection with public offering, net of underwriters' discounts and commissions and offering costs, shares				6,325,000
Common stock issued as form of payment for MPUs	213					213
Common stock issued as form of payment for MPUs, shares				33,594
Conversion of Series A convertible preferred stock to common stock			$ (98)			98
Conversion of Series A convertible preferred stock to common stock, shares			(9,836)	16,387
Issuance of common stock in connection with the acquisition	2,243	$ 2,243			$ 1		$ 2,242
Issuance of common stock in connection with the acquisition, shares					291,230
Series A convertible preferred stock dividend			$ 19						(19)
Series A convertible preferred stock dividend, shares			1,940
Exercise of SARs, shares				80,354
Exercise of stock options	62					62
Exercise of stock options, shares				20,792
Net income (loss)	1,040								972		68
Foreign currency translation adjustments	(58)							(65)			7
Ending balances at Jun. 30, 2014	234,763		$ 940	$ 55		296,282		170	(62,463)	$ (96)	(125)
Ending balances, shares at Jun. 30, 2014			94,158	55,272,975						29,990
Beginning balances at Dec. 31, 2014	308,509		$ 909	$ 70		376,297		(583)	(68,137)	$ (96)	49
Beginning balances, shares at Dec. 31, 2014			90,973	70,109,488						29,990
Vesting of restricted stock units	0		$ 0	$ 0		0		0	0	$ 0	0
Vesting of restricted stock units, shares				227,382
Stock-based compensation	2,073					2,073
Common stock issued as form of payment for MPUs	358					358
Common stock issued as form of payment for MPUs, shares				54,801
Series A convertible preferred stock dividend			$ 18						(18)
Series A convertible preferred stock dividend, shares			1,813
Exercise of SARs, shares				44,502
Exercise of stock options	244					244
Exercise of stock options, shares				50,000
Net income (loss)	(14,960)								(15,081)		121
Foreign currency translation adjustments	(544)							(598)			54
Ending balances at Jun. 30, 2015	$ 295,680		$ 927	$ 70		$ 378,972		$ (1,181)	$ (83,236)	$ (96)	$ 224
Ending balances, shares at Jun. 30, 2015			92,786	70,486,173						29,990