Segment reporting (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenue	$ 261	$ 320	$ 478	$ 405
Cost of revenue	(96)	(167)	(186)	(216)
Gross margin	165	153	292	189
Operating profit/(loss)	(855)	(1,527)	(2,195)	(2,832)
Cash and cash equivalents	1,097	2,425	1,097	2,425	$ 1,455	$ 4,642
Property and equipment	26		26		43
Intangible assets	2,117		2,117		2,417
Goodwill	6,444		6,444		6,444
Additions:
Property and equipment			33		41
Intangible assets			790		790
Goodwill			0		0
Intellectual Property [Member]
Segment Reporting Information [Line Items]
Revenue	12	37	12	80
Cost of revenue	0	0	0	0
Gross margin	12	37	12	80
Operating profit/(loss)	(35)	(128)	(227)	(186)
Cash and cash equivalents	0		0		11
Property and equipment	0		0		0
Intangible assets	1,284		1,284		1,386
Goodwill	0		0		0
Additions:
Property and equipment			0		0
Intangible assets			0		0
Goodwill			0		0
Mgt Gaming [Member]
Segment Reporting Information [Line Items]
Revenue	249	283	466	325
Cost of revenue	(96)	(167)	(186)	(216)
Gross margin	153	116	280	109
Operating profit/(loss)	(330)	(1,088)	(701)	(1,461)
Cash and cash equivalents	704		704		820
Property and equipment	23		23		38
Intangible assets	833		833		1,030
Goodwill	6,444		6,444		6,444
Additions:
Property and equipment			33		41
Intangible assets			790		790
Goodwill			0		0
Unallocated Corporate Other [Member]
Segment Reporting Information [Line Items]
Revenue	0	0	0	0
Cost of revenue	0	0	0	0
Gross margin	0	0	0	0
Operating profit/(loss)	(490)	$ (311)	(1,267)	$ (1,185)
Cash and cash equivalents	393		393		624
Property and equipment	3		3		5
Intangible assets	0		0		1
Goodwill	$ 0		0		0
Additions:
Property and equipment			0		0
Intangible assets			0		0
Goodwill			$ 0		$ 0