Asset purchases and acquisitions of businesses (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
FanTD [Member]
Purchase consideration:
Common Stock consideration	$ 3,018
Cash consideration	202
Aggregate purchase consideration	3,220
Fair Value Of Noncontrolling Interest	1,882
Aggregate fair value of enterprise	5,102
Purchase price allocation:
Net liabilities assumed	(69)
Property and equipment	4
Net liabilities assumed assets	(65)
Aggregate fair value of purchase consideration, non-controlling interest and net liabilities assumed allocated to intangible assets as follows:
Total purchase price allocation	5,102
Avcom, Inc [Member]
Purchase consideration:
Common Stock consideration	1,552
Cash consideration	10
Aggregate fair value of enterprise	1,562
Purchase price allocation:
Net liabilities assumed	(6)
Property and equipment	7
Aggregate fair value of purchase consideration, non-controlling interest and net liabilities assumed allocated to intangible assets as follows:
Intangible assets and Goodwill	1,562
Total purchase price allocation	1,496
Software Development [Member] | FanTD [Member]
Aggregate fair value of purchase consideration, non-controlling interest and net liabilities assumed allocated to intangible assets as follows:
Intangible assets and Goodwill	186
Customer Lists [Member] | FanTD [Member]
Aggregate fair value of purchase consideration, non-controlling interest and net liabilities assumed allocated to intangible assets as follows:
Intangible assets and Goodwill	33
Patents [Member] | Avcom, Inc [Member]
Aggregate fair value of purchase consideration, non-controlling interest and net liabilities assumed allocated to intangible assets as follows:
Intangible assets and Goodwill	15
Goodwill [Member] | FanTD [Member]
Aggregate fair value of purchase consideration, non-controlling interest and net liabilities assumed allocated to intangible assets as follows:
Total purchase price allocation	4,948
Website [Member] | Avcom, Inc [Member]
Aggregate fair value of purchase consideration, non-controlling interest and net liabilities assumed allocated to intangible assets as follows:
Intangible assets and Goodwill	$ 50