Asset purchases and acquisitions of businesses (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	Apr. 07, 2014	Dec. 22, 2015
Asset Purchases and Acquisitions of Businesses (Textual )
Common stock price per share		$ 0.25
DraftDay [Member]
Asset Purchases and Acquisitions of Businesses (Textual )
Cash consideration	$ 600
Stock consideration	$ 190
Issuance of common stock	95,166
Common stock price per share	$ 2.00

Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472

Name:	us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant