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Goodwill and intangible assets (Details 2) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Intellectual Property [Member]
 
2013 $ 86
2014 344
2015 344
2016 274
2017 242
Thereafter 803
Software And Website Development [Member]
 
2013 23
2014 92
2015 92
2016 34
2017 0
Thereafter 0
Customer Lists [Member]
 
2013 8
2014 32
2015 32
2016 32
2017 32
Thereafter 14
Trademarks [Member]
 
2013 1
2014 3
2015 0
2016 0
2017 0
Thereafter $ 0