Annual report pursuant to Section 13 and 15(d)

Income taxes (Narrative) (Details)

v3.7.0.1
Income taxes (Narrative) (Details)
12 Months Ended
Dec. 31, 2016
USD ($)
Parent Company [Member]  
Operating Loss Carryforwards [Line Items]  
Net operating loss carry forwards $ 99,000,000
Net operating loss carry forwards, expiration date Dec. 31, 2035
Subsidiary [Member]  
Operating Loss Carryforwards [Line Items]  
Net operating loss carry forwards $ 980,000
Net operating loss carry forwards, expiration date Dec. 31, 2035