Commitments and contingencies (Details Textual)
3 Months Ended
Mar. 31, 2016
Number Of Days Required To Notify Supervisory Authorities Prior To Undertaking Asset Growth 60 years
Tier One Risk Based Capital Requirement 8.00%
Percentage Of Loans 15.00%
Debt Instrument Percentage 98.00%
Capital To Risk Weighted Assets Requirement 11.00%
Percentage Of Asset Growth 10.00%
Percentage of assets classified Doubtful required to be eliminated from books per Consent Order in hundredths 50.00%