Operating leases, commitments and security deposit (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Aug. 20, 2014
Operating Leases Commitments And Security Deposit [Line Items]
Operating Leases, Rent Expense, Net	$ 23	$ 32	$ 42	$ 62
Operating leases [Member]
Operating Leases Commitments And Security Deposit [Line Items]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	$ 23		$ 23
Harrison office [Member]
Operating Leases Commitments And Security Deposit [Line Items]
Capital Leases, Future Minimum Payments Receivable					$ 71