Income Taxes (Details 8) $ in Thousands, € in Millions	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Apr. 30, 2014 EUR (€)	Apr. 30, 2014 USD ($)
Income Taxes
Deferred Tax Assets, Valuation Allowance	$ 923	$ 3,862	€ 3.2	$ 4,400
Accumulated Undistributed Foreign Earnings	$ 7,100	$ 10,500