Income Taxes (Details 4) $ in Thousands	Dec. 31, 2016 USD ($)
United States federal [Member]
Summary of operating loss carryforward
Operating loss carry forwards	$ 2,045
California State [Member]
Summary of operating loss carryforward
Operating loss carry forwards	172,903
States other than California [Member]
Summary of operating loss carryforward
Operating loss carry forwards	2,009
Foreign Tax Authority [Member]
Summary of operating loss carryforward
Operating loss carry forwards	$ 10,515