Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating Loss Carryforwards [Line Items]
Income taxes paid	$ 4,909	$ 36,783	$ 5,332
Tax credit	600
Decrease in in unrecognized tax benefits, reasonably possible	500
Penalties and interest liabilities	600	400
Penalties and interest expense	100	$ 200
Expiration Begins, 2035
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	8,200
Expiration Begins, 2017
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	55,600
Expiration Begins, 2031
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 1,700