Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Components of provision for income taxes
Income tax expense	$ 514	$ 39	$ 1,445	$ 1,110
Current-
Current- Federal		0		(22)
Current- Foreign	79	16	155	86
Current- State	$ 435	$ 23	$ 1,290	$ 1,046

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