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Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Components of provision for income taxes
Income tax expense	$ 356	$ 375
Current foreign tax expense	115	32
Current federal tax expense	11	0
Current state tax expense	$ 230	$ 290

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Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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