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Income Taxes (Details 10) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Unrecognized Tax Benefit [Line Items] |  |  |
Balance at beginning of year | $ 1,335 | $ 788 | $ 483
Increase related to prior year tax positions | 0 | 292 | 368
Decrease related to prior year tax positions | (292) | 0 | 0
Increase related to current year tax positions | 0 | 630 | 0
Settlements | 0 | (368) | 0
Lapse of statute of limitations | (2) | (7) | (63)
Effect of exchange rate change | 11 | 0 | 0
Balance at end of year | $ 1,052 | $ 1,335 | $ 788

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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 + Details
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