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Summary of Significant Accounting Policies (Details Textuals) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Dec. 31, 2015
Deferred Tax Assets, Net of Valuation Allowance, Current | $ 71,629 |  | $ 71,629 |  | $ 67,483
Deferred Tax Liabilities, Net, Current | 22,920 |  | 22,920 |  | $ 22,435
Summary of Significant Accounting Policies (Textuals) [Abstract] |  |  |  |  |
Amortization expense | 2,200 | $ 1,500 | 5,800 | $ 4,700 |
Future Amortization Expense Current Year |  |  | 8,200 |  |
Aggregate amortization expense for 2016 | 9,800 |  | 9,800 |  |
Aggregate amortization expense for 2017 | 9,400 |  | 9,400 |  |
Aggregate amortization expense for 2018 | 9,000 |  | 9,000 |  |
Aggregate amortization expense for 2019 | 8,700 |  | 8,700 |  |
Aggregate amortization expense for 2020 | 8,100 |  | 8,100 |  |
Purchased Intangible Amortization, Gross | 2,000 | 1,300 | 5,200 | 4,200 |
Purchased intangible amortization, net of tax | 1,300 | 900 | 3,500 | 2,900 |
Amortization expense associated with capitalized software | 6,800 | 6,200 | $ 20,200 | 18,100 |
Standard Warranty Period |  |  | one |  |
Share - based compensation expense | $ 3,600 | $ 3,400 | $ 10,900 | $ 10,300 |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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