Investments and Fair Value Measurements (Details 3) - USD ($) $ in Thousands		Sep. 30, 2015	Dec. 31, 2014
Cash Equivalents and Investments [Abstract]
Money market fund			$ 23
Certificates of deposit	[1]	$ 10,462	6,454
Recurring [Member]
Cash Equivalents and Investments [Abstract]
Money market fund			23
Certificates of deposit		10,050	10,183
Corporate bonds		8,787	9,186
Corporate equity securities		427	754
Total		19,264	20,146
Liabilities [Abstract]
Foreign currency hedge obligations		25
Recurring [Member] | Quoted Prices in Active Markets of Identical Assets (Level 1) [Member]
Cash Equivalents and Investments [Abstract]
Money market fund			23
Corporate equity securities		427	754
Total		427	777
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Cash Equivalents and Investments [Abstract]
Certificates of deposit		10,050	10,183
Corporate bonds		8,787	9,186
Total		18,837	$ 19,369
Recurring [Member] | Significant Other Observable Inputs (Level 3) [Member]
Liabilities [Abstract]
Foreign currency hedge obligations		$ 25

[1] Certificate of deposit with original maturities of less than 90 days.