Fair Value Measurement (Details 2) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Asset (Liability) Carrying Amount
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt and lines of credit	$ (263,127)	$ (279,711)
Fair Value
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt and lines of credit	$ (262,664)	$ (275,123)