Fair Value Measurements (Fair Value of Other Financial Instruments) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Carrying Value
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Borrowings under revolving credit facility	$ 38,566	$ 25,148
Fair Value
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Borrowings under revolving credit facility	38,566	25,148
Term loan | Carrying Value
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Term loan	9,833	25,398
Term loan | Fair Value
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Term loan	$ 9,833	$ 25,398