Fair Value Measurements - Fair Value of Other Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Carrying Value [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Borrowings under revolving credit facility	$ 43,085	$ 25,148
Carrying Value [Member] | Term loan [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Term loan	21,827	25,398
Fair Value [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Borrowings under revolving credit facility	43,085	25,148
Fair Value [Member] | Term loan [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Term loan	$ 21,827	$ 25,398