Cash and Cash Equivalents and Fair Value of Financial Instruments - Financial Assets and Liabilities Measured At Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds		$ 10,114
Forward contracts		32
Interest rate swap contracts	$ 1,245
Total financial assets	1,245	10,146
Total financial liabilities	2,400	5,823
Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds		10,114
Forward contracts		0
Interest rate swap contracts	0
Total financial assets	0	10,114
Total financial liabilities	0	0
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds		0
Forward contracts		32
Interest rate swap contracts	1,245
Total financial assets	1,245	32
Total financial liabilities	0	0
Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds		0
Forward contracts		0
Interest rate swap contracts	0
Total financial assets	0	0
Total financial liabilities	2,400	5,823
Contingent consideration liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial liabilities	2,400	5,823
Contingent consideration liability | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial liabilities	0	0
Contingent consideration liability | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial liabilities	0	0
Contingent consideration liability | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial liabilities	$ 2,400	$ 5,823