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Fair Value Measurements (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Aug. 31, 2019	Jun. 30, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	$ 24,000		$ 24,000
Osprey Biotechnics, Inc. ("Osprey")
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Contingent consideration on acquisitions	(7,603)	$ (7,553)
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	24,000		24,000
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivatives asset (liability)	20		383
Interest rate swap (liability)	(1,698)		$ (977)
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Contingent consideration on acquisitions	$ (7,603)