Supplemental Schedule of Noncash Financing Activities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Supplemental Cash Flow Elements [Abstract]
Acquisition obligations (upfront purchase and contingent consideration)	$ 6,762	$ 77,594
Common Stock Repurchase not settled, Shares		200,000
Common Stock Repurchase not settled, Value		$ 8,800
Forfeiture of certain shares to satisfy exercise costs and the recipients income tax obligations related to stock options exercised and restricted stock vested, Shares		8,875	6,134
Forfeiture of certain shares to satisfy exercise costs and the recipients income tax obligations related to stock options exercised and restricted stock vested	$ (230)	$ (467)	$ (398)