Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Liabilities, Fair Value Disclosure [Abstract]
Payment for contingent consideration	$ 3,100	$ 900
Undiscounted maximum payment, based on certain milestone	800
Level 1 | Fair Value, Measurements, Recurring
Liabilities, Fair Value Disclosure [Abstract]
Contingent consideration	0	0
Total	0	0
Level 2 | Fair Value, Measurements, Recurring
Liabilities, Fair Value Disclosure [Abstract]
Contingent consideration	0	0
Total	0	0
Level 3 | Fair Value, Measurements, Recurring
Liabilities, Fair Value Disclosure [Abstract]
Contingent consideration	733	5,531
Total	$ 733	$ 5,531