Fair Value Measurements - Reconciliation of Assets and Liabilities Measured Using Significant Unobservable Inputs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance at Beginning	$ 5,005
Fair value adjustment	(505)	$ (70)
Balance at Ending	4,500
Measured on a recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance at Beginning	5,005
Balance at Ending	4,500
Level 3 | Measured on a recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance at Beginning	5,005
Balance at Ending	$ 4,500