Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2020

Fair Value Disclosures [Abstract]

Fair value hierarchy for financial assets and liabilities

The following tables present the Company’s fair value hierarchy for financial assets and liabilities measured as of June 30, 2020 and December 31, 2019 ($ in millions):

	Fair Value Measurements as of
	June 30, 2020
	Level 1		Level 2		Level 3		Total
Assets:
U.S. Government obligations	$	—	$	6.7	$	—	$	6.7
Total	$	—	$	6.7	$	—	$	6.7

	Fair Value Measurements as of
	December 31, 2019
	Level 1		Level 2		Level 3		Total
Assets:
U.S. Government obligations	$	—	$	5.9	$	—	$	5.9
Total	$	—	$	5.9	$	—	$	5.9