Accrued Liabilities - Narrative (Details) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
	Mar. 31, 2020 USD ($) board_member tranche day $ / shares	Jun. 30, 2020 USD ($)
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Performance bonus, stock price, threshold consecutive trading days | day	10
Number of board members, performance awards | board_member	2
Accrued bonuses		$ 2.1
Unrecognized bonus compensation expense		$ 3.3
Minimum
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Unrecognized bonus compensation expense, period		2 months 8 days
Maximum
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Unrecognized bonus compensation expense, period		1 year 2 months 4 days
Accrued Liabilities
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Accrued bonuses		$ 1.5
Other Noncurrent Liabilities
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Accrued bonuses		$ 0.6
Employees
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Performance bonuses approved	$ 25.3
Performance bonus, tranche one	8.0
Performance bonus, tranche two	$ 17.3
Stock price threshold to earn bonus, tranche two (in dollars per share) | $ / shares	$ 21.39
Chief Executive Officer
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Performance bonuses approved	$ 8.1
Stock price threshold to earn bonus, tranche two (in dollars per share) | $ / shares	$ 32.99
Performance bonus, stock price, threshold consecutive trading days | day	20
Performance bonus, number of tranches | tranche	2
Performance bonus, percent of amount, tranche one	50.00%
Stock price threshold to earn bonus, tranche one (in dollars per share) | $ / shares	$ 31.61
Performance bonus, percent of amount, tranche two	50.00%
Percent of bonus subject to performance condition	50.00%
Senior Executive
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Performance bonuses approved	$ 0.1
Two Board Of Director Members
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Performance bonuses approved	$ 0.3
Stock price threshold to earn bonus, tranche two (in dollars per share) | $ / shares	$ 32.99
Performance bonus, number of tranches | tranche	2
Stock price threshold to earn bonus, tranche one (in dollars per share) | $ / shares	$ 31.61