Stock-based Compensation (Details) - The 2012 Stock Incentive Plan - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020	Sep. 05, 2012
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Shares of common stock authorized by 2012 plan (in shares)					500,000
Shares available for grant under 2012 plan (in shares)	10,477		10,477
Weighted average contractual term for stock options outstanding (in years)			1 year 9 months 18 days
Compensation expense for all stock-based plans	$ 0.1	$ 0.1	$ 0.6	$ 0.3
Unrecognized stock-based compensation costs	$ 0.7		$ 0.7
Expected weighted average vesting period (in years)			1 year 9 months 18 days
Share-based Payment Arrangement, Option
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Expiration date of options granted (in years)			10 years
Shares outstanding (in shares)	8,250		8,250
Stock options granted (in shares)			0	0
Aggregate intrinsic value of shares outstanding (less than)	$ 0.1		$ 0.1
Stock options exercisable (in shares)	8,250		8,250
Forfeiture of options (in shares)			0
Restricted Stock Units (RSUs)
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Shares outstanding (in shares)	260,977		260,977
Aggregate intrinsic value of shares outstanding (less than)	$ 1.7		$ 1.7
Restricted stock awards (in shares)			297,140
Fair value of restricted stock award grants (in dollars per share)			$ 3.36
Restricted stock awards vested (in shares)			102,670
Restricted stock awards forfeited (in shares)			3,834
Unrecognized stock-based compensation costs	2.4		$ 2.4
Portion Relating to RSU Grants Not Expected to be Awarded
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Unrecognized stock-based compensation costs	$ 1.7		$ 1.7
Minimum | Share-based Payment Arrangement, Option
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Vesting period of shares granted (in years)			1 year
Minimum | Restricted Stock Units (RSUs)
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Vesting period of shares granted (in years)			1 year
Maximum | Share-based Payment Arrangement, Option
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Vesting period of shares granted (in years)			3 years
Maximum | Restricted Stock Units (RSUs)
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Vesting period of shares granted (in years)			3 years