Stockholders' Equity - Stock Options - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended
		Sep. 30, 2022	Sep. 30, 2021
Stockholders Equity Note [Line Items]
Stock-based compensation expense	[1]	$ 941	$ 768
Employee Stock Option
Stockholders Equity Note [Line Items]
Stock-based compensation expense		800	$ 600
Restricted Stock Awards and Stock Options
Stockholders Equity Note [Line Items]
Total unrecognized compensation cost		2,400
GECC Common Shares
Stockholders Equity Note [Line Items]
Stock issued during period, value		400
Stock issued during period value vested immediately		$ 100
Number of years issued shares vest annually on pro-rata basis		3 years
GECC Common Shares | Employees
Stockholders Equity Note [Line Items]
Stock-based compensation expense		$ 100

[1] Non-cash compensation includes stock-based compensation and compensation in the form of stock in portfolio companies held by the Company. Non-cash compensation attributable to the investment management segment is included in investment management expenses in the condensed consolidated statements of operations. Non-cash compensation attributable to the general corporate segment is included in selling, general and administrative expense in the condensed consolidated statements of operations.