Summary of Significant Accounting Policies - Summary of Computation of Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2021	Dec. 31, 2020
Numerator:
Net income	$ 79	$ 3,316	$ 3,812	$ 2,451	$ 3,395	$ 6,263
Denominator:
Basic weighted-average common shares outstanding (in shares)	13,195		14,193		13,294	14,225
Effect of dilutive securities:
Stock awards and options (in shares)	90		246		65	322
Diluted weighted-average common shares outstanding (in shares)	13,285		14,439		13,359	14,547
Net income per share, basic (in USD per share)	$ 0.01		$ 0.27		$ 0.26	$ 0.44
Net income per share, diluted (in USD per share)	$ 0.01		$ 0.26		$ 0.25	$ 0.43