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, 2020	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2020	Dec. 31, 2019
Numerator:
Net income	$ 3,812	$ 2,451	$ 4,303	$ 1,761	$ 6,263	$ 6,064
Denominator:
Basic weighted-average common shares outstanding (in shares)	14,193		13,902		14,225	13,908
Effect of dilutive securities:
Stock awards and options (in shares)	246		660		322	607
Diluted weighted-average common shares outstanding (in shares)	14,439		14,562		14,547	14,515
Net income per share, basic (USD per share)	$ 0.27		$ 0.31		$ 0.44	$ 0.44
Net income per share, diluted (USD per share)	$ 0.26		$ 0.30		$ 0.43	$ 0.42