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						9 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Mar. 31, 2021	Mar. 31, 2020
Numerator:
Net income	$ 1,724	$ 3,812	$ 2,451	$ 1,661	$ 4,303	$ 1,761	$ 7,987	$ 7,725
Denominator:
Basic weighted-average common shares outstanding (in shares)	14,071			14,252			14,175	14,054
Effect of dilutive securities:
Stock awards and options (in shares)	141			437			245	538
Diluted weighted-average common shares outstanding (in shares)	14,212			14,689			14,420	14,592
Net income per share, basic (USD per share)	$ 0.12			$ 0.12			$ 0.56	$ 0.55
Net income per share, diluted (USD per share)	$ 0.12			$ 0.11			$ 0.55	$ 0.53