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, 2020	Dec. 31, 2019	Sep. 30, 2019	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Numerator:
Net income	$ 1,661	$ 4,303	$ 1,761	$ 1,782	$ 7,725	$ 3,522
Denominator:
Basic weighted-average common shares outstanding (in shares)	14,252			14,165	14,054	14,027
Effect of dilutive securities:
Stock awards and options (in shares)	437			1,121	538	951
Diluted weighted-average common shares outstanding (in shares)	14,689			15,286	14,592	14,978
Net income per share, basic (USD per share)	$ 0.12			$ 0.13	$ 0.55	$ 0.25
Net income per share, diluted (USD per share)	$ 0.11			$ 0.12	$ 0.53	$ 0.24