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, 2018	Sep. 30, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Numerator:
Net income	$ 829	$ 911	$ 317	$ 1,740	$ 1,134
Denominator:
Basic weighted-average common shares outstanding (in shares)	13,944		13,956	13,996	13,959
Effect of dilutive securities:
Stock awards and options (in shares)	1,019		197	1,000	158
Diluted weighted-average common shares outstanding (in shares)	14,963		14,153	14,996	14,117
Net income per share, basic (USD per share)	$ 0.06		$ 0.02	$ 0.12	$ 0.08
Net income per share, diluted (USD per share)	$ 0.06		$ 0.02	$ 0.12	$ 0.08