Summary of Significant Accounting Policies - Reconciliation of Net Income per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Numerator:
Net income	$ 3,824	$ 1,661	$ 4,303	$ 1,761	$ 3,907	$ 1,782	$ 829	$ 911	$ 11,549	$ 7,429	$ 5,761
Denominator:
Basic weighted-average common shares outstanding (in shares)									14,105	14,055	13,992
Effect of dilutive securities:
Stock awards and options (in shares)									494	925	144
Diluted weighted-average common shares outstanding (in shares)									14,599	14,980	14,136
Income per share, basic (dollars per share)	$ 0.27	$ 0.12	$ 0.31	$ 0.13	$ 0.27	$ 0.13	$ 0.06	$ 0.07	$ 0.82	$ 0.53	$ 0.41
Income per share, diluted (dollars per share)	$ 0.26	$ 0.11	$ 0.30	$ 0.12	$ 0.26	$ 0.12	$ 0.06	$ 0.06	$ 0.79	$ 0.50	$ 0.41