Income Taxes - Reconciliation of Income Tax Rate (Details) - USD ($) $ in Thousands		12 Months Ended
	Dec. 22, 2017	Jun. 30, 2020	Jun. 30, 2019
Income Taxes
Tax at Federal statutory rate		$ 2,269	$ 2,822
Increases (decreases) in taxes resulting from:
Meals and entertainment		44	49
State income taxes, net of Federal income tax benefit		112	103
Foreign source income not subject to tax		(1,213)	(1,219)
R&D Credit		(523)	(408)
Transition tax		0	0
Foreign withholding tax		0	0
Release of accrued tax reserves		0	(151)
U.S. Federal Tax rate reduction		775	0
IRS examination settlements		832	12
Other, net		(12)	14
Effective tax rate		$ 2,284	$ 1,222
Tax at Federal statutory rate	35.00%	21.00%	21.00%
Increases (decreases) in taxes resulting from:
Meals and entertainment		0.40%	0.30%
State income taxes, net of Federal income tax benefit		1.00%	0.80%
Foreign source income not subject to tax		(11.20%)	(9.10%)
R&D Credit		(4.80%)	(3.00%)
Transition tax		0.00%	0.00%
Foreign withholding tax		0.00%	0.00%
U.S. Federal Tax rate reduction		7.10%	0.00%
Release of accrued tax reserves		0.00%	(1.10%)
IRS examination settlements		7.70%	0.10%
Other, net		(0.10%)	0.10%
Effective tax rate		21.10%	9.10%