Income Taxes - Additional Information (Details) - USD ($)		3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 22, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2018
Income Taxes
Deferred Tax Liabilities, Tax Deferred Income		$ 1,800,000		$ 1,800,000
Taxes Payable		442,000		$ 442,000
Deferred Income Tax Liability Payable period				8 years
Unrecognized Tax Benefits, Interest on Income Taxes Accrued		0		$ 0
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%			21.00%
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount						$ 381,000
Unrecognized Tax Benefits, Period Increase (Decrease)				$ 45,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate		171,000		171,000
Income Tax Expense (Benefit)		$ 431,000	$ 419,000	$ 800,000	$ 667,000