Accounts Receivable (Schedule of Accounts Receivable) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
Receivables [Abstract]
Accounts receivable - trade	$ 18,500	$ 26,158
Contract receivables	5,362	4,722
Account receivables gross	23,862	30,880
Allowance for doubtful accounts	(820)	(323)
Account receivables net	$ 23,042	$ 30,557