Summary of Significant Accounting Policies and New Accounting Standards (Details 2) - USD ($) $ in Thousands	Dec. 31, 2018	Jun. 30, 2018
ASSETS
Other current assets	$ 23,605	$ 22,381
Other assets	45,634	46,784
Other liabilities	44,540	43,702
Retained earnings	154,984	$ 131,560
Effect of adoption
ASSETS
Other current assets	100
Other assets	125
Other liabilities	(108)
Retained earnings	$ 333