Segment Information (Details 1) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Summary of revenues and long lived assets according to geographic areas
Revenues	$ 293,087	$ 245,645	$ 282,911	$ 269,910	$ 291,836	$ 251,237	$ 312,655	$ 341,781	$ 1,091,553	$ 1,197,509	$ 1,311,917
Long-Lived Assets	200,987				227,400				200,987	227,400	189,521
UNITED STATES
Summary of revenues and long lived assets according to geographic areas
Revenues									981,292	961,049	1,127,893
Long-Lived Assets	174,241				193,164				174,241	193,164	158,970
CANADA
Summary of revenues and long lived assets according to geographic areas
Revenues									104,208	228,625	178,603
Long-Lived Assets	13,738				21,419				13,738	21,419	19,915
Other international [Member]
Summary of revenues and long lived assets according to geographic areas
Revenues									6,053	7,835	5,421
Long-Lived Assets	$ 13,008				$ 12,817				$ 13,008	$ 12,817	$ 10,636