Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Quarterly Financial Information Disclosure [Abstract]
Revenue	$ 195,837	$ 248,327	$ 318,677	$ 338,097	$ 398,714	$ 358,887	$ 340,568	$ 318,511	$ 1,100,938	$ 1,416,680	$ 1,091,553
Gross profit	19,233	20,477	30,001	32,465	43,738	36,906	27,886	23,421	102,176	131,951	91,936
Intangible asset impairments and restructuring costs	7,451	6,559	38,515	0					52,525	0	17,998
Operating income (loss)	(7,920)	(5,800)	(31,679)	8,774	17,389	12,794	5,527	2,220	(36,625)	37,930	(10,479)
Net income (loss)	$ (5,722)	$ (5,495)	$ (28,008)	$ 6,151	$ 12,812	$ 8,933	$ 3,932	$ 2,305	$ (33,074)	$ 27,982	$ (11,480)
Basic earnings (loss) per common share	$ (0.22)	$ (0.21)	$ (1.04)	$ 0.23	$ 0.48	$ 0.33	$ 0.15	$ 0.09	$ (1.24)	$ 1.04	$ (0.43)
Diluted earnings (loss) per common share	$ (0.22)	$ (0.21)	$ (1.04)	$ 0.22	$ 0.47	$ 0.33	$ 0.14	$ 0.08	$ (1.24)	$ 1.01	$ (0.43)