Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Revenue	$ 148,260	$ 248,327	$ 498,499	$ 905,101
Cost of revenue	146,700	227,850	467,276	822,158
Gross profit	1,560	20,477	31,223	82,943
Selling, general and administrative expenses	17,179	19,718	52,031	66,574
Goodwill and other intangible asset impairment	0	0	0	38,515
Restructuring costs	1,860	6,559	6,585	6,559
Operating loss	(17,479)	(5,800)	(27,393)	(28,705)
Other income (expense):
Interest expense	(322)	(398)	(1,055)	(1,231)
Interest income	25	356	96	1,247
Other	(157)	(767)	1,849	(368)
Loss before income tax benefit	(17,933)	(6,609)	(26,503)	(29,057)
Benefit from federal, state and foreign income taxes	(5,060)	(1,114)	(6,002)	(1,705)
Net loss	$ (12,873)	$ (5,495)	$ (20,501)	$ (27,352)
Basic loss per common share	$ (0.49)	$ (0.21)	$ (0.78)	$ (1.02)
Diluted loss per common share	$ (0.49)	$ (0.21)	$ (0.78)	$ (1.02)
Weighted average common shares outstanding:
Basic	26,515	26,478	26,422	26,781
Diluted	26,515	26,478	26,422	26,781