Property and Equipment (Tables)

12 Months Ended

Sep. 30, 2018

Property Plant And Equipment [Abstract]

Schedule of Property and Equipment, Net

Property and equipment, net consists of thefollowing:

	Useful Life		September 30, 2018		September 30, 2017
Land		—	$	51,490	$	37,225
Buildings and leasehold improvements	2-40 yrs.			36,275		27,652
Operating equipment	2-7 yrs.			186,499		182,720
Transportation vehicles	3-7 yrs.			208,371		174,434
Office equipment and software	3-10 yrs.			57,976		47,042
Construction in progress		—		4,202		4,639
Property and equipment				544,813		473,712
Less: Accumulated depreciation				288,007		228,178
Property and equipment, net			$	256,806	$	245,534