SUPPLEMENTAL BALANCE SHEET INFORMATION (Tables)

12 Months Ended

Sep. 30, 2015

SUPPLEMENTAL BALANCE SHEET INFORMATION

Schedule of supplemental balance sheet information, reflecting activity in the entity's reserve for bad debt

	September 30,
	2015			2014			2013
	(in thousands)
Reserve for bad debt:
Balance at October 1,	$	4,597		$	4,795		$	942
Provision for (recovery of) bad debt		6,034			(200	)		3,875
Write-off of bad debt		(4,450	)		2			(22	)
Balance at September 30,	$	6,181		$	4,597		$	4,795

Schedule of supplemental balance sheet information, Prepaid expenses and other current assets, accrued liabilities and long-term liabilities

	September 30,
	2015		2014 (as adjusted)
	(in thousands)
Prepaid expenses and other current assets:
Restricted cash	$	29,998	$	28,244
Prepaid insurance		6,572		13,316
Deferred mobilization		11,899		20,133
Prepaid income taxes		7,320		—
Prepaid value added tax		1,063		434
Other		15,265		18,785
Total prepaid expenses and other current assets	$	72,117	$	80,912
Accrued liabilities:
Accrued operating costs	$	28,022	$	91,408
Payroll and employee benefits		35,938		88,128
Taxes payable, other than income tax		38,992		42,538
Accrued income taxes		—		10,611
Deferred mobilization		18,230		18,103
Self-insurance liabilities		10,796		8,118
Deferred income		42,627		3,144
Other		23,448		20,228
Total accrued liabilities	$	198,053	$	282,278
Noncurrent liabilities—Other:
Pension and other non-qualified retirement plans	$	28,430	$	25,305
Self-insurance liabilities		20,846		13,476
Deferred mobilization		39,469		3,818
Uncertain tax positions including interest and penalties		17,724		13,239
Other		4,635		8,272
Total noncurrent liabilities—other	$	111,104	$	64,110