EMPLOYEE BENEFIT PLANS (Tables)

6 Months Ended

12 Months Ended

Mar. 31, 2015

Sep. 30, 2014

EMPLOYEE BENEFIT PLANS

Schedule of reconciliation of the changes in the pension benefit obligations, fair value of Pension Plan assets and statement of the funded status

	2014			2013
	(in thousands)
Accumulated Benefit Obligation	$	111,108		$	102,680
Changes in projected benefit obligations
Projected benefit obligation at beginning of year	$	102,680		$	112,062
Interest cost		4,763			4,339
Actuarial (gain) loss		10,787			(9,320	)
Benefits paid		(7,122	)		(4,401	)
Projected benefit obligation at end of year	$	111,108		$	102,680
Change in plan assets
Fair value of plan assets at beginning of year	$	96,818		$	86,718
Actual return on plan assets		11,132			12,369
Employer contribution		7,329			2,132
Benefits paid		(7,122	)		(4,401	)
Fair value of plan assets at end of year	$	108,157		$	96,818
Funded status of the plan at end of year	$	(2,951	)	$	(5,862	)

Schedule of amounts recognized in the Consolidated Balance Sheets

        The amounts recognized in the Consolidated Balance Sheets are as follows (in thousands):

Accrued liabilities	$	(62	)	$	(145	)
Noncurrent liabilities—other		(2,889	)		(5,717	)
Net amount recognized	$	(2,951	)	$	(5,862	)

Schedule of amounts recognized in Accumulated Other Comprehensive Income and not yet reflected in net periodic benefit cost

        The amounts recognized in Accumulated Other Comprehensive Income at September 30, 2014 and 2013, and not yet reflected in net periodic benefit cost, are as follows (in thousands):

Net actuarial loss $ (23,405 ) $ (19,210 )

Schedule of weighted average assumptions used for the pension calculations

	Years Ended September 30,
	2014			2013			2012
Discount rate for net periodic benefit costs		4.80	%		4.06	%		4.33	%
Discount rate for year-end obligations		4.32	%		4.80	%		4.06	%
Expected return on plan assets		6.61	%		7.06	%		7.16	%

Schedule of components of net periodic pension expense (benefit)

	Three Months Ended						Six Months Ended
	March 31,						March 31,
	2015			2014			2015			2014
	(in thousands)						(in thousands)
Interest cost	$	1,171		$	1,201		$	2,342		$	2,402
Expected return on plan assets	(1,743		)	(1,664		)	(3,486		)	(3,328		)
Recognized net actuarial loss	309			229			618			458
Net pension expense	$	(263	)	$	(234	)	$	(526	)	$	(468	)

	Years Ended September 30,
	2014			2013			2012
	(in thousands)
Interest cost	$	4,763		$	4,339		$	4,498
Expected return on plan assets		(6,789	)		(6,099	)		(5,463	)
Amortization of prior service cost		—			1			2
Recognized net actuarial loss		873			2,372			3,567
Settlement		1,376			—			—
Net pension expense (benefit)	$	223		$	613		$	2,604

Schedule of expected benefits to be paid from pension plan

        The following table reflects the expected benefits to be paid from the Pension Plan in each of the next five fiscal years, and in the aggregate for the five years thereafter (in thousands).

Years Ended September 30,
2015	2016	2017	2018	2019	2020 - 2024	Total
$5,510	$6,416	$5,642	$6,999	$7,559	$36,032	$68,158

Schedule of target allocation and the asset allocation for the Pension Plan

	Target Allocation			Percentage of Plan Assets At September 30,
Asset Category	2015			2014			2013
U.S. equities		55	%		61	%		58	%
International equities		15			12			13
Fixed income		27			25			27
Real estate and other		3			2			2
Total		100	%		100	%		100	%

Schedule of fair value of plan assets, summarized by level within fair value hierarchy

	Fair Value as of September 30, 2014
	Total		Level 1		Level 2		Level 3
	(in thousands)
Short-term investments	$	2,250	$	2,250	$	—	$	—
Mutual funds:
Domestic stock funds		55,054		55,054		—		—
Bond funds		24,722		24,722		—		—
International stock funds		8,731		8,731		—		—
Total mutual funds		88,507		88,507		—		—
Domestic common stock		15,733		15,733		—		—
Foreign equity stock		1,366		1,366		—		—
Oil and gas properties		301		—		—		301
Total	$	108,157	$	107,856	$	—	$	301

	Fair Value as of September 30, 2013
	Total		Level 1		Level 2		Level 3
	(in thousands)
Short-term investments	$	1,983	$	1,983	$	—	$	—
Mutual funds:
Domestic stock funds		44,129		44,129		—		—
Bond funds		23,749		23,749		—		—
International stock funds		12,519		12,519		—		—
Total mutual funds		80,397		80,397		—		—
Domestic common stock		12,998		12,998		—		—
Foreign equity stock		1,153		1,153		—		—
Oil and gas properties		287		—		—		287
Total	$	96,818	$	96,531	$	—	$	287

Summary of changes in fair value of plan's Level 3 assets

	Oil and Gas Properties
	Years Ended September 30,
	2014		2013
	(in thousands)
Balance, beginning of year	$	287	$	299
Unrealized gains (losses) relating to property still held at the reporting date		14		(12	)
Balance, end of year	$	301	$	287