Inventory (Tables)

9 Months Ended

Dec. 31, 2012

Inventory [Abstract]

Schedule of Inventory

Inventory is comprised of the following:

	December 31, 2012			March 31, 2012
Non-core inventory
Raw materials	$	34,772,000		$	31,560,000
Work-in-process		577,000			153,000
Finished goods		57,932,000			72,171,000
		93,281,000			103,884,000
Less allowance for excess and obsolete inventory		(7,459,000	)		(8,813,000	)
Total	$	85,822,000		$	95,071,000
Inventory unreturned	$	14,127,000		$	9,819,000
Long-term core inventory
Used cores held at the Company's facilities	$	41,753,000		$	47,206,000
Used cores expected to be returned by customers		5,816,000			5,542,000
Remanufactured cores held in finished goods		25,396,000			25,751,000
Remanufactured cores held at customers' locations		91,107,000			118,402,000
		164,072,000			196,901,000
Less allowance for excess and obsolete inventory		(3,210,000	)		(2,495,000	)
Total	$	160,862,000		$	194,406,000
Long-term core inventory deposits	$	27,610,000		$	26,939,000