Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Mar. 31, 2016
Current assets:
Cash and cash equivalents	$ 52,938	$ 65,004
Accounts receivable, net	89,085	93,168
Inventories, net	167,916	168,879
Prepaid expenses and other	30,925	25,496
Total current assets	340,864	352,547
Noncurrent Assets:
Property, plant and equipment, net of accumulated depreciation of $816,331 and $815,338 as of June 30, 2016 and March 31, 2016, respectively	231,688	241,839
Goodwill	40,294	40,294
Intangible assets, net	32,613	33,301
Equity Method Investments	15,172	20,334
Deferred income taxes	7,605	8,397
Other assets	2,744	3,068
Total assets	670,980	699,780
Current liabilities:
Current portion of long-term debt	0	2,000
Accounts payable	66,825	70,981
Accrued expenses	41,898	50,320
Taxes Payable, Current	216	453
Total current liabilities	108,939	123,754
Liabilities, Noncurrent [Abstract]
Long-term debt, less current portion	385,968	385,833
Other non-current obligations	84,694	74,892
Deferred income taxes	2,984	2,820
Stockholders’ equity:
Preferred stock, par value $0.01, authorized 10,000 shares, none issued	0	0
Common stock, par value $0.01, authorized 175,000 shares, issued 46,508 shares at June 30, 2016 and March 31, 2016	465	465
Additional paid-in capital	444,772	452,821
Retained deficit	(311,845)	(299,510)
Accumulated other comprehensive income	(43,939)	(31,425)
Treasury stock, at cost (271 and 611 shares at June 30, 2016 and March 31, 2016, respectively)	(1,058)	(9,870)
Total stockholders’ equity	88,395	112,481
Total liabilities and stockholders’ equity	$ 670,980	$ 699,780