Long-Term Debt - Summary (Details) - USD ($)	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Oct. 14, 2016
Debt Instrument [Line Items]
Long-term debt, outstanding	$ 1,347,584,000	$ 1,428,868,000
Amount outstanding of credit facility	360,445,000
Short-term	427,277,000	475,863,000
Long-term debt, current	164,000	10,046,000
Long-term debt	920,143,000	942,959,000
Long-term debt, total	920,307,000	953,005,000
Remaining borrowing capacity of credit facility	367,908,000
Long-term Debt, by Maturity [Abstract]
2019	164,000
2020	334,000
2021	70,000
2022	919,508,000
2023	70,000
Later	160,000
Subordinated Debt | Senior Secured $275 Million 8.50% Note
Debt Instrument [Line Items]
Long-term debt, outstanding	268,943,000	267,049,000
Amount outstanding of credit facility	$ 0
Interest rate of debt instrument (as a percent)	8.50%
Long-term Debt, by Maturity [Abstract]
2019	$ 0
2020	0
2021	0
2022	268,943,000
2023	0
Later	0
Unamortized debt issuance expense	4,251,000
Unamortized discount of debt instrument	1,806,000
Total repayments of debt	275,000,000
Subordinated Debt | 9.875% Senior Secured Second Lien Notes due 2021
Debt Instrument [Line Items]
Long-term debt, outstanding	650,495,000	675,076,000
Amount outstanding of credit facility	$ 0
Interest rate of debt instrument (as a percent)	9.90%
Long-term Debt, by Maturity [Abstract]
2019	$ 0
2020	0
2021	0
2022	650,495,000
2023	0
Later	0
Unamortized debt issuance expense	5,649,000
Unamortized discount of debt instrument	6,802,000
Total repayments of debt	662,946,000
Long-term Foreign Seasonal Borrowings
Debt Instrument [Line Items]
Long-term debt, outstanding	0	10,000,000
Amount outstanding of credit facility	$ 0
Weighted-average interest rate (as a percent)	4.40%
Long-term Debt, by Maturity [Abstract]
2019	$ 0
2020	0
2021	0
2022	0
2023	0
Later	0
Other Long-term Debt
Debt Instrument [Line Items]
Long-term debt, outstanding	869,000	880,000
Amount outstanding of credit facility	$ 0
Weighted-average interest rate (as a percent)	6.00%
Long-term Debt, by Maturity [Abstract]
2019	$ 164,000
2020	334,000
2021	70,000
2022	70,000
2023	70,000
Later	160,000
Notes Payable to Banks
Debt Instrument [Line Items]
Long-term debt, outstanding	427,277,000	475,863,000
Amount outstanding of credit facility	$ 300,445,000
Weighted-average interest rate (as a percent)	6.10%
Long-term Debt, by Maturity [Abstract]
2019	$ 0
2020	0
2021	0
2022	0
2023	0
Later	0
Letter of Credit
Debt Instrument [Line Items]
Long-term debt, outstanding	4,809,000	5,211,000
Amount outstanding of credit facility	7,463,000
Revolving Credit Facility
Debt Instrument [Line Items]
Remaining borrowing capacity of credit facility	60,000,000
Long-term Debt, by Maturity [Abstract]
Maximum allowed unrestricted cash and cash equivalents	180,000,000		$ 180,000,000
Revolving Credit Facility | Secured Debt | ABL Credit Facility
Debt Instrument [Line Items]
Long-term debt, outstanding	0	$ 0
Amount outstanding of credit facility	$ 60,000,000
Weighted-average interest rate (as a percent)	0.00%
Long-term Debt, by Maturity [Abstract]
2019	$ 0
2020	0
2021	0
2022	0
2023	0
Later	0
Maximum allowed unrestricted cash and cash equivalents	$ 180,000,000