Debt (Details) (USD $)	Mar. 31, 2014	Mar. 31, 2013	Jan. 25, 2011
Debt Instrument [Line Items]
Capital lease obligations	$ 3,608,000	$ 3,665,000
Total senior debt	3,608,000	3,665,000
7 7/8% Senior Subordinated Notes due February 1, 2019 with interest payable in semi-annual installments (net of the unamortized discount of $1,315 and $1,588, respectively)	148,685,000	148,412,000
Total	152,293,000	152,077,000
Current portion of long-term debt	1,588,000	1,024,000
Long-term debt, less current portion	150,705,000	151,053,000
Maturities of Long-term Debt [Abstract]
2015	1,610,000
2016	787,000
2017	616,000
2018	551,000
2019	150,034,000
Thereafter	10,000
Total principal payments	153,608,000		150,000,000.00
Line of Credit | New Revolving Credit Facility
Debt Instrument [Line Items]
Unamortized discount	$ 1,315,000	$ 1,588,000