Accounts Receivable - Net (Details) - USD ($) |
Sep. 30, 2016 |
Mar. 31, 2016 |
|---|---|---|
| Accounts Receivable - Net [Abstract] | ||
| Accounts receivable - trade | $ 65,494,000 | $ 62,206,000 |
| Allowance for bad debts | (4,300,000) | (4,284,000) |
| Customer allowances earned | (9,538,000) | (12,029,000) |
| Customer payment discrepancies | (703,000) | (703,000) |
| Customer returns RGA issued | (15,619,000) | (6,561,000) |
| Customer core returns accruals | (19,222,000) | (30,081,000) |
| Less: total accounts receivable offset accounts | (49,382,000) | (53,658,000) |
| Total accounts receivable - net | $ 16,112,000 | $ 8,548,000 |