CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands |
Jun. 30, 2017 |
Mar. 31, 2017 |
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Trade accounts receivable, allowances (in dollars) | $ 27,385 | $ 32,354 |
| Inventory reserves | 8,451 | 7,638 |
| Accumulated depreciation | 199,777 | 190,758 |
| Accumulated amortization | $ 56,810 | $ 54,361 |
| Common stock, par value (in dollars per share) | $ 0.01 | $ 0.01 |
| Common stock, authorized shares (in shares) | 125,000,000 | 125,000,000 |
| Common stock, issued shares (in shares) | 31,999,000 | 31,987,000 |
| Common stock, outstanding shares (in shares) | 31,999,000 | 31,987,000 |