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Consolidated Statements of Shareholders' Equity (USD $) In Thousands, unless otherwise specified | Total | Common stock [Member] | Treasury stock [Member] | Capital in excess of stated value [Member] | Retained earnings [Member] | Accumulated other comprehensive loss [Member]
--- | --- | --- | --- | --- | --- | ---
Beginning balance at Mar. 31, 2010 | $ 198,924 | $ 9,482 | $ (2,602) | $ (8,770) | $ 202,134 | $ (1,320)
Beginning balance (in shares) at Mar. 31, 2010 |  | 31,607 | 8,675 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Non-cash share based compensation expense | 2,553 |  |  | 2,553 |  |
Restricted shares issued | 1,061 |  | 33 | 1,028 |  |
Restricted shares issued (in shares) |  |  | 110 |  |  |
Shares issued upon exercise of stock options and SSARs | 0 |  | 6 | (6) |  |
Shares issued upon exercise of stock options and SSARs (in shares) |  |  | 23 |  |  |
Shares withheld for taxes upon exercise of stock options, SSARs or vesting of restricted shares | (238) |  | (12) | (226) |  |
Shares withheld for taxes upon exercise of stock options, SSARs or vesting of restricted shares (in shares) |  |  | (42) |  |  |
Net loss | (55,475) |  |  |  | (55,475) |
Unrealized translation adjustment | 565 |  |  |  |  | 565
Net actuarial gains and prior service cost on define pension plans, net of $467 in taxes | 714 |  |  |  |  | 714
Ending balance at Mar. 31, 2011 | 148,104 | 9,482 | (2,575) | (5,421) | 146,659 | (41)
Ending balance (in shares) at Mar. 31, 2011 |  | (31,607) | (8,584) |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Purchase of treasury shares | (13,173) |  | (481) | (12,692) |  |
Purchase of treasury shares (in shares) |  |  | (1,600) |  |  |
Non-cash share based compensation expense | 2,368 |  |  | 2,368 |  |
Restricted shares issued | 1,089 |  | 39 | 1,050 |  |
Restricted shares issued (in shares) |  |  | 130 |  |  |
Shares issued upon exercise of stock options and SSARs | 210 |  | 179 | 31 |  |
Shares issued upon exercise of stock options and SSARs (in shares) |  |  | 595 |  |  |
Shares withheld for taxes upon exercise of stock options, SSARs or vesting of restricted shares | (1,449) |  | (81) | (1,368) |  |
Shares withheld for taxes upon exercise of stock options, SSARs or vesting of restricted shares (in shares) |  |  | (272) |  |  |
Net loss | (22,783) |  |  |  | (22,783) |
Unrealized translation adjustment | 76 |  |  |  |  | 76
Unrealized loss on securities | (4) |  |  |  |  | (4)
Ending balance at Mar. 31, 2012 | 114,438 | 9,482 | (2,919) | (16,032) | 123,876 | 31
Ending balance (in shares) at Mar. 31, 2012 |  | (31,607) | (9,731) |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Non-cash share based compensation expense | 2,057 |  |  | 2,057 |  |
Restricted shares issued | 0 |  | 61 | (61) |  |
Restricted shares issued (in shares) |  |  | 203 |  |  |
Shares issued upon exercise of stock options and SSARs | 67 |  | 32 | 35 |  |
Shares issued upon exercise of stock options and SSARs (in shares) |  |  | 108 |  |  |
Shares withheld for taxes upon exercise of stock options, SSARs or vesting of restricted shares | (278) |  | (12) | (266) |  |
Shares withheld for taxes upon exercise of stock options, SSARs or vesting of restricted shares (in shares) |  |  | (42) |  |  |
Net loss | (1,298) |  |  |  | (1,298) |
Unrealized translation adjustment | (1,126) |  |  |  |  | (1,126)
Unrealized loss on securities | (4) |  |  |  |  | (4)
Ending balance at Mar. 31, 2013 | $ 113,856 | $ 9,482 | $ (2,838) | $ (14,267) | $ 122,578 | $ (1,099)
Ending balance (in shares) at Mar. 31, 2013 |  | (31,607) | (9,462) |  |  |

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