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Stock Compensation Plans (Tables) | 12 Months Ended
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Mar. 31, 2013
Stock Compensation Plans [Abstract] |
Black-Scholes option-pricing model with weighted average assumption |
|  | Year ended March 31, |
|  | 2013 |  |  | 2012 |  |  | 2011 |
Expected life |  |  | 3 years |  |  |  | 3 years |  |  |  | 3 years |
Volatility |  |  | 43.17 | % |  |  | 75.86 | % |  |  | 93.19 | %
Risk-free interest rate |  |  | .38 | % |  |  | .83 | % |  |  | 1.20 | %
Dividend yield |  |  | .38 | % |  |  | .47 | % |  |  | .51 | %
Stock option awards |
|  | Shares Under Option |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Term |  |  | Aggregate Intrinsic Value |
Outstanding at April 1, 2010 |  |  | 175 |  |  | $ | 10.37 |  |  |  |  |  |  |  |  |
Granted |  |  | 20 |  |  | $ | 15.25 |  |  |  |  |  |  |  |  |
Exercised |  |  | (36 | ) |  | $ | 6.52 |  |  |  |  |  |  |  |  |
Outstanding at March 31, 2011 |  |  | 159 |  |  | $ | 11.87 |  |  |  |  |  |  |  |  |
Granted |  |  | 9 |  |  | $ | 21.19 |  |  |  |  |  |  |  |  |
Exercised |  |  | (50 | ) |  | $ | 7.72 |  |  |  |  |  |  |  |  |
Expired |  |  | (3 | ) |  | $ | 30.88 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (1 | ) |  | $ | 18.09 |  |  |  |  |  |  |  |  |
Outstanding at March 31, 2012 |  |  | 114 |  |  | $ | 13.90 |  |  |  |  |  |  |  |  |
Granted |  |  | 49 |  |  | $ | 18.65 |  |  |  |  |  |  |  |  |
Exercised |  |  | (13 | ) |  | $ | 6.35 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (4 | ) |  | $ | 18.65 |  |  |  |  |  |  |  |  |
Outstanding at March 31, 2013 |  |  | 146 |  |  | $ | 16.04 |  |  |  | 6.49 years |  |  | $ | 1,384 |
Vested or expected to vest at March 31, 2013 |  |  | 141 |  |  | $ | 15.96 |  |  |  | 6.41 years |  |  | $ | 1,348 |
Exercisable at March 31, 2013 |  |  | 89 |  |  | $ | 14.44 |  |  |  | 4.98 years |  |  | $ | 1,028 |
Stock options outstanding |
Exercise Price |  | Options Outstanding at March 31, 2013 |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Life (in years) |
$ 2.50 |  |  | 5 |  |  | $ | 2.50 |  |  |  | 1.58 |
5.56-8.01 |  |  | 31 |  |  |  | 6.98 |  |  |  | 3.73 |
12.52-15.25 |  |  | 42 |  |  |  | 14.91 |  |  |  | 6.38 |
18.65-21.19 |  |  | 54 |  |  |  | 19.06 |  |  |  | 9.01 |
30.88-44.50 |  |  | 14 |  |  |  | 32.71 |  |  |  | 5.19 |
2.50-44.50 |  |  | 146 |  |  |  | 16.04 |  |  |  | 6.49 |
Schedule of restricted stock awards |
|  | Restricted Stock |  |  | Weighted Average Grant Date Fair Value |  |  | Aggregate Intrinsic Value |
Non-vested at March 31, 2010 |  |  | 19 |  |  | $ | 16.15 |  |  |  |  |
Granted |  |  | 24 |  |  | $ | 15.25 |  |  |  |  |
Vested |  |  | (11 | ) |  | $ | 15.28 |  |  |  |  |
Non-vested at March 31, 2011 |  |  | 32 |  |  | $ | 15.77 |  |  |  |  |
Granted |  |  | 32 |  |  | $ | 20.91 |  |  |  |  |
Vested |  |  | (15 | ) |  | $ | 15.84 |  |  |  |  |
Non-vested at March 31, 2012 |  |  | 49 |  |  | $ | 19.11 |  |  |  |  |
Granted |  |  | 26 |  |  | $ | 18.65 |  |  |  |  |
Vested |  |  | (8 | ) |  | $ | 22.02 |  |  |  |  |
Forfeited |  |  | (6 | ) |  | $ | 19.19 |  |  |  |  |
Non-vested at March 31, 2013 |  |  | 61 |  |  | $ | 18.51 |  |  | $ | 379 |

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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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