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Share-Based Payments (Tables) | 12 Months Ended
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Mar. 31, 2015
Disclosure Of Compensation Related Costs, Share-Based Payments [Abstract] |
Schedule of grant using the black scholes option-pricing model with weighted-average assumptions |
|  | 2015 |  |  | 2013 |
Risk-free interest rate |  |  | 1.68 | % |  |  | 0.71 | %
Weighted average expected original term |  |  | 5 years |  |  |  | 5 years |
Expected volatility |  |  | 23 | % |  |  | 48 | %
Expected dividend yield |  |  | 3.65 | % |  |  | 3.20 | %
Schedule of option activity under the equity plans |
Options |  | Shares |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Term |  |  | Aggregate Intrinsic Value |
Outstanding at March 31, 2014 |  |  | 372,881 |  |  | $ | 5.45 |  |  |  |  |  |  |  |  |
Granted |  |  | 145,000 |  |  | $ | 13.62 |  |  |  |  |  |  |  |  |
Exercised |  |  | (150,911 | ) |  | $ | 2.58 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (3,480 | ) |  | $ | 9.49 |  |  |  |  |  |  |  |  |
Outstanding at March 31, 2015 |  |  | 363,490 |  |  | $ | 9.86 |  |  |  | 6.53 |  |  | $ | 1,537,174 |
Exercisable at March 31, 2015 |  |  | 166,957 |  |  | $ | 6.27 |  |  |  | 3.95 |  |  | $ | 1,292,143 |
Schedule of non-vested restricted shares under the 2006 plan |
Restricted Share Awards |  | Shares |  |  | Weighted Average Grant Date Fair Value |  |  | Weighted Average Remaining Contractual Term |  |  | Aggregate Intrinsic Value |
Non-vested at March 31, 2014 |  |  | 50,000 |  |  | $ | 12.92 |  |  |  |  |  |  |  |  |
Granted |  |  | 44,000 |  |  | $ | 14.22 |  |  |  |  |  |  |  |  |
Vested |  |  | (5,000 | ) |  | $ | 12.87 |  |  |  |  |  |  |  |  |
Forfeited |  |  | — |  |  | $ | — |  |  |  |  |  |  |  |  |
Non-vested at March 31, 2015 |  |  | 89,000 |  |  | $ | 13.56 |  |  |  | 1.64 |  |  | $ | 1,246,890 |

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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