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The Company and Its Accounting Policies (Tables) | 12 Months Ended
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Mar. 31, 2016
Accounting Policies [Abstract] |
Summary of Costs and Estimated Earnings on Contracts | A summary of costs and estimated earnings on contracts in progress at March 31, 2016 and 2015 is as follows:
|  | March 31, |
|  | 2016 |  |  | 2015 |
Costs incurred since inception on contracts in progress |  | $ | 35,893 |  |  | $ | 64,912 |
Estimated earnings since inception on contracts in progress |  |  | 1,185 |  |  |  | 16,067 |
|  |  | 37,078 |  |  |  | 80,979 |
Less billings to date |  |  | 38,267 |  |  |  | 69,636 |
Net under (over) billings |  | $ | (1,189 | ) |  | $ | 11,343 |
Accompanying Consolidated Balance Sheets | The above activity is included in the accompanying Consolidated Balance Sheets under the following captions at March 31, 2016 and 2015 or Notes to Consolidated Financial Statements:
|  | March 31, |
|  | 2016 |  |  | 2015 |
Unbilled revenue |  | $ | 11,852 |  |  | $ | 18,665 |
Progress payments reducing inventory (Note 2) |  |  | (4,641 | ) |  |  | (3,143 | )
Customer deposits |  |  | (8,400 | ) |  |  | (4,179 | )
Net under (over) billings |  | $ | (1,189 | ) |  | $ | 11,343 |
Reconciliation of Numerators and Denominators of Basic and Diluted Income Per Share | A reconciliation of the numerators and denominators of basic and diluted income per share is presented below:
|  | Year ended March 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |
Basic income per share: |  |  |  |  |  |  |  |  |  |  |  |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 6,131 |  |  | $ | 14,735 |  |  | $ | 10,145 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted common shares outstanding |  |  | 9,976 |  |  |  | 10,123 |  |  |  | 10,056 |
Share equivalent units ("SEUs") outstanding |  |  | — |  |  |  | — |  |  |  | 14 |
Weighted average common shares and SEUs outstanding |  |  | 9,976 |  |  |  | 10,123 |  |  |  | 10,070 |
Basic income per share |  | $ | 0.61 |  |  | $ | 1.46 |  |  | $ | 1.01 |
Diluted income per share: |  |  |  |  |  |  |  |  |  |  |  |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 6,131 |  |  | $ | 14,735 |  |  | $ | 10,145 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares and SEUs outstanding |  |  | 9,976 |  |  |  | 10,123 |  |  |  | 10,070 |
Stock options outstanding |  |  | 7 |  |  |  | 20 |  |  |  | 34 |
Weighted average common and potential common shares outstanding |  |  | 9,983 |  |  |  | 10,143 |  |  |  | 10,104 |
Diluted income per share |  | $ | 0.61 |  |  | $ | 1.45 |  |  | $ | 1.00 |
Schedule of Effects of Retrospective Application of Provision in Condensed Consolidated Balance Sheet | The following table presents the impact of applying the provisions retrospectively on individual line items in the Company’s Consolidated Balance Sheet at March 31, 2015:
Balance Sheet Caption |  | Before Application of Guidance |  |  | Reclassification |  |  | After Application of Guidance |
Current deferred income tax asset |  | $ | 647 |  |  | $ | (647 | ) |  | $ | — |
Other assets |  | $ | 150 |  |  | $ | (4 | ) |  | $ | 146 |
Current deferred income tax liability |  | $ | (164 | ) |  | $ | 164 |  |  | $ | — |
Long-term deferred income tax liability |  | $ | (6,363 | ) |  | $ | 487 |  |  | $ | (5,876 | )

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