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Nature of Operations and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Basic and Diluted EPS | The following presents the calculation of the basic and diluted EPS for the years ended September 30, 2017, 2016 and 2015:
|  | 2017 |  |  | 2016 |  |  | 2015 |
|  | Net Income |  |  | Shares |  |  | EPS |  |  | Net Income |  |  | Shares |  |  | EPS |  |  | Net Loss |  |  | Shares |  |  | EPS |
Basic EPS |  | $ | 8,418,000 |  |  |  | 14,396,000 |  |  | $ | 0.58 |  |  | $ | 7,043,000 |  |  |  | 14,334,000 |  |  | $ | 0.49 |  |  | $ | (1,819,000 | ) |  |  | 14,283,000 |  |  | $ | (0.13 | )
Common stock equivalents |  |  |  |  |  |  | 284,000 |  |  |  |  |  |  |  |  |  |  |  | 190,000 |  |  |  |  |  |  |  |  |  |  |  | — |  |  |  |  |
Diluted EPS |  | $ | 8,418,000 |  |  |  | 14,680,000 |  |  | $ | 0.57 |  |  | $ | 7,043,000 |  |  |  | 14,524,000 |  |  | $ | 0.48 |  |  | $ | (1,819,000 | ) |  |  | 14,283,000 |  |  | $ | (0.13 | )
Company's Assets Measured at Fair Value | The following table sets forth by level, within the fair value hierarchy, the Company’s assets measured at fair value as of September 30, 2017:
|  | Fair Value Measurements |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Equities |  | $ | 11,338,000 |  |  | $ | — |  |  | $ | — |  |  | $ | 11,338,000 |
Mutual Funds |  |  | 7,155,000 |  |  |  | — |  |  |  | — |  |  |  | 7,155,000 |
Exchange-Traded Funds |  |  | 3,417,000 |  |  |  | — |  |  |  | — |  |  |  | 3,417,000 |
Corporate Bonds |  |  | — |  |  |  | 7,196,000 |  |  |  | — |  |  |  | 7,196,000 |
Government Securities |  |  | 54,542,000 |  |  |  | — |  |  |  | — |  |  |  | 54,542,000 |
Cash and Money Funds |  |  | 4,238,000 |  |  |  | — |  |  |  | — |  |  |  | 4,238,000 |
Total |  | $ | 80,690,000 |  |  | $ | 7,196,000 |  |  | $ | — |  |  | $ | 87,886,000 |
Net unrealized gains reported during fiscal 2017 on trading securities still held as of September 30, 2017, were $1,183,000. There were no transfers of investments between Level 1 and Level 2 during the year ended September 30, 2017. The following table sets forth by level, within the fair value hierarchy, the Company’s assets measured at fair value as of September 30, 2016:
|  | Fair Value Measurements |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Equities |  | $ | 2,408,000 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,408,000 |
Mutual Funds |  |  | 5,212,000 |  |  |  | — |  |  |  | — |  |  |  | 5,212,000 |
Exchange-Traded Funds |  |  | 510,000 |  |  |  | — |  |  |  | — |  |  |  | 510,000 |
Government Securities |  |  | 69,583,000 |  |  |  | — |  |  |  | — |  |  |  | 69,583,000 |
Cash and Money Funds |  |  | 8,225,000 |  |  |  | — |  |  |  | — |  |  |  | 8,225,000 |
Total |  | $ | 85,938,000 |  |  | $ | — |  |  | $ | — |  |  | $ | 85,938,000 |
Schedule of Changes in Allowance for Slow Move and Obsolete Inventories | Changes in the allowance for slow move and obsolete inventories are as follows:
|  | 2017 |  |  | 2016 |  |  | 2015 |
Balance, beginning of year |  | $ | 3,869,000 |  |  | $ | 3,310,000 |  |  | $ | 3,139,000 |
Charged to cost of sales |  |  | 77,000 |  |  |  | 621,000 |  |  |  | 144,000 |
Disposal of inventory, net of recoveries |  |  | (120,000 | ) |  |  | (62,000 | ) |  |  | 27,000 |
Balance, end of year |  | $ | 3,826,000 |  |  | $ | 3,869,000 |  |  | $ | 3,310,000 |
Estimated Useful Lives of Assets | Depreciation of property and equipment is computed using the straight-line method over the estimated useful lives of the related assets, as follows:
|  | Years |
Land improvements |  |  | 15 |
Buildings and improvements |  |  | 6-40 |
Equipment |  |  | 2-10 |
Schedule of Changes in Accrual for Warranty and Related Costs | Changes in the accrual for warranty and related costs are composed of the following:
|  | 2017 |  |  | 2016 |  |  | 2015 |
Balance, beginning of year |  | $ | 401,000 |  |  | $ | 205,000 |  |  | $ | 367,000 |
Warranties issued |  |  | 400,000 |  |  |  | 475,000 |  |  |  | 20,000 |
Warranties settled |  |  | (389,000 | ) |  |  | (279,000 | ) |  |  | (182,000 | )
Balance, end of year |  | $ | 412,000 |  |  | $ | 401,000 |  |  | $ | 205,000 |
Schedule of Changes in Allowance for Doubtful Accounts | Changes in the allowance for doubtful accounts are composed of the following:
|  | 2017 |  |  | 2016 |  |  | 2015 |
Balance, beginning of year |  | $ | 195,000 |  |  | $ | 357,000 |  |  | $ | 244,000 |
Provision for doubtful accounts |  |  | 115,000 |  |  |  | 105,000 |  |  |  | 60,000 |
Provision for estimated returns and allowances |  |  | 385,000 |  |  |  | 175,000 |  |  |  | 170,000 |
Uncollectible accounts written-off |  |  | (16,000 | ) |  |  | (89,000 | ) |  |  | (46,000 | )
Returns and allowances issued |  |  | (472,000 | ) |  |  | (353,000 | ) |  |  | (71,000 | )
Balance, end of year |  | $ | 207,000 |  |  | $ | 195,000 |  |  | $ | 357,000 |
Revenues and Long-Term Assets Information Concerning Principal Geographic Areas | Information concerning principal geographic areas is as follows:
|  | 2017 |  |  | 2016 |  |  | 2015 |
|  | Revenues |  |  | Long-Term Assets |  |  | Revenues |  |  | Long-Term Assets |  |  | Revenues |  |  | Long-Term Assets |
United States |  | $ | 80,608,000 |  |  | $ | 5,775,000 |  |  | $ | 69,991,000 |  |  | $ | 5,292,000 |  |  | $ | 39,230,000 |  |  | $ | 7,778,000 |
Other |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Total |  | $ | 80,608,000 |  |  | $ | 5,775,000 |  |  | $ | 69,991,000 |  |  | $ | 5,292,000 |  |  | $ | 39,230,000 |  |  | $ | 7,778,000 |

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