Consolidated Balance Sheets (Unaudited) (USD $) | Mar. 31, 2014 | Sep. 30, 2013 |
Current assets | ' | ' |
Cash and cash equivalents | $11,274,000 | $11,338,000 |
Marketable securities, including common stocks of $160,128,000 and bonds of $7,900,000 at March 31, 2014 and common stocks of $129,699,000 and bonds of $7,295,000 at September 30, 2013 | 168,028,000 | 136,994,000 |
Accounts receivable, less allowance for doubtful accounts of $250,000 at March 31, 2014 and September 30, 2013, respectively | 6,339,000 | 6,314,000 |
Inventories | 38,000 | 56,000 |
Prepaid expenses and other assets | 1,531,000 | 1,958,000 |
Income tax receivable | 16,000 | 305,000 |
Total current assets | 187,226,000 | 156,965,000 |
Property, plant and equipment, at cost | ' | ' |
Land, buildings and improvements | 12,847,000 | 12,847,000 |
Furniture, office equipment and computer software | 2,781,000 | 2,712,000 |
Machinery and equipment | 2,039,000 | 2,014,000 |
| 17,667,000 | 17,573,000 |
Less accumulated depreciation | -8,558,000 | -8,343,000 |
| 9,109,000 | 9,230,000 |
Intangibles, net | 20,191,000 | 22,637,000 |
Goodwill | 13,400,000 | 13,400,000 |
Deferred income taxes | 1,248,000 | 858,000 |
| 231,174,000 | 203,090,000 |
Current liabilities | ' | ' |
Accounts payable | 4,193,000 | 4,259,000 |
Accrued liabilities | 3,042,000 | 4,443,000 |
Income tax payable | 79,000 | ' |
Deferred income taxes | 44,313,000 | 32,132,000 |
Total current liabilities | 68,447,000 | 58,111,000 |
Long term liabilities | ' | ' |
Investment margin account borrowings | 29,493,000 | 29,493,000 |
Deferred maintenance agreements | 238,000 | 269,000 |
Accrued liabilities | 1,370,000 | 1,870,000 |
Total long term liabilities | 31,101,000 | 31,632,000 |
Commitments and contingencies (Note 11) | ' | ' |
Shareholders' equity | ' | ' |
Preferred stock, $.01 par value, 5,000,000 shares authorized and no shares issued | 0 | 0 |
Common stock, $.01 par value, 5,000,000 shares authorized; 1,380,746 shares at March 31, 2014 and September 30, 2013, outstanding | 14,000 | 14,000 |
Additional paid-in capital | 1,755,000 | 1,755,000 |
Retained earnings | 57,083,000 | 57,670,000 |
Accumulated other comprehensive income | 72,774,000 | 53,908,000 |
Total shareholders' equity | 131,626,000 | 113,347,000 |
| 231,174,000 | 203,090,000 |
Subscription Arrangement [Member] | ' | ' |
Current liabilities | ' | ' |
Deferred | 3,551,000 | 3,534,000 |
Deferred Installation Contracts [Member] | ' | ' |
Current liabilities | ' | ' |
Deferred | 7,764,000 | 6,879,000 |
Deferred Maintenance Agreement [Member] | ' | ' |
Current liabilities | ' | ' |
Deferred | $5,505,000 | $6,864,000 |