Consolidated Statements Of Cash Flows (unaudited) (USD $)	6 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities
Net income	$ 1,985,000	$ 3,750,000
Adjustments to reconcile net income to net cash provided by operations
Depreciation and amortization	909,000	245,000
Deferred income taxes	193,000	212,000
Net premium amortized and discount earned on bonds and U.S. Treasury Bills	(1,000)	(1,000)
Decrease (increase) in current assets (net of acquisition)
Accounts receivable, net	635,000	1,929,000
Inventories	3,000	13,000
Prepaid expenses and other assets	(132,000)	(76,000)
Increase (decrease) in current liabilities (net of acquisition)
Accounts payable	(558,000)	(354,000)
Accrued liabilities	(2,164,000)	(1,325,000)
Income taxes	(626,000)	(435,000)
Cash flows from investing activities
Maturities and sales of U.S. Treasury Bills	800,000	13,100,000
Purchases of U.S. Treasury Bills		(500,000)
Acquisition of New Dawn Technologies, Inc. (net of cash acquired)	(11,878,000)
Purchases of marketable securities		(13,581,000)
Purchases of property, plant and equipment	(156,000)	(300,000)
Net cash used in investing activities	(11,234,000)	(1,281,000)
Cash flows from financing activities
Investment margin account borrowing	14,000,000
Cash provided by financing activities	14,000,000
Increase in cash and cash equivalents	3,808,000	2,820,000
Cash and cash equivalents
Beginning of period	985,000	3,058,000
End of period	4,793,000	5,878,000
Subscription Arrangement [Member]
Increase (decrease) in current liabilities (net of acquisition)
Deferred revenues	35,000	110,000
Deferred Maintenance Agreements [Member]
Increase (decrease) in current liabilities (net of acquisition)
Deferred revenues	162,000	33,000
Deferred Installation Contracts [Member]
Increase (decrease) in current liabilities (net of acquisition)
Deferred revenues	601,000
Net cash provided by operating activities	$ 1,042,000	$ 4,101,000