Condensed Consolidated Balance Sheets - USD ($)	Jun. 30, 2018	Sep. 30, 2017
CURRENT ASSETS
Cash and cash equivalents	$ 2,374,125	$ 2,253,952
Marketable securities	13,459	13,555
Accounts receivable, net	4,304,908	4,349,733
Inventories:
Parts, components, and materials	496,359	783,553
Work-in-process	885,458	985,934
Finished products	4,115,812	4,780,514
Inventory net	5,497,629	6,550,001
Prepaid expenses and other current assets	536,095	782,128
TOTAL CURRENT ASSETS	12,726,216	13,949,369
Property, plant and equipment	6,065,029	6,038,920
Less accumulated depreciation and amortization	(5,778,252)	(5,637,222)
Property, Plant and Equipment Net	286,777	401,698
Other assets	918,331	1,116,583
TOTAL ASSETS	13,931,324	15,467,650
CURRENT LIABILITIES
Line of Credit, Current	5,800,000	0
Accounts payable	2,041,554	3,138,057
Accrued compensation and employee benefits	1,705,454	1,629,175
Accrued expenses	1,066,459	1,169,392
Unearned revenue	483,236	500,878
TOTAL CURRENT LIABILITIES	11,096,703	6,437,502
Long-term Line of Credit, Noncurrent	0	4,950,000
Unearned revenue	264,126	139,601
Other long-term liabilities	1,580,393	1,570,861
TOTAL LIABILITIES	12,941,222	13,097,964
SHAREHOLDERS’ EQUITY
Common stock, par value $.01	182,491	100,448
Capital in excess of par value	43,993,617	40,999,470
Retained earnings	(39,562,191)	(35,136,539)
Less treasury stock, at cost	(3,437,643)	(3,437,643)
Accumulated other comprehensive loss	(186,172)	(156,050)
TOTAL SHAREHOLDERS’ EQUITY	990,102	2,369,686
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$ 13,931,324	$ 15,467,650

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.