Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities
Net income	$ 330	$ 350
Adjustments to reconcile net income to net cash from (used in) operating activities:
Depreciation	42	72
Deferred income taxes	24	(16)
Interest accrued on investments	(3)	(2)
Loss on disposal of fixed assets	18	0
(Increase)/decrease in:
Trade receivables	(251)	99
Inventories	(164)	(167)
Other current assets	(17)	(3)
Income tax receivable	54	0
Accounts payable	77	78
Accrued expenses	176	110
Deferred revenue	(12)	(3)
Accrued income taxes	40	72
Net cash from operating activities	314	590
Cash flows from (used in) investing activities
Purchase of treasury bills	(4,300)	(10,246)
Proceeds from the maturity of treasury bills	9,500	10,030
Purchase of property and equipment	(69)	(41)
Net cash from (used in) investing activities	5,131	(257)
Cash flows from (used in) financing activities
Proceeds from issuance of stock	21	12
Dividends paid	(408)	(405)
Net cash used in financing activities	(387)	(393)
Net increase (decrease) in cash and cash equivalents	5,058	(60)
Cash and cash equivalents, beginning	583	746
Cash and cash equivalents, ending	5,641	686
Supplemental schedule of non-cash investing and financing activities
Net change in unrealized gain on available for sale securities	(301)	338
Cash paid for income taxes	$ 112	$ 187