Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from (used in) operating activities
Net income	$ 436	$ 261
Adjustments to reconcile net income to net cash from (used in) operating activities:
Depreciation	54	32
Gain on sales of available-for-sale securities	(401)	0
Deferred income taxes	23	(1)
Interest accrued on investments	(1)	0
Change in allowance for doubtful accounts	(2)	(1)
Change in:
Trade receivables	(150)	(62)
Inventories	8	7
Other current assets	(35)	17
Accounts payable	(4)	79
Accrued expenses	38	76
Accrued income taxes	(249)	58
Net cash from (used in) operating activities	(283)	466
Cash flows from (used in) investing activities
Proceeds from sale of available-for-sale securities	405	0
Purchase of treasury bills	(5,426)	0
Proceeds from the maturity of treasury bills	5,251	0
Purchase of property and equipment	(12)	(42)
Net cash from (used in) investing activities	218	(42)
Cash flows from (used in) financing activities
Proceeds from issuance of common stock	6	4
Dividends paid	(272)	(270)
Net cash used in financing activities	(266)	(266)
Net increase (decrease) in cash and cash equivalents	(331)	158
Cash and cash equivalents, beginning	1,102	5,476
Cash and cash equivalents, ending	771	5,634
Supplemental schedule of non-cash investing and financing activities
Net change in unrealized loss on available-for-sale securities	(600)	(115)
Supplemental cash flow information
Cash paid for income taxes	$ 394	$ 109