Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings	$ 9,863	$ 7,252
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	394	395
Foreign exchange loss	4	20
Amortization of deferred compensation related to restricted stock	146	228
Profit sharing expense funded through the issuance of treasury stock	150	75
Gain on sale of property and equipment	(48)	(33)
Proceeds from sale of demonstration equipment, net of gain	94	8
Deferred income tax benefit	(2,481)
Changes in assets and liabilities:
Trade accounts receivable	24	(866)
Inventories	(406)	(437)
Prepaid expenses and other current assets	126	(54)
Restricted certificates of deposit	200	(450)
Other assets	13	23
Accounts payable	(640)	(905)
Accrued wages and benefits	24	1,134
Accrued sales commissions	(29)	207
Accrued rent	324	(64)
Accrued professional fees	79	(1)
Accrued warranty	(60)	46
Accrued restructuring and other charges		(130)
Customer deposits	341	(7)
Other current liabilities	(256)	126
Deferred rent, net of current portion	(39)	(118)
Net cash provided by operating activities	7,823	6,449
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of property and equipment	(780)	(659)
Proceeds from sale of property and equipment	54
Net cash used in investing activitites	(726)	(659)
CASH FLOWS FROM FINANCING ACTIVITIES
Repayment of notes payable to stockholder		(1,525)
Proceeds from stock options exercised	30
Net cash provided by (used in) financing activities	30	(1,525)
Effects of exchange rates on cash	(65)	(17)
Net cash provided by all activities	7,062	4,248
Cash and cash equivalents at beginning of period	6,895	2,647
Cash and cash equivalents at end of period	13,957	6,895
Cash payments for:
Domestic and foreign income taxes	269	135
Interest	1	76
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Issuance of non-vested shares of restricted stock		448
Forfeiture of non-vested shares of restricted stock	$ (20)	$ (11)