STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Operating Activities:
Net loss	$ (4,300,000)	$ (5,021,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	477,000	1,647,000
Impairment loss	159,000	2,014,000
Gain on sale of custom print business	(195,000)	0
Loss on sale of property and equipment	35,000	0
Changes in allowance for doubtful accounts	70,000	43,000
Deferred income tax benefit	0	(504,000)
Stock-based compensation expense	172,000	422,000
Changes in operating assets and liabilities:
Accounts receivable	2,041,000	1,161,000
Inventories	135,000	31,000
Income tax receivable	(115,000)	1,000
Prepaid expenses and other	(327,000)	(69,000)
Accounts payable	115,000	(224,000)
Accrued liabilities	79,000	(1,680,000)
Accrued income taxes	34,000	30,000
Deferred revenue	40,000	(162,000)
Net cash used in operating activities	(1,580,000)	(2,311,000)
Investing Activities:
Purchases of property and equipment	(61,000)	(398,000)
Purchases of held to maturity investments	0	(4,981,000)
Proceeds from sale of custom print business	200,000	0
Proceeds from sale of held to maturity investments	0	4,981,000
Net cash provided by (used in) investing activities	139,000	(398,000)
Financing Activities:
Cash dividends paid ($4.90 per share)	(14,000)	(14,000)
Proceeds from issuance of common stock	20,000	108,000
Repurchase of common stock upon vesting of restricted stock awards and vesting of restricted stock units	(1,000)	(35,000)
Proceeds from PPP loan	1,054,000	0
Net cash provided by financing activities	1,059,000	59,000
Decrease in cash and cash equivalents	(382,000)	(2,650,000)
Cash and cash equivalents at beginning of year	7,510,000	10,160,000
Cash and cash equivalents at end of year	7,128,000	7,510,000
Supplemental disclosures for cash flow information:
Cash paid (refunded) during the year for income taxes	(112,000)	8,000
Non-cash investing and financing activities:
Purchase of property and equipment included in accounts payable	11,000	0
Cash dividends declared included in accounts payable	0	28,000
Receivable recorded from sale of custom print business	100,000	0
Receivables recorded from sale of property and equipment	195,000	0
Common stock issued for accrued liabilities	$ 9,000	$ 0