Condensed Consolidated Balance Sheets (Current period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 13,364	$ 10,364
Accounts receivable (less allowance for doubtful accounts of $215 and $163, respectively)	36,095	39,700
Unbilled accounts receivable	8,235	7,893
Contract assets	259	309
Prepaid expenses	3,339	2,176
Prepaid income taxes and income tax receivable	1,468	4,262
Other current assets	1,190	1,607
Total current assets	63,950	66,311
Property, plant and equipment (less accumulated depreciation of $37,394 and $44,013, respectively)	9,734	10,523
Right-of-use assets	18,011	19,169
Other assets
Intangible assets, net	3,180	3,540
Goodwill	2,398	2,398
Deferred tax assets, net	15,944	16,306
Other long-term assets	1,443	1,737
Total other assets	22,965	23,981
Total assets	114,660	119,984
Current liabilities
Accounts payable and accrued expenses	17,887	22,465
Accrued payroll and related expenses	5,572	6,679
Deferred revenue and customer advances	6,701	4,590
Customer postage and program deposits	1,663	1,223
Other current liabilities	2,680	2,862
Current portion of lease liabilities	5,903	5,747
Total current liabilities	40,406	43,566
Long-term lease liabilities, net of current portion	14,631	16,575
Other long-term liabilities	2,381	3,263
Total liabilities	94,110	101,176
Stockholders’ equity
Common stock, $1 par value, 25,000,000 shares authorized;12,221,484 shares issued, 7,201,071 and 7,702,614 shares outstanding at June 30, 2023 and December 31, 2022, respectively	12,221	12,221
Additional paid-in capital	187,386	218,411
Retained earnings	846,279	846,490
Less treasury stock, 5,020,413 shares at cost at June 30, 2023 and 4,818,870 shares at cost at December 31, 2022	(980,156)	(1,010,012)
Accumulated other comprehensive loss	(45,180)	(48,302)
Total stockholders’ equity	20,550	18,808
Total liabilities and stockholders’ equity	114,660	119,984
Qualified Plan [Member]
Current liabilities
Pension liabilities	17,962	18,674
Nonqualified Plan [Member]
Current liabilities
Pension liabilities	$ 18,730	$ 19,098