Condensed Consolidated Balance Sheets (Current period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 13,118	$ 10,364
Accounts receivable (less allowance for doubtful accounts of $229 at March 31, 2023 and $163 at December 31, 2022)	37,238	39,700
Unbilled accounts receivable	6,907	7,893
Contract assets	305	309
Prepaid expenses	3,385	2,176
Prepaid income taxes and income tax receivable	13	4,262
Other current assets	1,213	1,607
Total current assets	62,179	66,311
Property, plant and equipment (less accumulated depreciation of $45,072 at March 31, 2023 and $44,013 at December 31, 2022)	10,103	10,523
Right-of-use assets	19,190	19,169
Other assets
Intangible assets, net	3,360	3,540
Goodwill	2,398	2,398
Deferred tax assets, net	16,083	16,306
Other long-term assets	1,570	1,737
Other assets	23,411	23,981
Total assets	114,883	119,984
Current liabilities
Accounts payable and accrued expenses	19,998	22,465
Accrued payroll and related expenses	3,442	6,679
Deferred revenue and customer advances	4,656	4,590
Customer postage and program deposits	1,327	1,223
Other current liabilities	2,915	2,862
Current portion of lease liabilities	5,927	5,747
Total current liabilities	38,265	43,566
Long-term lease liabilities, net of current portion	16,091	16,575
Other long-term liabilities	2,717	3,263
Total liabilities	93,918	101,176
Stockholders’ equity
Common stock, $1 par value, 25,000,000 shares authorized;12,221,484 shares issued, 7,485,170 and 7,702,614 shares outstanding at March 31, 2023 and December 31, 2022, respectively	12,221	12,221
Additional paid-in capital	197,413	218,411
Retained earnings	845,699	846,490
Less treasury stock, 4,736,314 shares at cost at March 31, 2023 and 4,818,870 shares at cost at December 31, 2022	(988,686)	(1,010,012)
Accumulated other comprehensive loss	(45,682)	(48,302)
Total stockholders’ equity	20,965	18,808
Total liabilities and stockholders’ equity	114,883	119,984
Qualified Plan [Member]
Current liabilities
Pension liabilities	17,988	18,674
Nonqualified Plan [Member]
Current liabilities
Pension liabilities	$ 18,857	$ 19,098