Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 24,913	$ 29,408
Restricted cash	1,582	4,154
Accounts receivable (less allowance for doubtful accounts of $349 at March 31, 2021 and $241 at December 31, 2020)	45,405	41,533
Contract assets	326	613
Inventory	42	46
Prepaid expenses	3,986	2,256
Prepaid income taxes and income tax receivable	6,822	7,388
Other current assets	814	840
Total current assets	83,890	86,238
Property, plant and equipment (less accumulated depreciation of $69,859 at March 31, 2021 and $69,662 at December 31, 2020)	5,951	5,878
Right-of-use assets	24,190	24,750
Other assets	2,831	2,632
Total assets	116,862	119,498
Current liabilities
Accounts payable and accrued expenses	16,136	16,294
Accrued payroll and related expenses	6,811	5,248
Short-term debt	8,730	4,926
Deferred revenue and customer advances	5,203	4,661
Customer postage and program deposits	6,105	6,497
Other current liabilities	2,947	2,903
Short-term lease liabilities	7,130	6,663
Total current liabilities	53,062	47,192
Long-term debt, net of current portion	18,370	22,174
Pensions	66,544	67,490
Long-term lease liabilities, net of current portion	20,582	21,295
Other long-term liabilities	3,004	4,747
Total liabilities	161,562	162,898
Preferred Stock, $1 par value, 1,000,000 shares authorized; 9,926 shares of Series A Convertible Preferred Stock, issued and outstanding	9,723	9,723
Stockholders’ deficit
Common stock, $1 par value, 25,000,000 shares authorized;12,121,484 shares issued, 6,666,984 and 6,599,309 shares outstanding at March 31, 2021 and December 31, 2020, respectively	12,121	12,121
Additional paid-in capital	367,243	383,043
Retained earnings	794,365	796,123
Less treasury stock, 5,454,500 shares at cost at March 31, 2021 and 5,522,175 shares at cost at December 31, 2020	(1,162,819)	(1,178,799)
Accumulated other comprehensive loss	(65,333)	(65,611)
Total stockholders’ deficit	(54,423)	(53,123)
Total liabilities, Preferred Stock and stockholders’ deficit	$ 116,862	$ 119,498