CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating activities:
Net earnings	$ 6,889,000	$ 8,426,000	$ 3,801,000
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation	3,285,000	3,566,000	3,433,000
Amortization of credit facility fees	63,000	65,000	87,000
Stock-based compensation	302,000	364,000	284,000
Deferred income taxes	(966,000)	(4,286,000)	(661,000)
Provision for contingent obligation	424,000	158,000	75,000
Losses on equity investments	90,000
Gain on sale of land	(2,413,000)
Excess tax benefits from stock-based compensation			(27,000)
Changes in assets and liabilities:
Accounts receivable	(200,000)	(57,000)	(246,000)
Inventories	(6,000)	2,000	55,000
Prepaid expenses and other	37,000	(97,000)	(44,000)
Accounts payable	66,000	(252,000)	176,000
Accrued liabilities	38,000	(3,000)	(442,000)
Payable to/receivable from Dover Downs Gaming & Entertainment, Inc.	2,000		51,000
Income taxes payable/receivable	1,284,000	(699,000)	223,000
Contract liabilities	(109,000)	(106,000)	77,000
Liability for pension benefits	(1,835,000)	(1,248,000)	(32,000)
Net cash provided by operating activities	6,951,000	5,833,000	6,810,000
Investing activities:
Capital expenditures	(992,000)	(1,877,000)	(2,580,000)
Proceeds from sale of land, net	4,945,000
Purchases of equity investments	(124,000)	(176,000)	(293,000)
Proceeds from sale of equity investments	90,000	145,000	203,000
Net cash provided by (used in) investing activities	3,919,000	(1,908,000)	(2,670,000)
Financing activities:
Borrowings from revolving line of credit	12,260,000	25,680,000	28,820,000
Repayments on revolving line of credit	(15,500,000)	(26,280,000)	(30,880,000)
Dividends paid	(2,930,000)	(2,944,000)	(1,840,000)
Repurchase of common stock	(750,000)	(381,000)	(189,000)
Excess tax benefits from stock-based compensation			27,000
Credit facility fees			(78,000)
Net cash used in financing activities	(6,920,000)	(3,925,000)	(4,140,000)
Net increase in cash	3,950,000
Cash, beginning of year	1,000	1,000	1,000
Cash, end of year	3,951,000	1,000	1,000
Supplemental information:
Interest paid	72,000	368,000	367,000
Income tax payments	1,861,000	3,097,000	3,025,000
Change in accounts payable for capital expenditures	$ 60,000	$ (34,000)	$ 34,000