CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net (loss) income	$ (32,433,000)	$ 34,776,000
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Depreciation of property and equipment	14,951,000	12,113,000
Amortization of intangible assets	3,171,000	2,889,000
Amortization of operating lease right of use assets	517,000	722,000
Share-based compensation - equity awards	7,669,000	1,779,000
Amortization of debt financing costs and discounts on debt	1,974,000	1,428,000
Bad debt expense	813,000	58,000
Deferred income taxes	(3,221,000)	0
Gain on disposal of property and equipment	0	(8,000)
Changes in operating assets and liabilities:
Accounts receivable	10,402,000	708,000
Inventory	(955,000)	122,000
Prepaid expenses and other assets	(10,978,000)	(944,000)
Accounts payable	(7,389,000)	(300,000)
Accrued liabilities	(9,456,000)	1,871,000
Net cash (used in) provided by operating activities	(16,381,000)	56,666,000
Cash flows from investing activities:
Capital expenditures, excluding Tiverton Casino Hotel and new hotel at Twin River Casino	(5,448,000)	(13,114,000)
Capital expenditures - Tiverton Casino Hotel	0	(1,824,000)
Capital expenditures - new hotel at Twin River Casino	0	(3,741,000)
Net cash used in investing activities	(55,899,000)	(29,220,000)
Cash flows from financing activities:
Revolver borrowings	250,000,000	25,000,000
Term loan repayments	(1,500,000)	(342,439,000)
Share repurchases	(33,292,000)	(409,000)
Payment of shareholder dividends	(3,199,000)	0
Net cash provided by financing activities	219,508,000	282,009,000
Net change in cash and cash equivalents and restricted cash	147,228,000	309,455,000
Cash and cash equivalents and restricted cash, beginning of period	185,502,000	81,431,000
Cash and cash equivalents and restricted cash, end of period	332,730,000	390,886,000
Supplemental disclosure of cash flow information:
Cash paid for interest	23,402,000	10,960,000
Non-cash investing and financing activities:
Unpaid property and equipment	177,000	614,000
Deposit applied to fixed asset purchases	0	981,000
Termination of operating leases via purchase of underlying assets	0	1,665,000
Stock issued for acquisition of Dover Downs Gaming & Entertainment, Inc.	0	86,780,000
Goodwill and Intangible Asset Impairment	8,554,000	0
Payment, Tax Withholding, Share-based Payment Arrangement	2,564,000	0
Income Taxes Paid, Net	(165,000)	8,794,000
Loss on debt extinguishment and modification of debt	0	1,491,000
Increase (Decrease) in Obligation, Pension and Other Postretirement Benefits	0	(39,000)
Proceeds from Sale of Property, Plant, and Equipment	0	7,000
Payments associated with licenses	0	(942,000)
Repayments of Long-term Lines of Credit	(250,000,000)	(80,000,000)
Proceeds from Issuance of Medium-term Notes	261,180,000	289,345,000
Issuance Of Medium-Term Notes, Fee Amount	13,820,000	10,655,000
Issuance Of Senior Long-Term Debt, Fee Amount	0	6,130,000
Proceeds from Issuance of Senior Long-term Debt	0	393,870,000
Payment of financing fees	(1,117,000)	(3,358,000)
Loyalty Programs
Non-cash investing and financing activities:
Contract liabilities, revenue recognized	2,400,000	4,600,000
Dover Downs
Cash flows from investing activities:
Acquisition of Dover Downs Gaming & Entertainment, Inc., net of cash acquired	0	$ (9,606,000)
Black Hawk Casinos
Cash flows from investing activities:
Acquisition of Dover Downs Gaming & Entertainment, Inc., net of cash acquired	$ (50,451,000)