Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Operating revenues:
Gaming	$ 515,053	$ 486,557	$ 1,050,801	$ 968,492
Food and beverage	105,269	94,585	211,401	186,662
Room	69,628	60,459	135,625	117,050
Other	35,825	33,276	71,657	66,307
Gross revenues	725,775	674,877	1,469,484	1,338,511
Less promotional allowances	110,553	100,474	221,179	199,162
Net revenues	615,222	574,403	1,248,305	1,139,349
Operating costs and expenses:
Gaming	240,253	223,173	489,208	449,782
Food and beverage	60,359	50,080	114,437	97,648
Room	15,931	13,514	30,066	26,335
Other	26,691	27,335	52,752	53,574
Selling, general and administrative	110,454	96,783	220,171	192,571
Maintenance and utilities	39,570	36,773	78,333	74,188
Depreciation and amortization	50,702	48,488	100,716	99,072
Corporate expense	13,009	12,264	25,880	25,544
Preopening expenses	2,210	1,741	3,870	3,572
Other operating items, net	(2,196)	2,262	(1,949)	6,969
Total operating costs and expenses	556,983	512,413	1,113,484	1,029,255
Operating income	58,239	61,990	134,821	110,094
Other expense (income):
Interest income	(408)	(20)	(412)	(25)
Interest expense, net	64,788	66,694	128,616	123,985
Fair value adjustment of derivative instruments	0	48	0	265
Loss on early retirements of debt	0	0	0	20
Total other expense, net	64,380	66,722	128,204	124,245
Income (loss) before income taxes	(6,141)	(4,732)	6,617	(14,151)
Income taxes	5,450	(911)	(833)	2,197
Net income (loss)	(691)	(5,643)	5,784	(11,954)
Net loss attributable to noncontrolling interest	1,668	2,692	1,045	5,482
Net income (loss) attributable to Boyd Gaming Corporation	$ 977	$ (2,951)	$ 6,829	$ (6,472)
Basic net income (loss) per common share:	$ 0.01	$ (0.03)	$ 0.08	$ (0.07)
Weighted average basic shares outstanding	87,588	87,204	87,559	87,181
Diluted net income (loss) per common share:	$ 0.01	$ (0.03)	$ 0.08	$ (0.07)
Weighted average diluted shares outstanding	87,829	87,204	87,978	87,181