Other Balance Sheet And Statement Of Earnings (Loss) Captions (Other Operating Revenue) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Total	$ 10,416	$ 8,201	$ 5,525
Pari-Mutuel Revenue [Member]
Total	3,674	2,643	0
Bowling Revenue [Member]
Total	644	662	803
Other Revenue [Member]
Total	$ 6,098	$ 4,896	$ 4,722

Amount, after sales adjustments, returns, allowances, and discounts, of revenue classified as other.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(a),(d))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration