Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

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A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

+ References

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Amount of direct write-downs of accounts receivable charged against the allowance.

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Accounts Receivable (Details) (USD $)	12 Months Ended
Accounts Receivable (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accounts Receivable, Net, Current [Abstract]
Accounts receivable, gross	$ 80,136,000us-gaap_AccountsReceivableGrossCurrent	$ 50,910,000us-gaap_AccountsReceivableGrossCurrent
Accounts receivable, allowance for doubtful accounts	(4,246,000)	(4,338,000)
Accounts receivable, net	75,890,000us-gaap_AccountsReceivableNetCurrent	46,572,000us-gaap_AccountsReceivableNetCurrent
Bad debt expense		(2,500,000)
Big Fish Games [Member]
Accounts Receivable, Net, Current [Abstract]
Accounts receivable, net	28,900,000
TwinSpires [Member]
Accounts Receivable, Net, Current [Abstract]
Bad debt expense	(700,000)	(500,000)	(900,000)
Simulcast and ADW Receivables
Accounts Receivable, Net, Current [Abstract]
Accounts receivable, gross	17,282,000	19,768,000
Trade Account Receivable
Accounts Receivable, Net, Current [Abstract]
Accounts receivable, gross	46,985,000	16,129,000
PSL and Hospitality Receivables
Accounts Receivable, Net, Current [Abstract]
Accounts receivable, gross	10,877,000	9,410,000
Other receivables
Accounts Receivable, Net, Current [Abstract]
Accounts receivable, gross	$ 4,992,000	$ 5,603,000