Other Balance Sheet Captions (Schedule of Accounts Payable and Accrued Liabilities) (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Accounts Payable And Accrued Liabilities [Line Items]
Accounts payable and accrued liabilities	$ 6,379	$ 6,666
Accounts Payable [Member]
Accounts Payable And Accrued Liabilities [Line Items]
Accounts payable and accrued liabilities	1,305	1,237
Accrued Commissions (AGLC) [Member]
Accounts Payable And Accrued Liabilities [Line Items]
Accounts payable and accrued liabilities	1,946	2,090
Progressive Slot And Table Liability [Member]
Accounts Payable And Accrued Liabilities [Line Items]
Accounts payable and accrued liabilities	935	852
Player Point Liability [Member]
Accounts Payable And Accrued Liabilities [Line Items]
Accounts payable and accrued liabilities	1,017	905
Other Accrued Liabilities [Member]
Accounts Payable And Accrued Liabilities [Line Items]
Accounts payable and accrued liabilities	$ 1,176	$ 1,582