Accrued Liabilities (Accrued Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Accrued Liabilities [Abstract]
Accrued merchant fees	$ 20,387	$ 12,310
Accrued compensation	9,991	7,038
Accrued purchases	9,200	2,046
Accrued interest expense	5,709	5,740
Accrued armored fees	5,497	4,322
Accrued merchant settlement amounts	4,739	4,583
Accrued cash rental and management fees	4,188	2,411
Accrued interest rate swap payments	2,034	2,199
Accrued maintenance fees	1,233	834
Accrued ATM telecommunications costs	1,161	1,402
Accrued processing costs	935	764
Other accrued expenses	12,874	6,894
Total	$ 77,948	$ 50,543