Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2011

Stock-Based Compensation [Abstract]

Stock-Based Compensation, Expense

	2011		2010		2009
	(In thousands)
Cost of ATM operating revenues	$	903	$	753	$	798
Selling, general, and administrative expenses		8,421		5,284		3,822
Total stock-based compensation expense	$	9,324	$	6,037	$	4,620

Stock-Based Compensation, Stock Options

	Number of Shares			Weighted Average Exercise Price		Aggregate Intrinsic Value (in thousands)		Weighted Average Remaining Contractual Term
Options outstanding as of January 1, 2011		2,512,005		$	9.63
Exercised		(1,207,555	)	$	9.64
Forfeited		(22,500	)	$	3.10
Options outstanding as of December 31, 2011		1,281,950		$	9.73	$	22,617	4.26 years
Options vested and exercisable as of December 31, 2011		1,192,200		$	9.89	$	20,850	4.01 years

Stock- Based Compensation, Fair Value Assumptions

	2010	2009
Weighted average estimated fair value per stock option granted	$5.50	$3.02
Valuation assumptions:
Expected option term (in years)	6.25	6.25
Expected volatility	46.5% - 50.0%	49.5% - 53.3%
Expected dividend yield	0.00%	0.00%
Risk-free interest rate	2.7% - 3.0%	2.3% - 3.0%

Stock-Based Compensation, Non-Vested Stock Options

	Number of Shares Under Outstanding Options			Weighted Average Grant Date Fair Value
Non-vested options as of January 1, 2011		349,547		$	3.34
Forfeited		(22,500	)	$	1.32
Vested		(237,297	)	$	3.34
Non-vested options as of December 31, 2011		89,750		$	3.82

Stock-Based Compensation, Restricted Shares

	Number
	of Shares
RSAs outstanding as of January 1, 2011		1,558,315
Granted		143,200
Vested		(567,403	)
Forfeited		(27,500	)
RSAs outstanding as of December 31, 2011		1,106,612