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CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
CONDENSED CONSOLIDATED STATEMENTS OF INCOME
Direct operating expenses, depreciation and amortization	$ 7,334	$ 4,098	$ 14,794	$ 8,209
Direct operating expenses, stock-based compensation	761	(121)	1,443	812
Selling, general and administrative, depreciation and amortization	1,024	885	2,029	1,931
Selling, general and administrative, stock-based compensation	$ 539	$ 831	$ 1,195	$ 2,809

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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