Treasury Stock and Share Based Awards (Details Textual) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
Sep. 30, 2011 Year Country Theatre Agreement	Sep. 30, 2010
Share-Based Compensation Arrangement by Share-Based Payment Award (Textual) [Abstract]
Assumed forfeiture rate of restricted stock unit awards	5.00%
Shares of Restricted Stock Forfeited	0
Compensation expense	$ 2,300	$ 1,672
Actual cumulative forfeitures (in units)	9,918
Assumed maximum IRR for all grants	12.50%
Compensation expense recognition period (in years)	2 years
Number of hypothetical shares of common stock	153,727
Treasury Stock and Share Based Awards (Textual) [Abstract]
Number of Restricted Units Vested During Period	0
Common Stock Repurchased Value as Result of Restricted Stock Forfeitures	$ 0.001
Market Value Of Restricted Shares	$ 19.60
Intrinsic value of options exercised	699
Recognized tax benefit on options exercised	238
Average remaining contractual life of options outstanding	3
Shares of Restricted Stock Granted	424,436
Minimum fair value of restricted stock granted	$ 19.35
Maximum fair value of restricted stock granted	$ 20.71
Minimum forfeiture rate for restricted stock awards	0.00%
Maximum forfeiture rate for restricted stock awards	5.00%
Award vesting period range for restricted stock granted to directors	Over one year
Award vesting period range for restricted stock granted to employees	4 years
Compensation expense related to restricted stock awards	4,832	3,507
Unrecognized Compensation expense related to restricted stock awards	15,447
Compensation expense recognition period (in years)	3
Total fair value of vested shares	5,658
Tax benefit recognized on vested shares	2,188
Market value of common stock on the date of grant	$ 19.35
Fourth anniversary of grant date	Mar. 31, 2015
Percentage of IRR, which is the threshold	8.50%
Percentage of IRR, which is the target	10.50%
Percentage of IRR, which is the maximum	12.50%
IRR Target Label One [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award (Textual) [Abstract]
Percentage of restricted stock units vest	33.00%
IRR Target Label Two [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award (Textual) [Abstract]
Percentage of restricted stock units vest	66.00%
IRR Target Label Three [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award (Textual) [Abstract]
Percentage of restricted stock units vest	100.00%
Restricted Stock Units [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award (Textual) [Abstract]
Unrecognized Compensation expense related to outstanding stock options	6,014
Number of hypothetical shares of common stock	1,037,770
Employee Stock Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award (Textual) [Abstract]
Unrecognized Compensation expense related to outstanding stock options	$ 0

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Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value Maximum.

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Percentage of IRR, which is the target.

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Treasury Stock And Share Based Awards.

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Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period.

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The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

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The weighted average period between the balance sheet date and expiration for all awards outstanding under the plan, which may be expressed in a decimal value for number of years.

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