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Employee Benefit 401(k) Plans And Deferred Retirement Compensation Agreements (Details) (USD $)
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12 Months Ended | |||||||||||||
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] | ||||||||||||||
| Minimum employee subscription rate, percentage of compensation | 1.00% | |||||||||||||
| Maximum employee subscription rate, percentage of compensation | 60.00% | |||||||||||||
| Employee pre-tax contributions vested percentage | 100.00% | |||||||||||||
| Vesting rate | 20.00% | |||||||||||||
| Percentage vested after total service period | 100.00% | |||||||||||||
| Employees' vesting rights | Participants are always 100 percent vested in their pre-tax contributions and will begin vesting in any matching or profit sharing contributions made on their behalf after two years of service with the Company at a rate of 20 percent per year, becoming 100 percent vested after a total of six years of service with the Company. | |||||||||||||
| Expenses for employee benefit plan | $ 117,000 | $ 7,000 | $ 0 | |||||||||||
| Shares granted | 168,841 | [1],[2] | 70,758 | [3] | 81,736 | [4] | ||||||||
| Shares vested | 149,463 | 123,877 | 134,048 | |||||||||||
| Period upon which stock units become payable following a triggering event | 30 days | |||||||||||||
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Minimum [Member]
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| Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] | ||||||||||||||
| Employer contribution vesting period | 2 years | |||||||||||||
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Maximum [Member]
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| Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] | ||||||||||||||
| Employer contribution vesting period | 6 years | |||||||||||||
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Messr Hersh [Member]
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| Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] | ||||||||||||||
| Amount of annual employer contribution to deferred retirement compensation | 500,000 | |||||||||||||
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Messr Lefkowitz [Member]
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| Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] | ||||||||||||||
| Amount of annual employer contribution to deferred retirement compensation | 160,000 | |||||||||||||
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Messr Thomas [Member]
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| Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] | ||||||||||||||
| Amount of annual employer contribution to deferred retirement compensation | 100,000 | |||||||||||||
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Deferred Retirement Compensation Units [Member]
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| Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] | ||||||||||||||
| Expenses for employee benefit plan | $ 595,000 | |||||||||||||
| Shares granted | 25,333 | |||||||||||||
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Additional Stock Units [Member]
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| Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] | ||||||||||||||
| Shares vested | 26,814 | |||||||||||||
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Additional Dividend Stock Units [Member]
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| Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] | ||||||||||||||
| Dividend equivalent payment, shares | 1,481 | |||||||||||||
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