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Employee Benefit 401(k) Plans And Deferred Retirement Compensation Agreements (Details) (USD $)
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3 Months Ended | 6 Months Ended | |||||
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
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Jun. 30, 2013
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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 | $ 27,000 | $ 29,000 | $ 53,000 | $ 67,000 | |||
| Shares granted | 208,589 | [1] | |||||
| Shares issued for accrued dividends | 836 | ||||||
| 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 Lefkowitz And Messr Thomas [Member]
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| Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] | |||||||
| Expenses for employee benefit plan | 1,200,000 | ||||||
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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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Deferred Retirement Compensation Units [Member]
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| Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] | |||||||
| Expenses for employee benefit plan | $ 142,000 | $ 153,000 | $ 1,300,000 | $ 341,000 | |||
| Shares granted | 36,218 | ||||||
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