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Employee Benefit Plans (Details Textual) (USD $)
In Thousands, unless otherwise specified
9 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2012
Defined Benefit Plan, Accumulated Benefit Obligation $ 40,041 $ 40,041
Defined Benefit Plan, Assets for Plan Benefits 24,769 24,769
Defined Benefit Plan, Contributions by Employer $ 1,005  
Defined Benefit Plan, Investment Goals   The Company's overall investment strategy is to achieve a mix of approximately 50 percent of investments for long-term growth and 50 percent for near-term benefit payments with a wide diversification of asset types and fund strategies.
Defined Benefit Plan, Target Allocation   100.00%
Equity Securities [Member]
   
Defined Benefit Plan, Target Allocation   60.00%
Corporate Bonds and U S Treasury Securities [Member]
   
Defined Benefit Plan, Target Allocation   50.00%