Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments (Details)

v2.4.0.6
Derivative Instruments (Details) (USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2013
Interest Rate Swap [Member]
Dec. 20, 2012
Interest Rate Swap [Member]
Mar. 31, 2013
Interest Rate Swap [Member]
Other Long-term Liabilities [Member]
Derivative [Line Items]          
Derivative, notional amount       $ 187,500,000  
Derivative, fixed interest rate       0.8525%  
Interest rate, all inclusive 2.3525%        
Change in fair value of derivative instrument, net of tax 55,000 0 100,000    
Derivative liability, fair value, gross liability         700,000
Estimated unrealized loss to be realized in the next twelve months $ 100,000