Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments (Details)

v2.4.0.8
Derivative Instruments (Details) (USD $)
3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Dec. 20, 2012
Sep. 30, 2013
Interest Rate Swap [Member]
Sep. 30, 2013
Interest Rate Swap [Member]
Dec. 20, 2012
Interest Rate Swap [Member]
Sep. 30, 2013
Interest Rate Swap [Member]
Other Assets [Member]
Dec. 31, 2012
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 751,000 0 (867,000) 0   751,000 (867,000)      
Interest rate swap                 (600,000) 800,000
Estimated unrealized loss to be realized in the next twelve months     $ 800,000