Quarterly report pursuant to Section 13 or 15(d)

Debt (Details)

v2.4.0.8
Debt (Details) (USD $)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2011
Dec. 31, 2013
Debt Instrument [Line Items]            
Debt Instrument, Maturity Date     Jun. 30, 2016      
Financing costs         $ 1,700,000  
Amortization period of debt issuance costs         5Y  
Borrowings outstanding 46,900,000   46,900,000     59,400,000
Term loan payments 2014 12,500,000   12,500,000      
Term loan payments 2015 34,400,000   34,400,000      
Revolving loans maximum borrowing capacity 125,000,000   125,000,000      
Revolving loans potential increment in maximum borrowing capacity     175,000,000      
Revolving loans amount outstanding 20,500,000   20,500,000     30,300,000
Letters of credit outstanding           573,000
Debt outstanding 67,400,000   67,400,000     89,700,000
Interest rate range, minimum (in hundredths)     1.90%      
Interest rate range, maximum (in hundredths)     3.25%      
Effective interest rate (in hundredths) 2.07%   2.07%      
Interest expense, net $ 586,000 $ 987,000 $ 1,300,000 $ 2,000,000    
LIBOR [Member]
            
Debt Instrument [Line Items]            
Base margin (in hundredths)     1.75%      
Base Rate [Member]
            
Debt Instrument [Line Items]            
Base margin (in hundredths)     0.00%