Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Details)

v2.4.0.6
Long-Term Debt (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2012
CreditFacilities
Aug. 01, 2011
Long-Term Debt (Textual) [Abstract]    
Credit facilities, maximum capacity   $ 50,000
Long-Term Debt (Additional Textual) [Abstract]    
Number of credit facilities 3  
Effective date Aug. 01, 2011  
Facility A [Member]
   
Long-Term Debt (Textual) [Abstract]    
Debt instrument, variable LIBOR rate basis 30 days  
Expiration date Aug. 01, 2016  
Debt covenant, Minimum Tangible Net Worth 92,000  
Debt covenant, annual increase of Minimum Tangible Net Worth as a percentage of Net Income 50.00%  
Debt covenant, Minimum EBITDA 5,000  
Facility A [Member] | LIBOR [Member]
   
Long-Term Debt (Textual) [Abstract]    
Variable interest rate 1.45%  
Facility B [Member]
   
Long-Term Debt (Textual) [Abstract]    
Debt instrument, variable LIBOR rate basis 30 days  
Expiration date Aug. 01, 2016  
Facility B [Member] | Maximum [Member]
   
Long-Term Debt (Textual) [Abstract]    
Funded debt to EBITDA 3.0  
EBIT to Interest Expense ratio 2.5  
Facility B [Member] | Maximum [Member] | LIBOR [Member]
   
Long-Term Debt (Textual) [Abstract]    
Variable interest rate 2.25%  
Facility B [Member] | Maximum [Member] | Bank's base rate [Member]
   
Long-Term Debt (Textual) [Abstract]    
Variable interest rate 0.00%  
Facility B [Member] | Minimum [Member]
   
Long-Term Debt (Textual) [Abstract]    
Funded debt to EBITDA 1.0  
EBIT to Interest Expense ratio 1.0  
Facility B [Member] | Minimum [Member] | LIBOR [Member]
   
Long-Term Debt (Textual) [Abstract]    
Variable interest rate 1.45%  
Facility B [Member] | Minimum [Member] | Bank's base rate [Member]
   
Long-Term Debt (Textual) [Abstract]    
Variable interest rate (0.25%)  
Facility C [Member]
   
Long-Term Debt (Textual) [Abstract]    
Payments on credit facility Facility C requires monthly payments of interest for the first 24 months and monthly payments of principal plus accrued interest  
Monthly payments of interest 24 months  
Monthly payments of principal plus accrued interest 60 months  
Amortization period (in years) 15 years  
Expiration period (in years) 7 years  
Facility C [Member] | Maximum [Member]
   
Long-Term Debt (Textual) [Abstract]    
Funded debt to EBITDA 3.0  
EBIT to Interest Expense ratio 2.5  
Facility C [Member] | Maximum [Member] | LIBOR [Member]
   
Long-Term Debt (Textual) [Abstract]    
Variable interest rate 2.45%  
Facility C [Member] | Maximum [Member] | Bank's base rate [Member]
   
Long-Term Debt (Textual) [Abstract]    
Variable interest rate 0.20%  
Facility C [Member] | Minimum [Member]
   
Long-Term Debt (Textual) [Abstract]    
Funded debt to EBITDA 1.0  
EBIT to Interest Expense ratio 1.0  
Facility C [Member] | Minimum [Member] | LIBOR [Member]
   
Long-Term Debt (Textual) [Abstract]    
Variable interest rate 1.65%  
Facility C [Member] | Minimum [Member] | Bank's base rate [Member]
   
Long-Term Debt (Textual) [Abstract]    
Variable interest rate (0.05%)  
Unsecured revolving line of credit facility [Member] | Facility A [Member]
   
Long-Term Debt (Textual) [Abstract]    
Credit facilities, maximum capacity 15,000  
Secured revolving line of credit facility [Member] | Facility B [Member]
   
Long-Term Debt (Textual) [Abstract]    
Credit facilities, maximum capacity 35,000  
Construction and term loan [Member] | Facility C [Member]
   
Long-Term Debt (Textual) [Abstract]    
Credit facilities, maximum capacity 15,000  
Debt instrument, variable LIBOR rate basis 30 days