Annual report pursuant to Section 13 and 15(d)

Debt (Details Textual)

v2.4.0.6
Debt (Details Textual) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 31, 2013
Contract
Mar. 31, 2012
Dec. 03, 2010
Debt (Additional Textual) [Abstract]      
Short-term borrowings outstanding $ 0 0  
Long-term debt payment requirements over the next five years 0    
Revolving credit facility [Member]
     
Debt (Textual) [Abstract]      
Line of credit     25,000
Maximum limit of credit facility     50,000
Term period of agreement 3 years    
Number of automatic one year extensions in term period 2    
Bank's prime rate 3.25% 3.25%  
Fix rate to reduce fee on outstanding 0.55%    
Availability under the line of credit 12,646    
Maximum funded debt to EBITDA ratio 3.5    
Minimum earnings to interest ratio 4.0    
Maximum funded debt to EBITDA ratio under condition one 2.0    
Dividend pay amount 25.00%    
Minimum funded debt to EBITDA ratio under condition two 2.0    
Assets book value $ 85,591    
Revolving credit facility [Member] | Maximum [Member]
     
Debt (Textual) [Abstract]      
LIBOR plus a margin range 2.00%    
Unused commitment fee for borrowing 0.375%    
Fee for outstanding letters of credit 1.25%    
Revolving credit facility [Member] | Minimum [Member]
     
Debt (Textual) [Abstract]      
LIBOR plus a margin range 1.00%    
Unused commitment fee for borrowing 0.20%    
Fee for outstanding letters of credit 0.75%