XML 25 R32.htm IDEA: XBRL DOCUMENT v3.3.0.814
Investment in joint venture (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Oct. 31, 2015
Oct. 31, 2014
Oct. 31, 2015
Oct. 31, 2014
Jan. 31, 2015
Schedule of Equity Method Investments [Line Items]          
date of investment in joint venture     Oct. 18, 2009    
initial investment in joint venture     $ 5,900    
Payments to acquire interest in joint venture     $ 2,000    
Ownership percentage of joint venture 49.00%   49.00%    
Payments for advance to affiliate     $ 3,900    
Income from joint venture $ 408 $ 903 524 $ 1,114  
Equity Method Investment, Summarized Financial Information, Current Assets 11,008   11,008   $ 13,820
Equity Method Investment, Summarized Financial Information, Noncurrent Assets 13,366   13,366   14,023
Equity Method Investment, Summarized Financial Information, Current Liabilities 5,127   5,127   4,499
Equity Method Investment, Summarized Financial Information, Noncurrent Liabilities 4,220   4,220   9,013
Equity Method Investment Summarized Financial Information, Equity 15,027   15,027   $ 14,331
Equity Method Investment, Summarized Financial Information, Revenue 8,780 11,886 18,922 28,666  
Equity Method Investment, Summarized Financial Information, Gross Profit 1,603 3,310 3,082 5,426  
Equity Method Investment, Summarized Financial Information, Income from continuing operations 1,257 2,749 1,823 3,820  
Equity Method Investment, Summarized Financial Information, Net income $ 833 $ 1,843 1,070 2,274  
Payment on loan from joint venture     $ 1,890 $ 0