XML 131 R114.htm IDEA: XBRL DOCUMENT v3.6.0.2
Business Acquisition (Details Textual)
12 Months Ended
Dec. 31, 2016
USD ($)
acquisitions
Dec. 31, 2015
USD ($)
May 18, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Business Acquisition [Line Items]          
Number of business acquisitions completed during the period | acquisitions 0        
Goodwill $ 63,934,000 $ 63,934,000   $ 72,365,000 $ 58,554,000
Plant Nutrient          
Business Acquisition [Line Items]          
Goodwill 59,767,000 $ 59,767,000   $ 21,776,000 $ 16,222,000
Kay Flow Industries, Inc.          
Business Acquisition [Line Items]          
Percentage of shares outstanding acquired     100.00%    
Contingent consideration, minimum     $ 0    
Contingent consideration, maximum     24,000,000    
Fair value of consideration for acquisition $ 0   129,429,000    
Contingent consideration     400,000    
Goodwill     47,735,000    
Kay Flow Industries, Inc. | Plant Nutrient          
Business Acquisition [Line Items]          
Goodwill     $ 47,700,000