XML 49 R38.htm IDEA: XBRL DOCUMENT v3.7.0.1
DEBT (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Sep. 30, 2016
Sep. 30, 2015
Debt Instrument [Line Items]            
Available to borrow under the credit facility $ 178,000   $ 178,000      
Cash on hand 48,521 $ 40,542 $ 48,521 $ 40,542 $ 53,825 $ 39,411
Percentage of foreign subsidiaries' share equity     65.00%      
Letters of Credit Outstanding, Amount 7,200   $ 7,200      
Line of Credit Facility, Amount Outstanding 265,000   265,000      
Long-term Debt, Current Maturities 20,000   20,000   $ 20,000  
Revolving Credit Facility [Member]            
Debt Instrument [Line Items]            
Line of Credit Facility, Amount Outstanding $ 450,000   $ 450,000      
Weighted average interest rates 2.11% 1.50% 1.90% 1.58%    
Line of Credit Facility, Commitment Fee Amount     $ 250,000      
Minimum [Member]            
Debt Instrument [Line Items]            
Credit facility fees     12.50%      
Maximum [Member]            
Debt Instrument [Line Items]            
Incremental term loan $ 250,000   $ 250,000      
Credit facility fees     27.50%