XML 25 R44.htm IDEA: XBRL DOCUMENT v3.3.0.814
Credit Facility (Details) - USD ($)
1 Months Ended
Dec. 31, 2011
Sep. 30, 2015
Sep. 30, 2014
Jun. 04, 2013
Line of Credit Facility [Line Items]        
Outstanding balance on credit facility   $ 0 $ 0  
Revolving Credit Facility [Member]        
Line of Credit Facility [Line Items]        
Credit agreement term 4 years      
Current borrowing capacity $ 100,000,000     $ 100,000,000
Maximum borrowing capacity       $ 125,000,000
Letter of Credit [Member]        
Line of Credit Facility [Line Items]        
Maximum borrowing capacity 20,000,000      
Swing Line of Credit [Member]        
Line of Credit Facility [Line Items]        
Maximum borrowing capacity $ 5,000,000