Quarterly report pursuant to Section 13 or 15(d)

Debt Instruments - Narrative (Details)

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Debt Instruments - Narrative (Details)
Sep. 30, 2015
USD ($)
Line of credit  
Debt Instruments  
Credit facility $ 60,000,000.0
Outstanding balance of borrowings 0
Available borrowing capacity 58,900,000
Letter of credit  
Debt Instruments  
Outstanding amount $ 1,100,000