Subsequent Event (Details) - Subsequent Event [Member]	Oct. 27, 2016 USD ($)
Subsequent Event [Line Items]
Debt extinguishment costs	$ 6,857,000
Committed Revolving Credit Facilities [Member]
Subsequent Event [Line Items]
Terminated facility	312,961,000
Uncommitted Credit Facilities [Member]
Subsequent Event [Line Items]
Terminated facility	292,159,000
Committed Seasonal Bulge Credit Facility [Member]
Subsequent Event [Line Items]
Terminated facility	$ 50,000,000
Credit Agreement [Member]
Subsequent Event [Line Items]
Maturity period	5 years
Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Terminated facility	$ 150,000,000
Delayed-Draw Facility [Member] | Credit Agreement [Member]
Subsequent Event [Line Items]
Amortization, first period	5.00%
Amortization, second period	10.00%
Minimum [Member] | Credit Agreement [Member]
Subsequent Event [Line Items]
Commitment fee, percent	0.25%
Minimum [Member] | Credit Agreement [Member] | Base Rate [Member]
Subsequent Event [Line Items]
Spread on variable rate	0.25%
Minimum [Member] | Credit Agreement [Member] | LIBOR [Member]
Subsequent Event [Line Items]
Spread on variable rate	1.25%
Maximum [Member] | Credit Agreement [Member]
Subsequent Event [Line Items]
Commitment fee, percent	0.50%
Maximum [Member] | Credit Agreement [Member] | Base Rate [Member]
Subsequent Event [Line Items]
Spread on variable rate	1.50%
Maximum [Member] | Credit Agreement [Member] | LIBOR [Member]
Subsequent Event [Line Items]
Spread on variable rate	2.50%
Maximum [Member] | Multicurrency Facilities [Member] | Credit Agreement [Member]
Subsequent Event [Line Items]
Increment amount	$ 50,000,000
Bridge Loan Facility [Member] | Commitment Letter [Member]
Subsequent Event [Line Items]
Terminated facility	$ 350,000,000