Commitments and Contingencies Contractual Obligations (Details) $ in Thousands	Sep. 30, 2017 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Debt, Long-term and Short-term, Combined Amount	$ 75,000
Long-term Debt, Maturities, Repayments of Principal in Year Two	0
Long-term Debt, Maturities, Repayments of Principal in Year Three	0
Long-term Debt, Maturities, Repayments of Principal in Year Four	75,000
Long-term Debt, Maturities, Repayments of Principal in Year Five	0
Long-term Debt, Maturities, Repayments of Principal after Year Five	0
Operating Leases, Future Minimum Payments, Due Thereafter	9,551
Other Commitment	7,475
Other Commitments, Future Minimum Payments, Remainder of Fiscal Year	763
Other Commitment, Due in Second Year	3,198
Other Commitment, Due in Third Year	3,215
Other Commitment, Due in Fourth Year	299
Other Commitment, Due in Fifth Year	0
Other Commitment, Due after Fifth Year	0
Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year	0
Operating Leases, Future Minimum Payments Due	33,763
Operating Leases, Future Minimum Payments Due, Next Twelve Months	2,638
Operating Leases, Future Minimum Payments, Due in Two Years	9,208
Operating Leases, Future Minimum Payments, Due in Three Years	5,769
Operating Leases, Future Minimum Payments, Due in Four Years	3,378
Operating Leases, Future Minimum Payments, Due in Five Years	3,219
Purchase Obligation	97,970
Purchase Obligation, Due in Next Twelve Months	5,513
Purchase Obligation, Due in Second Year	4,477
Purchase Obligation, Due in Third Year	14,005
Purchase Obligation, Due in Fourth Year	34,757
Purchase Obligation, Due in Fifth Year	39,218
Purchase Obligation, Due after Fifth Year	0
Contractual Obligation	214,208
Contractual Obligation, Future Minimum Payments Due, Remainder of Fiscal Year	8,914
Contractual Obligation, Due in Second Year	16,883
Contractual Obligation, Due in Third Year	22,989
Contractual Obligation, Due in Fourth Year	113,434
Contractual Obligation, Due in Fifth Year	42,437
Contractual Obligation, Due after Fifth Year	$ 9,551