Commitments and Contingencies Commitment and Contingencies (Details) $ in Thousands	9 Months Ended
Sep. 30, 2017 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Litigation Settlement, Amount (Deprecated 2017-01-31)	$ 12,800
Litigation Settlement, Amount Awarded to Other Party	3,000
Gain (Loss) Related to Litigation Settlement	$ (2,752)

Amount awarded from other party in judgment or settlement of litigation.

No definition available.

Name:	us-gaap_LitigationSettlementAmountAwardedFromOtherParty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration