Subsequent Event (Details) (Subsequent Event [Member], AirSep [Member], USD $) In Thousands, unless otherwise specified	36 Months Ended
	Jul. 23, 2015	Jul. 23, 2012
Subsequent Event [Line Items]
Business Acquisition, Estimated Cost to Acquire Entity as of Date of Announcement to Enter Into Merger Agreement With Acquiree		$ 170,000
Business Acquisition, Purchase Price Allocation, Estimated Liabilities to be Assumed as of Date of Announcement to Enter Into Merger Agreement With Acquiree		10,000
Business Acquisition, ContingentConsideration,PotentialCashPaymentAtTimeofAnnouncment		10,000
Duration of Time Following Close When Portion of Purchase Price Will Be Held In Escrow	36 months
Amount of Purchase Price Estimated to be Held In Escrow Following the Close of the Acquisition	$ 6,000
Minimum [Member]
Subsequent Event [Line Items]
Minimum Required Voting Power Of Acquiree To Approve Merger As of Announce Date		90.00%