Subsequent Events (Details) (USD $) In Thousands, unless otherwise specified		0 Months Ended
	Sep. 26, 2014	Sep. 29, 2014 Subsequent Event [Member] NOVA Safety & Environmental [Member]	Sep. 29, 2014 Subsequent Event [Member] NOVA Safety & Environmental [Member]
Subsequent Event [Line Items]
Business Acquisition, Cash Paid		$ 7,200
Business Acquisition, Cost Of Acquired Entity, Cash Paid in Year Two			2,598
Business Acquisition, Cost Of Acquired Entity, Cash Paid in Year Two, Due in Period One			508
Business Acquisition, Cost Of Acquired Entity, Cash Paid in Year Two, Due in Period Two			2,090
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares		50
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable		300
Additions for fiscal year 2015 acquisitions	$ 75		$ 1,500