Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Sep. 27, 2014	Mar. 31, 2014
Intangible Assets (Excluding Goodwill) [Line Items]
Definite-lived intangible assets, gross carrying amount	$ 170,244	$ 170,366
Definite-lived intangible assets, accumulated amortization	104,630	99,460
Definite-llved intangible assets, net carrying amount	65,614	70,906
Total intangible assets, gross carrying amount	206,236	206,358
Total intangible assets, accumulated amortization	112,883	107,713
Total intangible assets, net carrying amount	93,353	98,645
Non-compete agreements [Member]
Intangible Assets (Excluding Goodwill) [Line Items]
Definite-lived intangible assets, gross carrying amount	12,139	12,261
Definite-lived intangible assets, accumulated amortization	11,641	11,577
Definite-llved intangible assets, net carrying amount	498	684
Customer relationships [Member]
Intangible Assets (Excluding Goodwill) [Line Items]
Definite-lived intangible assets, gross carrying amount	137,267	137,267
Definite-lived intangible assets, accumulated amortization	73,314	68,644
Definite-llved intangible assets, net carrying amount	63,953	68,623
Total intangible assets, net carrying amount	63,953	68,623
Acquired backlog [Member]
Intangible Assets (Excluding Goodwill) [Line Items]
Definite-lived intangible assets, gross carrying amount	20,838	20,838
Definite-lived intangible assets, accumulated amortization	19,675	19,239
Definite-llved intangible assets, net carrying amount	1,163	1,599
Trademarks [Member]
Intangible Assets (Excluding Goodwill) [Line Items]
Indefinite-lived intangible assets, gross carrying amount	35,992	35,992
Indefinite-lived intangible assets, accumulated amortization	8,253	8,253
Indefinite-lived intangible assets, net carrying amount	27,739	27,739
Total intangible assets, net carrying amount	$ 27,739	$ 27,739