Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Dec. 27, 2014	Mar. 31, 2014
Intangible Assets (Excluding Goodwill) [Line Items]
Definite-lived intangible assets, gross carrying amount	$ 170,145	$ 170,366
Definite-lived intangible assets, accumulated amortization	107,178	99,460
Definite-llved intangible assets, net carrying amount	62,967	70,906
Total intangible assets, gross carrying amount	206,137	206,358
Total intangible assets, accumulated amortization	115,431	107,713
Total intangible assets, net carrying amount	90,706	98,645
Non-compete agreements [Member]
Intangible Assets (Excluding Goodwill) [Line Items]
Definite-lived intangible assets, gross carrying amount	12,040	12,261
Definite-lived intangible assets, accumulated amortization	11,633	11,577
Definite-llved intangible assets, net carrying amount	407	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	75,652	68,644
Definite-llved intangible assets, net carrying amount	61,615	68,623
Total intangible assets, net carrying amount	61,615	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	19,893	19,239
Definite-llved intangible assets, net carrying amount	945	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