Intangible Assets (Details) - USD ($) $ in Thousands	Oct. 01, 2016	Mar. 31, 2016
Intangible Assets (Excluding Goodwill) [Line Items]
Definite-lived intangible assets, gross carrying amount	$ 128,037	$ 128,088
Definite-lived intangible assets, accumulated amortization	81,817	77,104
Definite-llved intangible assets, net carrying amount	46,220	50,984
Total intangible assets, gross carrying amount	163,487	163,538
Total intangible assets, accumulated amortization	90,070	85,357
Total intangible assets, net carrying amount	73,417	78,181
Non-compete agreements
Intangible Assets (Excluding Goodwill) [Line Items]
Definite-lived intangible assets, gross carrying amount	2,214	2,254
Definite-lived intangible assets, accumulated amortization	2,214	2,170
Definite-llved intangible assets, net carrying amount	0	84
Customer relationships
Intangible Assets (Excluding Goodwill) [Line Items]
Definite-lived intangible assets, gross carrying amount	122,334	122,345
Definite-lived intangible assets, accumulated amortization	76,114	71,445
Definite-llved intangible assets, net carrying amount	46,220	50,900
Total intangible assets, net carrying amount	46,220	50,900
Backlog
Intangible Assets (Excluding Goodwill) [Line Items]
Definite-lived intangible assets, gross carrying amount	3,489	3,489
Definite-lived intangible assets, accumulated amortization	3,489	3,489
Definite-llved intangible assets, net carrying amount	0	0
Trademarks
Intangible Assets (Excluding Goodwill) [Line Items]
Indefinite-lived intangible assets, gross carrying amount	35,450	35,450
Indefinite-lived intangible assets, accumulated amortization	8,253	8,253
Indefinite-lived intangible assets, net carrying amount	27,197	27,197
Total intangible assets, net carrying amount	$ 27,197	$ 27,197