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Significant Accounting Policies (Details) (USD $)	12 Months Ended
Significant Accounting Policies (Details) (USD $)	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Accounting Policies [Line Items]
Property, plant and equipment impairment	$ 0	$ 0	$ 0
Intangible asset impairment	0	0	0
Common stock, par value	$ 0.001	$ 0.001
Advertising expense	5,629,000us-gaap_AdvertisingExpense	4,778,000us-gaap_AdvertisingExpense	4,636,000us-gaap_AdvertisingExpense
Defined benefit plan, assets	35,671,000	34,229,000	29,884,000
Recurring
Accounting Policies [Line Items]
Defined benefit plan, assets	35,671,000
Recurring \| Fair Value, Inputs, Level 1 [Member] \| Mutual Funds [Member]
Accounting Policies [Line Items]
Defined benefit plan, assets	12,950,000
Recurring \| Fair Value, Inputs, Level 2 [Member] \| Common Collective Trust [Member]
Accounting Policies [Line Items]
Defined benefit plan, assets	22,721,000
Minimum [Member]
Accounting Policies [Line Items]
Catalogs and other direct marketing pieces, useful life	1 year
Maximum [Member]
Accounting Policies [Line Items]
Catalogs and other direct marketing pieces, useful life	2 years
Building and improvements \| Minimum [Member]
Accounting Policies [Line Items]
Property, plant and equipment, useful life	30 years
Building and improvements \| Maximum [Member]
Accounting Policies [Line Items]
Property, plant and equipment, useful life	40 years
Equipment [Member] \| Minimum [Member]
Accounting Policies [Line Items]
Property, plant and equipment, useful life	3 years
Equipment [Member] \| Maximum [Member]
Accounting Policies [Line Items]
Property, plant and equipment, useful life	5 years
Computer Hardware [Member] \| Minimum [Member]
Accounting Policies [Line Items]
Property, plant and equipment, useful life	3 years
Computer Hardware [Member] \| Maximum [Member]
Accounting Policies [Line Items]
Property, plant and equipment, useful life	5 years
Software [Member] \| Minimum [Member]
Accounting Policies [Line Items]
Property, plant and equipment, useful life	3 years
Software [Member] \| Maximum [Member]
Accounting Policies [Line Items]
Property, plant and equipment, useful life	5 years
Non-compete agreements [Member] \| Minimum [Member]
Accounting Policies [Line Items]
Finite-lived intangible asset, useful life	3 years
Non-compete agreements [Member] \| Maximum [Member]
Accounting Policies [Line Items]
Finite-lived intangible asset, useful life	5 years
Acquired backlog [Member]
Accounting Policies [Line Items]
Finite-lived intangible asset, useful life	1 year
Customer Relationships \| Minimum [Member]
Accounting Policies [Line Items]
Finite-lived intangible asset, useful life	4 years
Customer Relationships \| Maximum [Member]
Accounting Policies [Line Items]
Finite-lived intangible asset, useful life	20 years
Provision for Doubtful Accounts [Member]
Accounting Policies [Line Items]
Additions Charged to Expense	$ 1,638,000	$ 4,324,000	$ 3,556,000