Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	May 30, 2015
Income Tax Contingency [Line Items]
Unrecognized tax benefits that would impact the effective tax rate if recognized	$ 2,852
Accrued for the payment of interest and penalties	338
Reductions for lapse of statue of limitations / settlements	(250)
Capital loss carryforwards	26,685
Federal [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards	70,220
Stanadyne [Member]
Income Tax Contingency [Line Items]
General business tax credit carryforward	$ 2,365

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible capital loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible general business tax credit carryforwards.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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