National corporate tax rate.

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Tax credit carryforward expiration period.

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Represents the year for tax credit carryforward expiration.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from investments (excludes investments in subsidiaries and equity method investments).

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No definition available.

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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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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Estimated amount of loss resulting from an adverse tax position.

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The amount of the additional liability or refund received or expected based on a final settlement with a taxing authority.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income (loss) exempt from income taxes.

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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 of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.

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Note 11 - Income Taxes (Details Textual) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		12 Months Ended
	Jan. 31, 2017	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Mar. 29, 2017
Effective Income Tax Rate Reconciliation, Percent		20.80%	23.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		35.00%
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount		$ 0.9	$ 1.1
Undistributed Earnings of Foreign Subsidiaries				$ 367.0
Investment Tax Credit Carryforward [Member]
Deferred Tax Assets, Investments				$ 1.3
Tax Credit Carryforward Expiration Period				20 years
General Business Tax Credit Carryforward [Member]
Tax Credit Carryforward Expiration Period				20 years
Minimum [Member] \| Investment Tax Credit Carryforward [Member]
Tax Credit Carryforward Expiration Year				2022
Minimum [Member] \| General Business Tax Credit Carryforward [Member]
Tax Credit Carryforward Expiration Year				2026
Maximum [Member] \| Investment Tax Credit Carryforward [Member]
Tax Credit Carryforward Expiration Year				2024
Maximum [Member] \| General Business Tax Credit Carryforward [Member]
Tax Credit Carryforward Expiration Year				2036
Deferred Tax Assets, Tax Credit Carryforwards, General Business				$ 82.5
Domestic Tax Authority [Member]
Operating Loss Carryforwards		$ 299.6
Domestic Tax Authority [Member] \| Minimum [Member]
Tax Credit Carryforward Expiration Year		2029
Domestic Tax Authority [Member] \| Maximum [Member]
Tax Credit Carryforward Expiration Year		2036
State and Local Jurisdiction [Member]
Operating Loss Carryforwards		$ 244.7
State and Local Jurisdiction [Member] \| Minimum [Member]
Tax Credit Carryforward Expiration Year		2018
State and Local Jurisdiction [Member] \| Maximum [Member]
Tax Credit Carryforward Expiration Year		2036
Foreign Tax Authority [Member] \| Kenya Revenue Authority [Member]
Income Tax Examination, Estimate of Possible Loss	$ 16.1
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority					$ 10.0
ISRAEL
National Corporate Tax Rate		16.00%
KENYA
National Corporate Tax Rate		37.50%