Income Taxes: Undistributed foreign earnings (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Undistributed Earnings of Foreign Subsidiaries	$ 14.5	$ 13.9

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

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