Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Section S99
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Expenditures for salaries of officers. Does not include allocated share-based compensation, pension and post-retirement benefit expense or other labor-related non-salary expense. For commercial and industrial companies, excludes any direct and overhead labor that is included in cost of goods sold.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
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-Section S99
-Paragraph 2
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Stock-Based Compensation Stock-Based Compensation - Repurchase of Subsidiary Units (Details) - Founder and President - Repurchase of Subsidiary Units, February 2011 - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Officers' Compensation	$ 0.2	$ 0.2
Other Current Liabilities
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Due to related parties, current	2.7
Due to related parties, noncurrent			$ 2.5
Other Liabilities
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Due to related parties, current	$ 0.3
Due to related parties, noncurrent			$ 0.3