JOINT VENTURE PARTNERSHIPS AND EQUITY METHOD INVESTMENTS (Details) CAD in Millions, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2014 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2016 CAD
Joint venture partnerships and equity method investments, condensed unconsolidated financial information
Current assets		$ 24.3	$ 22.6
Other assets		16.9	19.2
Total assets		41.2	41.8
Current liabilities		15.5	17.3
Other liabilities		0.3	1.3
Total liabilities		15.8	18.6
Partners' equity		25.4	23.2
Total liabilities and partners’ equity		41.2	41.8
Joint venture partnerships and equity method investments, condensed unconsolidated financial information, Income Statement
Net revenues	$ 283.8	156.7	213.7
Gross profit	81.3	45.7	54.3
Net earnings	$ 31.0	20.3	$ 20.1
The value of the Company's recorded investment in the Alberta partnership assigned to Canadian licenses		34.9
AHS transfer to Canadian JV | CAD				CAD 50.0
Alberta, Canada [Member]
Investments in unconsolidated joint venture partnerships and equity method investments Financial Statement, Reported Amounts
Net Investment		$ 44.9
Interest Owned		43.37%		43.37%
Charlotte, North Carolina [Member]
Investments in unconsolidated joint venture partnerships and equity method investments Financial Statement, Reported Amounts
Net Investment		$ 3.3
Florence, South Carolina [Member]
Investments in unconsolidated joint venture partnerships and equity method investments Financial Statement, Reported Amounts
Net Investment		$ 10.3
Interest Owned		49.00%		49.00%