Number of shares of equity interests issued or issuable to acquire entity.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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Amount of (increase) decrease to an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from the subsequent recognition of deferred tax assets.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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Acquisitions - Additional Disclosures (Details) (USD $)	12 Months Ended			0 Months Ended	3 Months Ended	0 Months Ended
Acquisitions - Additional Disclosures (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	May 10, 2013	Sep. 30, 2014	Jan. 02, 2014	Apr. 02, 2014
Business Acquisition [Line Items]
Increase in long-term debt	$ 0us-gaap_ProceedsFromIssuanceOfDebt	$ 26,190,000us-gaap_ProceedsFromIssuanceOfDebt	$ 25,000,000us-gaap_ProceedsFromIssuanceOfDebt
Final adjustment related to acquisition, increase in current deferred tax assets	1,162,000	0	0
Payments for acquisition, net of cash acquired	5,704,000	53,396,000	0
Florida Chemical Company, Inc [Member]
Business Acquisition [Line Items]
Percent of membership interests acquired				100.00%
Increase in long-term debt				25,000,000
Additional borrowing on credit facility				28,700,000
Common stock, shares issued				3,284,180.000000
Revenue of the acquired business from the date of acquisition		50,900,000
Income from operations of the acquired business from the date of acquisition		10,000,000
Total purchase price				106,438,000
Final adjustment related to acquisition, increase in current deferred tax assets					1,200,000
Consideration transferred, cash payments				49,500,000
EOGA [Member]
Business Acquisition [Line Items]
Percent of membership interests acquired						100.00%
Common stock, shares issued						94,354
Payments for acquisition, net of cash acquired						5,300,000
SiteLark [Member]
Business Acquisition [Line Items]
Percent of membership interests acquired							100.00%
Common stock, shares issued							5,327
Consideration transferred, cash payments							400,000
Selling, General and Administrative Expenses [Member] \| Florida Chemical Company, Inc [Member]
Business Acquisition [Line Items]
Acquisition costs incurred				$ 1,400,000