Summary of Significant Accounting Policies (Details)		3 Months Ended		9 Months Ended
	Jun. 01, 2017	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) Unit	Sep. 30, 2017 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
ARS to USD Exchange Rate		$ 41		$ 41
Number of reportable segments | Unit				3
Unfavorable currency impacts		100,000		$ 100,000
Amount Recognized in Income Due to Inflationary Accounting		1,000,000		3,300,000
Stock-based compensation expense		801,000	$ 2,375,000	3,624,000	$ 5,296,000
Net Cash Provided by (Used in) Financing Activities				(3,279,000)	22,835,000
Net Cash Provided by (Used in) Operating Activities				(10,105,000)	16,739,000
Increase (Decrease) in Margin Deposits Outstanding		100,000		400,000
2006 Stock Incentive Plan | Minimum | Performance-based awards
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Amount to be settled of target award level (as a percent)	0.00%
2006 Stock Incentive Plan | Maximum | Performance-based awards
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Amount to be settled of target award level (as a percent)	200.00%
Accounting Standards Update 2016-15
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Cash Provided by (Used in) Financing Activities					4,400,000
Net Cash Provided by (Used in) Operating Activities					$ 4,400,000
Argentina, Pesos
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Monetary Assets		$ 44,000,000		$ 44,000,000