IPO TRANSACTION-RELATED COSTS (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
IPO TRANSACTION-RELATED COSTS
Compensation and payroll-related costs for termination of LTIC plan			$ 6,512
Incentive compensation and payroll-related costs to other management employees			2,853
Other IPO-related costs			1,601
Total IPO transaction-related expenses	$ 0	$ 0	$ 10,966

Represents the costs related to incentive compensation and payroll-related burden to other management employees included in initial public offering.

No definition available.

Name:	emes_IncentiveCompensationAndPayrollRelatedBurdenToOtherManagementEmployeesIncludedInInitialPublicOffering
Namespace Prefix:	emes_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration