Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

No definition available.

Name:	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

ACCOUNTING POLICIES - Recently Issued or Adopted Accounting Standards (Details) - USD ($) $ in Thousands	Jan. 01, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle
Cumulative effect adjustment to retained earnings		$ 30,643
Accounting Standards Update 2016-06
New Accounting Pronouncements or Change in Accounting Principle
Cumulative effect adjustment to retained earnings	$ 600