OPERATING SEGMENTS - Revenue and Long-lived Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Revenue and Long-Lived Assets Outside of the United States
Total long- lived assets	$ 449,256	$ 457,244
United States
Revenue and Long-Lived Assets Outside of the United States
Total long- lived assets	390,769	396,066
Canada
Revenue and Long-Lived Assets Outside of the United States
Total long- lived assets	$ 58,487	$ 61,178

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599

Name:	us-gaap_NoncurrentAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant