Advances Schedule of Changes in Allowance for Losses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Advances [Abstract]
Beginning balance	$ 16,485	$ 20,328	$ 16,465	$ 37,952
Provision	2,696	13,756	6,197	17,054
Net (charge-offs) recoveries and other	(3,428)	78	(6,909)	(20,844)
Ending balance	$ 15,753	$ 34,162	$ 15,753	$ 34,162

Amount of recovery of financing receivables doubtful of collection that were previously charged off.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(4)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration