Business and Summary of Significant Accounting Policies - Credit Quality Indicators (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, net	$ 84,804,000	$ 85,795,000
FICO Score, Less than 600
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, net	0.018	0.011
FICO Score, 600 to 699
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, net	0.781	0.798
FICO Score, Greater than 700
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, net	$ 0.201	$ 0.191

Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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