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Reserves for Credit Losses - Additional Information (Details) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2016 USD ($) customer	Dec. 31, 2015 USD ($) customer	Sep. 30, 2015
Concentration Risk [Line Items]
Trade receivable payments terms (30 days or less)	30 days
Threshold period past due for write-off of trade accounts receivable	150 days
Percentage of trade receivables outstanding balance, current	93.00%		90.00%
Percentage of trade accounts receivables less than 60 days past due	97.00%		98.00%
Customer Concentration Risk | Accounts Receivable
Concentration Risk [Line Items]
Concentration risk, number of customers | customer	0	1
Concentration risk, percentage	8.00%	11.00%
Revolving Credit Facility
Concentration Risk [Line Items]
Loans receivable, net | $	$ 2,600	$ 1,100

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes loans held for sale. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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Threshold period past due for trade accounts receivable to write off as uncollectible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Concentration Risk, Number of Customers

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Percentage of Trade Receivables Outstanding Balance, Current

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Percentage of Trade Receivables, Outstanding Balances Less Than 60 Days

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Trade receivable payments period.

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