Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 360
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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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No definition available.

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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
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The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
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Customer Concentration

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Number of financial institutions

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Number of individual foreign countries

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Significant Accounting Policies - Concentration of Credit Risk (Details)	12 Months Ended
	Dec. 31, 2015 USD ($) Customer Financial_Institution Country	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Concentration Risk [Line Items]
Asset impairment charges \| $	$ 266,000	$ 836,000	$ 1,430,000
Number of financial institutions \| Financial_Institution	1
Impairment of Long-Lived Assets \| $	$ 0	$ 600,000	$ 0
Sales Revenue, Net
Concentration Risk [Line Items]
Concentration risk (less than 1%)	10.00%
Customer Concentration \| Customer	0
Accounts Receivable
Concentration Risk [Line Items]
Concentration risk (less than 1%)	10.00%
Number of individual foreign countries \| Country	0
Customer Concentration \| Customer	0
Fixed Assets
Concentration Risk [Line Items]
Number of individual foreign countries \| Country	0