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Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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- Definition

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.

+ References

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
-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

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

The cash inflow associated with the proceeds from sale and collection of receivables during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

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Major Customers - Narrative (Details) $ in Thousands	1 Months Ended	12 Months Ended
Major Customers - Narrative (Details) $ in Thousands	Jan. 31, 2017 USD ($)	Dec. 31, 2016 USD ($) customer	Dec. 31, 2015 USD ($) customer
Concentration Risk [Line Items]
Receivable due as of the bankruptcy filing date		$ 1,635	$ 2,698
Largest Customer \| Largest Customer Filed Voluntary Petition, Chapter 11 Bankruptcy \| Subsequent Event
Concentration Risk [Line Items]
Receivable due as of the bankruptcy filing date	$ 588
Receivable collected since bankruptcy filing date	$ 474
Customer Concentration Risk \| Sales Revenue, Services, Net
Concentration Risk [Line Items]
Number of customers \| customer		2	2
Customer Concentration Risk \| Sales Revenue, Services, Net \| Major Customer Number One
Concentration Risk [Line Items]
Concentration risk percentage		16.00%	12.00%
Customer Concentration Risk \| Sales Revenue, Services, Net \| Major Customer Number Two
Concentration Risk [Line Items]
Concentration risk percentage		12.00%	10.00%
Customer Concentration Risk \| Accounts Receivable \| Major Customer Number One
Concentration Risk [Line Items]
Concentration risk percentage		44.00%
Customer Concentration Risk \| Accounts Receivable \| Major Customer Number Two
Concentration Risk [Line Items]
Concentration risk percentage		12.00%