Business Segment and Geographic Area Information - Geographic Area Information (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 26,255	$ 20,091	$ 48,799	$ 40,730
Long-Lived Assets	6,828	6,505	6,828	6,505
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	25,505	18,658	47,491	37,943
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	140	329	226	631
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	350	543	678	949
Middle East [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	0	0	0	3
Rest of the World [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 260	$ 561	$ 404	$ 1,204

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599

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+ References

No definition available.

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- Definition

Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(a))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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