Increase (Decrease) in Cost of Revenue

No definition available.

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- Definition

Increase (Decrease) in Net Income (Loss) Attributable to Parent

+ References

No definition available.

+ Details

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- Definition

Increase (Decrease) in Revenue

+ References

No definition available.

+ Details

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- Definition

Standard Product Warranty, Number of Years

+ References

No definition available.

+ Details

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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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.

+ Details

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- Definition

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=84177426&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611

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Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended		12 Months Ended
	Apr. 01, 2016	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Concentration Risk [Line Items]
Securities excluded from net loss per share calculation (in shares)		64	146	99	183
Warranty service periods	10 years
Minimum
Concentration Risk [Line Items]
Warranty service periods				1 year
Maximum
Concentration Risk [Line Items]
Warranty service periods				5 years
Geographic concentration risk \| United States
Concentration Risk [Line Items]
Concentration risk (less than for one percent)				98.00%
Revenue \| Geographic concentration risk \| Countries outside of the United States
Concentration Risk [Line Items]
Concentration risk (less than for one percent)		1.00%	1.00%	1.00%	3.00%
Global Healthcare Systems, Northeast Ohio \| Revenue \| Customer concentration risk
Concentration Risk [Line Items]
Concentration risk (less than for one percent)		11.00%	11.00%	15.00%	11.00%
Global Healthcare Systems, Northeast Ohio \| Accounts receivable \| Customer concentration risk
Concentration Risk [Line Items]
Concentration risk (less than for one percent)						10.00%
Customer One \| Accounts receivable \| Customer concentration risk
Concentration Risk [Line Items]
Concentration risk (less than for one percent)				17.00%
Customer Two \| Accounts receivable \| Customer concentration risk
Concentration Risk [Line Items]
Concentration risk (less than for one percent)				12.00%
Atlantic Diving Supply, Inc. \| Revenue \| Customer concentration risk
Concentration Risk [Line Items]
Concentration risk (less than for one percent)		11.00%	36.00%	12.00%	27.00%
Atlantic Diving Supply, Inc. \| Accounts receivable \| Customer concentration risk
Concentration Risk [Line Items]
Concentration risk (less than for one percent)						63.00%
U.S. Navy \| Revenue \| Customer concentration risk
Concentration Risk [Line Items]
Concentration risk (less than for one percent)		12.00%		17.00%	38.00%
DFAS Columbus \| Revenue \| Customer concentration risk
Concentration Risk [Line Items]
Concentration risk (less than for one percent)					11.00%
Finished Products
Concentration Risk [Line Items]
Increase (decrease) in revenue			$ (814)
Increase (decrease) in cost of sales			(221)
Increase (decrease) in net income			$ (593)