v2.4.1.9

Component of Net Sales by Region (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Segment Reporting Information [Line Items]
Net sales	$ 28,492us-gaap_SalesRevenueNet	$ 24,855us-gaap_SalesRevenueNet
UNITED STATES
Segment Reporting Information [Line Items]
Net sales	23,265us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_US	19,005us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_US
CANADA
Segment Reporting Information [Line Items]
Net sales	$ 5,227us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_CA	$ 5,850us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_CA

X

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales 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)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_StatementGeographicalAxis=country_CA
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementGeographicalAxis=country_US
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: