Acquisitions - Additional Information (Detail)				9 Months Ended	12 Months Ended
	Sep. 28, 2017 USD ($) Aircraft	Feb. 01, 2017 USD ($)	Feb. 01, 2017 DKK	Oct. 28, 2017 USD ($)	Jan. 31, 2017 USD ($)	Feb. 01, 2017 DKK
Business Acquisition [Line Items]
Initial upfront payment in cash				$ 14,873,000
Current Portion of Royalty Obligation				500,000
Royalty obligation reported as long-term liability				8,200,000
Goodwill				$ 12,441,000	$ 4,521,000
Contingent Consideration Liability [Member]
Business Acquisition [Line Items]
Fair value key assumptions				Key assumptions in estimating the fair value of the contingent consideration liability include (1) the estimated earnout targets over the next seven years of $407,000–$1,280,000, (2) the probability of success (achievement of the various contingent events) from 1.6%–87.2% and (3) a risk-adjusted discount rate of approximately 1.77%–3.35% used to adjust the probability-weighted earnout payments to their present value.
Estimated target period				7 years
Estimated earnout targets		$ 1,280,000		$ 1,400,000
Estimated earnout targets		407,000		$ 400,000
Intangible Assets [Member]
Business Acquisition [Line Items]
Internal rate of return				19.00%
Fair value key assumptions				Key assumptions in estimating the fair value of the intangibles include (1) remaining life of existing technology acquired based on estimate of percentage of revenue from 0% – 100% for each product, (2) the Company’s internal rate of return of 19.0% and (3) a range of earnings projections from $121,000 – $1,070,000.
Intangible Assets [Member] | Contingent Consideration Liability [Member]
Business Acquisition [Line Items]
Estimated target period				7 years
TrojanLabel ApS [Member]
Business Acquisition [Line Items]
Purchase price of acquisition		9,100,000	DKK 62,900,000
Purchase price of acquisition amount held in escrow		900,000				DKK 6,400,000
Cash acquired from acquisition		$ 100,000	DKK 976,000
Additional contingent consideration period		7 years	7 years
General and administrative expense				$ 0.7
Goodwill		$ 7,388,000
TrojanLabel ApS [Member] | General and Administrative Expense [Member]
Business Acquisition [Line Items]
General and administrative expense				0.1	$ 0.6
TrojanLabel ApS [Member] | Earn-Out Payments, if 80% of Specified Earnings Targets are Achieved [Member]
Business Acquisition [Line Items]
Minimum percentage required to entitle additional contingent consideration		80.00%	80.00%
Business acquisition contingent consideration potential earn-out payments		$ 5,000,000				32,500,000
TrojanLabel ApS [Member] | Earn-Out Payments, if 100% of Specified Earnings Targets are Achieved [Member]
Business Acquisition [Line Items]
Minimum percentage required to entitle additional contingent consideration		100.00%	100.00%
Business acquisition contingent consideration potential earn-out payments		$ 5,800,000				40,600,000
TrojanLabel ApS [Member] | Earn-Out Payments, if 120% of Specified Earnings Targets are Achieved [Member]
Business Acquisition [Line Items]
Minimum percentage required to entitle additional contingent consideration		120.00%	120.00%
Business acquisition contingent consideration potential earn-out payments		$ 7,000,000				DKK 48,700,000
Honeywell Asset Purchase and License Agreement [Member]
Business Acquisition [Line Items]
Number of aircraft families | Aircraft	2
Initial upfront payment in cash	$ 14,600,000
Minimum royalty payments	$ 15,000,000			$ 15,000,000
Minimum royalty payment term	10 years
Present value factor				2.80%
Current Portion of Royalty Obligation				$ 500,000
Royalty obligation reported as long-term liability				$ 8,200,000
Transaction costs incurred as part of purchase price	$ 273,000
Additional payment made subject to completion of the terms of the TSA	$ 400,000
Internal rate of return	21.00%
Amortization period of intangibles	10 years
Honeywell Asset Purchase and License Agreement [Member] | Amended Credit Agreement with Bank Of America [Member] | Revolving Credit Facility [Member]
Business Acquisition [Line Items]
Initial upfront payment in cash	$ 14,600,000
Minimum [Member] | Contingent Consideration Liability [Member]
Business Acquisition [Line Items]
Probability of success		1.60%	1.60%	0.00%
Fair value assumptions, risk-adjusted discount rate		1.77%	1.77%	1.58%
Minimum [Member] | Intangible Assets [Member]
Business Acquisition [Line Items]
Fair value assumptions, Annual earnings projections				$ 121,000
Percentage of revenue on existing technology				0.00%
Minimum [Member] | Honeywell Asset Purchase and License Agreement [Member] | Intangible Assets [Member]
Business Acquisition [Line Items]
Fair value assumptions, Annual earnings projections	3,900,000
Maximum [Member] | Contingent Consideration Liability [Member]
Business Acquisition [Line Items]
Probability of success		87.20%	87.20%	46.80%
Fair value assumptions, risk-adjusted discount rate		3.35%	3.35%	2.76%
Maximum [Member] | Intangible Assets [Member]
Business Acquisition [Line Items]
Fair value assumptions, Annual earnings projections				$ 1,070,000
Percentage of revenue on existing technology				100.00%
Maximum [Member] | Honeywell Asset Purchase and License Agreement [Member] | Intangible Assets [Member]
Business Acquisition [Line Items]
Fair value assumptions, Annual earnings projections	$ 5,400,000