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Acquisition - Additional Information (Detail) |  | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Feb. 01, 2017 USD ($) | Feb. 01, 2017 DKK | Jul. 29, 2017 USD ($) | Jan. 31, 2017 USD ($) | Feb. 01, 2017 DKK
Business Acquisition [Line Items] |  |  |  |  |
Goodwill |  |  | $ 12,542,000 | $ 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 |  | $ 1,300,000 |  |
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 |  |  | $ 700,000 |  |
Goodwill | $ 7,388,000 |  |  |  |
TrojanLabel ApS [Member] | General and Administrative Expense [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
General and administrative expense |  |  | $ 100,000 | $ 600,000 |
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
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% | 1.67% |  |
Minimum [Member] | Intangible Assets [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Percentage of revenue on existing technology |  |  | 0.00% |  |
Fair value assumptions, Earnings projections |  |  | $ 121,000 |  |
Maximum [Member] | Contingent Consideration Liability [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Probability of success | 87.20% | 87.20% | 57.90% |  |
Fair value assumptions, risk-adjusted discount rate | 3.35% | 3.35% | 3.22% |  |
Maximum [Member] | Intangible Assets [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Percentage of revenue on existing technology |  |  | 100.00% |  |
Fair value assumptions, Earnings projections |  |  | $ 1,070,000 |  |

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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e1043-128460 + Details
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