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Restructuring - Additional Information (Detail) (USD $) | 0 Months Ended | 3 Months Ended |  | 3 Months Ended |  | 3 Months Ended | 9 Months Ended | 12 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended |
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Mar. 31, 2014 Employees | Feb. 28, 2014 Employees | Mar. 31, 2014 | Mar. 31, 2013 | Dec. 31, 2013 | Mar. 31, 2014 Employee Severance Costs [Member] | Dec. 31, 2013 Employee Severance Costs [Member] | Mar. 31, 2014 Facility Exit Related Costs [Member] | Mar. 31, 2014 Restructuring Charges [Member] | Dec. 31, 2013 Restructuring Charges [Member] | Mar. 31, 2014 Mobile Computing Products [Member] | Mar. 31, 2014 Mobile Computing Products [Member] | Mar. 31, 2014 M2M Products and Solutions [Member] | Mar. 31, 2014 M2M Products and Solutions [Member] | Mar. 31, 2014 Short-term [Member] | Mar. 31, 2014 Long-term [Member]
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reduction in number of employees after restructuring | 21 | 41 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring charges |  |  | $ 1,166,000 | $ 0 |  | $ 1,100,000 |  | $ 72,000 | $ 4,500,000 | $ 3,300,000 | $ 1,100,000 | $ 4,200,000 | $ 42,000.0 | $ 248,000.0 |  |
Restructuring liability | $ 1,041,000 |  | $ 1,041,000 |  | $ 881,000 | $ 331,000 | $ 0 |  |  |  |  |  |  |  | $ 775,000 | $ 266,000

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- Definition The number of positions eliminated during the period as a result of restructuring activities. + References No definition available. + Details
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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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