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Acquisition of Professional Power Products Inc - Summary of Estimates of Fair Value of the Assets Acquired and the Liabilities Assumed as of the Acquisition Date (Detail) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2014 | Apr. 01, 2014 Reported Value Measurement [Member]
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Assets acquired: |  |
Cash |  | $ 1,277
Accounts receivable |  | 3,989
Inventories |  | 5,073
Prepaid expenses and other current assets |  | 243
Property, plant & equipment |  | 2,596
Total tangible assets |  | 13,178
Intangible assets: |  |
Intangible assets |  | 23,500
Goodwill | 22,372 | 22,372
Total assets acquired |  | 59,050
Liabilities assumed: |  |
Accounts payable |  | 1,494
Accrued liabilities |  | 3,257
Total liabilities assumed |  | 4,751
Net assets acquired |  | $ 54,299

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