Acquisitions	3 Months Ended
Jun. 30, 2012
Business Combinations [Abstract]
Acquisitions	Acquisitions Fiscal 2013 There have been no acquisitions during the three (3) month period ended June 30, 2012. Fiscal 2012 During the fourth quarter of Fiscal 2012, the Company acquired InnerWireless, Inc. ("InnerWireless"), a privately-held company headquartered in Richardson, TX. InnerWireless is the first Black Box acquisition in the rapidly-growing in-building wireless market and services clients in every industry from healthcare to Fortune 500 enterprises. During the second quarter of Fiscal 2012, the Company acquired PS Technologies, LLC ("PS Tech"), a privately-held company headquartered in Dayton, OH. PS Tech is the first Black Box acquisition in the rapidly-growing enterprise video communications market and services clients in the healthcare and government verticals. The acquisition of InnerWireless and PS Tech, both individually and in the aggregate, did not have a material impact on the Company's consolidated financial statements. The fair values of assets acquired and liabilities assumed for InnerWireless and PS Tech are provisional and are based on the information that was available as of the acquisition date to estimate the fair value of assets acquired and liabilities assumed. The Company believes that the information available provides a reasonable basis for estimating the fair values of assets acquired and liabilities assumed but additional information not yet available is necessary to finalize those fair values. Thus, the provisional measurements of fair value are subject to change. The Company expects to finalize the valuation and complete the purchase price allocation as soon as practicable but no later than one-year from the acquisition date.

Acquisitions

3 Months Ended

Jun. 30, 2012

Fiscal 2013

There have been no acquisitions during the three (3) month period ended June 30, 2012.

Fiscal 2012

During the fourth quarter of Fiscal 2012, the Company acquired InnerWireless, Inc. ("InnerWireless"), a privately-held company headquartered in Richardson, TX. InnerWireless is the first Black Box acquisition in the rapidly-growing in-building wireless market and services clients in every industry from healthcare to Fortune 500 enterprises.

During the second quarter of Fiscal 2012, the Company acquired PS Technologies, LLC ("PS Tech"), a privately-held company headquartered in Dayton, OH. PS Tech is the first Black Box acquisition in the rapidly-growing enterprise video communications market and services clients in the healthcare and government verticals.

The acquisition of InnerWireless and PS Tech, both individually and in the aggregate, did not have a material impact on the Company's consolidated financial statements.

The fair values of assets acquired and liabilities assumed for InnerWireless and PS Tech are provisional and are based on the information that was available as of the acquisition date to estimate the fair value of assets acquired and liabilities assumed. The Company believes that the information available provides a reasonable basis for estimating the fair values of assets acquired and liabilities assumed but additional information not yet available is necessary to finalize those fair values. Thus, the provisional measurements of fair value are subject to change. The Company expects to finalize the valuation and complete the purchase price allocation as soon as practicable but no later than one-year from the acquisition date.