Employee Benefit Plans - Wyle Defined Benefit Plan (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	$ 92,976	$ 81,719
Wyle Defined Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation	128,772	118,191
Defined Benefit Plan, Benefit Obligation	128,771	118,191	108,335
Defined Benefit Plan, Interest Cost	5,442	5,767
Defined Benefit Plan, Actuarial Net (Gains) Losses	10,808	9,630
Defined Benefit Plan, Benefits Paid	(5,670)	(5,541)
Defined Benefit Plan, Actual Return on Plan Assets	11,477	(2,956)
Defined Benefit Plan, Contributions by Employer	5,450	9,854
Defined Benefit Plan, Fair Value of Plan Assets	92,976	81,719	80,362
Defined Benefit Plan, Funded Status of Plan	(35,795)	(36,472)
Defined Benefit Plan, Expected Return on Plan Assets	(6,200)	(6,524)
Defined Benefit Plan, Amortization of Net Gains (Losses)	1,745	1,041
Defined Benefit Plan, Net Periodic Benefit Cost	987	284
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	4.00%	4.75%
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Expected Long-Term Return on Assets	7.25%	7.50%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	4.75%	5.50%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets	7.50%	8.00%
Defined Benefit Plan, Expected Future Benefit Payments in Year One	6,448
Defined Benefit Plan, Expected Future Benefit Payments in Year Two	6,546
Defined Benefit Plan, Expected Future Benefit Payments in Year Three	6,629
Defined Benefit Plan, Expected Future Benefit Payments in Year Four	6,823
Defined Benefit Plan, Expected Future Benefit Payments in Year Five	6,892
Defined Benefit Plan, Expected Future Benefit Payments in Five Fiscal Years Thereafter	$ 35,935