Credit Facilities and Long-Term Debt (Details) (USD $)	3 Months Ended	6 Months Ended
	Mar. 31, 2013	Jun. 30, 2013
Line of Credit Facility [Line Items]
Recovery zone facility bond, maturity date		Oct. 01, 2018
Capital equipment lease maturity date		Oct. 01, 2018
Additional amount to be paid over principal and interest to acquire ownership		$ 1.00
Long-term debt, outstanding amount		5,000,000
Systemax Inc. [Member]
Line of Credit Facility [Line Items]
Secured revolving credit agreement, current borrowing capacity		125,000,000
Secured revolving credit agreement, maximum borrowing capacity		200,000,000
Term of credit facility	5 years
Credit facility, maturing date		Oct. 27, 2015
Percentage of eligible accounts receivable for borrowings, maximum (in hundredths)		85.00%
Percentage of qualified inventories for borrowings, maximum (in hundredths)		40.00%
Eligible collateral letters of credit		110,400,000
Availability under line of credit		104,900,000
Total outstanding letters of credit		5,500,000
Outstanding borrowings		$ 0