Credit Facilities and Long Term Debt (Details) - Jun. 30, 2015 - USD ($)	Total
Recovery Zone Facility Bond [Member]
Line of Credit Facility [Line Items]
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	1,100,000
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	$ 108,500,000
Availability under line of credit	102,400,000
Total outstanding letters of credit	6,100,000
Outstanding borrowings	$ 0