Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash Flows From Operating Activities
Net income (loss)	$ 12,883	$ (4,091)
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	11,922	9,085
Write-off of software work in process		3,327
Provision for deferred income taxes	1,034	(365)
Excess tax benefit related to stock option exercises	(392)	(207)
Non-cash stock-based compensation	1,457	1,220
Change in operating assets and liabilities:
Accounts receivable	(36,824)	(99,627)
Inventories	(23,699)	8,154
Prepaid expenses and other current assets	(5,807)	(7,401)
Other assets	1,225	1,211
Accounts payable	90,517	67,602
Accrued expenses and other current liabilities	16,215	9,668
Deferred revenue	4,588	5,119
Total adjustments	60,236	(2,214)
Net cash provided by (used in) operating activities	73,119	(6,305)
Cash Flows From Investing Activities
Acquisition of assets of En Pointe		(17,295)
Acquisition of assets of Systemax	(400)
Acquisition of Acrodex	(93)
Purchases of property and equipment	(5,057)	(19,666)
Net cash used in investing activities	(5,550)	(36,961)
Cash Flows From Financing Activities
Net borrowings (payments) under line of credit	(40,750)	30,055
Borrowings under notes payable	525	17,695
Payments under notes payable	(3,739)	(3,451)
Change in book overdraft	(11,180)	12,721
Payments of obligations under capital leases	(1,832)	(1,803)
Payments of earn-out liability	(9,820)	(5,443)
Net proceeds from stock issued under stock option plans	1,662	596
Payments for deferred financing costs	(655)	(653)
Common shares repurchased and held in treasury	(3,608)	(5,555)
Excess tax benefit related to stock option exercises	392	207
Net cash provided by (used in) financing activities	(69,005)	44,369
Effect of foreign currency on cash flow	200	(1,044)
Net change in cash and cash equivalents	(1,236)	59
Cash and cash equivalents at beginning of the period	11,176	8,892
Cash and cash equivalents at end of the period	9,940	8,951
Supplemental Cash Flow Information
Interest paid	3,925	2,557
Income taxes paid (refund), net	3,497	(2,922)
Supplemental Non-Cash Investing and Financing Activities
Earn-out liability		32,500
Financed purchase of property and equipment	$ 795	$ 1,035