CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash Flows From Operating Activities
Net income	$ 4,033	$ 4,399
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	6,485	5,897
Provision for deferred income taxes	379	726
Excess tax benefit related to stock option exercises	(269)	(37)
Non-cash stock-based compensation	635	783
Change in operating assets and liabilities:
Accounts receivable	22,872	(27,282)
Inventories	67,326	1,607
Prepaid expenses and other current assets	(15,661)	(8,532)
Other assets	2,256	(1,816)
Accounts payable	(37,623)	410
Accrued expenses and other current liabilities	445	(717)
Deferred revenue	10,676	14,204
Total adjustments	57,521	(14,757)
Net cash provided by (used in) operating activities	61,554	(10,358)
Cash Flows From Investing Activities
Purchases of property and equipment	(18,432)	(7,447)
Net cash used in investing activities	(18,432)	(7,447)
Cash Flows From Financing Activities
Net (payments) borrowings under line of credit	(57,847)	12,766
Capital lease proceeds		206
Borrowing under note payable	9,060	4,108
Payments under notes payable	(714)	(458)
Change in book overdraft	1,421	8,722
Payments of obligations under capital lease	(1,421)	(1,431)
Net proceeds from stock issued under stock option plans	3,242	1,399
Payment for deferred financing costs	(30)	(752)
Common shares repurchased and held in treasury	(430)	(1,558)
Excess tax benefit related to stock option exercises	269	37
Net cash (used in) provided by financing activities	(46,450)	23,039
Effect of foreign currency on cash flow	5	(391)
Net change in cash and cash equivalents	(3,323)	4,843
Cash and cash equivalents at beginning of the period	9,992	6,535
Cash and cash equivalents at end of the period	6,669	11,378
Supplemental Cash Flow Information
Interest paid	1,819	1,393
Income taxes paid	5,688	1,820
Supplemental Non-Cash Investing and Financing Activities
Purchase of property and equipment	979	270
Deferred financing costs		$ 228