Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities:
Net earnings	$ 4,038	$ 5,380
Adjustments to reconcile net earnings to net cash provided by operating activities:
Benefit for bad debts	(44)	(4)
Depreciation	989	861
Amortization of finite lived intangibles	3,823	1,238
Deferred income taxes	174
Stock-based compensation expense	1,794	1,316
Changes in operating assets and liabilities
Accounts receivable, net	50,756	16,313
Inventories	(2,336)	3,974
Deferred costs/revenues/customer deposits, net	5,244	1,758
Accounts payable	(40,386)	(25,770)
Accrued expenses	(5,930)	(1,410)
Income tax receivable	2,112	(871)
Other	(38)	1,246
Net cash provided by operating activities	20,196	4,031
Cash flows from investing activities:
Maturities of investments		596
Sale of investments		2,294
Purchases of property and equipment	(1,679)	(2,479)
Net cash provided by (used in) investing activities	(1,679)	411
Cash flows from financing activities:
Net payments under line of credit	(6,000)
Excess tax from stock compensation	277	553
Proceeds from issuance of common stock from option exercise	237	321
Tax withholding payments reimbursed by restricted stock	(244)	(730)
Net cash provided by (used in) financing activities	(5,730)	144
Increase in cash and cash equivalents	12,787	4,586
Cash and cash equivalents, beginning of period	10,315	18,947
Cash and cash equivalents, end of period	23,102	23,533
Supplementary cash flow information:
Cash paid for income taxes	242	3,949
Cash paid for interest expense	$ 68