Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities:
Net earnings	$ 3,859	$ 1,504
Adjustments to reconcile net earnings from operations to net cash provided by operating activities:
Depreciation and amortization	10,025	7,386
Amortization of deferred loan costs (Note F)	137	136
Stock-based compensation expense	4,479	3,663
Loss on sale of property and equipment	1	3
Deferred income taxes	(253)	(73)
Foreign currency transaction (gains) losses on short-term intercompany balances	(190)	176
Changes in assets and liabilities:
Restricted cash	(59)	(50)
Billed receivables	(430)	1,547
Unbilled receivables	(3,290)	(3,719)
Prepaid expenses and other current assets	922	(859)
Other assets	(213)	(176)
Accounts payable and accrued expenses	(536)	(2,927)
Accrued payroll and related expenses	(1,611)	6,443
Refund liabilities	457	(535)
Deferred revenue	(662)	154
Noncurrent compensation obligations	276	251
Other long-term liabilities	(547)	(181)
Net cash provided by operating activities	12,365	12,743
Cash flows from investing activities:
Business acquisition	(1,437)	(663)
Purchases of property and equipment, net of disposal proceeds	(5,689)	(6,090)
Net cash used in investing activities	(7,126)	(6,753)
Cash flows from financing activities:
Repayments of long-term debt	(2,250)	(2,250)
Restricted stock repurchased from employees for withholding taxes	(1,357)	(1,058)
Proceeds from option exercises	496	347
Payments of deferred acquisition consideration	(2,891)	(1,482)
Net cash used in financing activities	(6,002)	(4,443)
Effect of exchange rates on cash and cash equivalents	289	(499)
Net increase (decrease) in cash and cash equivalents	(474)	1,048
Cash and cash equivalents at beginning of period	20,337	18,448
Cash and cash equivalents at end of period	19,863	19,496
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	264	324
Cash paid during the period for income taxes, net of refunds received	$ 1,661	$ 3,738