Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:
Net earnings	$ 6,211	$ 3,859
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	9,881	10,025
Amortization of deferred loan costs (Note F)	137	137
Stock-based compensation expense	3,777	4,479
Deferred income taxes	115	(253)
Foreign currency transaction (gains) losses on short-term intercompany balances	(54)	(190)
Changes in operating assets and liabilities:
Restricted cash	(62)	(59)
Billed receivables	1,705	(430)
Unbilled receivables	216	(3,290)
Prepaid expenses and other current assets	(139)	922
Other assets	24	(213)
Accounts payable and accrued expenses	(4,001)	(536)
Accrued payroll and related expenses	(5,305)	(1,611)
Refund liabilities	(566)	457
Deferred revenue	(341)	(662)
Noncurrent compensation obligations	285	276
Other long-term liabilities	(1,588)	(546)
Net cash provided by operating activities	10,295	12,365
Cash flows from investing activities:
Business acquisition	0	(1,437)
Purchases of property and equipment, net of disposal proceeds	(4,544)	(5,689)
Net cash used in investing activities	(4,544)	(7,126)
Cash flows from financing activities:
Repayments of long-term debt	(2,250)	(2,250)
Restricted stock repurchased from employees for withholding taxes	(1,241)	(1,357)
Proceeds from option exercises	611	496
Payments of deferred acquisition consideration	(1,904)	(2,891)
Net proceeds from issuance of common stock	4,118	0
Net cash used in financing activities	(666)	(6,002)
Effect of exchange rates on cash and cash equivalents	(484)	289
Net increase (decrease) in cash and cash equivalents	4,601	(474)
Cash and cash equivalents at beginning of period	37,806	20,337
Cash and cash equivalents at end of period	42,407	19,863
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	488	264
Cash paid during the period for income taxes, net of refunds received	$ 2,315	$ 1,661