Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flow from operating activities
Net Income	$ 15,679	$ 16,165	$ 11,938
Adjustments:
Depreciation and amortization expense	2,796	2,919	2,271
Equity-based compensation expense	2,647	2,236	1,654
Deferred income taxes	(350)	116	(883)
Deferred compensation	128	600	(1,036)
(Gain) loss on sales of property and equipment	0	20	(136)
Changes in assets and liabilities:
(Increase) decrease in accounts receivable	5,213	(2,239)	(10,561)
(Increase) decrease in prepaid and other current assets	(154)	403	93
(Increase) decrease in other assets	(1,610)	50	1,091
Increase (decrease) in accounts payable	(2,607)	(293)	1,250
Increase (decrease) in accrued compensation	(1,107)	1,002	1,530
Increase (decrease) in income taxes payable	(232)	(1,067)	1,176
Increase (decrease) in advance billings on contracts	(361)	707	(568)
Increase (decrease) in other current liabilities	(869)	732	733
Increase (decrease) in other long-term liabilities	(182)	(195)	53
Net cash provided by operating activities	18,991	21,156	8,605
Cash flow from investing activities:
Acquisition of business, net of cash received	(2,488)	0	0
Additions to property and equipment	(2,266)	(1,872)	(1,584)
Additions to capitalized software	(1,686)	0	(364)
Deferred compensation plan investments, net	(269)	(113)	97
Proceeds from sales of property and equipment	0	5	176
Net cash used in investing activities	(6,709)	(1,980)	(1,675)
Cash flow from financing activities:
Proceeds from stock option plan exercises	561	1,144	2,007
Excess tax benefits from equity-based compensation	1,119	2,615	1,801
Proceeds from Employee Stock Purchase Plan	368	294	274
Change in cash overdraft, net	506	(777)	539
Dividends paid	(2,274)	0	0
Purchase of stock for treasury	(7,343)	(4,591)	(3,601)
Net cash provided by (used in) financing activities	(7,063)	(1,315)	1,020
Effect of exchange rates on cash and cash equivalents	394	339	(373)
Net increase in cash and cash equivalents	5,613	18,200	7,577
Cash and cash equivalents at beginning of year	40,614	22,414	14,837
Cash and cash equivalents at end of year	$ 46,227	$ 40,614	$ 22,414