CONDENSED CONSOLIDATED 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 income	$ 15,927	$ 13,135
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,019	5,147
Loss on retirement of fixed assets	4
Amortization of deferred financing costs	151	152
Share based compensation	3,835	3,634
Excess tax benefit on stock options	(4,110)	(421)
Provision for doubtful accounts	35	8
Deferred income taxes	3,246	467
Unrealized currency loss (gain) on foreign denominated intercompany transactions	5	(177)
Unrealized loss on derivatives		208
Changes in operating assets and liabilities:
Accounts receivable	(944)	4
Income tax refunds receivable		(447)
Prepaid expenses and other assets	3	(511)
Accounts payable	139	(520)
Accrued income taxes	(55)	2,402
Accrued expenses and other liabilities	(1,353)	(2,057)
Deferred revenue	1,726	1,930
Net cash provided by operating activities	24,628	22,954
Cash flows from investing activities
Purchases of property and equipment	(632)	(850)
Purchase of exclusive license and other intangible assets		(150)
Acquisition of business, net of cash acquired	(72)	(49,082)
Net cash used in investing activities	(704)	(50,082)
Cash flows from financing activities
Payments on line of credit	(22,321)	(20,000)
Borrowings under line of credit		25,000
Excess tax benefit on stock options	4,110	421
Common stock dividend paid	(3,788)
Proceeds from exercises of common stock options	10,570	814
Net cash (used in) provided by financing activities	(11,429)	6,235
Effect of exchange rates on cash and cash equivalents	(166)	(39)
Increase (decrease) in cash and cash equivalents	12,329	(20,932)
Cash and cash equivalents at beginning of period	39,340	53,850
Cash and cash equivalents at end of period	$ 51,669	$ 32,918