Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Document Period End Date	Mar. 31, 2015
Cash flows from operating activities:
Net income	$ 18,336	$ 15,417
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,597	2,552
Benefit for deferred taxes	(161)	(441)
Share based compensation	458	395
Provision for doubtful accounts	9	353
Debt discount amortization on convertible debt	7	10
Unrealized foreign exchange (gain)	(672)	216
(Gain) loss on put option	0	(454)
Reduction of acquisition earnout accruals	0	(1,762)
Changes in assets and liabilities, net of effects from acquisitions:
Accounts receivable	(4,689)	(4,716)
Other assets	(1,250)	576
Accounts payable and accrued expenses	(21,215)	(65)
Accrued payroll and related benefits	(564)	1,029
Deferred revenue	308	(2)
Deferred rent	(68)	(163)
Unrecognized tax benefits, period increase (decrease)	87	2,133
Loss Contingency Accrual, Period Increase (Decrease)	(690)	(4,218)
Other current liabilities	165	(56)
Net cash provided by operating activities	(7,342)	10,804
Cash flows from investing activities:
Purchases of marketable securities	0	(10)
Capital expenditures	(5,778)	(413)
Net cash used in investing activities	(6,778)	(420)
Cash flows from financing activities:
Proceeds from / (Repayments) of Lines of Credit	15,000	0
Principal payments of term loan obligation	0	(2,406)
Repurchases of common stock	(22,282)	(2,234)
Excess tax benefit from share-based compensation	31	(3,200)
Proceeds from the exercise of stock options	1,117	788
Forfeiture of certain shares to satisfy exercise costs and the recipients income tax obligations related to stock options exercised and restricted stock vested	(1,117)	(25)
Dividend payments	(2,729)	(2,896)
Principal payments of debt obligations	(12)	(9)
Payments of capital lease obligations	0	(56)
Net cash used in financing activities	(9,992)	(10,038)
Effect of foreign exchange rates on cash	(991)	708
Net change in cash and cash equivalents	(25,103)	1,054
Cash and cash equivalents at the beginning of the period	52,300	56,674
Cash and cash equivalents at the end of the period	27,197	57,728
Supplemental disclosures of cash flow information:
Interest paid	2,335	208
Income taxes paid	20,163	3,087
Via Media Health [Member]
Cash flows from investing activities:
Acquisition of business, net of cash acquired	(1,000)	0
Curepet, Inc. [Member]
Cash flows from investing activities:
Acquisition of business, net of cash acquired	$ 0	$ 3