CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows-operating activities:
Net income	$ 721	$ 2,531
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	8,027	5,292
Deferred income taxes	1,426	1,700
Stock-based compensation expense	2,472	2,800
Accretion expense	1,033
Restructuring charges		810
Cash paid for restructuring charges	(616)	(6,663)
Changes in assets and liabilities, net of effects of acquisitions:
Trade and other receivables	(24,041)	(16,050)
Accounts payable	(541)	(1,104)
Accrued expenses	(40,684)	(71,194)
Income taxes recoverable (payable), net	1,488	8,231
Retirement and pension assets and liabilities	540	797
Prepayments	(306)	(3,397)
Other assets and liabilities, net	1,981	(670)
Net cash used in operating activities	(48,500)	(76,917)
Cash flows-investing activities:
Restricted cash	(26)	231
Capital expenditures	(1,358)	(5,114)
Purchases of available for sale investments	(571)	(926)
Proceeds from sales of available for sale investments	64	77
Net cash used in investing activities	(1,891)	(5,732)
Cash flows-financing activities:
Proceeds from debt issuance	40,000
Debt repayment	(1,500)
Cash dividends paid	(2,519)	(4,946)
Payment of employee tax withholdings on equity transactions	(576)	(1,569)
Acquisition earnout payments	(357)	(381)
Net cash provided by (used in) financing activities	35,048	(6,896)
Effect of exchange rates fluctuations on cash and cash equivalents	(2,567)	1,006
Net decrease in cash and cash equivalents	(17,910)	(88,539)
Cash and cash equivalents at beginning of period	117,605	185,390
Cash and cash equivalents at end of period	$ 99,695	$ 96,851