Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net income (loss)	$ (6,376)	$ 11,647
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	3,754	3,260
Loss on disposal of property and equipment	102	0
Loss (gain) on sale of marketable securities	285	(489)
Unrealized exchange loss (gain)	2,941	(11,296)
Remeasurement of related party acquisition-related contingent consideration	7,916	5,254
Remeasurement of related party financing-related contingent consideration	1,861	259
Change in deferred tax and income tax deferred charge	(1,682)	5,864
Stock-based compensation expense	2,475	1,593
Increase (decrease) in cash from:
Accounts receivable	2,120	1,376
Inventories	1,212	1,207
Prepaid expenses and other current assets	(206)	(368)
Research and development tax credit receivable	(363)	(127)
Accounts payable & other current liabilities	4,029	2,295
Deferred revenue	(758)	2,177
Accrued expenses	(809)	(858)
Accrued income taxes	5,520	3,283
Other long-term assets and liabilities	477	198
Net cash provided by operating activities	22,498	25,275
Cash flows from investing activities:
Purchases of property and equipment	(460)	(234)
Acquisitions of businesses	161	0
Proceeds from sales of marketable securities	9,766	2,817
Purchase of marketable securities	(50,454)	(26,012)
Net cash used in investing activities	(40,987)	(23,429)
Cash flows from financing activities:
Earn-out payments for related party acquisition-related contingent consideration	(8,014)	(325)
Royalty payments for related party financing-related contingent consideration	(1,092)	0
Cash proceeds from issuance of ordinary shares and warrants	0	246
Net cash used in financing activities	(9,106)	(79)
Effect of exchange rate changes on cash and cash equivalents	401	(2,992)
Net decrease in cash and cash equivalents	(27,194)	(1,225)
Cash and cash equivalents at January 1	65,064	39,760
Cash and cash equivalents at March 31	$ 37,870	$ 38,535